第３条 ⼄は、本契約の履⾏に当たっては、⼄の品質保証プログラムを適⽤する。このプログラムは、国の登録を受けた機関により認証されたもの（ISO9001-2015 等）で、かつ、本特約条項に従って契約を履⾏することができるものとする。ただし、これによることができないときは、甲により承認を得た品質保証プログラムを適⽤するこ とができる。
本契約については、契約⼀般条項によるほか、次の特約条項（以下「本特約条項」という。）による。
（定義）
第１条 本契約において「協定」とは、「イーター事業の共同による実施のためのイーター国際核融合エネルギー機構の設⽴に関する協定」をいう。
２ 本契約において「イーター機構」とは、協定により設⽴された「イーター国際核融合エネルギー機構」をいう。
３ 本契約において「加盟者」とは、協定の締約者をいう。
４ 本契約において「国内機関」とは、各加盟者がイーター機構への貢献を⾏うに当たって、その実施機関として指定する法⼈をいう。
５ 本契約において「フランス規制当局」とは、イーター建設地であるフランスの法令に基づき契約物品に関して規制、許認可を⾏う権限を有する団体をいう。
（品質保証活動）
第２条 ⼄は、本契約書及びこの契約書に附属する仕様書（以下「契約書等」という。）の要求事項に合致させるため本契約内容の品質を管理するものとする。
（品質保証プログラム）
第３条 ⼄は、本契約の履⾏に当たっては、⼄の品質保証プログラムを適⽤する。このプログラムは、国の登録を受けた機関により認証されたもの（ISO9001-2015 等）で、かつ、本特約条項に従って契約を履⾏することができるものとする。ただし、これによることができないときは、甲により承認を得た品質保証プログラムを適⽤することができる。
（品質重要度分類）
第４条 ⼄は、適切な製品品質を維持するため、安全性、信頼性、性能等の重要度に応じて甲が定める本契約内容の等級に従って管理を実施しなければならない。契約物品の等級及び等級に応じた要求事項は、仕様書に定める。
（疑義の処置）
第５条 ⼄は、本契約書等に定める要求事項に疑義⼜は困難がある場合には、作業を開始する前に甲に書⾯にて通知し、その指⽰に従わなければならない。
（逸脱許可）
第６条 ⼄は、契約物品について、契約書等に定める要求事項からの逸脱許可が必要と思われる状況が⽣じた場合は、当該逸脱許可の申請を速やかに甲に提出するものとする。xは、⼄からの申請に基づき、当該逸脱許可の諾否について検討し、その結果を⼄に通知するものとする。
（不適合の処理）
第７条 ⼄は、契約物品が契約書等の要求事項に適合しないとき⼜は適合しないことが⾒込まれるときは、遅滞なくその内容を甲に書⾯にて通知し、その指⽰に従わなければならない。
（重⼤不適合の処置）
第８条 ⼄は、重⼤不適合が発⽣した場合、直ちにその内容を甲に報告するとともに、プロジェクトへの影響を最⼩限に抑え、要求された品質を維持するため、その処置⽅法を検討し、速やかに甲に提案し、その承認を得なければならない。
（作業場所の通知）
第９条 ⼄は、本契約締結後、本契約の履⾏に必要な全ての作業場所を特定し、本契約に係る作業の着⼿前に、甲に書⾯にて通知するものとする。当該通知には、本契約の履⾏のために、⼄が本契約の⼀部を履⾏させる下請負⼈の作業場所を含む。
（受注者監査）
第１０条 甲は、⼄に対して事前に通知することにより、⼄の品質保証に係る受注者監査を実施できるものとする。
（⽴⼊り権）
第１１条 ⼄は、本契約の履⾏状況を確認するため、甲、イーター機構、本契約の活動に関連する
⽇本以外の加盟者の国内機関、フランス規制当局及びそれらから委託された第三者が、第９条に基づき特定した作業場所に⽴ち⼊る権利を有することに同意する。
２ 前項に定める⽴⼊り権に基づく作業場所への⽴⼊りは、契約書等に定める中間検査等への⽴会い及び定期レビュー会合への参加の他、⼄に対して事前に通知することにより、必要に応じて実施することができるものとする。
（⽂書へのアクセス）
第１２条 ⼄は、甲の求めに応じ、本契約の適切な管理運営を証明するために必要な⽂書及びデータを提供するものとする。
（作業停⽌の権限）
第１３条 甲は、⼄が本契約の履⾏に当たって、契約書等の要求事項を満⾜できないことが認められる等、必要な場合は、⼄に作業の停⽌を命じることができる。
２ ⼄は、甲から作業停⽌命令が発せられた場合には、可及的速やかに当該作業を停⽌し、甲の指
⽰に従い要求事項を満⾜するよう必要な措置を講ずるものとする。
（下請負⼈に対する責任）
第１４条 ⼄は、下請負⼈に対し、本契約の⼀部を履⾏させる場合、本特約条項に基づく⼄の⼀切
（情報のイーター機構等への提供）
第１５条 ⼄は、本契約の履⾏過程で甲に伝達された情報が、必要に応じてイーター機構及びフランス規制当局に提供される場合があることにあらかじめ同意するものとする。
別添02 量研との取引において遵守すべき「情報セキュリティの確保」に関する事項
１ 受注者は、契約の履行に関し、情報システム（情報処理及び通信に関わるシステムであって、ハードウェア、ソフトウェア及びネットワーク並びに記録媒体で構成されるものをいう。）を利用する場合には、機構の情報及び情報システムを保護するために、情報システムからの情報漏洩、コンピュータウィルスの侵入等の防止その他必要な措置を講じなければならない。
２ 受注者は、次の各号に掲げる事項を遵守するほか、機構の情報セキュリティ確保のために、機構が必要な指示を行ったときは、その指示に従わなければならない。
(1) 受注者は、契約の業務に携わる者（以下「業務担当者」という。）を特定し、それ以外の者に作業をさせてはならない。
(2) 受注者は、契約に関して知り得た情報（機構に引き渡すべきコンピュータプログラム著作物及び計算結果を含む。以下同じ。）を取り扱う情報システムについて、業務担当者以外が当該情報にアクセス可能とならないよう適切にアクセス制限を行うこと。
(3) 受注者は、契約に関して知り得た情報を取り扱う情報システムについて、ウィルス対策ツール及びファイアウォール機能の導入、セキュリティパッチの適用等適切な情報セキュリティ対策を実施すること。
(4) 受注者は、P2P ファイル交換ソフトウェア（Winny、WinMX、KaZaa、Share 等）及びSoftEtherを導入した情報システムにおいて、契約に関して知り得た情報を取り扱ってはならない。
(5) 受注者は、機構の承諾のない限り、契約に関して知り得た情報を機構又は受注者の情報システム以外の情報システム（業務担当者が所有するパソコン等）において取り扱ってはならない。
(6) 受注者は、委任をし又は下請負をさせた場合は、当該委任又は下請負を受けた者の契約に関する行為について、機構に対し全ての責任を負うとともに、当該委任又は下請負を受けた者に対して、情報セキュリティの確保について必要な措置を講ずるように努めなければならない。
(7) 受注者は、機構が求めた場合には、情報セキュリティ対策の実施状況についての監査を受け入れ、これに協力すること。
(8) 受注者は、機構の提供した情報並びに受注者及び委任又は下請負を受けた者が契約業務のために収集した情報について、災害、紛失、破壊、改ざん、き損、漏えい、コンピュータウィルスによる被害、不正な利用、不正アクセスその他の事故が発生、又は生ずるおそれのあることを知った場合は、ただちに機構に報告し、機構の指示に従うものとする。契約の終了後においても、同様とす る。
なお、量研の入札に参加する場合又は量研からの見積依頼を受ける場合にも、上記事項を遵守していただきます。
以 上
（受注者が単独で⾏った発明等の産業財産権の帰属）
第１条 受注者は、本契約に関して、受注者が単独でなした発明⼜は考案（以下「発明等」という。）に対する特許権、実⽤新案権⼜は意匠権（以下「特許xx」という。）を取得する場合は、単独で出願できるものとする。ただし、出願するときはあらかじめ出願に際して提出すべき書類の写しを添えて量研に通知するものとする。
（受注者が単独で⾏った発明等の特許xxの譲渡等）
第２条 受注者は、受注者が前条の特許xxを量研以外の第三者に譲渡⼜は実施許諾する場合には、本特約条項の各条項の規定の適⽤に⽀障を与えないよう当該第三者と約定しなければならない。
（受注者が単独で⾏った発明等の特許xxの実施許諾）
第３条 量研は、第 1 条の発明等に対する特許xxを無償で⾃ら試験⼜は研究のために実施することができる。量研が量研のために受注者以外の第三者に製作させ、⼜は業務を代⾏する第三者に再実施権を許諾する場合は、受注者の承諾を得た上で許諾するものとし、その実施条件等は量研、受注者協議の上決定する。
（量研及び受注者が共同で⾏った発明等の特許xxの帰属及び管理）
第４条 量研及び受注者は、本契約に関して共同でなした発明等に対する特許xxを取得する場合は、共同出願契約を締結し、共同で出願するものとし、出願のための費⽤は、量研、受注者の持分に⽐例して負担するものとする。
（量研及び受注者が共同で⾏った発明等の特許xxの実施）
第５条 量研は、共同で⾏った発明等を試験⼜は研究以外の⽬的に実施しないものとする。ただし、量研は量研のために受注者以外の第三者に製作させ、⼜は業務を代⾏する第三者に実施許諾する場合は、無償にて当該第三者に実施許諾することができるものとする。
２ 受注者が前項の発明等について⾃ら商業的実施をするときは、量研が⾃ら商業的実施をしないことにかんがみ、受注者の商業的実施の計画を勘案し、事前に実施料等について量研、受注者協議の上、別途実施契約を締結するものとする。
（秘密の保持）
第６条 量研及び受注者は、第１条及び第４条の発明等の内容を出願により内容が公開される
⽇まで他に漏洩してはならない。ただし、あらかじめ書⾯により出願を⾏った者の了解を得た場合はこの限りではない。
（委任・下請負）
第７条 受注者は、本契約の全部⼜は⼀部を第三者に委任し、⼜は請け負わせた場合においては、その第三者に対して、本特約条項の各条項の規定を準⽤するものとし、受注者はこのために必要な措置を講じなければならない。
２ 受注者は、前項の当該第三者が本特約条項に定める事項に違反した場合には、量研に対し全ての責任を負うものとする。
（協議）
第８条 第１条及び第４条の場合において、単独若しくは共同の区別⼜は共同の範囲等について疑義が⽣じたときは、量研、受注者協議して定めるものとする。
（有効期間）
第９条 本取扱いの有効期限は、本契約締結の⽇から当該特許xxの消滅する⽇までとする。
2
別添図書４ イーター実施協定に係る情報及び知的財産に関する特約条項
本契約については、本契約⼀般条項によるほか、次の特約条項（以下「本特約条項」という。）による。
（定義）
第１条 本契約において「知的財産権」とは、次の各号に掲げるものをいう。
（１） 特許法（昭和３４年法律第１２１号）に規定する特許権⼜は特許を受ける権利
（２） 実⽤新案法（昭和３４年法律第１２３号）に規定する実⽤新案権⼜は実⽤新案登録を受ける権利
（３） 意匠法（昭和３４年法律第１２５号）に規定する意匠権⼜は意匠登録を受ける権利
（４） 商標法（昭和３４年法律第１２７号）に規定する商標権⼜は商標登録を受ける権利
（５） 半導体集積回路の回路配置に関する法律（昭和６０年法律第４３号）に規定する回路配置利⽤権⼜は回路配置利⽤権の設定の登録を受ける権利
（６） 種苗法（平成１０年法律第８３号）に規定する👉成者権⼜は品種登録を受ける地位
（７） 著作xx（昭和４５年法律第４８号）に規定するプログラムの著作物及びデータベースの著作物の著作権
（８） 外国における、第１号から第７号に記載の各知的財産権に相当する権利
（９） 不正競争防⽌法（平成５年法律第４７号）に規定する営業秘密に関して法令により定められた権利⼜は法律上保護される利益に係る権利（以下「営業秘密」という。）
２ 本契約において「情報」とは、法律による保護を受けることができるか否かを問わず、発明や発⾒の記述のみならず、公表されている資料、図書、意匠、計算書、報告書その他の⽂書、研究開発に関する記録された資料⼜は⽅法並びに発明及び発⾒に関する説明であって、前項に定義する知的財産権を除いたものをいう。
３ 本契約において「発明等」とは、特許権の対象となるものについては発明、実⽤新案権の対象となるものについては考案、意匠権、商標権、回路配置利⽤権及びプログラム等の著作権の対象となるものについては創作、👉成者権の対象となるものについては👉成並びに営業秘密を使⽤する権利の対象となるものについては案出をいう。
４ 本契約において「背景的な知的財産権」とは、本契約の締結前に取得され、開発され、若しくは創出された知的財産権⼜は本契約の範囲外において取得され、開発され、若しくは創出される知的財産権をいう。
５ 本契約において「背景的な営業秘密」とは、背景的な知的財産権のうちの営業秘密をいう。
６ 本契約において「⽣み出された知的財産権」とは、本契約の履⾏の過程で、⼄が単独で⼜は甲と共同で取得し、開発し、⼜は創出した知的財産権をいう。
７ 本契約において「協定」とは、「イーター事業の共同による実施のためのイーター国際核融合エネルギー機構の設⽴に関する協定」をいう。
８ 本契約において「附属書」とは、協定の「情報及び知的財産に関する附属書」をいう。
９ 本契約において「イーター機構」とは、協定により設⽴された「イーター国際核融合エネル
ギー機構」をいう。
１０ 本契約において「加盟者」とは、協定の締約者をいう。
１１ 本契約において「国内機関」とは、各加盟者がイーター機構への貢献を⾏うに当たって、その実施機関として指定する法⼈をいう。
１２ 本契約において「団体」とは、国内機関⼜はイーター機構が協定の⽬的のために物品⼜は役務の提供に関する契約を締結する団体をいう。
１３ 本契約において「理事会」とは、協定第６条に定める「理事会」をいう。
１４ 本契約において「特許等」とは、特許、登録実⽤新案、登録意匠、登録商標、登録回路配置及び登録品種の総称をいう。
（情報の普及）
第２条 ⼄は、加盟者⼜は国内機関が、本契約の実施により直接に⽣じる情報（著作権の有無を問わない。）を⾮商業上の利⽤のため翻訳し、複製し、及び公に頒布する権利を有することに同意する。
２ ⼄は、前項により作成される著作権のある著作物の写しであって公に頒布される全てのものには、著作者が明⽰的に記名を拒否しない限り、著作者の⽒名を明⽰することに同意する。
（発明等の報告）
第３条 ⼄は、本契約の履⾏の過程で発明等を創出した場合には（以下、かかる発明等を「本発明等」という。）、本発明の詳細とともに、速やかに甲に書⾯により報告するものとする。
２ ⼄は、甲が前項の本発明の詳細を含む報告をイーター機構及び加盟者に提供すること、並びに、甲が⾃ら実施する核融合の研究開発に関する活動のため必要とする場合において⼄以外の⽇本の団体に提供することに、あらかじめ同意する。
（⽣み出された知的財産権の帰属等）
第４条 本発明等に係る知的財産権は、⼄に帰属する。ただし、本発明等が甲⼄共同で創出したものである場合、当該本発明等に係る知的財産権は甲及び⼄の共有となる。
２ 前項ただし書きの甲及び⼄の共有に係る知的財産権について、甲及び⼄は、知的財産権の持分、費⽤分担、その他必要な事項を協議の上、別途取決めを締結するものとする。
３ ⼄は、甲及び⼄の共有に係る当該知的財産権を⾃ら⼜は⼄が指定する者が実施する場合、甲及び⼄の持分に応じてあらかじめ定める不実施補償料を甲に⽀払うものとする。
（発明等の取扱い）
第５条 ⼄は、本発明等に関し、(i)特許等の登録に必要な⼿続を⾏うか、(ii)営業秘密として管理するか、⼜は、(iii)(i)若しくは(ii)のいずれも⾏わないかという取扱いについて速やかに決定の上、甲に決定内容を書⾯により報告する。ただし、当該本発明等が甲⼄共同で創出したものである場合、甲及び⼄は、上記(i)ないし(iii)の取扱いについて別途協議の上決定する。
２ ⼄は、前項に基づく本発明等の取扱いに関する決定内容について、甲がイーター機構及び加
盟者に提供すること、並びに甲が⾃ら実施する核融合の研究開発に関する活動のため必要とする場合において⼄以外の⽇本の団体に提供することに、あらかじめ同意する。
３ ⼄は、⼄が第１項の(iii)の取扱いをすることを決定した本発明等について、甲⼜はイーター機構の求めがあった場合は、当該本発明等の知的財産権を甲⼜はイーター機構に承継させるものとする。
（背景的な知的財産権の認定）
第６条 ⼄が本契約の履⾏の過程で利⽤する背景的な知的財産権は、甲及び⼄が別途締結する覚書（以下「覚書」という。）に定める。覚書に定めのない知的財産権であって、本契約の履⾏の過程で利⽤されるものは、⽣み出された知的財産権とみなす。
２ ⼄は、覚書に掲げる知的財産権の内容に変更が⽣じたときは、速やかに当該変更内容を甲に書⾯により報告するものとする。
３ ⼄は、本契約締結後に本契約の履⾏の過程で利⽤すべき背景的な知的財産権の存在が判明したときは、速やかに、当該背景的な知的財産権が、本契約の範囲外において存在することを証明する具体的な証拠とともに、本契約締結前に報告できなかった正当な理由を甲に書⾯により報告するものとする。
４ 甲は、前項の報告を受けた場合は、⼄から提出された証拠及び理由の妥当性を検討の上、必要に応じて、甲⼄協議の上、覚書の改訂を⾏うものとする。
５ ⼄は、本条に基づく報告について、甲がイーター機構及び加盟者に提供すること、並びに甲が⾃ら実施する核融合の研究開発に関する活動のため必要とする場合において⼄以外の⽇本の団体に提供することに、あらかじめ同意する。
６ ⼄は、本契約の履⾏の過程で背景的な知的財産権を利⽤する場合は、必要な実施権⼜は利⽤権を確保し、甲並びに契約物品の提供を受けるイーター機構及び関連する他の加盟者が、⽀障なく当該物品を使⽤することができるようにしなければならない。甲並びにイーター機構及び関連する他の加盟者が当該背景的な知的財産権に関し、第三者から知的財産権侵害の苦情を受けた場合には、⼄は⾃⼰の責任と費⽤でその苦情を防御⼜は解決し、当該苦情に起因する損失、損害⼜は経費の全てを補償し、甲並びにイーター機構及び関連する他の加盟者に対して何らの損害も与えないものとする。
（背景的な知的財産権の帰属）
第７条 本契約は、背景的な知的財産権の帰属について何ら変更を⽣じさせるものではない。
（創出者への補償等）
第８条 ⼄は、⼄の従業者⼜は役員（以下「従業者等」という。）が創出した本発明等に係る知的財産権を、適⽤法令に従い、⼄の費⽤と責任において従業者等から承継するものとする。
（⽣み出された知的財産権の実施）
第９条 ⽣み出された知的財産権の実施権の許諾（利⽤権の付与を含む。以下同じ。）については、
次の各号による。
（１） ⼄は、甲が⾃ら実施する研究開発に関する活動のために、平等及び無差別の原則に基づき、当該⽣み出された知的財産権の取消し不能な、⾮排他的な、かつ、無償の実施権を甲に許諾する。当該実施権は、甲が第三者に再実施を許諾する権利を伴う。
（２） ⼄は、公的な⽀援を得た核融合の研究開発に関する計画のため、平等及び無差別の原則に基づき、当該⽣み出された知的財産権の取消し不能な、⾮排他的な、かつ、無償の実施権を加盟者及びイーター機構に許諾する。当該実施権は、イーター機構及び加盟者が第三者（加盟者については、それぞれの領域内の第三者に限る。）に再実施を許諾する権利を伴う。
（３） ⼄は、核融合の商業上の利⽤のため、平等及び無差別の原則に基づき、⽣み出された知的財産権の⾮排他的な実施権を加盟者に許諾する。当該実施権は、加盟者が第三者（それぞれの領域内の第三者に限る。）に再実施を許諾する権利を伴う。当該実施権の許諾に係る条件は、⼄が第三者に対して当該⽣み出された知的財産権の実施権を許諾するときの条件よりも不利でないものとする。
（４） ⼄は、⽣み出された知的財産権の核融合以外の分野における利⽤を可能にするため、加盟者、国内機関、団体及び第三者と商業上の取決めを締結することが奨励される。
２ 前項の⽣み出された知的財産権が甲と⼄の共有に係るものである場合、甲と⼄は、共同して同項に基づく実施権の許諾を⾏う。
３ ⼄は、第１項に規定する実施権及び再実施を許諾する権利の許諾の記録を保持し、甲の求めに応じこれを甲に提供する。⼄は、上記記録に変更がある場合は、各年の上半期については、７
⽉１５⽇までに、下半期については翌年の１⽉１５⽇までに甲に報告書を提出する。
４ ⼄は、甲が当該記録をイーター機構及び加盟者に提供すること、並びに甲が⾃ら実施する核融合の研究開発に関する活動のため必要とする場合において⼄以外の⽇本の団体に提供することに、あらかじめ同意する。
５ ⼄は、⾮加盟者の第三者に対し、⽣み出された知的財産権の実施権を許諾する場合には、理事会が全会⼀致で決定する規則に従うものとし、甲の事前の同意を得て⾏うものとする。当該第三者への実施権の許諾は、平和的⽬的のための使⽤に限り⾏うものとする。ただし、当該規則の決定までは、⾮加盟者の第三者に対する当該実施権の許諾は認めない。
６ ⼄は、イーター機構⼜は加盟者に対して直接実施許諾できない理由があるときには、甲が第
１項第２号及び第３号に基づきイーター機構⼜は加盟者に再実施を許諾するための権利を伴う、
⽣み出された知的財産権の取消し不能な、⾮排他的な、かつ、無償の実施権を甲に許諾するものとする。
（背景的な知的財産権の実施）
第１０条 ⼄が契約物品その他仕様書に定める納⼊品に⽤いる背景的な知的財産権の実施権の許諾については、次の各号による。
（１） ⼄は、当該背景的な知的財産権（ただし、背景的な営業秘密を含まない。）が次のいずれかの要件を満たすときは、甲が⾃ら実施する核融合の研究開発に関する活動のために、平等及び無差別の原則に基づき、当該背景的な知的財産権の取消し不能な、⾮排他的な、かつ、無償の実
施権を甲に許諾する。当該実施権は、甲が研究機関及び⾼等教👉機関に再実施を許諾する権利を伴う。
イ イーター施設を建設し、運転し、及び利⽤するために必要とされること⼜はイーター施設に関連する研究開発のための技術を⽤いるために必要とされること。
ロ イーター機構に提供される契約物品を保守し、⼜は修理するために必要とされること。ハ 公的な調達に先⽴ち理事会が必要であると決定する場合において必要とされること。
（２） ⼄は、当該背景的な知的財産権（ただし、背景的な営業秘密を含まない。）が次のいずれかの要件を満たすときは、公的な⽀援を得た核融合の研究開発に関する計画のため、平等及び無差別の原則に基づき、当該背景的な知的財産権の取消し不能な、⾮排他的な、かつ、無償の実施権を加盟者及びイーター機構に許諾する。当該実施権は、イーター機構が再実施を許諾する権利並びに加盟者がそれぞれの領域内において研究機関及び⾼等教👉機関に再実施を許諾する権利を伴う。
イ イーター施設を建設し、運転し、及び利⽤するために必要とされること⼜はイーター施設に関連する研究開発のための技術を⽤いるために必要とされること。
ロ イーター機構に提供される契約物品を保守し、⼜は修理するために必要とされること。ハ 公的な調達に先⽴ち理事会が必要であると決定する場合において必要とされること。
（３） ⼄は、当該背景的な営業秘密が次のいずれかの要件を満たすときは、当該背景的な営業 秘密（イーター施設の建設、運転、保守及び修理のための⼿引書⼜は訓練⽤教材を含む。）の取消 し不能な、⾮排他的な、かつ、無償の利⽤権をイーター機構に付与する。当該利⽤権は、イータ ー機構が、協定の情報及び知的財産に関する附属書第４．２．３条（ｂ）に基づき、その下請負⼈ に再利⽤権を付与する権利及びフランス規制当局に当該背景的な営業秘密を伝達する権利を伴う。イ イーター施設を建設し、運転し、及び利⽤するために必要とされること⼜はイーター施設に 関連する研究開発のための技術を⽤いるために必要とされること。
ロ イーター機構に提供される契約物品を保守し、⼜は修理するために必要とされること。ハ 公的な調達に先⽴ち理事会が必要であると決定する場合において必要とされること。
ニ イーター施設に対して規制当局が要請する安全、品質保証及び品質管理のために必要とされること。
（４） ⼄は、当該背景的な営業秘密が次のいずれかの要件を満たすときは、加盟者が公的な⽀援を得た核融合の研究開発に関する計画のため、⾦銭上の補償を伴う私的契約によって、当該背景的な営業秘密の商業上の利⽤権の付与⼜は当該背景的な営業秘密を⽤いた契約物品と同⼀の物品の提供を求めた場合には、当該契約締結のため最善の努⼒を払うこととする。当該利⽤権の付与⼜は物品の提供に係る条件は、⼄が第三者に対して当該背景的な営業秘密の利⽤権を付与し、
⼜は当該背景的な営業秘密を⽤いた同⼀の物品を提供するときの条件よりも不利でないものとする。当該利⽤権が付与される場合には、当該利⽤権は、利⽤権者が契約上の義務を履⾏しない場合にのみ取り消すことができる。
イ イーター施設を建設し、運転し、及び利⽤するために必要とされること⼜はイーター施設に関連する研究開発のための技術を⽤いるために必要とされること。
ロ イーター機構に提供される契約物品を保守し、⼜は修理するために必要とされること。
ハ 公的な調達に先⽴ち理事会が必要であると決定する場合において必要とされること。
（５） ⼄は、当該背景的な知的財産権について、加盟者が核融合の商業上の利⽤のため、当該背景的な知的財産権の実施権の許諾を受けること⼜は当該背景的な知的財産権を⽤いた契約物品と同⼀の物品の提供を求めた場合には、当該要求の実現のため最善の努⼒を払うこととする。当該背景的な知的財産権の実施権は、当該加盟者の領域内にある第三者による核融合の商業上の利
⽤のために当該加盟者が再実施を許諾する権利を伴う。当該背景的な知的財産権の実施権の許諾に係る条件は、⼄が第三者に対して当該背景的な知的財産権の実施権を許諾するときの条件よりも不利でないものとする。当該背景的な知的財産権の実施権は、実施権者が契約上の義務を履⾏しない場合にのみ取り消すことができる。
（６） ⼄は、前号に定める⽬的以外の商業上の⽬的のため、加盟者から求めがあった場合は、当該背景的な知的財産権が次のいずれかの要件を満たすときは、当該背景的な知的財産権の実施権を許諾することが奨励される。⼄が、当該背景的な知的財産権の実施権を当該加盟者に許諾する場合には、当該背景的な知的財産権の実施権は平等及び無差別の原則に基づき許諾されるものとする。
イ イーター施設を建設し、運転し、及び利⽤するために必要とされること⼜はイーター施設に関連する研究開発のための技術を⽤いるために必要とされること。
ロ イーター機構の提供される契約物品を保守し、⼜は修理するために必要とされること。ハ 公的な調達に先⽴ち理事会が必要であると決定する場合において必要とされること。
２ 前項の背景的な知的財産権が甲と⼄の共有に係るものである場合、甲と⼄は、共同して当該背景的な知的財産権の実施権の許諾を⾏う。
３ ⼄は、第１項に規定する実施権及び再実施を許諾する権利の許諾の記録を保持し、甲の求めに応じこれを甲に提供する。⼄は、上記記録に変更がある場合は、各年の上半期については７⽉
１５⽇までに、下半期については翌年の１⽉１５⽇までに甲に報告書を提出する。
４ ⼄は、甲が当該記録をイーター機構及び加盟者に提供すること、並びに甲が⾃ら実施する核融合の研究開発に関する活動のため必要とする場合において⼄以外の⽇本の団体に提供することに、あらかじめ同意する。
（知的財産権の帰属の例外）
第１１条 ⼄は、本契約の⽬的として作成される提出書類、プログラム及びデータベース等の納
⼊品に係る著作権は、全て甲に帰属することを認め、⼄が著作権を有する場合（第８条に基づき従業者等から承継する場合を含む。）であっても、⼄は、xxx著作権（著作xx第 21 条から第
28 条までに定める全ての権利を含み、⽇本国内における権利に限らない。）を甲に譲渡する。xxx譲渡の対価は、本契約書に定める請負の対価に含まれる。
２ 前項の規定により著作権を⼄から甲に譲渡する場合において、当該著作物を⼄が⾃ら創作したときは、⼄は、著作者⼈格権を⾏使しないものとし、当該著作物を⼄以外の第三者が創作したときは、⼄は、当該第三者に著作者⼈格権を⾏使しないように必要な措置を講じるものとする。
（下請負⼈に対する責任）
第１２条 ⼄は、本契約⼀般条項の規定に従い、下請負⼈に対し本契約の⼀部を履⾏させる場合、本特約条項に基づく⼄の⼀切の義務を⼄の責任において当該下請負⼈に遵守させるものとする。
（有効期間）
第１３条 本契約⼀般条項の定めにかかわらず、本特約条項の定めは協定の終了後⼜は⽇本国政府の協定からの脱退後も効⼒を有する。
（⾔語）
第１４条 本特約条項に定める⼄から甲への書⾯による報告は、和⽂だけでなく、英⽂でも提出することとし、両⽂書は等しく正⽂とする。
（疑義）
第１５条 本特約条項の解釈⼜は適⽤に関して疑義が⽣じた場合、協定の規定が本特約条項に優先する。
別添図書 5 『イーター調達に係る貨物の免税輸⼊について』
イーター事業の共同による実施のためのイーター国際核融合エネルギー機構の特権及び免除に関する協定（イーター協定）に基づき、イーターに係る貨物の⽇本国内機関(JADA)及びメーカー・商社による輸⼊関税及び引取りに係る内国消費税の免税輸⼊を可能とする例外的な措置について、以下の要件等を遵守することで免税法令の適⽤対象となることがxxxx。
1. 免税適⽤のための要件
(1) 免税適⽤となる貨物
・イーター活動（R&D 及びクォリフィケーションを含む）のためだけに使⽤される物品を適⽤対象とする。
・この内、完成品（本契約における納⼊品を⾔う）のみを適⽤対象とする。
・ただし、8 割⽅以上完成している物品については、ほぼ完成品の輸⼊とみなし、適⽤対象とする。
(2) 免税適⽤とならない貨物
・原材料及び資機材、並びに製作/加⼯治具等。
・本契約締結⽇よりも前に輸⼊した物品。
・上記(1)に該当する物品と該当しない物品とが混在して輸⼊され、別個に通関申告が出来ない場合。
疑義が⽣じる場合には、輸⼊前に量研機構担当者と別途協議するものとする。
2. 必要な⼿続き
(1) 1.(1)に該当する貨物を輸⼊する際には、輸⼊⼿続きを開始する前に必ず量研機構の契約担当者に申し出ること。免税適⽤に疑義がある場合も同様とする。
(2) 受注者は、輸⼊申告前に量研機構から発⾏される「確認書」のxxを受領し、輸⼊通関書類と併せて申告すること。
3. 契約に係る注意事項
・免税輸⼊通関のためには、通関申告前に、量研機構から通関を予定している税関に連絡する必要がある。（その際、輸⼊通関書類及び「確認書」（写し）の提出をしている）。
・契約に際しては、免税を加味しない⾦額で契約を実施するが、免税が適⽤された場合には、免税相当額を減額して⽀払うこととし、事前に書⾯をもって確認する。
・免税適⽤可否については、通関する担当税関が最終判断を担うが、(1)にて免税適⽤となりうる貨物に関しては、免税となるよう誠意をもって量研機構担当者と協⼒すること。
2.免税適⽤法令−抜粋（参考）
(1) 関税定率法（外交官⽤貨物等の免税）
第⼗六条 左の各号に掲げる貨物で輸⼊されるものについては、政令で定めるところにより、その関税を免除する。
⼀ 本邦にある外国の⼤使館、公使館その他これらに準ずる機関に属する公⽤品。但し、外国にある本邦のこれらの機関に属する公⽤品についての関税の免除に制限を附する国については、相互条件による。
(2) 輸⼊品に対する内国消費税の徴収等に関する法律（免税等）
第⼗xx xの各号に掲げる課税物品で当該各号に規定する規定により関税が免除されるもの
（関税が無税とされている物品については、当該物品に関税が課されるものとした場合にその関税が免除されるべきものを含む。第三項において同じ。）を保税地域から引き取る場合には、政令で定めるところにより、その引取りに係る消費税を免除する。
三 関税定率法第⼗六条第⼀項 各号（外交官⽤貨物等の免税）に掲げるもの以上
VERSION CREATED ON / VERSION / STATUS
19 Mar 2010 / 1.1 / APPROVED
IDM UID
2MLX45
EXTERNAL REFERENCE
MQP Quality Plan
QP Template for suppliers and subcontractors
This template is for suppliers and their subcontractors to produce a Quality Plan. This is recommended template for users, not mendatory.
Approval Process | |||
Name | Action | Affiliation | |
Author | Park S. | 19-Mar-2010:signed | IO/DG/SQS/QA |
CoAuthor | |||
Reviewers | |||
Approver | Sands D. | 19-Mar-2010:approved | IO/DG/SQS/QA |
Document Security: level 1 (IO unclassified) RO: Xxxxx Xxxxx | |||
Read Access | AD: ITER, AD: External Collaborators, AD: Division - Quality Assurance, AD: ITER Management Assessor, project administrator, RO | ||
PDF generated on 11-Sep-2011
Change Log | ||||
Title (Uid) | Version | Latest Status | Issue Date | Description of Change |
QP Template for | v1.1 | Approved | 19 Mar | At the section 7, wordings are changed from |
suppliers and | 2010 | (proposed) suppliers or subcontractors to (proposed) | ||
subcontractors | suppliers and suncontractors specifying what work | |||
(2MLX45_v1_1) | they will be performing. | |||
QP Template for | v1.0 | Signed | 12 Feb | |
suppliers and | 2010 | |||
subcontractors | ||||
(2MLX45_v1_0) | ||||
PDF generated on 11-Sep-2011
Template for Suppliers and subcontractors of a DA | |||
QUALITY PLAN | |||
Document Number: | Revision Number: | ||
ITER PP Number: | ITER PA Number: | ||
Title of Item: | |||
Name of DA: | |||
Supplier of the DA: | |||
Prepared by Supplier | Approved by Supplier | Approved by DA | ITER Acceptance |
Position: Name & signature Date: | Position: Name & signature Date: | Position: Name & signature Date: | Position: Name & Signature Date: |
<PP: Procurement Package, PA: Procurement Arrangement>
※ This is a recommended template for user’s guiding to develop a Quality Plan.
1. Scope |
[This section shall describe the scope of work to be covered by this Quality Plan] |
2. Quality Management |
2.1 Description of Quality Management System of the organization: [Provide certifications of recognized Quality Standards and valid date of the certifications, if any] 2.2 Detailed the breakdown of responsibilities within the organization: [Add the organization flow chart] 2.3 Identify the different (external) organizations involved: [Add the relationship flow chart between different organizations] 2.4 Identify within the different organizations involved the key individuals responsible for: [Ensuring that the activities performed in connection with the particular contract are planned, implemented and controlled and their progress monitored, Communicating requirements peculiar to the contract to all affected organizations, Resolving problems that may arise at interfaces between the organisations involved] 2.5 Identify any access restrictions of IO to the premise of the supplier or its subcontractors that may apply: |
3. Contract Review |
[Indicate how, when and by whom contract requirements are to be reviewed and the review recorded] |
4. Documents |
[Show how, when and by whom documents will be controlled, and what kinds of documents will be submitted to IO] |
5. Design |
[Indicate, if an organization performs design activities for the contract; how, when and by whom design will be controlled, including: - when, how, and by whom the design process is to be carried out, controlled and documented, - the arrangements for the review, verification and validation of design output conformity to design inputs requirements. Where applicable, indicate the extent to which the IO will be involved in design activities, such as participation in design reviews and design verification. Reference applicable codes, standards and regulatory requirements. A list the computer programs to be used and indicate how, when, and by whom they will be controlled. Otherwise “not applicable”.] |
6. Procurement |
[Show how, when and by whom procurements will be controlled. Any important Items or activities that are to be purchased or subcontracted. (Proposed) suppliers or subcontractors specifying what work they will be performing. Relevant Quality Assurance Requirements and the methods to be used to satisfy regulatory requirements, which apply to, purchased or subcontracted products.] |
7. Identification and control of items |
[Where traceability is a requirement or necessary for the adequate control of the work, define its scope and extent, including; How affected items are to be identified? How contractual and regulatory traceability requirements are identified and incorporated into working documents? What records relating to such traceability are to be generated and how and by whom they are to be controlled?] |
8. Manufacture |
[Iindicate how processes, manufacture, assembly, inspections and tests will be controlled. Where appropriate, introduce or refer to: Relevant documented procedures and work instructions. The methods to be used to monitor and control processes. Criteria for workmanship. Use of special and qualified processes and associated personnel. Tools, techniques and methods to be used.] |
9. Inspection and testing |
[Show how, when and by whom inspection and test would be controlled, including;. Any inspection and test plan to be used, and how and by whom they are reviewed and approved. How and by whom inspection and test reports are reviewed and approved? Acceptance criteria to be applied. Acceptance of purchased or subcontracted items. Any specific requirements for the identification of inspections and tests status. The extent to which the IO and (Agreed) Notified Bodies will be involved, such as witnessing inspection and test.] |
10. Measuring and Test Equipment |
[Indicate the control system to be used for measuring and test equipment specifically used in connection with the contract, including: - Identification of such equipment, - Method of calibration, - Method of indicating and recording calibration status.] |
11. Handling, Storage, Packing, Shipping and Delivery |
[Show how, when and by whom handling, storage, packing, shipping and delivery will be controlled: - how contract requirements for handling, storage, packaging and shipping are to be met, - how the item will be delivered to the specified site in a manner that will ensure that its required characteristics are not degraded.] |
12. Records |
[This section should indicate: How records are to be controlled, including how legibility, storage and retrievability will be satisfied What records are to be kept What records are to be supplied to the IO, when and by what means How and by whom the records are reviewed and approved prior to inclusion in the deliverables handed over to the IO What form the records will take (such as paper, microfilm, tape, disc or other medium) and in what language the records will be provided.] |
13. Deviation and Non-Conformities |
[Indicate how, when and by whom deviations and non-conformities will be processed including those originating from suppliers and subcontractor.] |
14. Training and Qualification |
[Address any specific training requirement for personnel and how such training is accomplished and recorded.] |
15. Statistical Techniques |
[Where statistical techniques are relevant for establishing, controlling and verifying process capability and item characteristics, they should be indicated.] |
16. Assessment |
[Indicate how, when and by whom the implementation and effectiveness of the Quality Plan will be monitored.] |
17. Reference and Others (If any) |
[A list of documents referenced in this Quality Plan] |
❖ Italics in boxes are provided to give instructions and need to be deleted when completing the form with an actual information.
[Note] Preparation, implementation and approval of a Quality Plan
1. Much of the generic documentation needed to prepare a Quality Plan will normally already exist as part of the performer’s quality management documents and supporting procedures. The Quality Plan need only refer to this documentation and show how it is to be applied to the work contracted.
2. DAs shall prepare a Quality Plan and submit it to the IO for approval.
3. The DA Suppliers/Subcontractors Quality Plans are approved by the DA, and then submitted to the IO for acceptance.
4. Work shall not start until the relevant Quality Plan has been accepted by the IO.
5. Work shall be performed as directed in the Quality Plan. The performers (DAs, and their suppliers and subcontractors) shall monitor the implementation and effectiveness of the Quality Plan.
6. Documents referred to in the Quality Plan should be made available to the IO.
VERSION CREATED ON / VERSION / STATUS
16 Mar 2015 / 4.0 / Approved
IDM UID
22MFMW
EXTERNAL REFERENCE
MQP Detailed Policy
Requirements for Producing a Quality Plan
This document establishes the ITER requirements to be implemented by a Supplier/Contractor regarding the establishment of a Quality Plan which is mandatory for all entities supplying items and services to the ITER Organization.
Approval Process | |||
Name | Action | Affiliation | |
Author | Xxxxx X. | 17 Mar 2015:signed | IO/DG/SQS/QA |
Co-Authors | |||
Reviewers | Haange R. | 17 Mar 2015:recommended | IO/DG/DIP |
Approver | Xxxxxxxxx X. | 17 Mar 2015:approved | IO/DG/SQS |
Document Security: Internal Use RO: Croset Xxxx-Xxxxxxxx | |||
Read Access | LG: [DOC] Baseline Managers, LG: Contract/Finance/QA/DIN for AOP, LG: KO DA VV ELM etc Access, LG: 5th working group, GG: MAC Members and Experts, LG: Cryogenic Section line management, LG: IO XXXX, LG: IO DORO, LG: IO IRO, LG: CODAC division (IO I&C ), LG: [CCS] Veolia, GG: STAC Members & Experts, ... | ||
PDF generated on 17 Mar 2015
DISCLAIMER : UNCONTROLLED WHEN PRINTED – PLEASE CHECK THE STATUS OF THE DOCUMENT IN IDM
Change Log | |||
Requirements for Producing a Quality Plan (22MFMW) | |||
Version | Latest Status | Issue Date | Description of Change |
v4.0 | Approved | 16 Mar 2015 | Changes according to MQP doc Request - QXRACN: - Title changed “Requirements for Producing a Quality Plan” - Doc type changed to MQP Detailed Policy - Template changed for MQP Detailed Policy - “should” changed to “shall” throughout the whole document - “approved” changed to “accepted” throughout the whole document - Facility for waiving the requirement for a Quality Plan added in the scope - Clarifications added for the update of a Quality Plan |
v3.0 | Approved | 31 Mar 2009 | |
v2.0 | Approved | 22 Nov 2007 | |
v1.0 | Signed | 15 Dec 2005 | |
PDF generated on 17 Mar 2015
DISCLAIMER : UNCONTROLLED WHEN PRINTED – PLEASE CHECK THE STATUS OF THE DOCUMENT IN IDM
Table of Contents
6 PREPARATION AND ACCEPTANCE OF THE QUALITY PLAN 3
7.2.6 Identification and Control of items 5
7.2.9 Measuring and Test equipment 5
7.2.10 Handling, Storage, Packing, Shipping and Delivery 6
7.2.12 Deviations and Non-Conformances 6
7.2.13 Training and Qualification 6
7.2.14 Statistical Techniques 6
This document specifies ITER requirements to be implemented by a Performer regarding the establishment of a Quality Plan.
A dedicated Quality Plan must be prepared by all performers supplying items, services and activities to the ITER Organisation whether through cash procurement, in-kind procurement or task agreements. Where subcontractors are not performing Critical Quality Activities, this requirement may be waived in agreement with the IO Quality Officer.
IO | ITER Organization sometimes referred to as ITER |
Domestic Agency | An organization set up under the ITER Framework Agreement to provide goods or services to the ITER Organisation through Procurement Arrangements (PA) and Task Agreements (TA) |
Supplier | Any entity that provides goods or services to the ITER Organisation |
Subcontractor | An entity that performs work for the Supplier |
Performer | An all-inclusive term used to cover Domestic Agencies, Suppliers and Subcontractors |
Contract | An all-inclusive term used to cover Procurement Arrangements, Task Agreements and Contracts placed directly by the IO |
Critical Quality Activity | Any operation that if not performed correctly would affect Safety, Performance or Reliability |
Quality Plan | Document describing the operational quality system to ensure that: • Contract requirements will be met • Evidence of such compliance is maintained It covers the whole scope of the contract including work performed by suppliers/subcontractors and addresses all activities performed in connection with the contract. |
ITER Procurement Quality Requirements (22MFG4)
Each performer shall prepare a dedicated Quality Plan.
For contracts placed directly by the IO, this is sent to the IO for review and acceptance.
For Procurement Arrangements and Task Agreements, the DA submits a Quality Plan for IO review and acceptance however DA supplier/subcontractor Quality Plans are accepted by the DA, and then submitted to the IO for acceptance.
Quality Plans shall be submitted to the IO after suppliers/subcontractors are identified.
Quality Plans shall be brief and to the point, while giving sufficient visibility on the control of the activities to be carried out.
Quality Plans shall be revised, when appropriate, to reflect changes that have been made e.g.:
• to the requirements of the contract
• to the manner in which the contract is implemented
A revised Quality Plan shall be subject to the same acceptance procedure as the original Quality Plan. Work shall continue in accordance with the current approved Quality Plan until the revised Quality Plan is accepted.
6 Preparation and acceptance of the Quality Plan
DAs and IO direct contractors shall prepare a dedicated Quality Plan and submit it to the IO for acceptance.
The DA Suppliers/Subcontractors dedicated Quality Plans are accepted by the DA, and then submitted to the IO for acceptance.
Work shall not start until the relevant Quality Plan has been accepted by the IO.
Work shall be performed as directed in the Quality Plan. The performers shall monitor the implementation and effectiveness of the Quality Plan.
Documents referred to in the Quality Plan shall be made available to the IO.
IO acceptance of the Quality Plan shall not relieve the performer of any contractual obligations and responsibilities.
Quality Plans are living documents and shall be updated to identify any changes from the original e.g. change in design activities; the supply chain or surveillance management.
Revised Quality Plans must follow the same acceptance procedure as the original.
For the particular contract, the Quality Plan shall identify:
• the critical quality activities
• the specific allocation of resources, duties, responsibilities and authority
• details of all suppliers/subcontractors and how interfaces will be managed
• the specific procedures, methods and work instructions to be applied
• the specific methods of communication, both formal and informal, to be established between working groups
The level of detail in the plan shall be consistent with:
• the technical requirements of the contract
• the safety and operational importance of the items involved
• the complexity of the organizations, functions and activities involved
• the degree of design innovation
• the involvement of innovative processes
• the involvement of processes which cannot be fully verified by inspection or test
• the degree to which functional compliance can be demonstrated by inspection or test
• design, performance or manufacturing margins
Much of the generic documentation needed to prepare the Quality Plan will normally already exist as part of the performer’s quality documents and supporting procedures. The Quality Plan
need only refer to this documentation and show how it is to be applied to the particular contract.
The Quality Plan may be a single document that covers the whole scope of the contract, including work performed by subcontractors. The plan may also be the compilation of coordinated separate and well defined documents.
It is not essential for the Quality Plan to follow the structure outlined below which is given for guidance.
The elements listed in the following sections are neither prescriptive nor exhaustive and shall be addressed only where relevant:
The plan shall:
• identify all critical quality activities
• identify the different organizations involved
• detail the breakdown of responsibilities
• identify within the different organizations involved the key individuals responsible for:
▪ ensuring that the activities performed in connection with the particular contract are planned, implemented and controlled and their progress monitored
▪ communicating requirements peculiar to the specific contract to all affected organizations
▪ resolving problems that may arise at interfaces between the organisations involved
An organization flow chart could facilitate the understanding.
The plan shall indicate how, when and by whom contract requirements are to be reviewed and the review recorded.
The plan shall show how, when and by whom documents will be controlled.
The plan shall show how, when and by whom design will be controlled, including:
• when, how and by whom the design process is to be carried out, controlled and documented
• the arrangements for the review, verification and validation of design output conformity to design inputs requirements
Where applicable, the plan shall indicate the extent to which the IO will be involved in design activities, such as participation in design reviews and design verification.
The plan shall reference applicable codes, standards and regulatory requirements. The plan shall:
• list the computer programs to be used
• indicate how, when and by whom they will be controlled
The plan shall show how, when and by whom procurements will be controlled, including:
• any important items or activities that are to be purchased or subcontracted
• the relevant quality assurance requirements
• the proposed suppliers or subcontractors
• the methods to be used to evaluate, select and control suppliers and subcontractors
• the methods to be used to satisfy regulatory requirements, which apply to, purchased or subcontracted products
7.2.6 Identification and Control of items
Where traceability is a requirement or necessary for the adequate control of the work, the plan shall define its scope and extent, including:
• how affected items are to be identified
• how contractual and regulatory traceability requirements are identified and incorporated into working documents
• what records relating to such traceability are to be generated and how and by whom they are to be controlled
The plan shall indicate how processes, manufacture, assembly, inspections and tests will be controlled.
Where appropriate, the plan shall introduce or refer to:
• relevant documented procedures and work instructions
• the methods to be used to monitor and control processes
• criteria for workmanship
• use of special and qualified processes and associated personnel
• tools, techniques and methods to be used
7.2.8 Inspection and Test
The plan shall show how, when and by whom inspection and test would be controlled, including:
• any inspection and test plan to be used, and how and by whom they are reviewed and approved
• how and by whom inspection and test reports are reviewed and approved
• acceptance criteria to be applied
• acceptance of purchased or subcontracted items
• any specific requirements for the identification of inspections and tests status
• the extent to which the IO and (Agreed) Notified Bodies will be involved, such as witnessing inspection and test
7.2.9 Measuring and Test equipment
The plan shall indicate the control system to be used for measuring and test equipment specifically used in connection with the particular contract, including:
• identification of such equipment
• method of calibration
• method of indicating and recording calibration status
7.2.10 Handling, Storage, Packing, Shipping and Delivery
The plan shall show how, when and by whom handling, storage, packing, shipping and delivery will be controlled:
• how contract requirements for handling, storage, packaging and shipping are to be met
• how the item will be delivered to the specified site in a manner that will ensure that its required characteristics are not degraded
The plan shall indicate:
• how records are to be controlled, including how legibility, storage and retrievability will be satisfied
• what records are to be kept
• what records are to be supplied to the IO, when and by what means
• how and by whom the records are reviewed and approved prior to inclusion in the deliverables handed over to the IO
• what form the records will take (such as paper, microfilm, tape, disc or other medium) and in what language the records will be provided
7.2.12 Deviations and Non-Conformances
The plan shall indicate how, when and by whom deviations and non-conformances will be processed including those originating from suppliers and subcontractors.
7.2.13 Training and Qualification
The plan shall address:
• any specific training requirement for personnel
• how such training is accomplished and recorded
Where statistical techniques are relevant for establishing, controlling and verifying process capability and item characteristics, they shall be indicated in the plan.
The plan shall indicate how, when and by whom the implementation and effectiveness of the Quality Plan will be monitored.
The Quality Plan is an integral part of the contract. Upon completion of the work, the Quality Plan shall be included in the data package handed over to the IO.
VERSION CREATED ON / VERSION / STATUS
28 May 2019 / 2.5 / Approved
IDM UID
2EZ9UM
EXTERNAL REFERENCE / VERSION
Guideline
ITER Vacuum Handbook
ITER Vacuum Handbook.
Updated to include changes reviewed under scope of mPCR 260 Change Notice "PCR-M260
- Application of ITER Vacuum Handbook to standard products, clarification of requirements and minimal update to reflect the phase of the ITER project" for "ITER Vacuum Handbook (2EZ9UM v2.3)": review and approval (SK47R3 v1.0).
v2.5 is v2.3+ changes introduced through mPCR260. there is no change between v2.4 and v2.5.
Approval Process | |||
Name | Action | Affiliation | |
Author | Worth L. | 28 May 2019:signed | IO/DG/COO/PED/FCED/VS |
Co-Authors | |||
Reviewers | Xxxxxx X. | 28 May 2019:recommended | IO/DG/COO/PED/FCED/VS |
Approver | Xxx X.- S. | 28 May 2019:approved | IO/DG/COO |
Document Security: Internal Use RO: Xxxxxxxxx Xxxxxxx | |||
Read Access | GG: MAC Members and Experts, GG: STAC Members & Experts, AD: ITER, AD: External Collaborators, AD: IO_Director-General, AD: EMAB, AD: EUROfusion-DEMO, AD: Auditors, AD: ITER Management Assessor, project administrator, RO, LG: Section Scheduling, AD: OBS - Vacuum Section (VS) - EXT, AD: OBS - Vacuum ... | ||
Change Log | |||
ITER Vacuum Handbook (2EZ9UM) | |||
Version | Latest Status | Issue Date | Description of Change |
v1.0 | Signed | 27 Aug 2008 | |
v1.1 | Signed | 28 Aug 2008 | |
v1.2 | Signed | 22 Oct 2008 | |
v1.3 | Signed | 27 Oct 2008 | |
v1.4 | Signed | 17 Dec 2008 | |
v2.0 | Signed | 10 Apr 2009 | |
v2.1 | In Work | 27 May 2009 | |
v2.2 | Signed | 28 May 2009 | |
v2.3 | Approved | 12 Jun 2009 | VH ref. Original sentence V2.2 Modified sentence V2.3 7.1.5 Weld Finish & Repair The size and magnitude of weld leaks found shall be reported to the ITER Vacuum RO and no weld repairs shall be carried out without prior agreement. All weld repairs shall be qualified in accordance with the relevant design and construction codes where applicable, and with Section 7.1.2 above. Where RCCMR or ASME VIII is not applied, if a weld leak is found, the repair procedure shall be subject to specific acceptance by the ITER vacuum RO as well any other relevant approvals. The size and magnitude of all leaks found on welds forming a vacuum boundary shall be reported to the ITER Vacuum RO. All repair welds forming part of a vacuum boundary shall be qualified in accordance with the relevant design and construction codes where applicable, and with Section 7.1.2 above. Where RCCMR or ASME VIII is not applied, if a weld leak is found, the repair procedure shall be subject to specific acceptance by the ITER vacuum RO as well any other relevant approvals. 9 Confinement and Vacuum Containment VQC 2A components that are considered to be vulnerable shall |
PDF generated on 28 May 2019
DISCLAIMER : UNCONTROLLED WHEN PRINTED – PLEASE CHECK THE STATUS OF THE DOCUMENT IN IDM
normally be doubly vacuum contained with a monitored interspace connected to the Service Vacuum System. VQC 2A components that are considered to be vulnerable are recommended to be doubly vacuum contained with a monitored interspace connected to the Service Vacuum System. 12 Pipework Where practical, for components classified as VQC 2A, water pipes forming part of the cryostat vacuum boundary shall be doubly contained. Where it is not practical to doubly contain the pipework, all welded joints shall be full penetration butt welds subject to 100% Non-Destructive Testing (NDT). It is recommended that pipework classified as VQC 2A, water pipes forming part of the cryostat vacuum boundary, be doubly contained. Where the pipework is not doubly contained, all welded joints shall be full penetration butt welds subject to 100% Non-Destructive Testing (NDT). 17.2 Design of Bellows All vulnerable bellows for use on VQC 1 and 2 systems shall be of double construction (or accepted multilayer design) with a monitored interspace, unless they are accessible for maintenance and fitted behind an approved interlocked isolating valve. Where vulnerable bellows are be used on VQC 2 systems it is recommended that they be of double construction (or accepted multilayer design) with a monitored interspace. | |||
v2.4 | Revision Required | 10 Dec 2018 | Updated to include changes reviewed under scope of mPCR 260 Change Notice "PCR-M260 - Application of ITER Vacuum Handbook to standard products, clarification of requirements and minimal update to reflect the phase of the ITER project" for "ITER Vacuum Handbook (2EZ9UM v2.3)": review and approval (SK47R3 v1.0) |
v2.5 | Approved | 28 May 2019 | No change from V 2.4. v2.5 is v2.3 plus changes introduced by mPCR 260. V2.5 is to be applied for future contracts/PAs. |
ITER Vacuum Handbook | ||
Revision: Issue 2.5 | Date:28th May 2019 | Page 1 of 48 |
ITER Vacuum Handbook
ITER Vacuum Handbook | ||
Revision: Issue 2.5 | Date:28th May 2019 | Page 2 of 48 |
1 Background 6
2 Scope of this Handbook 6
2.1 Communications and Acceptance 7
3 Vacuum Classification System (VQC) 7
3.1 Definition 7
3.2 Notification of the Vacuum Classification 8
3.3 Components without a Vacuum Classification 8
3.3.1 Supply 8
3.3.2 Connections Between Systems 9
4 Deviations and Non-Conformances 9
5 Materials for Use in Vacuum 9
5.1 Materials Accepted for Use in Vacuum 9
5.2 Adding Materials to the Accepted List for Vacuum 9
5.3 Metallic Machined Components and Fittings 10
5.3.1 Final Thickness < 5 mm 10
5.3.2 Final Thickness between 5 mm and 25 mm 10
5.3.3 Manufacture of Vacuum Flanges 10
5.4 Outgassing 11
5.5 Hot Isostatic Pressing 12
5.6 Castings 12
5.7 Plate Material 12
6 Cutting and Machining 13
6.1 Use of Cutting Fluids 13
6.1.1 General 13
6.1.2 VQC 1 and 3 Cutting Fluids 13
6.1.3 VQC 2 and 4 Cutting Fluids 14
6.2 Cleaning Prior to Joining 14
7 Permanent Joining Processes 14
7.1 Welded Joints 14
7.1.1 Joint Configuration 15
7.1.2 Qualification of Welding Processes 16
7.1.3 Selection of the Welding Process 16
7.1.4 Inspection and Testing of Production Welded Joints 16
7.1.5 Weld Finish & Repair 17
7.1.6 Helium Leak Testing of Production Welds 17
7.1.7 Helium Leak Testing after Repair of Welds 18
7.2 Brazed and Soldered Joints 18
7.2.1 Design of Brazed Joints 18
7.2.2 Qualification of Brazed joints 18
7.2.3 Inspection and Testing of Brazed Joints 19
ITER Vacuum Handbook | ||
Revision: Issue 2.5 | Date:28th May 2019 | Page 3 of 48 |
7.3 Diffusion Bonding 19
7.4 Explosion Bonding 19
7.5 Adhesive Bonding 19
8 Surface Finish 19
8.1 Surface Roughness 19
8.2 Coatings 20
9 Confinement and Vacuum Containment 21
10 Trapped Volumes 22
11 Connections to the Service Vacuum System 22
12 Pipework (Pipe & Fittings) 23
12.1 General 23
12.2 Pipework Sizes 23
13 Demountable Joints 23
14 Fasteners and Fixings 24
14.1 Tapped Holes 24
14.2 Bolts 25
14.2.1 Bolts for use on the Vacuum Boundary (P < 0.15 MPa) 25
14.2.2 Prevention of Bolt Seizing 25
14.2.3 Bolt Locking 25
14.3 Riveting 25
14.4 Bearings and Sliding Joints 25
15 Windows and Window Assemblies 26
15.1 General 26
15.2 Qualification of Window Assemblies 26
15.3 Testing of Window Assemblies 26
16 Vacuum Valves and Valve Assemblies 27
16.1 Acceptance Testing of Vacuum Valves and Valve Assemblies 27
17 Bellows and Flexibles 28
17.1 General 28
17.2 Bellows Protection 28
17.3 Design of Bellows 28
17.4 Qualification of Bellows 29
17.5 Testing & Inspection of Bellows 29
17.6 Bellows Protection 30
18 Feedthroughs 30
18.1 General 30
18.2 Xxxxxxx Breakdown 30
19 Electrical Breaks 30
20 Cables for use in Vacuum 31
ITER Vacuum Handbook | ||
Revision: Issue 2.5 | Date:28th May 2019 | Page 4 of 48 |
20.1 General 31
20.2 Connectors and Terminations 31
21 Interconnection between VQC 1 systems 32
22 Proprietary Components 32
23 Vacuum Instrumentation 32
24 Cleaning and Handling 33
24.1 Cleaning 33
24.2 Design Rules for Cleanability 33
24.3 Mechanical Processes on Vacuum Surfaces 34
24.4 Pickling/passivation of Steels and Copper 34
24.5 Post-Cleaning Handling of Vacuum Equipment 34
24.6 Cleanliness during the Assembly of Vacuum Equipment 35
25 Leak Testing 35
25.1 General 35
25.2 Maximum Acceptance Leak Rates 36
25.3 Design Considerations for Leak Testing 36
25.4 Scheduling of Leak Tests 37
25.5 Methods and Procedures 39
25.6 Acceptance Leak Testing at the Supplier’s Premises 40
25.7 Acceptance Criteria for Leak Testing 40
25.8 Acceptance Leak Testing at the ITER site 41
25.9 Reporting of Leak Tests 41
26 Baking 42
26.1 General 42
26.2 VQC 1 Components (non plasma-facing) 42
26.3 VQC 1 Components (plasma-facing) 43
26.4 VQC 2 Components 43
26.5 VQC 3 Components 43
26.6 VQC 4 Components 44
26.7 Vacuum Conditioning of Carbon Composites 44
26.8 Documentation to be Supplied for Vacuum Baking 44
27 Draining and Drying 44
27.1 Design Considerations for Draining and Drying 44
27.2 Components Delivered to ITER 45
28 Marking of Vacuum Equipment 45
29 Packaging and Handling of Vacuum Equipment 45
30 Incoming Inspection at ITER of Vacuum Equipment 46
31 Long Term Storage of Vacuum Equipment 47
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32 QA and Documentation 47
33 Acknowledgements 47
34 List of Attachments 48
35 List of Appendices 48
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1 Background
ITER will include one of the largest and the most complex high vacuum systems ever built. Reliable vacuum is key to the success of the ITER project. A characteristic of high vacuum is that the functionally of a whole system can be lost by not appreciating and paying attention to the effect of small details. Due to the pervasive nature of vacuum in the ITER machine, there are very few ITER systems which will not have an important vacuum interface. Orders of magnitude improvements in vacuum reliability are required compared to existing and past fusion devices to achieve the ITER goals because of the scaling in the number of components and the physical size of ITER.
There are two main vacuum systems on ITER, the Torus primary vacuum which requires ultra-high vacuum (UHV) conditions, and the cryostat primary vacuum which requires clean insulation vacuum conditions with permissible operating pressures typically 2 orders of magnitude higher than the torus. In addition, there are secondary vacuums and a cryogenic guard vacuum system. Details are given in Appendix 1.
2 Scope of this Handbook
This Vacuum Handbook outlines the mandatory requirements for the design, manufacturing, testing, assembly and handling of vacuum items to realise and subsequently to maintain the various different ITER vacuum systems. In addition, this Handbook provides significant guides and helpful information which can be used in the production of procurement specifications for ITER components.
The ITER Vacuum Handbook is issued as a high level project requirements document since it is imperative that the requirements contained in this Handbook are followed by the International Organisation, the Domestic Agencies and Industries to ensure that ITER operations are ultimately successful.
This Handbook is supported by a set of Attachments and Appendices. The Attachments are subject to the same approval process as the main handbook and contain detailed mandatory requirements. With the exception of Appendices 3 & 4 the Appendices are for guidance and provide detailed information, guides, specifications, relevant processes and lists of standard and approved components, vacuum materials, etc. Appendices 3 & 4 contain lists of materials (and associated processes) which have been approved for use on, or in, the ITER vacuum systems. Only materials (or associated processes) listed in Appendices 3 & 4 shall be used in, or on ITER vacuum systems. All Appendices are working documents subject to regular update.
The Appendices can be used by suppliers to aid the production of vacuum components, specifications and procedures which satisfy the mandatory requirements of the ITER Vacuum Handbook.
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2.1 Communications and Acceptance
To satisfy the requirements of this handbook acceptance or accepted is called for in various places, this acceptance is to be given by the ITER Vacuum Responsible Officer (RO) or his or her nominated representative. Acceptance is to be a positive and recorded action, either by signature or by electronic means. The ITER Vacuum RO will respond in the shortest possible time from receipt of the request, normally within two weeks. An explanation will be provided if the proposal is rejected or if modification is required.
Requests for Acceptance shall be sought through the submission of the Request for
Acceptance (ITER_D_9AY4HD).
Where the Interface compliance check list of an ITER Procurement Arrangement is signed by the ITER Vacuum Responsible officer this shall be taken as acceptance of these items which are detailed in the Procurement Arrangement. Where an ITER Procurement Arrangement does not provide adequate details required for acceptance of these items, then the PA can define the processes to be followed leading to acceptance in which case these processes shall be followed rather than processes of the ITER Vacuum Handbook.
Iterations with both the Domestic Agencies and industry are expected to be necessary to meet the requirements of this Handbook.
Normal communication and approval channels set up in any specific contract for supply should not be bypassed - rather that they should be the normal route by which acceptance requests are made and received.
A possible route of communication and acceptance would therefore be:-
Supplier (Contractor) ↔ Domestic Agency Contract Responsible Officer ↔ ITER Technical Responsible Officer ↔ ITER Vacuum Responsible Officer.
A definition of terms can be found in Appendix 21.
3 Vacuum Classification System (VQC)
3.1 Definition
Every vacuum component is given a Vacuum Classification to denote its area of service on ITER. These are defined as:
VQC 1X: Torus primary vacuum components or components which become connected to the torus high vacuum through the opening of a valve during normal operations.
VQC 2X: Cryostat primary vacuum components or components which become connected to the cryostat vacuum through the opening of a valve during normal operations.
VQC 3X: Interspaces and auxiliary vacuum systems connected to the service vacuum system or roughing lines.
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VQC 4X: Cryogenic guard vacuum systems or items connected to the cryogenic guard vacuum system.
VQC N/A: Components not exposed to vacuum.
Where:
X = A denotes boundary components.
X = B denotes components within vacuum but which do not form part of the vacuum boundary.
Where a component is part of the boundary between two different vacuum classes, it shall normally meet the more demanding requirements of the higher class unless the division between classes is shown on the drawings. Joints which separate classes shall always be classified according to the requirements of the more demanding class. The surface finish requirements appropriate to each class are to be applied. Surface cleaning of the less highly classified surface may be in accordance with the reduced requirements of that classification provided that the more highly classified surface is not degraded in the process.
Some examples of classification are:
In vessel divertor cassette water cooling pipe - VQC 1A.
In-vessel remote handling rail - VQC 1B.
Cryogenic lines within the cryostat - VQC 2A.
Support within the cryostat - VQC 2B.
Cryogenic transfer-line between cryo-plant and tokamak complex - VQC 4A.
Typical base pressures and pumping speeds for the various vacuum systems are given in Appendix 1.
3.2 Notification of the Vacuum Classification
The VQC for a particular component shall be marked on any drawing related to and stated in any specification for that component. If this is not the case, the classification can be provided by the ITER Vacuum Responsible Officer (RO) upon request.
3.3 Components without a Vacuum Classification
3.3.1 Supply
In order ensure vacuum components which are intended for service on ITER and are not classified under section 3 (such as, for e.g., mechanical displacement pumps), meet the requirements for safety and performance the IO shall approve Technical Specifications for the supply of such equipment. Technical Specifications shall be submitted to the ITER Vacuum RO for review and subsequent approval prior to the commencement of the procurement process.
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3.3.2 Connections Between Systems
An item of vacuum equipment which is not classified under section 3 may be connected to an item with a VQC, e.g. a leak detector may be connected to a valve on the cryostat or a roughing pump may be connected to the torus vacuum system. In all such cases, the use of such items and the operations for which they are required shall be under administrative control. A written scheme of work shall be submitted on the appropriate form to the ITER Vacuum RO. The main criterion for approval of such a scheme of work (other than the necessity of the work being carried out) shall be an assessment by the ITER Vacuum RO of the possibility of contamination of the system bearing the VQC.
4 Deviations and Non-Conformances
Requests for deviations from, and non-conformance with, the requirements of the ITER Vacuum Handbook shall be made to the ITER IO in writing following the procedures detailed in the ITER Quality Assurance Program (IDM Ref: ITER_D_22K4QX) and ITER Deviations and Non-Conformances (IDM Ref: ITER_D_22F53X) documents. Recommendations on the approval of the non- conformance report will be made by the ITER Vacuum RO.
5 Materials for Use in Vacuum
5.1 Materials Accepted for Use in Vacuum
Only materials accepted for the relevant Vacuum Classification shall be used on ITER vacuum systems. All material for use in vacuum shall be clearly specified at the design stage and certified in accordance with EN 10204 3.1 or 3.2 before being used in manufacturing.
Materials which may be used without prior agreement on vacuum systems with the Vacuum Classifications stated in the table are listed in Appendix 3. Materials listed in this Appendix which are shown as being subject to restricted use for a particular Vacuum Classification are subject to either an overall quota or to particular restrictions on their position of use. Acceptance for any particular vacuum application of such a material shall be obtained by submitting the Material Acceptance Request Form (ITER_D_2MGWR4) to the ITER Vacuum RO. An example of this completed form is to be found in Appendix 3.
5.2 Adding Materials to the Accepted List for Vacuum
Materials which are not on the accepted list may be proposed for use in vacuum. If the vacuum properties of the material are not sufficiently well documented for an assessment to be carried out, a programme of measurement of the relevant properties shall be agreed between the proposer and the designated ITER Vacuum RO.
Details of materials to be considered for acceptance shall be submitted to the ITER Vacuum RO using the Material Acceptance Request Form (ITER_D_2MGWR4). The
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proposer shall agree in advance with the ITER Vacuum RO a plan detailing the type and method of testing to be used to qualify the material for use. The Materials Acceptance Request Form along with the test data, report and supporting documentation, including any supplier’s data (Certificates of Conformity, etc.), shall be submitted for consideration. These shall be assessed by the ITER Vacuum RO who will communicate the acceptance, refusal or restrictions on usage of the material to the originator of the request.
Materials qualified in this way may be added to Appendix 3.
5.3 Metallic Machined Components and Fittings
5.3.1 Final Thickness < 5 mm
All VQC 1A components which are machined from steel, austenitic steel or superalloys and which are of final thickness less than 5 mm and VQC 2A components which are machined from steel, austenitic steel or superalloys and which are of final thickness less than 2 mm and are designed to contain cryogenic helium1, shall be made from cross-forged material which is Electro-Slag Remelted (ESR) or Vacuum Arc Remelted (VAR).
The rate of inclusions in such steels shall be checked in accordance with ASTM E-45 Method D (or equivalent) to be within the following inclusion limits:
Inclusion Type A ≤ 1.0.
Inclusion Type B ≤ 1.0.
Inclusion Type C ≤ 1.0.
Inclusion Type D ≤ 1.5.
These requirements are synopsised in Table 5-2.
5.3.2 Final Thickness between 5 mm and 25 mm
VQC 1A components which are machined and are of final thickness between 5 mm and 25 mm shall be manufactured from approved steel (listed in Appendix 3), in the form of stock which has been cross-forged (upset forged).
These requirements are synopsised in Table 5-2.
5.3.3 Manufacture of Vacuum Flanges
Both halves of demountable flanges using metal seals are to be manufactured from cross or upset forged material.
1 At the time of writing this requirement is under approval and shall be included to the next version of this Handbook.
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Stainless steel used for the manufacture of knife-edge sealed flanges of any thickness for all vacuum classifications shall be from cross-forged ESR grade material blanks.
5.4 Outgassing
The outgassing rates of materials used on ITER vacuum systems shall be consistent with the values in Table 5-1. Appendix 17 gives details on how outgassing requirements are derived, how they can be achieved and how they may be measured.
Maximum Steady State Outgassing rate Pa.m3.s-1.m-2 | ||||
VQC+ | Outgas temperature C | Hydrogen isotopes | Impurities | Testing Guidelines |
1 | 100‡ | 1 x 10-7 | 1 x 10-9 | Appendix 17 |
2 | 20 | 1 x 10-7* | Appendix 17 | |
3 | 20 | 1 x 10-8 | Appendix 17 | |
4 | 20 | 1 x 10-7 | Published data and conformity to clean work plan. | |
For VQC 2, 3 and 4, the outgassing rate excludes the partial outgassing rates for water and hydrogen. ‡ The outgas test temperature can be reduced to 20 C for components which normally operate at cryogenic temperatures. + For CFC refer to section 26.7 * In the case of resins for magnets it is considered that this target outgassing rate will be achievable. However, a factor of 10 increase will be permitted as an acceptance criterion. | ||||
Table 5-1 - Outgassing rates pertaining to VQC
These limits have been produced by taking into account the total surface area expected, the available pumping speed, the desired pressure and post assembly conditioning time, with due consideration of what is reasonably achievable. The addition of novel high surface area components to the design requires specific acceptance and appropriate limits to be assessed.
Published data and/or experimental trials shall be used to show design and process consistency with the limits.
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An outgassing rate acceptance test shall be performed for all VQC 1 components to an accepted procedure such as those described in Appendix 17. Exceptions will be accepted for components which normally operate at a pressure above 1 Pa. Outgassing acceptance tests may, with prior acceptance, be performed using representative samples which follow, and are subjected to, the complete manufacturing process.
Where it is agreed that a specific vacuum component should not be subjected to a specific outgassing rate acceptance test, compliance shall be demonstrated by conformity to a clean work and quality plan.
5.5 Hot Isostatic Pressing
Hot Isostatic Pressing (HIP) of sintered material is allowable for use on all VQC components, provided that it is demonstrated that the components meet the mechanical and leak rate requirements for the proposed application and the vacuum boundary thickness is greater than 5mm. It must be demonstrated that HIP formed components comply with the outgassing rates in Table 5-1. Proposals for the use of HIP formed components, and the procedure for qualification of the components for use as vacuum containment, shall be subject to prior acceptance at the design stage.
These requirements are synopsised in Table 5-2.
5.6 Castings
For VQC 1, 2A & 3, metallic castings shall not normally be used. Where it is considered that a casting technology could provide acceptable porosity and meet the outgassing and leak rate requirements in the final application, then a vacuum properties validation program shall be proposed for acceptance.
These requirements are synopsised in Table 5-2.
5.7 Plate Material
Where hot or cold rolled plate material is used, it is recommended for all vacuum classes, that a surface parallel to the direction of rolling forms the vacuum boundary. This is due to the possibility of long leak paths caused by the stratification of inclusions.
For VQC1A applications which have been assigned Remote Handling Class 3 or are Non-RH classified (ITER_D_2FMAJY) where the component becomes embedded in ITER and could not in future be changed, hot or cold rolled plate material (approved steels from Appendix 3) produced with conventional smelting and refining processes such as Argon-Oxygen Decarburization (AOD), Vacuum Arc decarburization (VOD)) shall not be used where the transverse cross section across the vacuum boundary (wall thickness) is less than 25mm.
Where for VQC1A hot or cold rolled plate material (approved Steel – Appendix 3) is used with the transverse cross section crossing the vacuum boundary (wall thickness less than 25 mm), ESR or VAR low inclusion rate material shall be used which meets
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the inclusion limits as specified in Section 5.3.1 The component shall also be proven by leak testing in an environment which conforms as closely as possible to the operating conditions (See Section 25) with due consideration taken of the effects of possible leaks along laminations on the response time for the test method.
These requirements are synopsised in Table 5-2.
Nominal thickness (of vacuum boundary) | Plate / Bar1 | Forging4 | Pipe4 | Pipe, 4,5 (He, ≤ 2 mm) | HIP3 | Casting 4 | |||
Direction | Crosses2 | Parallel2 | |||||||
RH Class | 3, N/A | 1, 2 | 1, 2, 3, N/A | 1, 2, 3, NA | 1, 2, 3, NA | 1, 2, 3, NA | |||
≤ 5 mm | X | L | NR | F + L | NR | L | X | A | |
>5 mm ≤ 25 mm | X | L | NR | F | NR | NR | A | A | |
> 25 mm | L | NR | NR | NR | NR | NR | A | A | |
1VQC 1A, VQC 2A cryogenic helium pipework (pipe & fittings) < 2 mm 2Transverse cross section w.r.t. vacuum boundary or parallel w.r.t vacuum boundary 3All VQC 4 VQC 0X,0X &3A 5 Helium coolant, thickness less than 2 mm. X=Not Allowed F=Cross or Upset Forged L= Low inclusion in compliance with 5.3.1 and ESR/VAR remelting A=requires acceptance NR = No requirement N/A – not applicable | |||||||||
Table 5-2 Synopsised requirements pertaining to metallic components
6 Cutting and Machining
6.1 Use of Cutting Fluids
6.1.1 General
Care must be taken in manufacturing processes so as not to introduce contaminants into surfaces which may be difficult to remove later and which might result in degraded vacuum performance.
6.1.2 VQC 1 and 3 Cutting Fluids
Cutting fluids for use on VQC 1 and 3 systems shall be water soluble, non- halogenated and phosphorus and sulphur Free. The maximum allowable content of halogens, phosphorus, and sulphur is 200 ppm (each)
Accepted cutting fluids for use in VQC 1 and 3 vacuum applications are listed in Appendix 4. The use of other cutting fluids requires prior acceptance.
Acceptance for the use of any particular non-approved cutting fluid shall be obtained by submitting the Fluid Acceptance Request Form (ITER_D_48XLVJ) to the ITER Vacuum RO. An example of this form is to be found in Appendix 4.
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6.1.3 VQC 2 and 4 Cutting Fluids
For VQC 2 & 4 vacuum applications it is recommended that cutting fluids be water soluble, non-halogenated and phosphorus and sulphur free (< 200 ppm for each). They should be chosen from those listed in Appendix 4. Where this recommendation is not followed particular care shall be taken to ensure the appropriateness of the cleaning procedures (See section 24).
6.2 Cleaning Prior to Joining
To minimise the risk of trapped contamination which can subsequently cause leaks or enhanced outgassing, parts and sub-components shall be degreased using solvents or alkaline detergents, rinsed with demineralised water, and dried prior to joining in accordance with Section 24 below. The use of halogenated solvents is forbidden at any stage for systems of class VQC 1 and 3. Accepted fluids are listed in Appendix 4.
7 Permanent Joining Processes
Permitted joining techniques for vacuum applications and their applicability to each VQC are shown in Table 7-1. Proposals for joining techniques not listed here shall be submitted for prior acceptance.
7.1 Welded Joints
Lack of attention to the details of vacuum sealing weld design, qualification and testing has proved to be a significant cause of vacuum leaks on vacuum systems.
All vacuum welds, except those excluded below, shall be qualified, produced and inspected in accordance with Attachment 1. The requirements of Attachment 1 are mandatory until superseded by the ITER baseline Welding Handbook.
Where there is regulatory requirement to design and subsequently build a vacuum system to RCC-MR or ASME VIII, the requirements of these codes shall take precedence over the requirements of Attachment 1, while remaining in compliance with Section 7.1.6. In other cases where vacuum sealing welds are to be qualified, produced and inspected to meet a code, and there is variation between the requirements of the code and Attachment 1, the more extensive or stringent requirements shall be applied.
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VQC 1 | VQC 2 | VQC 3 | VQC 4 | |||||
A | B | A | B | A | B | A | B | |
Welded joints | | | | | | | | |
Brazed/solder ed joints | | | | ‡ | | | S | |
Diffusion bonding | | | | | | | | |
HIP | | | | | | | | |
Compression joints | S | S | | | | | | |
Adhesive bonding | S | | | | | | | |
Explosion bonding | | | | | | | | |
- indicates an acceptable technique S - indicates an unacceptable technique - application specific acceptance required ‡- For soldering of super conducting joints see Section 7.2 | ||||||||
Table 7-1 Joining methods applicable to VQC
7.1.1 Joint Configuration
The use of welds from both sides makes leak testing difficult and enhances the risk of trapped volumes forming virtual leaks or contaminant traps that are to be avoided. Thus, for all vacuum classes, vacuum sealing welds shall be either internal (i.e. facing the vacuum) or external. In VQC 2, double sided welding may be used where unavoidable, but an NDT inspection schedule giving 100% volumetric examination must be used to ensure that a full-thickness melt zone has been achieved.
The use of stitch welds on the vacuum facing side is prohibited.
For VQC 1A, VQC 2A and VQC 3A on the boundary to air or water, full penetration welds are required.
For VQC 4A (process to insulation vacuum) welds full penetration welds are required.
It is good engineering practice to design joints to be accessible for repair if necessary.
Butt welded joints are preferred to fillet or lap joints, since testability is improved. Fillet, corner, lap and cross joints should be avoided wherever possible on VQC 1 systems.
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Welds shall normally be made in such a way that they can be leak tested at the time of completion. Welds that cannot be inspected (see Sections 7.1.4 & 7.1.6 ) are not permitted for use on VQC 1 and VQC 3 and should be minimised for use on VQC 2 and VQC 4. Where leak detection is not practical at the time of completion, a test plan including provision for repair of the weld must be accepted at the design stage.
7.1.2 Qualification of Welding Processes
Qualification of welding processes for use on vacuum sealing welds shall follow the requirements of Attachment 1 and section 7.1.
A welding and inspection plan shall always be submitted to the ITER IO.
7.1.3 Selection of the Welding Process
The selected welding technique for vacuum applications (e.g. electron beam, laser or TIG welding) should produce a clean, pore free weld with minimal oxidation. Autogenous welding shall be used where practical.
7.1.4 Inspection and Testing of Production Welded Joints
All such inspection and testing shall be carried out using approved procedures in accordance with Attachment 1.
For all VQC 1A, VQC 2A water boundaries, vacuum boundary welds which become inaccessible and VQC2A cryogenic pipework connections, 100% volumetric examination of production welds shall be performed, unless a method of pre- production proof sampling is approved.
For VQC 4A (process to insulation vacuum) 100% volumetric examination of production welds shall be performed, unless a method of pre-production proof sampling is approved.
The range of thickness and preferred volumetric examination method to be applied is given in Table 7-2.
Wall Thickness (wt) (mm) | Preferred Volumetric Examination Method |
wt < 8 | Radiography |
8 < wt < 19 | Radiography & Ultrasonic |
wt > 19 | Ultrasonic or radiography |
Note: For wt > 19 mm ultrasonic examination of welds is preferred only in cases where radiographic examination would require excessive exposure times. | |
Table 7-2 Range of wall thickness and preferred volumetric examination method to be applied
For all other vacuum boundaries, volumetric examination of 10% of production welds shall be performed with the wall thickness limits specified in Xxxxx 0-0, xxxxxx x method of pre-production proof sampling is agreed by the ITER IO.
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On welds forming the vacuum boundary the use of liquid penetrant testing (LPT) or magnetic particle techniques shall not in general be permitted for the inspection of welds or in the inspection of weld preparations. This is because such substances may block leaks temporarily and can be difficult to remove satisfactorily.
Where there is a mandatory requirement to build a component to a code then the flexibility of the code to avoid the use of LPT on welds forming the vacuum boundary shall be a key factor in the assessment of that code for selection. The selection process shall be recorded and accepted.
Where a code selected for building a component requires the use of a qualified surface examination method, and LPT cannot be avoided, only the ITER vacuum qualified liquid dye penetrant (see Appendix 4) may be used. If the use of LDP is permitted, then cleaning must be performed to procedures qualified and subsequently accepted by the ITER Vacuum RO.
For VQC 1B welds which are subject to high cyclic stresses, the use of ITER qualified LDP for detection of surface defects is permitted subject to notification of this application to the ITER Vacuum RO.
For VQC 2B and 4B the use of ITER qualified LDP is permitted. The method of application and subsequent removal of LDP shall be performed to procedures qualified and accepted by the ITER Vacuum RO.
7.1.5 Weld Finish & Repair
Production welds used on all vacuum systems shall be left clean and bright but there is no vacuum requirement to machine the weld zone to match the surface finish of the parent material.
All weld regions shall be free from scale, voids, blowholes, etc., and there shall be no visible evidence of inclusions.
The size and magnitude of weld leaks found shall be reported to the ITER Vacuum RO and no weld repairs shall be carried out without prior agreement.
All weld repairs shall be qualified in accordance with the relevant design and construction codes where applicable, and with Section 7.1.2 above. Where RCCMR or ASME VIII is not applied, if a weld leak is found, the repair procedure shall be subject to specific acceptance by the ITER vacuum RO as well any other relevant approvals.
7.1.6 Helium Leak Testing of Production Welds
All vacuum sealing welds in each VQC shall be subject to helium leak testing in accordance with the procedures of Section 25.
Where multi-pass welding is required in the production of components of VQC 1A and VQC 2A, it is recommended that leak testing of the root weld pass shall be performed with only this pass completed. However, for multi-pass welding that takes place on the ITER site, this requirement is mandatory.
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If it has been agreed that liquid dye penetrant may be used for testing such a weld (see Section 7.1.4), the root weld leak test shall be performed before the application of this liquid.
Any leak which is found in the root weld to be above the minimum detectable leak rate of the equipment which has been accepted for use in the accepted procedures for such tests, must be repaired and re-tested before proceeding with further weld passes.
In all cases, a further leak test shall be carried out (see Section 25).
7.1.7 Helium Leak Testing after Repair of Welds
All repaired vacuum boundary welds shall be subject to full vacuum leak testing in accordance with the procedures of Section 25.
7.2 Brazed and Soldered Joints
Brazing shall be carried out in a vacuum, hydrogen or inert gas atmosphere. Torch brazing is not permitted except where unavoidable for VQC 2B. Where the use of brazing flux is unavoidable a cleaning procedure shall be qualified and submitted for acceptance to the ITER vacuum RO.
Brazing materials which contain silver are subject to specific quotas for components for VQC 1, 2 or 3 in systems where the irradiation environment may lead to significant silver transmutation to cadmium. The use of such materials is subject to prior acceptance.
Brazing is not permitted for any water to vacuum joint in VQC 1, 2 or 3.
Xxxxxxx is not permitted for VQC 4A where there is contact with cryogenic fluid.
All brazing techniques shall be to an accepted standard or to a procedure accepted
prior to manufacture.
On account of the relatively high vapour pressure of the solder, soft soldering (< 400C with Sn, Zn, alloys of Pb, Cd, etc) shall not be permitted for VQC 1 or VQC 2A, or VQC 3A and is only allowable on VQC 2B for applications which operate at a temperature < 60 K.
7.2.1 Design of Brazed Joints
The design of brazed joints shall be such as to minimise the risk of trapped volumes.
7.2.2 Qualification of Brazed joints
All brazing techniques shall be qualified to an accepted standard or to an accepted qualification programme. Tests on pre-production samples of brazed joints shall be performed to accepted procedures or to an accepted standard. Brazing procedure qualification shall be compliant with EN 13134:2000 (or equivalent).
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7.2.3 Inspection and Testing of Brazed Joints
Brazed joints shall be subject to qualification to ensure the vacuum integrity of the joint.
All brazed joints shall be inspected visually to ensure that the vacuum exposed braze regions are clean, flush and free from voids, blowholes, etc., that there is no visible evidence of inclusions and that the braze material has filled the joint without excessive over-run.
Where practicable, radiography of an agreed percentage sample of brazed joints shall be carried out. Where this is not practicable, then samples shall be produced for sectioning and microscopic examination.
The use of liquid dye penetrant or magnetic particle techniques shall not be permitted for the inspection of brazed joints or in the inspection of joint preparations.
All brazed joints which form part of a vacuum boundary shall be subject to 100% helium leak testing.
No braze shall be re-run for rectification of any sort without prior agreement.
7.3 Diffusion Bonding
Diffusion bonding of joints is acceptable for all VQC. If it is used, diffusion bonded inter-layers shall comprise materials listed in Appendix 3. Diffusion bonded joints shall be subject to the same vacuum qualification procedures as brazed joints to ensure the integrity of the joint and compliance with the requirements of this Handbook.
7.4 Explosion Bonding
Explosion bonding of metals is acceptable for all VQC. Explosion bonded joints shall be subject to the same vacuum qualification process as brazed joints to ensure the integrity of the joint and compliance with the requirements of this Handbook. Existing qualifications of the process may be used for VQC2 applications if compliant with the requirements of this Handbook.
7.5 Adhesive Bonding
Adhesive bonding may only be used in limited circumstances (see Table 7-1) and using materials listed in Appendix 3.
8 Surface Finish
8.1 Surface Roughness
Metallic components for different VQC shall be supplied with the maximum average surface roughness listed in Table 8-1. Surface roughness is defined in accordance with ISO 4287: 2000.
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Classification | Maximum average Surface Roughness Ra (µm) | Measurement Technique |
VQC 1 | 6.3 | Electric stylus |
VQC 2 | 12.5† | Electric stylus |
VQC 3 | 12.5 | Electric stylus |
VQC 4 | 12.5 | Electric stylus |
† Where to satisfy this surface roughness requirement additional machining would be required a rougher surface is accepted provided the surface is easily cleanable and can be shown not to catch fibres when wiped with a lint free cloth. | ||
Table 8-1 - Maximum permissible average surface roughness for metals
Generally, where the base material is not produced with an acceptable surface finish, such surface finishes may be achieved using techniques including:
Machining.
Electropolishing.
Bead Blasting in a slurry in a water jet with alumina or glass beads.
Surface Passivation / Pickling (see Section 24.4).
All processes on vacuum surfaces shall be followed by appropriate cleaning of the surface (see Section 24 below).
8.2 Coatings
Only materials accepted by ITER for the relevant Vacuum Classification shall be used for coatings on ITER vacuum systems (see Section 5).
Surface coatings for VQC1 shall be subject to qualification and acceptance at the design stage. The assessment of the coating shall include consideration of :-
The risk of the coating producing trapped volumes and temporary leak blocking.
The method of applying the surface coating (e.g. painting, chemical, plasma spray, etc.).
The chemical composition, morphology, cleaning and outgassing of the surface coating.
Conformance of the coating with the ITER outgassing requirements as detailed in Section 5.4.
The method for testing the adhesion of the surface coating to the substrate.
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9 Confinement and Vacuum Containment
Confinement is the term used for the physical enclosure of hazardous substances (e.g. tritium).
“Vacuum containment” is a term used for vacuum tight boundaries which cope with differential pressure in either direction. Vacuum containment may also provide a confinement function.
Vulnerable components are generally considered to be those components which have been shown to exhibit a failure rate higher than 10-5 per year in an experimental environment and typically include windows, bellows, lip seals, flexible hoses, metallic to non-metallic joints, feedthroughs, electrical breaks, thin walled material (<1.5 mm), and demountable seals. Reliability data and references can be found in Appendix 18.
VQC 2 high voltage electrical breaks and high voltage feedthroughs are considered vulnerable only if they have a specified failure rate greater than 10-5 per year or have been shown, in the specific design proposed, to exhibit a failure rate greater than 10-5 per year.
VQC 1A components that are considered to be vulnerable shall be doubly vacuum contained with a monitored interspace connected to the Service Vacuum System (see Section 11). This requirement is necessary to achieve overall machine reliability. Lip seals which are accessible for repair in port cells are excluded from this requirement but shall have provision for remote leak identification. If a vulnerable component is accessible for maintenance and fitted behind an approved, interlocked, isolating valve then acceptance may be sought for single vacuum containment.
Demountable joints on VQC 1A shall use double seals with the interspace monitored and connected to the Service Vacuum System.
Demountable joints shall not be used for water to vacuum boundaries for any vacuum class.
Boundaries between VQC 1A and VQC 2A components that are considered to be vulnerable shall be doubly vacuum contained with a monitored interspace connected to the Service Vacuum System. This is a requirement to avoid an undetected leak of tritium into the cryostat vacuum.
VQC 2A components that are considered to be vulnerable are recommended to be doubly vacuum contained with a monitored interspace connected to the Service Vacuum System. Where it is considered that double vacuum containment increases the failure risk or failure consequences, then an alternative method to provide leak localisation and mitigation shall be proposed for acceptance.
An analysis of the probability of air ingress is required for safety and investment protection for any vacuum system which contains hydrogen and can reach a deflagration pressure above the design pressure. (For a 200 KPa design pressure the hydrogen isotope concentration limit is 1.5 mole/m3 for volumes or 0.8 mole/m3 for pipes). If the probability of air ingress is greater than 10-6 per year, then the probability shall be reduced by design. For example, measures such as double vacuum containment with a monitored interspace may be applied.
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The requirements of this Handbook for VQC 1A will generally satisfy the requirements for primary tritium confinement (also see ITER Tritium Handbook ITER_D_2LAJTW))5
The requirements of this Handbook for VQC 3A will generally satisfy the requirements for the temporary confinement of tritium in off-normal events and of levels expected to be permeated (also see ITER Tritium Handbook ITER_D_2LAJTW
).
On ITER, the secondary tritium confinement function is generally performed by buildings, ventilation and detritation systems, and hence is not part of this Handbook.
Further information on requirements for the confinement of tritium can be found in the ITER Tritium Handbook (ITER_D_2LAJTW).
10 Trapped Volumes
For VQC 1 and VQC 0X, 0X and 4A, the design of any vacuum component shall avoid trapped volumes in vacuum spaces which could result in virtual leaks.
For VQC 2B, 3B and 4B, care in the design of any vacuum component shall minimise trapped volumes in vacuum spaces which could result in virtual leaks.
Communicating passages should be made between any potential trapped volume and the pumped volume. The design of welded and brazed joints shall be such as to avoid the risk of trapped volumes.
Care should be taken to avoid large areas of surface contact which, through imperfect flatness, can provide a trap for gas and impurities. Such surfaces, if required, should be channelled.
Where relief holes are necessary, these should preferably be in the “fixed” part of the work piece, rather than relying on, for example, the use of a vented screw which may be missed on assembly.
11 Connections to the Service Vacuum System
Interspaces, e.g. between double windows, double bellows, double-sealed valves, etc., should be designed to be connected to the Service Vacuum System (SVS) with a minimum of two independent connections in every case meeting the following requirements:
Interspaces which have a total volume less than 50 L shall utilise 6 mm tube welded to 6 mm (1/4 inch) VCR male fittings.
Where the interspace volume is between 50 L and 500 L, the connections to the SVS shall utilise 12 mm tube welded to 12 mm (1/2 inch) VCR male fittings.
Interspaces with volume greater than 500 L shall be fitted with 40 mm tubes with flanges selected from those listed in Appendix 8 welded to the tubes.
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This requirement is valid for all interspaces except where the interspace is to be pumped to less than 5x10-1 Pa, in which case connections to the SVS shall be accepted by the ITER Vacuum RO.
12 Pipework (Pipe & Fittings)
12.1 General
In all applications in VQC 1A and VQC 2A and VQC 4A (process to insulation vacuum), pipe and fittings shall be seamless. Where this is not possible, specific acceptance is required to use seamed components which shall conform to the testing requirements of Section 7.1.4.
To mitigate risk of the loss of availability associated with water leaks in the cryostat, it is recommended that single contained water pipes do not pass through the cryostat.
Where practical, for components classified as VQC 2A, water pipework forming part of the cryostat vacuum boundary shall be doubly contained. Where it is not practical to doubly contain the pipework, all welded joints shall be full penetration butt welds subject to 100% Non-Destructive Testing (NDT).
Interspaces on VQC 2A water pipework shall be brought out to the port cells or pipe chase area and provision made for water detection, draining and temporary vacuum connection for vacuum leak testing the interspaces.
Where interspaces are not used as a method of water leak localization for water pipes passing through the cryostat, an alternative accepted method shall be integrated with the water pipe design.
For VQC 1A and VQC 2A, & VQC 4A (process to insulation vacuum) pipework of wall thickness less than 2.0 mm designed to contain helium, Electro-Slag Remelted (ESR) or Vacuum Arc Remelted (VAR) material shall be used for the pre-extruded material and the inclusion limits of Section 5.3 adhered to.
In the case of VQC 4 (atmosphere to insulation vacuum), there is no restriction on the use of seamed pipe provided that it conforms to the testing requirements of Section 7.1.4.
12.2 Pipework Sizes
To comply with the ITER standard vacuum flange dimensions as specified in Appendix 8, standard pipework sizes shall be used where practical. Standard pipe sizes are listed in Appendix 11.
13 Demountable Joints
Demountable vacuum joints i.e. quick release couplings, compression joints, transition couplings, flange pairs, etc. for use on ITER vacuum systems shall be accepted prior to use. Lists of standard joints are given in Appendix 8.
For VQC 1 and 2 there shall be no demountable vacuum joints within the vacuum.
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Vacuum joints for use on VQC 1, 2 and 3 systems shall use all-metal seals. In addition, vacuum joints for use on VQC 1A shall utilise a double seal arrangement, with the interspace connected to the Service Vacuum System consistent with Section 9 (Confinement and Vacuum Containment).
All demountable joints must be accessible for maintenance/testing.
In all cases the fixed sealing face of the vacuum joint shall be accessible for manned inspection and repair during periods of ITER maintenance.
Seal faces must have the requisite surface finish and cutting lay or lap direction for the seal design. Seal faces shall not be electropolished.
For VQC 4, demountable vacuum joints shall normally use all-metal seals, although the use of other types of seals is permitted subject to prior acceptance.
For all VQC, the reuse of metal seals is permitted for system testing only. However, the final mating of demountable vacuum joints shall be made using previously unused metal seals.
Where demountable vacuum joints are mated for testing purposes, the applied sealing bolt loading on the test flanges shall be consistent with the final sealing option utilised. Once the sealing flange is proven, temporary use of other sealing options can be permitted. When the item is in its operational position and a temporary seal is used this must be recorded using a non-conformance.
All demountable vacuum joints shall be subject to 100% helium leak testing to installation procedures following the guidelines specified in Appendix 12. Installation procedures shall be approved by the ITER Vacuum RO. A design guide for the manufacture of demountable joints and sealing options for use on ITER vacuum systems is given in Appendix 8.
14 Fasteners and Fixings
14.1 Tapped Holes
Blind tapped holes shall be avoided as far as possible, since in addition to being a source of virtual leaks (see Section 10), they provide a potential trap for contaminants. Where the use of blind holes is unavoidable, holes shall be tapped with flat bottoms and vented screws or bolts shall be used.
Tapped holes shall be cut using only the approved cutting fluids listed in Appendix 4. Cutting fluids not listed in Appendix 4 may be accepted in advance by the ITER Vacuum RO and submitted for inclusion in Appendix 4 using the procedure in Section 5.2. Where an insertion is used to provide a screw thread in a plain hole (e.g. Helicoil™ inserts), the material used shall be consistent with those listed in Appendix 3.
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14.2 Bolts
14.2.1 Bolts for use on the Vacuum Boundary (P < 0.15 MPa)
It shall be demonstrable that bolts for use in the formation of a vacuum boundary are of satisfactory mechanical properties to provide the relevant seal force requirements of Appendix 8. Bolts should be of rolled thread and supplied with certification in accordance with EN 1024, 3.1.
14.2.2 Prevention of Bolt Seizing
For all VQC, threaded fixings (e.g. bolts), shall be treated to prevent seizing. Approved solid (dry) lubricants, aluminium bronze inserts or coatings are preferred. Lubricants for each class are listed in Appendix 3. The use of any other lubricant is subject to prior acceptance. Bolts for use on ITER vacuum systems but not exposed to vacuum (i.e. VQC N/A), shall be lubricated to prevent seizing with a hard coating or, where appropriate, Molykote.
14.2.3 Bolt Locking
It is recommended that bolts in vacuum for use on VQC 1 and VQC 2 systems shall be locked after loading to prevent them becoming free and causing damage to other parts of the vacuum system. Bolts may, for example, be locked using resistance spot welded stainless steel tangs. Other suitable materials may be selected from those listed in Appendix 3.
14.3 Riveting
Riveting is an approved technique for the joining of components in VQC 2B and 3B. Rivets shall only be formed from the materials listed in Appendix 3.
Trapped volumes formed by riveting shall be eliminated at the design stage in accordance with Section 10 above.
14.4 Bearings and Sliding Joints
Designs for in-vacuum bearings and sliding joints for VQC 1 to 3 shall be subject to prior acceptance at the design stage. These should be eliminated by design wherever practical, for example by the use of flexure pivots. Solid (dry) lubricants or coatings are preferred, but other permitted lubricating materials are listed in Appendix 3.
In VQC 2 and 4 applications, polytetrafluoroethylene (PTFE) bearings are approved for positions where the predicted radiation fluence over the full operational life of ITER is less than 103 Gray (up to 106 Gray for accepted cross-linked PTFE) (Gamma or Neutron dose equivalents).
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15 Windows and Window Assemblies
15.1 General
Window assemblies for VQC 1 and VQC 2 shall be double, with no ’design basis’ common mode failure between the two windows, or shall be fitted behind a UHV isolation valve and have direct connection through the window to a VQC 3 vacuum system.
For windows transmitting high power (e.g. RF heating systems) the interspace pressure shall be continuously monitored and suitably interlocked with the power system.
Window assemblies accessible from outside the vacuum systems should incorporate mechanical protection against accidental impact.
For VQC 1A double window assemblies to air, the maximum diameter permitted is 160 mm.
An example of a specification for the design, qualification, manufacture and acceptance testing of window assemblies for use on ITER vacuum systems can be found in Appendix 6.
15.2 Qualification of Window Assemblies
Prior to manufacture, the design of window assemblies shall be qualified by performing type tests on pre-manufacture window assemblies. The supplier shall submit for acceptance a qualification test plan detailing the qualification tests to be performed in order to qualify the window for a particular application.
The qualification of the window assemblies for use on a vacuum boundary shall include the following tests:
Pressure testing of window assemblies.
Mechanical shock testing.
Thermal shock testing.
Helium leak testing.
15.3 Testing of Window Assemblies
Prior to the manufacture of window assemblies the supplier shall supply for acceptance a test plan and test procedures detailing the tests to be performed on window assemblies before delivery to the ITER site. After the completion of all manufacturing processes the window assemblies shall be subject to a thermal cycle test, pressure test, and helium leak test.
Acceptance testing of window assemblies which operate at elevated temperatures requires a minimum of three thermal cycles to be performed to their maximum operating temperature consistent with Section 25.5.
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16 Vacuum Valves and Valve Assemblies
For VQC 1, 2 & 3, valves shall be of all-metal construction with the exception of the valve closure seal, for which polyimide is also permitted.
For VQC 2 valves, elastomers may be used on the valve closure seal only with the prior acceptance of the ITER Vacuum RO.
For VQC 4, valves need not be all-metal except where they may be in contact with cryogenic fluids.
For VQC 1A all actuating and actuator bellows and seals shall be of double construction with the interspaces connected to the Service Vacuum System (see Section 11). Valves requiring compressed gas to maintain a seal shall be avoided where practical and any use requires prior acceptance.
Valve assemblies shall normally be installed such that the internal actuating system for the valve is on the side exposed to lower vacuum quality or to atmosphere and the seal face to the higher vacuum quality side. To facilitate this, all valve assemblies shall be permanently marked on the outside with an arrow pointing towards the seal face end of the assembly.
The valve position shall be positively identified by means of “open” and “closed” limit switches and a visual position indicator shall be provided on the valve or actuator body.
16.1 Acceptance Testing of Vacuum Valves and Valve Assemblies
Prior to shipping, valves shall be subject to an acceptance vacuum leak test. Detailed leak testing procedures shall be submitted for prior acceptance. Guidance can be found in Appendix 12.
Valve testing shall include the following helium leak tests:
Valve body (global).
Across the valve seat.
Valve actuator bellows.
Internal pressure element.
Valve double bellows interspace.
Valves for use on VQC1 systems at elevated temperature shall be baked and hot leak tested at 200 °C.
An example specification for the design, manufacture and testing of valves for use on ITER vacuum systems is given in Appendix 7.
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17 Bellows and Flexibles
17.1 General
In general, bellows and flexibles are considered to be inherently vulnerable components (see section 9) due to their method of construction and because their application is typically to facilitate movement.
The use of bellows or flexibles in water circuits inside vacuum systems with any VQC shall be avoided by design wherever possible, and shall only be only permitted with prior acceptance for VQC 1A and VQC 2A when the surrounding vacuum is behind an isolation valve. For such usage, consideration must be made at the design stage to proven reliable performance in similar applications. Double bellows are not recommended for use in water circuits in vacuum.
In all test situations and after installation, the bellows shall be protected against all abnormal load conditions. This may include the design of physical constraints.
An example of a specification for the design, qualification, manufacture and acceptance testing of bellows assemblies for use on ITER vacuum systems can be found in Appendix 9.
17.2 Bellows Protection
Bellows shall be protected against damage from falling objects. The bellows protection shall be equivalent too, or better than, that provided by a cover of schedule 20 pipe.
17.3 Design of Bellows
Circular bellows are to be designed to the EJMA or EN14917 or equivalent. The use of other design codes is subject to acceptance. Where design codes are not applicable, design shall be by analysis and shall be proven by qualification.
Care shall be taken to ensure that the operational loading parameters are fully considered. Precautions need to be taken against rupture and other failure modes where there is a pressure difference in either direction between the inner and outer surfaces of the unit.
Bellows for use on VQC 1 systems shall be of double construction (or accepted multilayer design) with a monitored interspace, unless they are accessible for maintenance and fitted behind an approved interlocked isolating valve.
Where bellows are be used on VQC 2 systems it is recommended that they be of double construction (or accepted multilayer design) with a monitored interspace.
Multiple ply bellows are not permitted for VQC 1A components unless they are accessible for maintenance and fitted behind an approved isolating valve.
For VQC 1A and VQC 2A, where regular and significant movement is to be taken up by a double bellows, the norm shall be to design the double arrangement such that
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one bellows is in compression whilst the other is in expansion so as to reduce the chances of a common mode failure.
The interspace between the two bellows of an assembly shall normally be filled with a suitable tracer gas and the pressure in the interspace shall be continuously monitored. The interspace shall be connected to the Service Vacuum System (see Section 11).
Normally accessible bellows assemblies and bellows assemblies which become accessible during machine maintenance shall be supplied with mechanical protection (such as the use of metal braiding or removable cover plates) to prevent accidental damage and ingress of matter to the bellows edge-welds or convolutions.
Non-circular bellows of non edge-welded construction are to be welded and then formed, rather than formed in parts then joined. This does not apply to the post- forming welding of bellows sections to collars. Cross welds are to be avoided where possible.
Hydrostatic, rolling or elastomeric formation is approved for all vacuum classes.
Bellows which are of edge-welded construction shall be acceptable provided that they comply with Section 7.1.
Cleaning of bellows shall be in accordance with the requirements of Section 24.
17.4 Qualification of Bellows
Bellows designed by analysis shall be subject to a qualification procedure prior to manufacture. The design of bellows shall be qualified by performing type tests on pre-manufacture bellows assemblies. The supplier shall submit for acceptance a qualification test plan detailing the qualification tests to be performed.
The qualification of the bellows assemblies shall include the following:
Pressure test.
Fatigue life test.
Mechanical shock testing.
Helium leak test.
17.5 Testing & Inspection of Bellows
Prior to the manufacture of bellows assemblies the supplier shall supply for acceptance a test plan and test procedure detailing the tests to be performed on bellows assemblies before delivery to the ITER site. After the completion of all manufacturing processes the bellows assemblies shall undergo a vacuum baking cycle to the operating temperature and a helium leak test. The supplier shall perform a survey of the bellows convolutions to confirm compliance with the bellows technical specification. The survey results shall be supplied to ITER and any non-conformance may lead to rejection of the bellows.
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17.6 Bellows Protection
Bellows shall be protected against damage from falling objects. The bellows protection shall be equivalent too, or better than, that provided by a cover of schedule 20 pipe.
18 Feedthroughs
18.1 General
Where for VQC 1A and 2A a feedthrough penetrating the air boundary is considered vulnerable (see Section 9) a doubly vacuum contained electrical feedthrough with interspace connected to the Service Vacuum System shall be used. Where necessary, alternative arrangements shown to ensure sufficient integrity of the feedthrough may be accepted.
The sheaths of mineral insulated cable shall not pass directly through a VQC 1A and 2A feedthrough, but shall be discontinuous and sealed within feedthrough interspaces.
Where applied or induced voltages may be present on such feedthroughs, then protection against arcing or Xxxxxxx breakdown shall be provided.
18.2 Xxxxxxx Breakdown
Where there is a risk that Xxxxxxx breakdown may occur in an interspace of a feedthrough, it must either be continually pumped or be backfilled with a gas of accepted composition to a pressure appropriate to mitigate the risk of Xxxxxxx breakdown.
In both cases, the interspace pressure must be continuously monitored and interlocked with the system controls to prevent power being applied in the event of single barrier failure.
19 Electrical Breaks
Where for VQC 1A and 2A, an electrical break (i.e. providing electrical isolation between systems) is considered vulnerable (see Section 9), a doubly vacuum contained electrical break with interspace connected to the Service Vacuum System shall be used, unless it is accessible for maintenance and fitted behind an approved interlocked isolating valve.
If an electrical break is at risk of Xxxxxxx breakdown in an external or internal rough vacuum, suitable precautions shall be taken to ensure that the risk of breakdown is eliminated.
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20 Cables for use in Vacuum
20.1 General
Up to 80 km of cables are anticipated in the ITER vacuum vessel. Many kilometres are also required in the cryostat. Special care shall be taken in the choice and quality control of such cables. In-vacuum cabling shall comply with all the general vacuum requirements for its VQC.
In particular:
Materials shall be selected to be in accordance with Appendix 3.
Outgassing shall be consistent with Table 20-1.
VQC | Outgassing temperature (C) | Maximum steady state outgassing rate per unit length+ [ Pa.m3.s-1.m-1 ] | Testing guidelines | |
Hydrogen Isotopes | Impurities | |||
1 | 100 | 1 x 10-9 | 1 x 10-11 | Appendix 17 |
2‡ | 20 | 1 x 10-9 | Appendix 17 | |
3 | 20 | 1 x 10-10 | Appendix 17 | |
4 | 20 | 1 x 10-9 | Published data and conformity to clean work plan. | |
For VQC 2, 3 & 4 the total outgassing rate excludes water and hydrogen. +Valid for cables up to Ø 5mm outer sleeve. Pro-rata values can be applied for larger cables. ‡ The requirements for high voltage cables in the cryostat are still being studied and hence requirements will be specified in future. | ||||
Table 20-1 – In vacuum cabling outgassing rates
Approved cable types pertaining to each VQC are listed in Appendix 10. The use of other cables is subject to prior acceptance.
All mineral insulated cables shall be sealed at both ends, and the void volume shall be less than 5%. The cable shall be proven to be leak tight, consistent with the levels for VQC 1 and VQC 2 given in Table 25-1, by helium bombing (see Appendix 12).
Specification for the manufacture and qualification of in-vacuum cables shall be accepted by the ITER Vacuum RO prior to production. A guide for the supply of in- vacuum cables can be found in Appendix 10.
20.2 Connectors and Terminations
In-vacuum connectors shall comply with the general vacuum requirements for the relevant VQC.
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21 Interconnection between VQC 1 systems
Any system which can be directly connected to the main ITER tokamak vacuum by opening a valve shall have, as a minimum, full range pressure monitoring. Residual gas analysis capability is also required for systems with volume > 1 m3.
The control of the isolating valve shall be via the ITER vacuum control system. Signals for all vacuum monitoring shall be made available to the ITER vacuum control system.
Any necessary inhibits on valve movements required to protect the sub-system, shall be made available to the ITER vacuum control system.
22 Proprietary Components
In the context of this Handbook, proprietary components are standard products which are listed in supplier’s catalogues and are sufficiently well documented for their specification to be checked for fitness for purpose.
Proprietary components fully meeting the ITER specification of the item and the requirements of each VQC are permissible for use.
For VQC 1, 2 and 3, proprietary components meeting the requirements of this Handbook shall be supplied with an individual certificate of conformity, stating that the item conforms to the specification provided by the supplier.
For VQC 4, proprietary components shall be supplied with a certificate of conformity as above, but this may be in the form of generic or type conformance certificates to the catalogue specification.
A list of standard proprietary components which are known to conform to the requirements of this Handbook and so can be recommended for use on ITER vacuum systems is to be found in the Appendix 20.
Other proprietary components will be added to Appendix 20 when they are shown to meet the requirements of this Vacuum Handbook. Proposed additions should be submitted to the ITER Vacuum RO for consideration using the form in Appendix 20.
23 Vacuum Instrumentation
The requirements stated below shall be applicable to any instrumentation that directly interfaces with ITER vacuum spaces, and is applicable to all Vacuum Classifications.
In all cases instrumentation shall be compatible with ITER operational requirements and the ITER physical environment. This shall include among other matters:
Being compatible with the relevant VQC.
Being compatible with operation in a hydrogen environment.
Exhibiting an outgassing rate consistent with those given in Section 5.4.
Being leak tight consistent with Table 25-1.
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Being resistant to neutron and gamma radiation at the instrument location. The radiation map to define these levels is defined in the ITER Room Book. See also Appendix 3.
Being able to survive any pressure within the full operational and off- normal range (from 10-9 Pa to 0.15 MPa for VQC 1 and 2).
Instrumentation shall be servicing free to the maximum extent.
Generally on VQC 4, wherever the operational environment permits, active sensors may be used.
VQC 1 and 2 Instrumentation for use in the control of vacuum shall be fitted behind a UHV isolation valve or have agreed redundancy, and shall be accessible for maintenance.
24 Cleaning and Handling
24.1 Cleaning
Cleanliness is required during the whole manufacturing process and the preservation of cleanliness is good practice for any component to achieve the necessary vacuum standards and to minimise the time required to recover from any contamination incident. All components shall be subjected to a rigorous cleaning procedure, consistent with the Vacuum Classification of that particular component. A guide to cleaning and handling of components for use on ITER vacuum systems can be found in Appendix 13.
A detailed Clean Work Plan shall be submitted for prior acceptance to the ITER Vacuum RO before any cleaning operations are undertaken at the supplier’s site. The plan shall specify how cleanliness will be maintained throughout the manufacturing process. It shall state when specific cleaning procedures will be applied and all of the controls which will be in place to maintain cleanliness, including handling.
Parts and sub-components shall be degreased using solvents or alkaline detergents, rinsed with demineralised water, and dried in hot gas or an oven to accepted procedures. The use of halogenated solvents is forbidden at any stage.
Lists of accepted cleaning fluids can be found in Appendix 4.
VQC 2 components incorporating cryostat vacuum-facing resins give a risk from volatile surface compounds which, if sticking to the reflective coatings of the tokamak thermal shields, could degrade the emissivity of the shields. As no acceptable procedure is foreseen for cleaning volatiles from a resin surface, care shall be taken not to introduce them to the surface.
24.2 Design Rules for Cleanability
At the design stage for a vacuum component, careful consideration shall be given to how the item is to be cleaned. In particular, crevices, blind holes, cracks, trapped volumes, etc., shall be avoided as these will act as dirt and solvent traps and it can
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be very difficult to remove contaminants from such areas. Fortunately, good vacuum practice regarding trapped volumes will also usually result in a component which is cleanable.
24.3 Mechanical Processes on Vacuum Surfaces
Abrasive techniques to clean or to attempt to improve the appearance of the surfaces of vacuum components must be kept to an absolute minimum and are preferably avoided. For all VQC the use of files, harsh abrasives, sand, shot or dry bead blasting, polishing pastes and the like is prohibited under normal circumstances and may not be used without prior agreement. However, for VQC 2, shot or dry bead blasting is permitted. Stainless steel wire brushes, cleaned to the standards of this handbook, may be used only when it is considered essential to do so.
If grinding is essential on VQC 1 systems, the grinding wheel shall be free of organic components and shall have been manufactured in an oil-free, clean environment. The material and manufacturing process of the grinding wheel shall be accepted by the ITER Vacuum RO before use.
24.4 Pickling/passivation of Steels and Copper
If an assembly is pickled, then final machining of vacuum sealing surfaces must be left until after the pickling/passivation process.
Pickling should always be followed by passivation. This is best carried out chemically, although native oxide layers can reform on exposure to atmosphere. Pickling and passivation must always be followed immediately by an appropriate cleaning process relevant to the VQC of the component.
It should be noted that thermal outgassing from surfaces which have been pickled/passivated may well be greater than that from a native metal surface and baking may be required to reduce outgassing rates to acceptable levels prior to installation.
A guide to the pickling/passivation of steels and copper can be found in Appendix 14.
24.5 Post-Cleaning Handling of Vacuum Equipment
After final cleaning, the handling of vacuum equipment shall be strictly controlled to preserve cleanliness. General area cleanliness requirements pertaining to Vacuum Classifications are summarised in Table 24-1. The continuing suitability of any given area used for handling vacuum equipment should be checked on a regular basis by monitoring the airborne particulate count, which should not exceed 5 x 106 particles of size > 0.5 µm per m3 for VQC 1.
VQC | Cleanliness requirements | Personnel | Area Cleanliness | Monitoring |
1 | Segregated clean area. Limited Access to authorised personnel. | Trained personnel. Protective hair nets. Clean powder free | Daily Cleaning of area including floors | Daily air quality checks. Results stored |
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Authorised equipment operated to approved procedures. Management of equipment (e.g. no vacuum pumps or other machinery exhausting into clean area). | latex or nitrile outer gloves. Clean white overalls. Overshoes. Clean job specific footwear. | and surfaces. Sticky mats at area entry. | in component document package. Weekly cleanliness test of area with results stored in component document package. | |
2 | Authorised equipment operated to approved procedures. Management of equipment (e.g. no vacuum pumps or other machinery exhausting into clean area). | Trained personnel. Clean outer protective gloves for the handling of clean equipment. | Daily Cleaning of work area including floors and surfaces. | |
3&4 | House Keeping. | Trained personnel. Clean powder free latex or nitrile outer gloves for the handling of clean equipment. | Daily cleaning of area. |
Table 24-1 – Environmental cleanliness pertaining to VQC
Additional cleanliness requirements shall be defined in the component installation procedures.
Handling cleanliness guidelines for each VQC are detailed in Appendix 2.
24.6 Cleanliness during the Assembly of Vacuum Equipment
The mandatory requirements relating to cleanliness during assembly of vacuum equipment are detailed in Attachment 2 (ITER_D_MBXPP3).
25 Leak Testing
25.1 General
Generally, leak tests shall be performed:-
During manufacturing to confirm the soundness of joining processes and sub-components and to reduce the risk of Incorporating leaks in a system that are subsequently difficult to locate or to repair.
As an acceptance test at the supplier’s site to show that completed assemblies meet the acceptance leak criteria.
When a component arrives at the ITER site, to confirm that there has been no damage during packaging and transport. This test, which is under the
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control and at the discretion of ITER, will be designed to be as simple and fast as possible.
During installation, under the control of ITER, when testing is implemented to reduce the risk of newly made joint leaks only being detected at the completion of the total installation.
On pumping down of the completed installation as part of the final commissioning.
Leak testing shall be carried out by suitably trained and experienced personnel. Acceptance test methods require prior acceptance. Guidance can be found in Appendix 12.
Leak testing shall be performed after pressure testing (if applicable). Before leak testing, components shall be cleaned, dried or baked in accordance with Section 27 of this Handbook.
Unless otherwise specified in the relevant contract or Procurement Arrangement the supply of any vacuum component shall include all testing jigs, flange closure plates (welded or otherwise) and fittings to allow helium leak testing at the ITER site. These may be the same items that were used for tests prior to delivery. Methodologies for the subsequent removal of such features shall also be supplied.
The requirement to leak test proprietary components delivered to the ITER site with a supplier’s Certificate of Compliance may be waived by ITER at the discretion of the ITER Vacuum RO.
25.2 Maximum Acceptance Leak Rates
Maximum acceptance leak rates for several of the ITER vacuum systems are given in Table 25-1.
Any concession to permit leak rates greater than those specified in Table 25-1 can only be by prior acceptance.
25.3 Design Considerations for Leak Testing
All components and systems forming a vacuum boundary shall be designed so as to facilitate leak testing using tracer gas leak detection methods during the building of ITER.
Components shall also be designed to facilitate the timely localization of leaks occurring during ITER operations. Different techniques can be considered which may include the provision of small-bore tubing to allow the introduction of helium to the vicinity of potential leaks.
The design of vacuum systems shall be such that leak tightness can to be proven across all vacuum boundaries.
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25.4 Scheduling of Leak Tests
Prior to manufacture the supplier shall have an accepted leak test plan detailing the timing and type of tests to be performed during manufacture. The plan shall include which tests are to be witnessed by the ITER or Domestic Agency Vacuum Specialist.
The ITER Vacuum RO shall be informed a minimum of two weeks in advance of a test requiring witnessing by ITER.
Scheduling of leak testing shall be in compliance with the ITER Leak Testing Policy (ITER_D_L5P5P2).
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System/ Component | 3 Maximum Leak Rate (Pa.m /s air equivalent†) |
VQC 1 * | 1 x 10-10 |
VQC 2* | 1 x 10-9 |
VQC 3* | 1 x 10-9 |
VQC 4* (Atmosphere to insulation Vacuum) | 1 x 10-7 |
VQC 4* (Process line to insulation Vacuum) | 1 x 10-10 |
Tokamak primary vacuum (including all in- vessel components and attachments) | 2x10-7 |
Vacuum vessel (Including ports but excluding attachments) (Total allocation of leakage into main chamber vacuum) | 1x10-7 |
Individual vessel sector (Total allocation to a sector main chamber vacuum assuming enclosed) | 1x10-8 |
Individual field joints (covers port and sector field joints) | 1 x 10-8 |
Individual port plugs (complete) | 5 x 10-10 |
Each NB/DNB injector enclosure | 1x10-8 |
Cryostat vessel (excluding contents) | 5 x10-5 |
Completed Cryostat (including all in-cryostat components and attachments) ‡ | 1x10-4 |
Central solenoid assembly‡ | 1x10-7 |
Individual PF-coil assembly‡ | 1x10-7 |
Individual TF-coil assembly‡ | 1x10-7 |
Complete thermal shield assembly‡ | 1x10-5 |
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*Individual system or component not otherwise mentioned.
† Helium equivalent Leak Rate (LR) = Air equivalent x 2.69 at the same temperature.
LRHelium =
LRAir
M Air
M Helium
= 2.69 (M = atomic mass)
‡ Values quoted refer to systems under normal operational pressures and temperatures. Conversion to room temperature and atmospheric pressure tests can be supplied on request.
Table 25-1 Maximum acceptance leak rates for various vacuum systems
Generally it is advised that component parts should be tested before assembly, but final assemblies must be tested before shipping to ITER. For VQC2A in the case of a construction with many joints which become embedded and inaccessible in an assembly, then individual leak tests may be accepted as an acceptance test to replace final assembly acceptance leak testing prior to shipping.
Leak testing may be performed at the ITER site following transportation of vacuum components prior to it being accepted by ITER for installation.
Installation leak testing will be carried out to accepted procedures as part of the ITER assembly. All ITER vacuum systems will undergo final leak testing as part of the integrated commissioning of the ITER machine.
25.5 Methods and Procedures
The leak test procedure for acceptance tests shall be accepted in advance by the ITER vacuum RO. The procedure shall describe how the leak test will be performed, and include configuration diagrams and full details of the equipment to be used. Guidance on acceptable methods of carrying out leak testing is given in Appendix 12.
The acceptance leak test method shall ensure leak tightness is proven across all vacuum boundaries.
Test conditions (pressure, temperature) for the acceptance leak test shall be as close as practical to the design conditions. Testing shall be carried out with the component at ambient temperature and as close as practical to both its maximum and minimum design temperatures. The direction of the pressure differential shall normally be in the same direction as during operation exhibited by the components. Exceptions will be considered for the larger ITER components for tests prior to the final commissioning tests.
Where acceptance leak tests are not to be performed on cryogenic systems at cryogenic temperatures, a method of cold leak testing any welded connections shall be accepted in advance.
For an acceptance helium leak test, the helium concentration around the test piece shall be at a minimum of 50% for the duration of the test. The helium concentration shall be measured and recorded. The helium shall be maintained for a period calculated to be sufficient to identify leaks at the acceptance level.
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Acceptance leak tests on VQC 1A or VQC 3A components which include joints of dissimilar materials2 shall be subject to a minimum of three thermal cycles from ambient to the maximum possible operating temperature prior to leak testing. The time taken for any component to reach the specified bake temperature from ambient shall be less than 100 hours.
A representative of the ITER Organisation may inspect the supplier’s leak testing equipment and witness a proof of procedure prior to the acceptance leak test.
Acceptance leak tests shall be witnessed or, where there are many tests agreed to form the acceptance leak testing, a representative sample of the test shall be witnessed. The ITER Vacuum RO shall nominate or approve the Vacuum Specialist to witness the acceptance leak tests. ITER may require that other key (ITER_D_L5P5P2) leak tests to be implemented as part of a manufacturing process be witnessed. Those tests to be witnessed by ITER, including the acceptance tests, shall be defined in the Manufacturing Inspection Plan (MIP).
25.6 Acceptance Leak Testing at the Supplier’s Premises
The supplier is responsible for the supply of all testing equipment, vacuum components, all testing jigs, flange closure plates (welded or otherwise) and fittings to allow an acceptance helium leak test to be carried out.
No repair or re-work of the components (with the exception of simple tightening of flange joints or replacement of gaskets) shall be undertaken without prior agreement. Any repair or rework will require the leak test procedure to be repeated and may include a repeat leak test at the operating temperature.
No vacuum component which fails to meet the specified acceptance leak rate at the supplier’s site shall be accepted for delivery to the ITER site without prior acceptance.
25.7 Acceptance Criteria for Leak Testing
On successful completion of the specified leak tests, the item under test may be accepted provided the following conditions have been met:
The leak detector in the test configuration has been calibrated and its calibration value is within the limits of ±5% of the nominal value of the standard leak rate value, taking into account the ambient temperature and the age of the standard leak.
The background level of the leak test was below the acceptance leak rate without electronic correction prior to the test.
The reading from the leak detector has not increased in value above the measured background by more than the specified leak rate as defined for
2 Metallic joints shall be considered to be of dissimilar materials if the difference in linear thermal expansion coefficients over the operating temperature range of the materials comprising the joint is greater than or equal to 20%. Joints between non-metallic materials shall be considered as dissimilar.
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the item under test throughout the entire duration of the leak test procedure.
The test has been performed to the agreed procedure and, where specified in the Quality Plan, has been witnessed by the ITER Vacuum Specialist.
25.8 Acceptance Leak Testing at the ITER site
Normally, vacuum components shall be subject to a leak test at the ITER site following transportation. The purpose of such a test is to reduce the risk of installing a leaking component and is of particular importance for components which would have a high impact to replace or repair. This test will normally be performed by ITER but a supplier may witness this test. This test may be a more limited test than that performed at the supplier’s site and may be performed at ambient temperature at the discretion of the ITER Vacuum RO.
25.9 Reporting of Leak Tests
Full records of the tests carried out shall be compiled in order to maintain traceability of the leak test history of a particular item. The records shall become part of the final document package for the component concerned. Records shall include the following:
Data records of the output of the leak detector for all the global tests specified including the standard leak calibration and response time determination. These data records shall include the date and time of all the tests as well as any other data necessary to allow a full analysis of the results, such as the start and finish of helium gas application to the item under test.
A record of the helium concentration during the leak test.
A record of the system total pressure and temperature during a temperature cycle as it may pinpoint the time when a leak opened up and be instrumental in the subsequent diagnosis of the leak.
The make and model of the helium mass spectrometer leak detector used in the test.
The nominal value of all standard leaks used, their date of calibration, ageing and temperature characteristics, and the ambient temperature(s) experienced during the tests.
Results of all tests showing whether it was a pass or fail and if a failure, the measured leak rate and the location of the leak plus the steps taken for repair or elimination.
The magnitude and location (if applicable) of all leaks identified during testing. This includes leaks of size lower than the acceptance criteria for which no remedial action may have been taken.
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x X full record of any residual gas scans taken with appropriate time markers to identify the scans to the position in the component leak test cycle.
An example template for the reporting of leak tests is provided as part of Appendix 12
26 Baking
26.1 General
Vacuum components for the various classifications may require to be baked to ensure satisfactory vacuum performance. Raw materials may also require baking before being used in manufacture if a higher temperature is required to achieve satisfactory vacuum properties than will be possible later.
Baking can be included in the component leak testing procedure (see Section 25) and/or the component cleaning procedure (see Section 24). A bake temperature and duration will normally be specified in the specification documents and/or drawings for individual components or assemblies. If this is not the case, then the standard temperatures listed in Table 26-1 shall be used. Normally, the time taken for any component to reach the specified bake temperature from ambient shall be less than 100 hours and the component shall normally be held at the baking temperature for a minimum of 24 hours.
Where the supplier is unable to carry out a bake procedure, either to the standard conditions in Table 26-1 or as otherwise specified, then any variation shall be agreed with ITER before proceeding.
For all vacuum components that require baking, a detailed procedure describing the baking process shall be submitted for acceptance before any baking is started. The acceptable leak rate and vacuum conditions of any baking chamber shall be agreed as part of this procedure.
Vacuum ovens containing heating filaments within the vacuum are not permitted for VQC 1 baking operations without full qualification of the baking process.
Post bake handling of vacuum components shall be in accordance with Section 24.5.
A guide to the vacuum baking of components, including baking temperatures, is to be found in Appendix 15.
26.2 VQC 1 Components (non plasma-facing)
After manufacture, VQC 1 non plasma-facing components which operate at elevated temperature shall be baked using the guidance of Appendix 15. Baking shall be for a minimum of 24 hours at the maximum operating temperature. The bake cycle may be performed as part of the cleaning process or, if applicable, the hot leak test. There is no vacuum requirement to bake at temperatures in excess of the design temperature.
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26.3 VQC 1 Components (plasma-facing)
To ensure vacuum cleanliness and to reduce impurity outgassing, components which are plasma facing or operate within 0.25 m of plasma shall be conditioned after manufacture by vacuum baking following the guidance of the ITER Vacuum Handbook Appendix 15. For VQC 1 component materials in proximity to the plasma, the normal vacuum baking temperature is given in Table 26-1. Where the temperature is too high for a composite assembly, the component part requiring higher temperature baking shall be baked at that temperature prior to assembly and then the complete assembly baked at the lowest listed temperature of the component parts. Temperature requirements for baking materials not listed shall be agreed in advance of baking operations.
For any individual component, the point in the manufacturing schedule or testing procedure at which such bake or bakes is carried out and the maximum temperature used shall be agreed with the ITER Vacuum RO. Post baking handling shall be minimised to preserve cleanliness and shall be in accordance with Section 24.
Component Material | Baking temperature (C)1 |
Beryllium | 3502 |
Stainless Steel (all grades) | 250 |
Carbon Composites | 450 or 20003 |
Precipitation-hardened copper alloys | 250 |
Tungsten | 350 |
1 Maximum temperature for baking complete systems may be limited by the system components 2 A 250 C baking cycle for a substantially increased duration at may be permitted on approval. 3 Section 26.7 and Appendix 16 | |
Table 26-1 Baking temperature VQC 1 materials in proximity to the plasma
26.4 VQC 2 Components
There is normally no vacuum requirement to bake VQC 2 components, but baking may be used as part of the cleaning and surface conditioning process to achieve the outgassing requirements of Table 5-1.
26.5 VQC 3 Components
There is normally no vacuum requirement to bake VQC 3 components, but baking may be used as part of the cleaning and surface conditioning process to achieve the outgassing requirements of Table 5-1.
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26.6 VQC 4 Components
There is no vacuum requirement to bake VQC 4 components.
26.7 Vacuum Conditioning of Carbon Composites
In order to remove impurities from graphite or carbon fibre composite components (CFC), it is necessary to bake components in a suitable furnace. Due to the high temperature requirements of CFC, subcomponents shall be baked prior to system assembly.
Conditioning of CFC is dependent on the manufacturing processes involved; hence baking procedures must be qualified and accepted prior to manufacture.
After baking the total outgassing rate for Carbon Fibre Composites shall be < 1 x 10-6 Pa.m3.s-1.m-3 at 200 C (excluding the partial outgassing rates for H2, CO and CO2)
The supplier shall perform a degassing cycle of components after machining to a procedure approved by the ITER Vacuum RO in accordance with Section 26.
Guidance for the conditioning of CFC can be found in Appendix 16.
26.8 Documentation to be Supplied for Vacuum Baking
For each vacuum item, the following records shall be supplied:
Record of the pre-baking conditioning cycle for the vacuum baking chamber.
The initial leak rate of the vacuum baking chamber.
The final leak rate of the vacuum baking chamber.
A record of the temperature distribution for the item and the pressure within the vacuum item against time for the full duration of the bakeout process.
A full record of any residual gas scans taken with appropriate time markers to identify the scans to the position in the component bakeout cycle.
Full documentation regarding any leaks or any other problems which occurred during the baking and any remedial action taken.
27 Draining and Drying
27.1 Design Considerations for Draining and Drying
In order to perform effective vacuum leak testing systems under test must be dry.
VQC 1 in-vessel systems which contain water shall be designed in such away as to facilitate draining and drying. Systems shall be designed to be drained and dried so that after drying for <100 hours purge gas passing through the component has a water content <4000 ppm at ambient temperature and pressure.
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Consideration shall be given to the position of inlet and outlet water feeds to minimise the volume of trapped water which cannot be removed without drying.
27.2 Components Delivered to ITER
Vacuum components delivered to the ITER site shall be dry internally and externally. Any internal volumes wetted during acceptance testing shall be drained completely and dried by purging with dry air until the purge gas has a water content of <4000 ppm (alternatively the system may be dried by baking using the guidance of Appendix 15 and backfilled with dry air). The volumes will then be left at atmospheric pressure of dry air for a minimum period of 24 hours at ambient temperature. If after that time, the water content of the enclosed gas has risen to >4000 ppm, the drying process shall be repeated until this condition is met.
28 Marking of Vacuum Equipment
Surfaces which are to be exposed to vacuum shall only be marked or identified if necessary and shall be marked by scribing with a clean sharp point, laser scribing or electromagnetic dot xxxx method. Seal faces shall not be marked in any way. For VQC1, chemical etching shall not be used unless accepted by the ITER Vacuum RO.
Only approved (appendix 4) dyes, marker pens, paints, etc. shall be used on surfaces which will be exposed to vacuum.
29 Packaging and Handling of Vacuum Equipment
Components shall be packed with adequate protection from thermal or mechanical stresses which may adversely affect the operation of the component. All packing shall be sealed and marked externally with the component VQC. Handling instructions shall also be clearly marked on the outside of the packaging. Chemical or radiological hazards, etc., shall be identified on the packaging. All such marking shall be in English and French.
All vacuum components shall be shipped dry internally and externally, irrespective of final acceptance testing at the supplier’s site.
Aluminium foil is recommended for sealing pipe openings, and protective caps shall be fitted to flanges before packaging and sealing. Where it is not practical to enclose the components, e.g. due to size, all apertures must be sealed to prevent the ingress of contaminants during transit. Sealing surfaces shall be protected to prevent damage by scratching, impact, etc.
The use of adhesive tape for the protection and packaging of vacuum components shall be restricted to prevent the risk of contamination from the tape. In particular, tape used on austenitic stainless steel shall meet leachable chloride and fluoride limits of 15 ppm and 10 ppm, respectively. Where used, tape shall be fully removable leaving no residue, using isopropyl alcohol or acetone as the solvent to remove all traces of the adhesive.
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To prevent damage and possible contamination during transit, the packaging of components shall be done as soon as possible after acceptance testing and final cleaning at the supplier’s premises. Cleaning and packaging operations may be witnessed by ITER.
Vacuum components shall be handled as little as possible after final cleaning. All subsequent operations shall be carried out in clean conditions consistent with Section 24.5.
In particular persons handling VQC 1 components shall wear clean powder-free latex or nitrile gloves (over cotton or linen gloves if desired) and, as a minimum, be dressed in clean white overalls. In the cases where the component is large (e.g. a vessel sector) and internal access is required, hair nets and clean overshoes over footwear specifically provided for use in the vacuum component shall be worn.
Volumes which have been pumped for leak testing shall be backfilled with dry nitrogen or air (<4000 ppm H2O) at a positive pressure of 0.12 MPa and valved off. Where the equipment allows manned access, air shall always be used. Where this is not practical, alternative conditions shall be accepted by the vacuum RO.
Cryogenic volumes which have been previously filled with helium for testing shall also follow the above or may be backfilled with dry helium (<4000 ppm H2O) at a positive pressure of 0.12 MPa and valved off.
Where practical, vacuum components shall be entirely enclosed in heat sealed polyethylene for shipping. The polyethylene enclosure shall be purged and backfilled with dry air (<4000 ppm H2O). Where this is not practical, alternative conditions shall be accepted by the vacuum RO.
30 Incoming Inspection at ITER of Vacuum Equipment
Before acceptance by ITER all components delivered to the ITER site will be subject to incoming inspection.
The following inspections will normally be carried out on vacuum equipment delivered to ITER:
Checking of backfilled volumes (see Section 29).
Seal face inspection.
Checking the integrity of packing and status of accelerometers (if fitted).
Cleanliness check.
Leak test.
On completion of the incoming inspection any non-conformance with, or deviation from, the vacuum specification or this Handbook shall be raised in accordance with Section 4.
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31 Long Term Storage of Vacuum Equipment
In many cases vacuum components will be delivered to the ITER site in advance of installation to the ITER vacuum system. Vacuum components shall be stored in such a state as not to degrade the vacuum performance.
In the case of VQC 1 components, after incoming inspection and acceptance, the components, where practical, shall be entirely enclosed in heat sealed polyethylene. The polyethylene enclosure shall be purged and backfilled with dry air (<4000 ppm water). Volumes which have been pumped for leak testing shall be backfilled with dry nitrogen (<4000 ppm water) at a positive pressure of 0.12 MPa and valved off. The component shall then be re-packed into its transportation case and stored at a suitable location.
After incoming inspection and acceptance VQC 2, 3 and 4 components shall be stored in clean, dry packing cases in a suitable location.
32 QA and Documentation
All vacuum components supplied to ITER shall be subject to the ITER Quality Assurance System detailed in the ITER Procurement Quality documentation (IDM Ref; ITER_D_22MFG4).
Specific guidance on satisfying the vacuum requirement of such a system is outlined in Appendix 19.
33 Acknowledgements
The ITER Vacuum Group acknowledges the following in the preparation of the ITER Vacuum Handbook:
UKAEA and JET, Culham Science Centre, Oxfordshire, UK Accelerator Science and Technology Centre (ASTeC), Daresbury, UK Dr. X X Xxxx, Dr. X Xxxxx and Dr. A Kaye
In addition the efforts of many in extensively reviewing the Handbook are acknowledged.
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34 List of Attachments
1. Inspection and Qualification of Welded Vacuum Joints
2. Cleanliness Requirements Relating to the Assembly of Vacuum Equipment (ITER_D_MBXPP3)
35 List of Appendices
1. Base Pressures and Expected Pumping Speeds (ITER_D_2ELEJT).
2. Environmental Cleanliness Requirements pertaining to Vacuum Classification (ITER_D_2EL9Y6)
3. Accepted Materials (ITER_D_27Y4QC)
4. Accepted Fluids (ITER_D_2ELN8N)
5. Acceptance Checklist (ITER_D_2N4NDK)
6. Guide to the Supply of Windows (ITER_D_2DXZZ3)
7. Guide to the Supply of Valves (ITER_D_2EPFG4)
8. Supply and Manufacture of Vacuum Flanges (ITER_D_2DJYQA)
9. Guide to the Supply of Bellows (ITER_D_2E5LJA)
10. Supply and Manufacture of Cables for use in Vacuum (ITER_D_2ETNLM)
11. Standard Pipe Sizes (ITER_D_2E5PJK)
12. Guide to Leak Testing (ITER_D_2EYZ5F)
13. Guide to Cleaning and Cleanliness (ITER_D_2ELUQH)
14. Guide to Passivation and Pickling (ITER_D_2F547S)
15. Guide for Vacuum Baking (ITER_D_2DU65F)
16. Guide for the Conditioning of Graphite and Carbon Composites (ITER_D_27YH3U)
17. Guide to Outgassing Rates and their Measurement (ITER_D_2EXDST)
18. Vacuum Component Reliability Data (ITER_D_2F2PYS)
19. Guide Documentation and QA (ITER_D_2DMNNR)
20. Standard Components (ITER_D_2F9QWX)
21. Glossary of Vacuum Terms Relevant to ITER (ITER_D_2F94QX)
VERSION CREATED ON / VERSION / STATUS
05 Jun 2020 / 1.5 / Approved
IDM UID
2FMM4B
EXTERNAL REFERENCE / VERSION
Baseline Report
ITER Vacuum Handbook Attachment 1 - Welding
This Attachment 1, to the ITER Vacuum Handbook, relates to welding of vacuum boundaries and outlines the procedures for documentation, qualification, approval and testing.
This Attachment is based on the international standards ISO 9606, ISO 15614 and ISO 15609, additional requirements are specified to achieve the high integrity and reliability of the vacuum systems to ensure the required ITER machine reliability – Additional requirements are identified in this document.
The requirements are designed to complement codes which may be used. Where requirements differ in general the more stringent standard should be applied or advice sort from ITER.
Approval Process | |||
Name | Action | Affiliation | |
Author | Xxxxxx X. | 05 Jun 2020:signed | IO/DG/CNST/MCD/TCD/VDI |
Co-Authors | Worth L. | 05 Jun 2020:signed | IO/DG/CNST/MCD/TCD/VDI |
Reviewers | Xxxxxx X. Yu X. | 09 Jun 2020:recommended 11 Jun 2020:recommended | IO/DG/CNST/MCD/TCD/VDI IO/DG/SQD/QMD |
Approver | Becoulet A. | 11 Jun 2020:approved | IO/DG/ENGN |
Document Security: Internal Use RO: Xxxxxxxxx Xxxxxxx | |||
Read Access | GG: MAC Members and Experts, GG: STAC Members & Experts, AD: ITER, AD: External Collaborators, AD: IO_Director-General, AD: External Management Advisory Board, AD: EUROfusion-DEMO, AD: Auditors, AD: ITER Management Assessor, project administrator, RO, LG: VDI team member temp, LG: Section Scheduling... | ||
PDF generated on 11 Jun 2020
DISCLAIMER : UNCONTROLLED WHEN PRINTED – PLEASE CHECK THE STATUS OF THE DOCUMENT IN IDM
Change Log | |||
ITER Vacuum Handbook Attachment 1 - Welding (2FMM4B) | |||
Version | Latest Status | Issue Date | Description of Change |
v1.0 | Signed | 17 Dec 2008 | |
v1.1 | Signed | 26 Jan 2009 | |
v1.2 | Approved | 10 Apr 2009 | |
v1.3 | Signed | 19 May 2020 | Updated list of codes and standards with current applicable versions and removal of obsolete ones. Welding clarifications (MUXMPR, MUZQFU and MUX8HR) and reflected in the new version. Document update required as a result of PCR-1141. |
v1.4 | In Work | 05 Jun 2020 | Minor formatting issues corrected |
v1.5 | Approved | 05 Jun 2020 | Formatting errors corrected |
PDF generated on 11 Jun 2020
DISCLAIMER : UNCONTROLLED WHEN PRINTED – PLEASE CHECK THE STATUS OF THE DOCUMENT IN IDM
ITER Vacuum Handbook
Attachment 1
Inspection and Qualification of Welded Joints
Table of Contents
2 The Welding and Inspection Plan 3
3 Welder and operator Qualification 3
5 Welding Procedure Specification 4
6 Welding Procedure Qualification Record 5
6.1 Qualification of the Welding Procedure Specification. 6
6.2.3.1 Thickness Range for Welds Excluding Fillet and Branch 7
6.2.3.2 Thickness Range for Fillet Welds 8
6.2.3.3 Thickness Range for Branch Pipes (Diameter Range) 8
6.2.4 Range of Approval of Welded Joints 8
6.2.5 Range of Approval Welding Consumables 8
6.3 Non –Destructive Examination 9
6.4.3 Qualification for Welds Under Stressed Applications. 12
7.1 Inspection of Fusion Welded Joints 12
7.2 Production proof samples 13
7.3 Helium Leak Testing of Production Welds 14
7.4 Repair by welding of production welds 14
8 Documentation 14
This Attachment relates to welding of vacuum boundaries and outlines the procedures for documentation, qualification, approval and testing.
Whilst this Attachment is based on the international standards ISO 9606, ISO 15614 and ISO 15609, additional requirements are specified to achieve the high integrity and reliability of the vacuum systems to ensure the required ITER machine reliability. Specifically this Attachment is more stringent in places than the standards in the range of approval for joint types, mechanical testing and acceptance criteria.
The requirements are designed to complement codes which may be used. Where requirements differ in general the more stringent standard should be applied or advice sort from ITER.
2 The Welding and Inspection Plan
Before fabrication can commence the supplier shall prepare for approval a weld plan. The weld plan is a drawing which cross references each welded joint to a supporting Welding Procedure Specification (WPS).
3 Welder and operator Qualification
The welder qualification is intended to show the competence of the welder/operator for implementing the specified WPS.
Welder qualification shall be in accordance with ISO 9606 or equivalent standards agreed in advance. For welding operators ISO 14732 shall be used.
Other standards may be approved by ITER on submission of documentation detailing the equivalence between the proposed standards and the standards quoted herein. All standards and documentation pertaining to equivalence shall be submitted in English and must be agreed in advance of welding operations.
The supplier shall establish and maintain a list of qualified welders and operators. This list shall include their individual identification and range of welds for which they are qualified.
The latest revisions of the standards listed in Table 4-1 shall be applied in the procedure, qualification, and acceptance testing etc. of any welding process and form, where applicable, part of this attachment. Alternative national standards may be submitted for approval but they must meet the minimum technical requirements of this Attachment. Alternatives must be formally accepted through written communication before welding can commence.
Where this attachment is more stringent than the standards, this document takes precedence. Where specified in this document, additional requirements to or requirements differing from the quoted international standards have been highlighted in bold italics.
ISO 15607 | Specification for the qualification of welding procedures for metallic materials – general rules |
ISO 15614 | Specification and qualification of welding procedures for metallic materials-welding procedure test |
ISO 15609 | Specification and qualification of welding procedures for metallic materials – Welding procedure specification |
ISO 17637 | Non-destructive examination of fusion welds. Visual examination. |
ISO 4063 | Welding and allied processes – Nomenclature of processes and reference numbers. |
ISO 3452 | Non-destructive testing. Penetrant testing. |
ISO 17638, ISO 9934 | Non-destructive examination of welds. Magnetic particle examination of welds |
ISO 17636 | Non-destructive examination of welds. Radiographic examination of welds. |
ISO 17640 | Non-destructive examination of welds. Ultrasonic Examination. |
ISO 9606-1 | Qualification test of welders – Fusion welding – Part 1: steels. |
ISO 9606 | Qualification test of welders – Fusion welding – Part 2: aluminium and aluminium alloys. |
ISO 14344 | Welding and allied processes – Flux and gas shielded electrical welding processes – Procurement guidelines for consumables. |
ISO 5817 | Fusion welded joints in steel, nickel, titanium and their alloys (beam welding excluded) – Quality levels for imperfections. |
ISO 14732 | Welding personnel. Approval testing of welding operators |
ISO 9712 | Non-destructive testing - Qualification and certification of NDT personnel |
ISO 22825 | Non-destructive testing of welds - Ultrasonic testing - Testing of welds in austenitic steels and nickel-based alloys |
ISO 10380 | Corrugated metal hoses and hose assemblies |
Table 4-1 Standards relating to welding
5 Welding Procedure Specification
The Welding Procedure Specification (WPS) is a document which details all the variables which must be defined to produce a weld of acceptable quality. The qualification of the WPS shall be performed in accordance with this Attachment.
Each WPS shall detail each type of weld and shall include, but not be limited to, the following in accordance with ISO 15609:
⮚ Identification of equipment manufacturer
⮚ Equipment calibration records
⮚ Examiner or test body
⮚ WPS number
⮚ Parent material(s), defining which joint element is comprised of a given material
⮚ Filler material(s): classification, type, trade name, flux, diameter of electrode, rod, or wire
⮚ Joint sketch and weld run sequence
⮚ Range of qualified thicknesses and/or diameters
⮚ Welding position
⮚ Welding process (in accordance with ISO 4063)
⮚ Welding technique (single, multipass etc)
⮚ Groove or edge preparations (cleaning, degreasing, jigging etc)
⮚ Shielding and backing gas (composition and flow rates)
⮚ Welding equipment parameters which may include:-
▪ AC or DC
▪ Polarity
▪ Current range
▪ Voltage range
▪ Pulsed welding parameters
▪ Tungsten electrode diameter and type
▪ Nozzle diameter
⮚ Backing: method and type, materials and dimensions
⮚ Back gouging: method
⮚ Heating: pre-heat temperature, interpass temperature, post weld temperature
⮚ Drying and preservation temperatures for covered electrodes (if applicable)
Additional Parameters for automatic welding may include:
▪ Welding equipment specification
▪ Tool and programme numbers (where applicable)
▪ Travel speed range
▪ Wire feed speed range
▪ Arc Voltage Control parameters
For special processes (remote welding etc) additional information may be required.
6 Welding Procedure Qualification Record
The Welding Procedure Qualification Record (WPQR) is used to record all the relevant data from the welding of test pieces in the qualification of the WPS.
⮚ The qualification of the WPS provides proof that the defined welding process, will achieve a weld of acceptable quality. The welding and testing of this must be witnessed by an ITER recognised Independent Inspection Authority.
All welding data and results from the required non-destructive and destructive testing shall be documented using a Welding Procedure Qualification Record (WPQR). It can also be called Welding Procedure Approval Record (WPAR).
6.1 Qualification of the Welding Procedure Specification.
An existing Welding Procedure Qualification Record (WPQR or WPAR) is acceptable if the following conditions are met:
⮚ The test must have been performed in the same environment as proposed for production, using the same welding technique, process, joint configuration and welding equipment (for mechanised welds)
⮚ The allowable ranges are the same with regard to essential variables.
⮚ The related Preliminary Welding Procedure Specification (pWPS) has been qualified in accordance with ISO 15614
⮚ The test must have been witnessed by an ITER recognised Independent Inspection Authority
Weld produced for qualification must be performed by suitably qualified welders.
The supplier must also demonstrate that the welding equipment and plant use for qualification is properly maintained and calibrated in accordance with the relevant operation and maintenance schedules.
For differing grades of stainless steel (304, 304L, 316, 316L and 316LN-IG), cross qualification can be accepted for manual welds when 316L filler is used. Cross qualification is not acceptable for automatic welds. Transition welds joining dissimilar materials other than those listed above must have specific qualification tests performed.
Qualification on production metal type and grade is mandatory. There is no requirement for the use of material from the production heat number for qualification of the WPS.
ISO9001:2000 (clause 7.5.2) states that welding is always a special process. Welding processes commonly used in the manufacture of ITER components with a vacuum classification (according to ITER Vacuum Handbook) and their classification in the context of ITER are listed in Table 1. For special welding processes (Table 6-2) Production Proof Samples shall be manufactured from the production heat number.
Table 6-1 Welding Processes
6.2.3.1 Thickness Range for Welds Excluding Fillet and Branch
The qualification of a welding procedure test on thickness t shall include qualification for thickness in the ranges given in Table 6-2 in accordance with ISO 15614.
Thickness of test | Range of Approval1,2 (Dimensions in mm) | ||
piece ‘t’ (mm) (where ‘t’ is the thickness of the thinner material) | Parent material thickness | Deposited weld metal thickness for each process ‘s’ | |
For single run or single run from both sides | Multi-run | ||
t ≤ 3 | 0.5 t to 2 t | Max. 2 s | |
3 < t ≤ 12 | 0.5 t (3 min) to 1.3 t | 3 to 2 t | Max. 2 s |
12 < t ≤ 20 | 0.5 t to 1.1 t | 0.5 t to 2 t | Max. 2 s |
20 < t ≤ 40 | 0.5 t to 1.1 t | 0.5 t to 2 t | Max. 2 s when s < 20 Max. 2 t when s ≥ 20 |
40 < t ≤ 100 | 0.5 t to 2 t | Max. 2 s when s < 20 Max. 200 when s ≥ 20 | |
100 < t ≤ 150 | 50 to 2 t | Max. 2 s when s < 20 Max. 300 when s ≥ 20 | |
t > 150 | 50 to 2 t | Max. 2 s when s < 20 Max. 1.33 t when s ≥ 20 | |
1 - When impact requirements are specified but impact tests have not been performed, the maximum thickness of qualification is limited to 12 mm. 2 – The range of approval may have to be reduced in order to avoid hydrogen cracking. | |||
Table 6-2 Range of Approval for material thickness and weld deposit thickness– all welds
6.2.3.2 Thickness Range for Fillet Welds
The qualification of a welding procedure test on thickness t shall include qualification for thickness in the ranges given in Table 6-3 in accordance with ISO 15614.
Thickness of test piece ‘t’ (mm) | Range of approval (Dimensions in mm) | ||
Material thickness | Throat thickness | ||
Single run | Multi-run | ||
t ≤ 3 3 < t < 30 t ≥ 30 | 0.7t to 2 t 3 to 2 t ≥ 5 | 0.75 a to 1.5 a 0.75 a to 1.5 a † | No restriction No restriction No restriction |
Note 1: a is the throat thickness of the test piece Note 2: Fillet welds cannot be qualified by Butt welds † For special applications only. Each throat thickness has to be proofed separately by a welding procedure test | |||
Table 6-3 Range of qualification for material thickness and throat thickness of fillet welds
6.2.3.3 Thickness Range for Branch Pipes (Diameter Range)
The qualification of a welding procedure test on diameter D shall include qualification for diameters in the following ranges give in Table 6-4 in accordance with ISO 15614.
Diameter of test piece D1,2 (in mm) | Range of approval |
D ≤ 25 | 0.5 D to 2 D |
D > 25 | ≥ 0.5 D up to plates (25 mm min) |
1) D is the outside diameter of the pipe or the outside diameter of the set-on branch pipe 2) Approval given for plates also covers pipes when outside diameter is > 500 mm | |
Table 6-4 Range of approval for pipe and branch connections
6.2.4 Range of Approval of Welded Joints
6.2.5 Range of Approval Welding Consumables
All consumables shall be certified to a standard acceptable to the ITER IO (e.g. ISO 14344). In the case of manual welding processes the approval range of filler materials covers other filler metals as long as they are in the same range and chemical composition.
In the case of automatic and semi automatic welding processes the welding consumables used for qualification shall be the same batch as those used for production welds. Following any change during production, weld samples shall be welded and examined prior to the continuation of production with the new batch of consumables. Qualification using filler does not qualify autogenous (fusion welding with out filler material) welds or vice versa.
In all cases, any change in the welding process will require a requalification of the process. In addition, in the case of automatic welding any change to the welding equipment will require requalification.
Welds for qualification shall be done in local conditions similar to the local conditions where the production weld will be made. Local access to the test piece (in terms of welder access) and the orientation of the test piece (relative to the welder) shall be similar to those for the production weld for which they qualify.
Type of Joint in Approval Test Piece | Range of Approval | |||||||||||||
Butt welds on plate | T Butt welds on plate | Fillet weld on plate | Butt welds on pipe | Fillet weld on pipe | Branch welds on pipe | |||||||||
Welded from one side | Welded from both sides | Welded from one side | Welded from both sides | Welded from one side | Set on | Set through | ||||||||
With backing | No backing | With gouging | No gouging | With backing | No backing | |||||||||
Butt weld on plate | Welded from one side | With Backing | 🗸 | 🗴 | Δ | Δ | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 |
No Backing | Δ | 🗸 | Δ | Δ | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | ||
Welded from both sides | With gouging | 🗴 | 🗴 | 🗸 | Δ | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | |
No gouging | 🗴 | 🗴 | 🗴 | 🗸 | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | ||
Butt weld on pipe | Welded from one side | With backing | Δ | 🗴 | Δ | Δ | 🗴 | Δ | 🗴 | 🗸 | 🗴 | 🗴 | 🗴 | 🗴 |
No backing | Δ | Δ | Δ | Δ | Δ | Δ | 🗴 | Δ | 🗸 | 🗴 | 🗴 | 🗴 | ||
T Butt weld on plate | Welded from one side | 🗴 | 🗴 | 🗴 | 🗴 | Δ | Δ | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | |
Welded from both sides | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | 🗸 | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | ||
Fillet weld | Plate | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | 🗸 | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | |
Pipe | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | Δ | 🗴 | 🗴 | 🗸 | 🗴 | 🗴 | ||
Branch weld in pipe | Set on | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | 🗸 | 🗴 | |
Set through | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | 🗴 | 🗸 | |||
Key: 🗸 Indicates the weld for which the WPS is approved in the approval test Δ Indicates those welds for which the WPS is also approved 🗴 Indicates those welds for which the WPS in not approved | ||||||||||||||
Table 6-5 Range of approval for type of joint
6.3 Non –Destructive Examination
Supplier’s inspectors shall be competent in accordance with ISO 9712.
After post weld heat treatment and prior to destructive testing, test pieces shall be examined by the following:
⮚ Visual examination (in accordance with ISO 17637)
⮚ Dye Penetrant testing (in accordance with ISO 3452) or Magnetic particle testing (in accordance with ISO 9934)
Inspection using Photothermal camera is permitted in the case where the manufacturer has qualified the method/acceptance criteria prior to the weld qualification
⮚ Radiographic examination (in accordance with ISO 17636)
and/or
⮚ Ultrasonic examination (in accordance with ISO 17640 and ISO 22825 for austenitic steels and nickel alloys)
For a pipe or plate of 2 mm (or less) wall thickness, the method of examination shall be agreed prior to examination.
Defects which are detected by the relevant non-destructive examination method shall be assessed in accordance with ISO 5817 level B. In particular acceptance criteria are detailed in Table 6-6. Table 6-6 is in accordance with ISO 5817 however contains additional requirements for production vacuum boundary welds.
Defect Type | Permitted maximum | |
Planar Defects | Cracks or lamellar tears Lack of root fusion Lack of side fusion Lack of inter-run fusion Lack of root penetration | Not permitted |
Solid inclusions | Slag inclusions - individual | 20% of t or 2 mm, which ever is smaller |
Slag inclusions - Group | Aggregate length not to exceed t in a length of 12 t, except when the distance between successive indications exceeds 6L where L is the longest indication in the group | |
Inclusions – Tungsten or Copper | Not permitted | |
Cavities | Isolated pores - round | Diameter <20% t or 2 mm, whichever is smaller |
Gas pore uniformly distributed porosity | 1% for single layer (2% for multi-layer) by area where the area of the radiograph to be considered is the length of the weld affected by the porosity times the maximum thickness of the weld | |
Elongated pores - wormholes | Not permitted | |
Linear Porosity | Not permitted | |
Profile defects | Under cut | Some intermittent undercut permitted. Depth not to exceed 0.5 mm for t > 3 mm or 10% for t < 3 mm. Under cut to blend smoothly with the parent material. |
Incompletely filled groove, sagging. Root concavity, shrinkage groove | 0.05 t or 0.5 mm, which ever is smaller. Weld thickness shall not be less than the parent plate thickness | |
Excess penetration - pipe | Not greater than 5% of the pipe internal diameter up to 2 mm max. | |
Excess penetration – plate | t = 0.5 to 3 mm: , h ≤1 mm+10% b t > 3mm: h ≤1 mm+20% b max 3mm. | |
h=height of excess penetration on backside of plate and b the width | ||
Excess weld material | Not greater than 10% weld width | |
Misalignment | Not greater than 10% of the parent material thickness | |
Fillet leg length (asymmetry) | Unequal leg length should not exceed 20% of the fillet throat thickness | |
Burn through | Not permitted | |
Other | Root oxidation | Not permitted where a backing purge gas is specified in the WPS |
The number of test specimens that shall be subjected to destructive testing is given in Table 6-7 in accordance with ISO 15614.
TEST SPECIMEN | No of Tests |
BUTT WELD | |
Transverse Tensile (room temp.) | 2 |
Root Bend (for t <12mm) | 2 |
Face Bend (for t <12mm) | 2 |
Side Bend ( for t >12mm) | 4 |
Transverse Tensile (design temp. if required by tech. spec.) | 1 |
Impact test (for t ≥12 mm one set from weld metal and one set from | 2 |
HAZ if required by tech. spec). | |
1 | |
Micro-examination x 200 (if required by tech spec.) | 1 |
Hardness test survey | 1 |
Burst test† | 1 |
FILLET WELD | |
Fracture Test | 1 |
Macro-examination (with photos) | 4 |
Micro-examination x 200 (if required by tech. spec.) | 2 |
Hardness Survey | 2 |
T-BUTT/BRANCH CONNECTION | |
Macro-examination (with photos) | 4 |
Micro-examination x 200 (if required by tech. spec.) | 2 |
Hardness Survey | 2 |
SOCKET/LIP WELD+ | |
Macro-examination (with photos) | 4 |
Micro examination x 200 (if required by tech. spec.) | 2 |
Hardness Survey | 2 |
† Longitudinal butt weld on bellows (or flexible) tube to ISO 10380 | |
Table 6-7 Number of destructive test specimens
Unless specified differently in Table 6-8 destructive testing and test results shall comply with ISO 15614.
Bend test (stainless steel and nickel alloy only) | The bend angle shall be 180° round a former of diameter 2t, where t is the thickness of the specimen. The bend test specimen shall have no open defects exceeding 2 mm measured in any direction on the convex surface after bending. |
Micro - Examination | In general micro-examination shall only be required for welds which form part of the vacuum boundary or are in contact with cryogenic liquids. If required micro- examination tests shall be specified in the technical specification. |
Macro Examination | For lip welds, penetration shall be 0.7t where t is the thickness of the thinner material. |
Table 6-8 Acceptable test results
6.4.3 Qualification for Welds Under Stressed Applications.
Additional destructive tests to those listed in Table 6-7 to qualify welds under stressed applications may be required as defined in the technical specification.
Production welds shall be performed to qualified procedures by qualified welders.
The WPS shall be available for reference by welders or welding operators, by the responsible welding engineer and by the authorised inspector.
The contractor must also demonstrate that the welding equipment and plant is properly maintained and calibrated in accordance with the relevant operation and maintenance schedules.
7.1 Inspection of Fusion Welded Joints
After post weld heat treatment welds shall be subject to the following tests:
⮚ Visual examination (in accordance with ISO 17637)
⮚ Dye Penetrant testing (in accordance with ISO 3452) if permitted†. (Inspection using Photothermal camera is permitted in the case where the manufacturer has qualified the method/acceptance criteria prior to the weld)
⮚ Radiographic examination (in accordance with ISO 17636) and / or
⮚ Ultrasonic examination (in accordance with ISO 17640 and ISO 22825 for austenitic steels and nickel alloys)
† See ITER Vacuum Handbook Section 7.1.4.
The range of wall thickness and preferred volumetric examination method is given in Table 7-1 .
For all VQC 1A, VQC 2A water boundaries and vacuum boundary welds which become inaccessible, 100% volumetric examination of production welds shall be performed, unless a method of pre-production proof sampling is approved.
For all other vacuum boundaries, volumetric examination of 10% of production welds shall be performed unless a method of pre-production proof sampling is approved. In the event of failures, this shall be increased to 100% examination of the batch, defined as same welder/same WPS/ same weld. ……. Acceptance criteria are specified in Table 6-6
On welds where it is specified that volumetric examination be performed and radiography or ultrasonic inspection is not possible, Production Proof Sampling is required.
Wall Thickness | Preferred Volumetric Examination Method |
Wt < 12 mm | Radiography |
12 mm > wt < 19 mm | Radiography & Ultrasonic |
wt > 19 mm | Ultrasonic |
Table 7-1 Range of wall thickness and preferred volumetric examination method
Welds where radiography or Ultrasonic testing is impractical (e.g. welds that are not full penetration butt welds) must be covered by Production Proof Sampling (PPS).
Each PPS will only represent a specific type of weld and must use the same materials, thickness and set-up as the production weld.
For VQC 1 and 2 vacuum boundary welds a PPS must be welded during the same shift as the production welds and by the same welder using the same equipment to be representative of the production welding.
If more than one welder welds the production welds, each must perform a PPS. PPS’s are required each shift production welding is being performed to represent the welds performed on that shift.
For VQC 3 and 4 vacuum boundary welds a PPS shall be welded for each welder performing the production welds.
PPS’s should be sectioned and macro examined in four places (including one stop/start area). Photographs of the macros giving the date the PPS was welded, the welder’s identity and identifying the production welds it is covering must be included in the final documentation package.
An ITER representative will normally witness PPS welding and all PPS macros shall be reviewed. Operations with witness and hold points to facilitate this must be incorporated in the Work Schedule.