DESIGN/INSTALLATION STANDARDS FOR NEW OR REPLACEMENT. TANK SYSTEM(S) AND COMPONENTS 1. The design/installation assessment for each tank system(s)/component(s) design shall include, at a minimum, the following information: (a) Design standard(s) according to which tank(s) and/or the ancillary equipment are constructed; (b) Hazardous characteristics of the hazardous and/or radioactive substance(s) to be handled; (c) For each new tank system(s)/component(s) in which the external shell of a metal tank or any external metal component(s) of the tank system(s) will be in contact with the soil or water, a determination by a corrosion expert of: (i) Factors affecting the potential for corrosion, including but not limited to: (A) Soil moisture content; (B) Soil pH; (C) Soil sulfides level; (D) Soil resistivity; (E) Structure to soil potential; (F) Influence of nearby underground metal structures (e.g., piping) (G) Existence of stray electrical currents; (H) Existing corrosion-protection measures (e.g., coating, cathodic protection), and (ii) The type and degree of external corrosion protection that are needed to ensure the integrity of the tank system(s) during the use of the system(s) or component(s), consisting of one or more of the following: (A) Corrosion-resistant materials of construction such as special alloys, fiberglass reinforced plastic, etc.; (B) Corrosion-resistant coating (such as epoxy, fiberglass, etc.) with cathodic protection (e.g., impressed current or sacrificial anodes); and (C) Electrical isolation devices such as insulating joints, flanges, etc. (d) For underground tank system components that are likely to be adversely affected by vehicular traffic, a determination of design or operational measures that will protect the tank system against potential damage; and (e) Design considerations to ensure that: (i) Tank foundations will maintain the load of a full tank; (ii) Tank systems will be anchored to prevent flotation or dislodgment where the tank system is placed in a saturated zone, or is located within a seismic fault zone which has had displacement during the Holocene period; and (iii) Tank systems will withstand the effects of frost heave. 2. The DOE shall ensure that proper handling procedures are adhered to in order to prevent damage to tank system(s) or component(s) during installation. Prior to covering, enclosing, or placing a new tank system or component in use, a registered professional engineer who is trained and experienced in the proper installation of tank systems or components, shall inspect the system for the presence of any of the following items: (a) Weld breaks; (b) Punctures; (c) Scrapes of protective coatings; (d) Cracks; (e) Corrosion; (f) Other structural damage or inadequate construction or installation. All such discrepancies shall be remedied before the tank system is covered, enclosed, or placed in use. 3. New tank system(s)/component(s) that are placed underground and that are backfilled shall be provided with a backfill material that is a noncorrosive, porous, homogeneous substance and that is installed so that the backfill is placed completely around the tank and compacted to ensure that the tank and piping are fully and uniformly supported. 4. All new tanks and ancillary equipment shall be tested for tightness prior to being covered, enclosed, or placed in use. If a tank system is found not to be tight, all repairs necessary to remedy the leak(s) in the system shall be performed prior to the tank system being covered, enclosed, or placed into use. 5. Ancillary equipment shall be supported and protected against physical damage and excessive stress due to settlement, vibration, expansion, or construction. 6. The DOE shall provide the type and degree of corrosion protection recommended by a professional engineer or corrosion specialist, a person who is trained by experience or education to do the work, based on the information provided under Subsection 1(c), above, or other corrosion protection if the SCDHEC determines other corrosion protection is necessary to ensure the integrity of the tank system during the use of the tank system. The installation of a corrosion protection system that is field fabricated shall be supervised by a registered professional engineer to ensure proper installation. 7. The DOE shall obtain and keep on file at the facility written statements by those persons required to certify the design of the tank system and supervise the installation of the tank system in accordance with the requirements of paragraphs 1 through 6 of this Subsection, that attest that the tank system was properly designed and installed and that repairs, pursuant to paragraphs 2 through 4 of this Subsection, were performed.
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Samples: Federal Facility Agreement, Federal Facility Agreement, Federal Facility Agreement
