Critical organ definition

Critical organ means the most ex- posed human organ or tissue exclusive of the integumentary system (skin) and the cornea.§ 191.03 Standards.(a) Management and storage of spent nuclear fuel or high-level or trans- uranic radioactive wastes at all facili- ties regulated by the Commission or by Agreement States shall be conducted in such a manner as to provide reason- able assurance that the combined an- nual dose equivalent to any member of the public in the general environment resulting from: (1) Discharges of radio- active material and direct radiation from such management and storage and (2) all operations covered by Part 190; shall not exceed 25 millirems to the whole body, 75 millirems to the thy- roid, and 25 millirems to any other critical organ.(b) Management and storage of spent nuclear fuel or high-level or trans- uranic radioactive wastes at all facili- ties for the disposal of such fuel or waste that are operated by the Depart- ment and that are not regulated by the Commission or Agreement States shall be conducted in such a manner as to provide reasonable assurance that the combined annual dose equivalent to any member of the public in the gen- eral environment resulting from dis- charges of radioactive material and di- rect radiation from such management and storage shall not exceed 25 millirems to the whole body and 75 millirems to any critical organ.§ 191.04 Alternative standards.(a) The Administrator may issue al- ternative standards from those stand- ards established in § 191.03(b) for waste management and storage activities at40 CFR Ch. I (7–1–11 Edition)facilities that are not regulated by the Commission or Agreement States if, upon review of an application for such alternative standards:
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Critical organ means the most ex- posed human organ or tissue exclusive of the integumentary system (skin) and the cornea.
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Critical organ means that organ (or tissue) in which the dose equivalent would be the most significant due to a combination of the organ’s radiosensitivity and a particular dose pattern throughout the body.
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Examples of Critical organ in a sentence

  • Critical organ doses, parallel vs serial organs, typical dose-volume constraints c.

  • Critical organ dose (COD) is more commonly reported in the literature for radiologic examinations.

  • Critical organ perfusion is not assessed by cardiac output measurements.

  • Critical organ doses, mean-tissue and effective doses of a crew member in the ISS compartments are also estimated with the spherical phantom data.

  • Critical organ doses, mean-tissue and effective doses of a crew member in the ISS compartments are also estimated with the spherical phantom.

  • Critical organ dose refers to the energy deposited per unit mass to individual critical organs for which the radiosensitivity and radiation dose are high.


More Definitions of Critical organ

Critical organ means the most exposed human organ or tissue exclusive of the integumentary system (skin) and the cornea. 40 CFR Part 191.12 Definitions Accessible environment means: (1) The atmosphere: (2) land surfaces; (3) surface waters; (4) oceans; and (5) all of the lithosphere that is beyond the controlled area.Active institutional control means: (1) Controlling access to a disposal site by any means other than passive institutional controls; (2) performing maintenance operations orremedial actions at a site, (3) controlling or cleaning up releases from a site, or (4) monitoring parameters related to disposal system performance.Annual committed effective dose means the committed effective dose resulting from a one-year intake of radionuclides released plus the annual effective dose caused by direct radiation from facilities or activities subject to subparts B and C of this part.Aquifer means an underground geological formation, group of formations, or part of a formation that is capable of yielding a significant amount of water to a well or spring.Barrier means any material or structure that prevents or substantially delays movement of water or radionuclides toward the accessible environment. For example, a barrier may be a geologic structure, a canister, a waste form with physical and chemical characteristics that significantly decrease the mobility of radionuclides, or a material placed over and aroundwaste, provided that the material or structure substantially delays movement of water or radionuclides.Controlled area means: (1) A surface location, to be identified by passive institutional controls, that encompasses no more than 100 square kilometers and extends horizontally no more than five kilometers in any direction from the outer boundary of the original location of the radioactive wastes in a disposal system: and (2) the subsurface underlying such a surface location.Disposal system means any combination of engineered and natural barriers that isolate spent nuclear fuel or radioactive waste after disposal.Dose equivalent means the product of absorbed dose and appropriate factors to account for differences in biological effectiveness due to the quality of radiation and its spatial distribution in the body; the unit of dose equivalent is the "rem" ("sievert" in SI units).Effective dose means the sum over specified tissues of the products of the dose equivalent received following an exposure of, or an intake of radionuclides into, specified tissues of the body,...
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Related to Critical organ

  • Political organization means a party, committee, association, fund, or other organization (whether or not incorporated) that is required to file a statement of organization with the State Board of Elections or a county clerk under Section 9-3 of the Election Code (10 ILCS 5/9-3), but only with regard to those activities that require filing with the State Board of Elections or a county clerk.

  • Tribal organization means the elected governing body of any Indian tribe or any legally established organization of Indians that is controlled by one or more such bodies or by a board of directors elected or selected by one or more such bodies (or elected by the Indian population to be served by such organization) and that includes the maximum participation of Indians in all phases of its activities; and

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  • Mental or Nervous Disorder means any disease or condition, regardless of whether the cause is organic, that is classified as a Mental or Nervous Disorder in the current edition of International Classification of Diseases, published by the U.S. Department of Health and Human Services, is listed in the current edition of Diagnostic and Statistical Manual of Mental Disorders, published by the American Psychiatric Association or other relevant State guideline or applicable sources.

  • international organization shall have the meanings set forth in Section 7701 of the Code or successor provisions.

  • international organisation means an organisation and its subordinate bodies governed by public international law, or any other body which is set up by, or on the basis of, an agreement between two or more countries.

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  • Sponsoring organization means any organization that establishes,

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  • technical and organisational security measures means those measures aimed at protecting personal data against accidental or unlawful destruction or accidental loss, alteration, unauthorised disclosure or access, in particular where the processing involves the transmission of data over a network, and against all other unlawful forms of processing.

  • Participating Organization means an organization which elects to offer coverage under a Policy by completing a participation agreement that has been accepted by the Company.

  • Attack directed against any civilian population means a course of conduct involving the multiple commission of acts referred to in paragraph 1 against any civilian population, pursuant to or in furtherance of a State or organizational policy to commit such attack;

  • Total organ dose equivalent (TODE) means the sum of the deep dose equivalent and the committed dose equivalent to the organ receiving the highest dose as described in 641—40.86(1)“f.”

  • Total organic carbon or ”TOC” means total organic carbon reported in units of milligrams per liter (mg/L), as measured using heat, oxygen, ultraviolet irradiation, chemical oxidants, or combinations of these oxidants that convert organic carbon to carbon dioxide, rounded to two significant figures.

  • Quasi-Sovereign means any entity fully guaranteed by a Sovereign or more than 50% directly or indirectly owned by a Sovereign. *

  • research organisation means a legal entity established as a non-profit organisation which carries out research or technological development as one of its main objectives;

  • Illegal Activity means the wilful possession of an illegal drug, dangerous object, or stolen item.

  • Motorcycling Organisation means and includes MA, and the MA members (including the SCBs and affiliated clubs) and where the context so permits, their respective directors, officers, members, servants or agents.

  • Competing Organization means any person or organization, including the Executive, engaged in, or about to become engaged in, research on or the acquisition, development, production, distribution, marketing or providing of a Competing Product.

  • Victim means a person that domestic violence, sexual assault, or stalking has been committed against as defined in this Article.

  • Foreign terrorist organization means an organization designated as a foreign terrorist organization by the United States secretary of state as authorized by 8 U.S.C. Section 1189.

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  • Victim or target of Nazi persecution means any individual persecuted or targeted for persecution by

  • Violent juvenile felony means any of the delinquent acts enumerated in subsection B or C of

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