Subpart A Environmental Standards for Management and Storage
Subpart B Environmental Standards for Disposal
Subpart C Environmental Standards for Ground-Water Protection

Terms Used In 40 CFR Part 191 - Environmental Radiation Protection Standards for Management and Disposal of Spent Nuclear Fuel, High-Level and Transuranic Radioactive Wastes

  • Administrator: means the Administrator of the Environmental Protection Agency. See 40 CFR 191.02
  • Affidavit: A written statement of facts confirmed by the oath of the party making it, before a notary or officer having authority to administer oaths.
  • Agency: means the Environmental Protection Agency. See 40 CFR 191.02
  • Annual committed effective dose: means the committed effective dose resulting from 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. See 40 CFR 191.12
  • Barrier: means any material or structure that prevents or substantially delays movement of water or radionuclides toward the accessible environment. See 40 CFR 191.12
  • Commission: means the Nuclear Regulatory Commission. See 40 CFR 191.02
  • Contract: A legal written agreement that becomes binding when signed.
  • Critical organ: means the most exposed human organ or tissue exclusive of the integumentary system (skin) and the cornea. See 40 CFR 191.02
  • Department: means the Department of Energy. See 40 CFR 191.02
  • Disposal: means permanent isolation of spent nuclear fuel or radioactive waste from the accessible environment with no intent of recovery, whether or not such isolation permits the recovery of such fuel or waste. See 40 CFR 191.02
  • Disposal system: means any combination of engineered and natural barriers that isolate spent nuclear fuel or radioactive waste after disposal. See 40 CFR 191.12
  • 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. See 40 CFR 191.12
  • 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, multiplied by appropriate weighting factors. See 40 CFR 191.12
  • Freedom of Information Act: A federal law that mandates that all the records created and kept by federal agencies in the executive branch of government must be open for public inspection and copying. The only exceptions are those records that fall into one of nine exempted categories listed in the statute. Source: OCC
  • General environment: means the total terrestrial, atmospheric, and aquatic environments outside sites within which any activity, operation, or process associated with the management and storage of spent nuclear fuel or radioactive waste is conducted. See 40 CFR 191.02
  • Ground water: means water below the land surface in a zone of saturation. See 40 CFR 191.12
  • Lithosphere: means the solid part of the Earth below the surface, including any ground water contained within it. See 40 CFR 191.12
  • Management: means any activity, operation, or process (except for transportation) conducted to prepare spent nuclear fuel or radioactive waste for storage or disposal, or the activities associated with placing such fuel or waste in a disposal system. See 40 CFR 191.02
  • Member of the public: means any individual except during the time when that individual is a worker engaged in any activity, operation, or process that is covered by the Atomic Energy Act of 1954, as amended. See 40 CFR 191.02
  • Oversight: Committee review of the activities of a Federal agency or program.
  • Performance assessment: means an analysis that: (1) Identifies the processes and events that might affect the disposal system. See 40 CFR 191.12
  • Public law: A public bill or joint resolution that has passed both chambers and been enacted into law. Public laws have general applicability nationwide.
  • Radioactive material: means matter composed of or containing radionuclides, with radiological half-lives greater than 20 years, subject to the Atomic Energy Act of 1954, as amended. See 40 CFR 191.12
  • SI unit: means a unit of measure in the International System of Units. See 40 CFR 191.12
  • Site: means an area contained within the boundary of a location under the effective control of persons possessing or using spent nuclear fuel or radioactive waste that are involved in any activity, operation, or process covered by this subpart. See 40 CFR 191.02
  • Spent nuclear fuel: means fuel that has been withdrawn from a nuclear reactor following irradiation, the constituent elements of which have not been separated by reprocessing. See 40 CFR 191.02
  • Storage: means retention of spent nuclear fuel or radioactive wastes with the intent and capability to readily retrieve such fuel or waste for subsequent use, processing, or disposal. See 40 CFR 191.02
  • Subpoena: A command to a witness to appear and give testimony.
  • Testify: Answer questions in court.
  • Testimony: Evidence presented orally by witnesses during trials or before grand juries.
  • Undisturbed performance: means the predicted behavior of a disposal system, including consideration of the uncertainties in predicted behavior, if the disposal system is not disrupted by human intrusion or the occurrence of unlikely natural events. See 40 CFR 191.12
  • Waste form: means the materials comprising the radioactive components of waste and any encapsulating or stabilizing matrix. See 40 CFR 191.12