Spent Nuclear Fuel - sdmp-00330145

DOE-HDBK-XXXX-2005

06/30/2005

162. SPENT NUCLEAR FUEL. Fuel that has been withdrawn from a nuclear reactor following

irradiation, the constituent elements of which have not been separated.

Note: 10 CFR 960 and 40 CFR 191 give essentially the same definition, but add "by

reprocessing" after "have not been separated." We do not recommend including this

additional language in NEPA document glossaries, as it unnecessarily raises questions

concerning the meaning of "reprocessing."

[NWPA]

163. STABILITY CLASS. A category characterizing the degree of stability, or absence of

turbulence, in the atmosphere. The classification used for regulatory models and methods for

estimating the appropriate stability category from other meteorological data are given by EPA

(1987). The least stable category is class A, in which the high level of turbulence causes air

pollutants from any particular source to mix rapidly with surrounding air, thereby reducing

pollutant concentrations. The most stable category is class F, in which pollutants are not well

mixed but remain in relatively high concentrations within a smaller volume. Sometimes a

seventh category (i.e., G, or extremely stable) is used to represent extremely stagnant

conditions. [Derived from EPA 1987]

164. STOCKPILE MANAGEMENT. Operations associated with production, maintenance,

refurbishment, surveillance, and dismantlement of the U.S. nuclear weapons stockpile.

Related term:

Stockpile surveillance: Routine and periodic examination, evaluation, and testing of nuclear

weapons and weapon components to ensure that they conform to performance specifications

and to identify and evaluate the effect of unexpected or age-related requirements.

165. STOCKPILE STEWARDSHIP. Activities associated with research, design, development, and

testing of nuclear weapons and the assessment and certification of their safety and reliability.

166. SURFACE WATER. All bodies of water on the surface of the earth and open to the

atmosphere, such as rivers, lakes, reservoirs, ponds, seas, and estuaries. [Derived from MH, 40

CFR 141.2]

167. THREATENED SPECIES. Any plants or animals that are likely to become endangered

species within the foreseeable future throughout all or a significant portion of their ranges and

which have been listed as threatened by the U.S. Fish and Wildlife Service or the National

Marine Fisheries Service following the procedures set out in the Endangered Species Act and

its implementing regulations (50 CFR 424). (See endangered species.)

The lists of threatened species can be found at 50 CFR 17.11 (wildlife), 17.12 (plants), and

227.4 (marine organisms).

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