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Due to a lapse in appropriations, the NRC has ceased normal operations. However, excepted and exempted activities necessary to maintain critical health and safety functions—as well as essential progress on designated critical activities, including those specified in Executive Order 14300—will continue, consistent with the OMB-Approved NRC Lapse Plan.

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Foreign Assignee Program

Foreign Assignee Program … A personnel exchange program for foreign regulatory counterparts. This helps the NRC and partners better understand each other’s regulatory programs, capabilities, and commitments and fosters relationships between the NRC and …

Fiscal year (FY)

Fiscal year (FY) … The 12-month period from October 1 through September 30 used by the Federal Government for budget formulation and execution. The fiscal year is designated by the calendar year in which it ends; for example, FY 2009 runs from October 1, …

Head, reactor vessel

Head, reactor vessel … The removable top section of a reactor pressure vessel. It is bolted in place during power operation and removed during refueling to permit access of fuel handling equipment to the core. … Head, reactor …

Half-life, biological

Half-life, biological … The time required for the body to eliminate one half of the material taken in by natural biological means. … Half-life, …

Design-basis phenomena

Design-basis phenomena … Earthquakes, tornadoes, hurricanes, floods, etc., that a nuclear facility must be designed and built to withstand without loss of systems, structures, and components necessary to ensure public health and safety. … Design-basis …

Design-basis accident

Design-basis accident … A postulated accident that a nuclear facility must be designed and built to withstand without loss to the systems, structures, and components necessary to ensure public health and safety. … Design-basis …

Declared pregnant woman

Declared pregnant woman … A woman who is an occupational radiation worker and has voluntarily informed her employer, in writing, of her pregnancy and the estimated date of conception (see 10 CFR 20.1003 and 20.1208 ). … Declared pregnant …

Emergency preparedness (EP)

Emergency preparedness (EP) … The programs, plans, training, exercises, and resources used to prepare for and rapidly identify, evaluate, and respond to emergencies, including those arising from terrorism or natural events such as hurricanes. EP strives …

Electric power grid

Electric power grid … A system of synchronized power providers and consumers, connected by transmission and distribution lines and operated by one or more control centers. In the continental United States, the electric power grid consists of three …