Document: NRC Regulatory Guide
Document ID: 8e45dce1-e1e7-4415-b1dd-7e2a610e545b
Document Type: regulatory_guide
Title: Fire Protection for Nuclear Power Plants (Rev. 4)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2023/ML20231A835.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.189
CFR Part: 
CFR Title: 

Content:
fitting appeal with the NRC in accordance with the process in Management Directive 8.4. DG-1359, Page 106 GLOSSARY administrative controls: Policies, procedures, and other elements that relate to the FPP. Administrative controls include but are not limited to inspection, testing, and maintenance of fire protection systems and features; compensatory measures for fire protection impairments; review of the impact of plant modifications on the FPP; fire prevention activities; fire protection staffing; control of combustible and flammable materials; and control of ignition sources. alternative shutdown: The ability to shut down the reactor that is required when it is not feasible to provide the required protection for redundant safe-shutdown trains in one or more fire areas or where fire suppression activities, including inadvertent operation or rupture of a suppression system, could prevent safe shutdown. Appendix R to 10 CFR Part 50 allows an existing plant system to be rerouted, relocated, or modified (at the time the need for an alternative means of shutdown is identified but not during or after the fire) so that it can perform the required safe-shutdown function that the redundant system damaged by fire or damaged by suppression system discharge would normally perform (see also dedicated shutdown and success path). approved: Tested and accepted for a specific purpose or application by a recognized testing laboratory or reviewed and specifically approved by the NRC in accordance with the appropriate regulatory process (e.g., 10 CFR 50.12). automatic: Self-acting, operating by its own mechanism when actuated by some monitored parameter such as a change in current, pressure, temperature, or mechanical configuration. combustible material: Any material that will burn or sustain the combustion process when ignited or otherwise exposed to fire conditions. common enclosure: An enclosure (e.g., cable tray, conduit, junction box) that contains circuits required for the