Document: NUREG-0800
Document ID: 69433f0d-1a24-4cf6-b8b9-31109f9f51c5
Document Type: srp
Title: FIRE PROTECTION PROGRAM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0631/ML063190014.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.5.1
CFR Part: 
CFR Title: 

Content:
he concept of alternative/dedicated shutdown systems, widely used in current reactors, should be virtually eliminated for new reactors (except for a control room or containment fire). j. Enhanced fire protection attention to smoke migration and smoke damage should reduce the contribution of these phenomena to overall fire risk. k. The increased level of passive protection necessary for new reactor designs reduces the potential contribution to overall fire risk from delay in applying water to electrical fires. l. Use of digital control systems greatly reduces the number and size of electrical cabinets in the control room, reducing (likely to a significant extent) the fire ignition frequency in this critical area. m. Where used, gel-type batteries may virtually eliminate the hydrogen gas explosion hazard in plant battery rooms. n. Reactors with passive shutdown systems have reduced combustible loading, reduced ignition sources, and reduced potential for fire-induced equipment failure. o. Use of PVC and other non-IEEE 1202 rated cable jacketing and insulation should be minimized. p. The Advanced Boiling Water Reactor (ABWR) and the Economic Simplified Boiling Water Reactor (ESBWR) design plants have no external reactor coolant pumps, eliminating a major fire hazard inside containment. In addition, the containment atmosphere during operation of the ABWR and ESBWR is inerted as with the existing BWR plants. 6.3 Additional Risk Consideration for New Reactor Fire Protection Programs Turbine buildings remain potentially high-fire-risk areas in new reactor plants. Consideration should be given to the potential risk to adjacent safety related buildings and to ensuring control room or remote shutdown station habitability in the event of a major turbine fire. 7. Fire Protection for Non-Power Operation During shutdown operations, particularly during maintenance or refueling outages, fire conditions can change significantly as a result of work activities. Redundant systems