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:
state that the standpipe and hose stations should be located outside of the drywell). The staff found this arrangement to be acceptable because it provided the capability to reach all areas inside the containment with at least one hose stream. The ESBWR containment is inerted during normal power operation and there are multiple access hatches around the perimeter of the containment. This arrangement may also be 9.5.1-21 Revision 5 - March 2007 acceptable for other new reactor designs with inerted containments if the staff finds access and hose station capability is acceptable. 8.2 Non-Applicable Acceptance Criteria a. In at least one new reactor design (ESBWR), the standby diesel generators are not required for safe shutdown. If these diesel generators are not important to safety, the guidance in RG 1.189 for diesel generator rooms is not applicable (unless the fire hazards analysis identifies an exposure hazard from the diesel generator room to adjacent areas containing equipment or cables important to safety). The staff should consider the diesel generators’ importance to safety, as well as the potential impact on adjacent SSCs, when reviewing the fire protection provisions for these areas. b. Cable spreading rooms typically include circuits that are important to safety and that, therefore, should be protected from fire in accordance with the acceptance criteria. The cable spreading rooms in at least one new reactor design (ESBWR) do not contain any electrical cables or equipment important to safety. The guidance in RG 1.189 for cable spreading rooms is not applicable to these cable spreading rooms (unless the fire hazards analysis identifies an exposure hazard from the cable spreading room to adjacent areas containing equipment or cables important to safety). The staff should consider the cable spreading rooms’ importance to safety, as well as the potential impact on adjacent SSCs, when reviewing the fire protection provisions for these areas. 9.5.1-22