Document: NUREG-0800
Document ID: 16c1145e-ffe2-48c4-bd44-0ccaeb83dc99
Document Type: srp
Title: FIRE PROTECTION PROGRAM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070563.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.5.1
CFR Part: 
CFR Title: 

Content:
NFPA 14 (Reference 14) , "Standpipe and 217 Hose Systems," for sizing, spacing, and pipe support requirements. 218 Hose stations should be located as dictated by the fire hazard analysis to facilitate access and use for firefighting operations. Alternative hose stations should be provided for an area if the fire hazard could block access to a single hose station serving that area. Provisions should be made to supply water at least to standpipes and hose connections for manual firefighting in areas containing equipment required for safe plant shutdown in the event of a safe shutdown earthquake. The piping system serving such hose stations 9.5.1-51 DRAFT Rev. 4 - April 1996 should be analyzed for SSE loading and should be provided with supports to ensure system pressure integrity. The piping and valves for the portion of hose standpipe system affected by this functional requirement should, as a minimum, satisfy ANSI B31.1, "Power Piping." The water supply for this condition may be obtained by 219 manual operator actuation of valves in a connection to the hose standpipe header from a normal seismic Category I water system such as the essential service water system. The cross connection should be (a) capable of providing flow to at least two hose stations (approximately 284 L/m (75 gpm) per hose station), and (b) designed to the same 220 standards as the seismic Category I water system; it should not degrade the performance of the seismic Category I water system. For new applications, the sprinkler systems in the reactor building and the wet standpipe systems in the reactor and control buildings must be designed in accordance with ANSI B31.1 and analyzed to remain functional following a SSE. A portion of the water supply system (a tank, a pump, and part of the yard supply main) must also be designed to these requirements. The remainder of the water systems must be designed to the appropriate fire protection standards such as NFPA 13 and NFPA 15. During normal operation,