Document: NUREG-0800
Document ID: 05a851a6-07ff-41b4-8528-a032ba433e04
Document Type: srp
Title: FIRE PROTECTION PROGRAM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0327/ML032740044.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.5.1
CFR Part: 
CFR Title: 

Content:
ble under fire/post-fire conditions, and without traversing the affected fire area. Procedures should also be described for those actions necessary to repair those safe shutdown systems and components necessary for cold shutdown. The analysis must demonstrate that these procedures can be implemented within the appropriate time limitations and with equipment, personnel, and tools available on-site. Regulatory Guide 1.189, Regulatory Position 5.7 provides additional guidance for safe shutdown procedures for operating reactors. For advanced reactor designs, all equipment in the affected fire area is assumed lost and the area cannot be re-entered to operate or repair systems required to achieve and maintain safe shutdown (see Appendix B). 2.4 Alternate and Dedicated Shutdown Alternative, dedicated, or backup shutdown capability should be identified in the safe shutdown analysis for those fire areas where the analysis identifies redundant safe shutdown paths located in the same fire area that are not protected as described in Regulatory Guide 1.189, Position 5.5, from potential damage from a single fire, fire suppression activities, or inadvertent rupture of fire suppression systems. For those fire areas where alternative or dedicated shutdown capability is required, fixed fire suppression and detection as described in Regulatory Guide 1.189, Position 5.6 should be provided. The safe shutdown analysis must demonstrate that alternate or dedicated shutdown systems, components, and any associated circuits necessary achieve and maintain hot shutdown are free of fire damage and capable of performing the necessary safe shutdown function. The Revision 4 - October 2003 18 alternate or dedicated shutdown systems and components may be unique for each fire area or zone requiring alternate or dedicated shutdown capability. As noted in Section 2.3, alternate or dedicated shutdown may require manual operator actions to be taken from remote operating stations, local panels, and/or