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:
adequacy of partial suppression and detection to protect against the hazards in the area. The evaluation must be performed by a fire protection engineer and, if required, a systems engineer (Reference 47).158 (3) If the guidelines of Positions C.5.b.1 and C.5.b.2 cannot be met, then alternative or 159 160 dedicated shutdown capability and its associated circuits, independent of cables, systems or components in the area, room, or zone under consideration should be provided. c. Alternative or Dedicated Shutdown Capability (1) Alternative or dedicated shutdown capability provided for a specific fire area should be able to achieve and maintain subcritical reactivity conditions in the reactor, maintain reactor coolant inventory, achieve and maintain hot standby conditions for a PWR (hot * shutdown for a BWR) and achieve cold shutdown conditions within 72 hours and * * maintain cold shutdown conditions thereafter. During the postfire shutdown, the reactor coolant system process variables shall be maintained within those predicted for a loss of normal ac power, and the fission product boundary integrity shall not be affected; i.e., there shall be no fuel clad damage, rupture, orf any primary coolant boundary, or 161 rupture of the containment boundary. (2) The performance goals for the shutdown functions should be: (a) The reactivity control function should be capable of achieving and maintaining cold shutdown reactivity conditions. (b) The reactor coolant makeup function should be capable of maintaining the reactor coolant level above the top of the core for BWRs and be within the level indication in the pressurizer for PWRs. 9.5.1-41 DRAFT Rev. 4 - April 1996 (c) The reactor heat removal function should be capable of achieving and maintaining decay heat removal. (d) The process monitoring function should be capable of providing direct readings of the process variables necessary to perform and control the above functions. (e) The supporting functions should be capable of