Document: NUREG-0800
Document ID: 2b0752f4-9104-408c-b400-d0ec931a3dbf
Document Type: srp
Title: FIRE PROTECTION PROGRAM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350030.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.5.1
CFR Part: 
CFR Title: 

Content:
rmal decomposition products of Halon; and (4) Location and selection of the activating detectors. 9.5.1-41 Rev. 2 - July 1981 e. Carbon Dioxide Suppression Systems Carbon dioxide extinguishing systems should comply with the requirements of NFPA 12, "Carbon Dioxide Extinguishing Systems.' Where automatic carbon dioxide systems are used, they should be equipped with a predischarge alarm system and a discharge delay to permit personnel egress. Provisions for locally disarming automatic carbon dioxide systems should be key locked and under strict adminis- trative control. Automatic carbon dioxide extinguishing systems should not be disarmed unless controls as described in Position C.2.c. are provided. Particular consideration should also be given to: (1) Minimum required C02 concentration, distribution, soak time, and ventilation control; (2) Anoxia and toxicity of C02; (3) Possibility of secondary thermal shock (cooling) damage; (4) Conflicting requirements for venting during CO2 injection to prevent overpressurization versus sealing to prevent loss of agent; and (5) Location and selection of the activating detectors. f. Portable Extinguishers Fire extinguishers should be provided in areas that contain, or could present a fire exposure hazard to, safety-related equipment in accordance with guide- lines of NFPA 10, "Portable Fire Extinguishers, Installation, Maintenance and Use." Dry chemical extinguishers should be installed with due consideration given to possible adverse effects on safety-related equipment installed in the area. 7. Guidelines for Specific Plant Areas a. Primary and Secondary Containment (1) Normal Operation - Fire protection requirements for the primary and secondary conta nment areas should be provided for hazards identified by the fire hazards analysis. Examples of such hazards include lubricating oil or hydraulic fluid system for the primary coolant pumps, cable tray arrangements and cable penetra- tions, and charcoal filters. Because of the