Document: NRC Regulatory Guide
Document ID: 80776ca5-a83d-4667-9a94-0bffa1befa91
Document Type: regulatory_guide
Title: Fire Protection Guidelines for Nuclear Power Plants (Rev. 1)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1221/ML12216A013.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.120
CFR Part: 
CFR Title: 

Content:
tice for Nuclear Reactors. b. Effective administrative measures should be implemented to prohibit bulk storage of combustible materials inside or adjacent to safety-related buildings or systems during operation or maintenance periods. Regulatory Guide 1.39 provides guidance on housekeeping, including the disposal of combustible materials. c. Normal and abnormal conditions or other anticipated operations such as modifications (e.g., breaching fire barriers or fire stops, impairment of fire detection and suppression systems) and transient fire load conditions such as those associatedwith refueling activities should be reviewed by appropriate levels of management and the fire protection staff. Appropriate special action and procedures such as fire watches or temporary fire barriers should be implemented to ensure adequate fire protection and reactor safety. In particular: (1) Work involving ignition sources such as welding and flame cutting should be done under closely monitored conditions that are controlled by a permit system. Procedures governing such work should be reviewed and approved by persons trained and experienced in fire protection. Persons performing and directly assisting in such work should be trained and equipped to prevent and combat fires. If this is not possible, a person trained in firefighting techniques and plant emergency procedures should directly monitor the work and function as a fire watch. In instances where such operations may produce flame, sparks, or molten metal through walls or penetrations, care should be taken to inspect both rooms or areas (see NFPA-51B, "Cutting and'Welding Processes"). (2) Leak testing and similar procedures such as airflow determination should use one of the commercially available techniques. Open flames or combustion-generated smoke should not be permitted. (3) Use of combustible material, e.g., HEPA and charcoal filters, dry ion exchange resins, or other combustible supplies, in safety-related areas should be