Document: NUREG-0800
Document ID: 9c59dff8-9325-43e2-8e81-843a0f6b4b2f
Document Type: srp
Title: and Regulatory Guide 1.189.
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:
g systems (e.g., hydrants and standpipes). Specific considerations include: a. Maintaining adequate and reliable fire water supply and distribution to meet flow demands based on fire hazards analysis. Decommissioning activities may result in the isolation, removal, or abandonment of portions of the distribution system. Any system changes should be reviewed to ensure that adequate flow and coverage is provided to the remaining plant areas. For fire water supplies and distribution systems that are shared by multi-unit sites, decommissioning activities should not affect the water supply to the operating unit(s). b. Automatic fire suppression systems, existing at the time a plant enters the decommissioning phase, should be maintained operable as necessary based on the fire hazards analysis. The need for automatic fire suppression systems in plant areas during decommissioning activities may change depending on the type of operations being performed in an area, the addition or removal of combustible materials, and/or the removal of radioactive materials and contamination. c. Manual fire suppression systems should be provided in the plant to supplement automatic fire protection systems and to provide suppression coverage to areas not protected by automatic systems, including areas where systems have been deactivated. Decommissioning activities may change the plant configuration and fire hazards; may require the construction of temporary enclosures or structures; and may necessitate the Revision 4 - October 2003 49 abandonment or removal of automatic systems as facilities are dismantled or modified and radiological hazards are removed. Manual fire suppression capability should be maintained throughout shutdown/decommissioning to ensure protection against fire- induced radioactive material releases. d. The shutdown/decommissioning fire protection program should describe the manual fire fighting capability for the plant. Manual firefighting capability should be provided by an