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:
ng fire events and should be protected from fire damage. The communication system design should provide effective communication between plant personnel performing safe shutdown, fire brigade personnel involved in firefighting activities, and other plant emergency response activities (See Regulatory Guide 1.189 and SRP Section 9.5.2) 7.1.9 Explosion Prevention The fire hazards analysis should identify and evaluate potential explosion hazards. Large quantities of gaseous and/or liquefied hydrogen are used for water treatment and generator cooling at nuclear power plants and present a significant fire and explosion hazard. Other flammable gases may also be present on the plant site (e.g., welding/cutting gases and fuel for gas powered turbine generators). Plant battery rooms can also be a source of hydrogen accumulation (see Section C.8.1.7). Hydrogen and flammable gas systems should be designed with appropriate explosion prevention to protect areas containing equipment important to safety. Some high voltage electrical equipment (e.g. switchgear and transformers) have the potential for an energetic electrical fault that can damage structures, systems or components important to safety. Transient explosive hazards include hydrogen delivery vehicles, and gases used for hot work (welding, brazing, cutting). Preventative and protective measures should be defined in the fire protection program to address these hazards. Additional guidelines, including applicable NFPA standards are identified and discussed in Regulatory Guide 1.189. Guidelines governing hot work and flammable gases are also provided in Sections C.5 and C.9 of this BTP as well as Regulatory Guides 1.189 and 1.191. 7.2 Passive Fire Resistive Features The fire hazard analysis should discuss the application, layout and design of passive fire resistive features used in the power plant. Fire resistive features such as structural fire barriers and electrical raceway fire barrier systems provide the necessary