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:
he inspection, testing and maintenance program to maintain the barriers, including doors, dampers, and penetration seals in their qualified configuration. Specific criteria, guidelines, and applicable codes standards for design, testing, and maintenance of structural fire barriers and barrier components are provided in Regulatory Guide 1.189. 7.2.2 Electrical Raceway Fire Barrier Systems Fire resistive protection may be applied to redundant safe shutdown electrical circuits and cable systems located in the same fire area where separation by structural fire barriers or re- routing of redundant circuits or cables is not practical. For fire areas where separation of electrical circuits important to safe shutdown cannot be accomplished via rated structural fire barriers, electrical raceway fire barrier assemblies have been installed on air drops, conduits, cable trays and junction boxes to meet 1-hour and 3-hour separation requirements. Where 1-hour fire resistive barriers are applied, automatic fire detection and suppression should also be installed. Electrical raceway fire barrier systems should be tested and qualified in accordance with applicable standards. The assemblies should be installed and maintained in accordance with the tested configuration. Regulatory Guide l.189 provides extensive criteria and discussion on the testing and qualification of electrical raceway fire barrier systems. Revision 4 - October 2003 31 Fire stops may also be applied to limit fire propagation along horizontal and vertical cable routing. The specific criteria for horizontal and vertical fire stop application is provided in Regulatory Guide 1.189. Licensees or applicants that rely on fire rated cables to meet NRC requirements for protection of safe shutdown systems or components from the effects of fire should request an exemption or deviation as appropriate. 8. Fire Protection of Areas Important to Safety Several areas within a nuclear power plant present unique hazards or design