Document: NUREG-0800
Document ID: b10297dd-9822-4243-8665-c41d92699ea5
Document Type: srp
Title: RISK-INFORMED, PERFORMANCE-BASED FIRE PROTECTION PROGRAM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0925/ML092590527.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.5.1.2
CFR Part: 
CFR Title: 

Content:
plants and plants with construction permits issued before July 1, 1976, and does not require seismically qualified standpipes and hose stations for those plants. Therefore, the requirement in Section 3.6.4 of NFPA 805 is not applicable to licensees with non-seismic standpipes and hose stations previously approved in accordance with Appendix A to BTP APCSB 9.5-1. III.2.2 Definition of Power Block The staff will review the LAR to determine which plant structures are identified as comprising the “power block.” The staff should verify that the licensee’s list of power block structures conforms to the definition of “power block” in the glossary of NFPA 805 and the guidance in RG 1.205. III.2.3 Electrical Raceway Fire Barrier Systems (e.g. Hemyc and MT) On April 10, 2006, the NRC issued GL 2006-03, “Potentially Non-Conforming Hemyc and MT Fire Barrier Configurations,” requiring licensees to provide information regarding the use of electrical raceway fire barriers, particularly Hemyc and MT, at their plants. If the licensee has not resolved the electrical raceway fire barrier issue prior to submittal of their RI/PB FPP LAR, the licensee must address the issue in the LAR. The staff will verify that the licensee has adequately addressed this issue, including having provided a justification for the use of any compensatory measures and proposed plant modifications. III.2.4 Existing Cables NFPA 805, Section 3.3.5.3 states that electrical cables shall meet a flame propagation test that is acceptable to the authority having jurisdiction. 10 CFR 50.48(c)(2)(v), which does not endorse the italicized exception in NFPA 805, Section 3.3.5.3, allows a flame retardant coating on the cables or an automatic fixed suppression system to provide an equivalent level of protection. The staff will review the LAR to verify that the requirements for existing cables are met. If the staff approves use of these alternatives, this approval should be explicitly documented in the