Document: NUREG-0800
Document ID: 757f66f9-1dd5-4125-9970-089087134ad9
Document Type: srp
Title: FIRE PROTECTION PROGRAM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0905/ML090510170.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.5.1.1
CFR Part: 
CFR Title: 

Content:
be maintained in safe shutdown. 8. Alternative Designs and Non-Applicable Acceptance Criteria The new reactor designs that have been reviewed by the NRC have proposed FPP approaches for specific areas of the plant that are not in accordance with the acceptance criteria in RG 1.189. In addition, some of the acceptance criteria in RG 1.189 may not be applicable to some reactor designs. The following are examples of alternative designs that have been accepted by the NRC and plant design features for which the acceptance criteria do not apply. These are examples and may not include all cases. The reviewer should determine the applicability of the acceptance criteria and the acceptability of any deviations for plant-specific conditions. 8.1 Alternative Designs a. At least one new reactor design has been certified by the NRC without meeting the guidance in RG 1.189, Regulatory Position 6.1.2.2, to provide detection in control room cabinets and consoles. The acceptance of this approach was based on the low combustible loading in these cabinets and on the continuous occupancy of the control room, which allows rapid detection and response to a fire in the control room. Acceptance of a similar alternative design for other new reactor designs should be based on the fire hazards analysis. b. At least one new reactor design has been certified by the NRC without meeting the guidance in RG 1.189, Regulatory Position 6.1.2.1, to provide area automatic fire suppression for control room under-floor areas and ceiling areas. The acceptance of this approach was based on the low combustible loading in these areas and on the continuous occupancy of the control room, which allows rapid detection and response to a fire in the control room. Acceptance of a similar alternative design for other new reactor designs should be based on the fire hazards analysis. c. At least one new reactor design has been certified by the NRC without meeting the guidance in RG 1.189, Regulatory Position 6.1.2, to