Document: NRC Regulatory Guide
Document ID: 8e45dce1-e1e7-4415-b1dd-7e2a610e545b
Document Type: regulatory_guide
Title: Fire Protection for Nuclear Power Plants (Rev. 4)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2023/ML20231A835.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.189
CFR Part: 
CFR Title: 

Content:
ngs, floors, walls, penetration seals, damper housing and doors), sprinklers, fire suppression system piping and valve casings, fire protection tanks and pump casings, and fire hydrant casings. Active components are defined as components that perform an intended function as described in 10 CFR 54.4, “Scope,” with moving parts or with a change in configuration or properties; as such, they are excluded from the AMR. For example, smoke/heat detectors are considered active components. Certain passive and long-lived components are considered consumables and therefore are not subject to an AMR. System filters, fire extinguishers, fire hoses, and air packs (within the scope of license renewal) may be excluded, on a plant-specific basis, from an AMR under 10 CFR 54.21(a)(1)(ii). These components are considered to be within the scope of license renewal and are typically replaced based on specific performance and condition monitoring activities that clearly establish a routine replacement practice based on a qualified life of the component. An AMR may exclude these components based on specific performance and condition monitoring activities provided that the applicant (1) identifies and lists in the license renewal application each component type subject to such replacement and (2) identifies the applicable monitoring and replacement programs that conform to appropriate standards (e.g., NFPA standards). For all components identified within the scope of license renewal and subject to an AMR, the licensee must demonstrate that the effect of aging on the intended function(s) will be adequately managed for the period of extended operation in accordance with 10 CFR 54.21(c)(1)(iii). For example, the intended function of fire suppression piping or the fire pump casing is to provide a pressure boundary. Programs to manage the aging effects of the pressure boundary can be existing plant programs, modified (or enhanced) programs, or new programs specifically created to address