Document: NRC Regulatory Guide
Document ID: 60ac4a53-3f72-4e92-9ad2-39c736cf2135
Document Type: regulatory_guide
Title: Functional Specification for Active Valve Assemblies in Systems Important to Safety in Nuclear Power Plants
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML0037/ML003739979.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.148
CFR Part: 
CFR Title: 

Content:
ral Requirements," of Section III of the Code. c. The valve functional specification should meet the following requirements in the ASME Code: (I) It should be uniquely identified and referenced in the Design Specification in accordance with NCA-3252(a) (6) of Section III of the Code. (2) It should reference the applicable Design Specifi cation to permit identification of both documents. (3) It should meet those portions of the filing requirements of NCA-3256 that call for a copy toube filed at the location of the installation and made available to the enforcement authorities having jurisdiction over the plant installation. d. The functional specification prepared in accordance with N278.1-1975 for valve assemblies classified as Quality Group D in Regulatory Guide 1.26 should be cross-referenced with the document that serves as a "complete basis for construction" (see Regulatory Position L.b of this guide). e. When the Valve Design Specification for ASME Code Class 1, 2, and 3 valve assemblies requires use of ASME Code Cases such as N-62-2, the functional specification should consider this aspect, and usage should be consistent with Regulatory Guide 1.84, "Design and Fabrication Code Case Acceptability, ASME Section III Division 1," and Regulatory Guide 1.85, "Materials Code Case Accept ability, ASME Section III Division L ." 2. Specific Considerations a. Section 3.1, "Valve Application Characteristics," should be supplemented by the following: (1) "Manually operated valves" (see Regulatory Position 1.a) as a separate item to the listing. (2) The functional specification should identify the relationship or correspondence between the "application characteristics" of the subject standard and the Valve Categories A, B, C, and D in IWV-2200 of Subsection IWV, "Inservice Testing of Valves in Nuclear Power Plants," of Section XI of the Code. b. Section 3.2, "Structural Requirements," should be supplemented by the following: (I) The interdependence and number of cycles, if