Document: NRC Regulatory Guide
Document ID: a4944d20-ef6e-480b-a45d-14425bedd2e5
Document Type: regulatory_guide
Title: ASME Code Cases Not Approved for Use (Rev. 8)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2219/ML22196A065.pdf
Revision Date: 2023-05
Chapter: 
Section ID: RG-1.193
CFR Part: 
CFR Title: 

Content:
G does not approve the use of the ASME Code Cases listed herein. Applicability This RG applies to reactor licensees and applicants subject to 10 CFR Part 50, Section 50.55a, “Codes and standards.” Applicable Regulations • Title 10 of the Code of Federal Regulations (10 CFR), Part 50, “Domestic Licensing of Production and Utilization Facilities” (Ref. 1): o 10 CFR 50.55a(c) requires, in part, that components of the reactor coolant pressure boundary be designed, fabricated, erected, and tested in accordance with the requirements for Class 1 components of Section III, “Rules for Construction of Nuclear Power Plant Components,” of the ASME Boiler and Pressure Vessel (BPV) Code (Ref. 2) or equivalent quality standards. o 10 CFR 50.55a(f) requires, in part, that Class 1, 2, and 3 components and their supports meet the requirements of the ASME Operation and Maintenance Code (OM Code) (Ref. 3) or equivalent quality standards. o 10 CFR 50.55a(g) requires, in part, that Class 1, 2, and 3 metal containment (MC), and concrete containment (CC) components and their supports meet the requirements DG-1408, Page 2 of Section XI, “Rules for Inservice Inspection of Nuclear Power Plant Components,” of the ASME BPV Code (Ref. 4) or equivalent quality standards. • 10 CFR 52.79(a)(11) (Ref. 5) requires the final safety analysis report to include “a description of the program(s), and their implementation, necessary to ensure that the systems and components meet the requirements of the ASME Boiler and Pressure Vessel Code and the ASME Code for Operation and Maintenance of Nuclear Power Plants in accordance with 50.55a of this chapter.” Related Guidance • RG 1.84, “Design, Fabrication, and Materials Code Case Acceptability, ASME Section III” (Ref. 6), lists the ASME BPV Code, Section III, Code Cases, that the NRC has approved for use as voluntary alternatives to the mandatory ASME BPV Code provisions that are incorporated into 10 CFR 50.55a. • RG 1.147,