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:
he 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, “Inservice Inspection Code Case Acceptability, ASME Section XI, Division 1” (Ref. 7), lists the ASME BPV Code, Section XI, 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 1.192, “Operation and Maintenance Code Case Acceptability, ASME OM Code” (Ref. 8), lists the ASME OM Code Cases that the NRC has approved for use as voluntary alternatives to the mandatory ASME OM Code provisions that are incorporated into 10 CFR 50.55a. • RG 1.136, “Design Limits, Loading Combinations, Materials, Construction, and Testing of Concrete Containments” (Ref. 9), endorses ASME BPV Code, Section III, Division 2, “Code for Concrete Containments,” and addresses the acceptance of ASME BPV Code, Section III, Division 2 Code Cases. • RG 1.87, Revision 2, “Acceptability of ASME Code, Section III, Division 5 High Temperature Reactors” (Ref. 10), endorses ASME BPV Code, Section III, Division 5, “High Temperature Reactors” and addresses the acceptance of ASME BPV Code, Section III, Division 5 Code Cases. Purpose of This Regulatory Guide The NRC issued this RG to provide information to applicants and licensees on those Code Cases that the NRC has determined not to be acceptable for use on a generic basis. A brief description of the basis for the determination is given with each Code Case. Applicants or licensees may submit a request to implement one or more of the Code Cases listed below through 10 CFR 50.55a(z), which permits the use of alternatives to the Code Case requirements referenced in 10 CFR 50.55a as long as the proposed alternatives result in an acceptable level of quality and safety. Applicants or licensees must submit a plant-specific request that