Document: NRC Regulatory Guide
Document ID: 7d480029-59df-44fe-9db8-c1c86566dac9
Document Type: regulatory_guide
Title: Operation and Maintenance Code Case Acceptability, ASME OM Code (Rev. 5)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2219/ML22196A063.pdf
Revision Date: 2023-05
Chapter: 
Section ID: RG-1.192
CFR Part: 
CFR Title: 

Content:
ure Relief/Safety Valves OMN-18 (2009 Edition) (2012 Edition) (2015 Edition) (2017 Edition) (2020 Edition) Alternate Testing Requirements for Pumps Testing Quarterly Within ±20% of Design Flow OMN-19 (2011 Addenda) (2012 Edition) (2015 Edition) (2017 Edition) (2020 Edition) Alternative Upper Limit for the Comprehensive Pump Test OMN-20 (2012 Edition) (2015 Edition) (2017 Edition) (2020 Edition) Inservice Test Frequency OMN-21 (2015 Edition) (2017 Edition) (2020 Edition) Alternative Requirements for Adjusting Hydraulic Parameters to Specified Reference Points OMN-22 [OMN-22 incorporated into 2022 Edition] OMN-23 (2020 Edition) Alternative Requirements for Testing Pressure Isolation Valves OMN-24 (2020 Edition) Alternative Requirements for Testing ASME Class 2 and 3 Pressure Relief Valves (For Relief Valves in a Group of One) DG-1407, Page 20 Code Case Number Table 3 OM Code Cases That Have Been Superseded by Revised OM Code Cases Title/Condition OMN-25 (2020 Edition) Alternative Requirements for Testing Appendix I Pressure Relief Valves OMN-26 (2020 Edition) Alternate Risk-Informed and Margin Based Rules for Inservice Testing of Motor Operated Valves OMN-27 (2020 Edition) Alternative Requirements for Testing Category A Valves (Non-PIV/CIV) DG-1407, Page 21 4. Annulled OM Code Cases ASME has annulled the OM Code Cases listed in Table 4. Table 4. Annulled OM Code Cases Code Case Number and Year Annulled Table 4 Annulled OM Code Cases OMN-2 2014 Thermal Relief Valve Code Case, OM Code 1995, Appendix I OMN-5 2014 Testing of Liquid Service Relief Valves Without Insulation OMN-14 2014 Alternative Rules for Valve Testing Operations and Maintenance, Appendix I: BWR CRD Rupture Disk Exclusion DG-1407, Page 22 D. IMPLEMENTATION The purpose of this section is to provide information to applicants and licensees regarding the NRC staff’s plans for using this regulatory guide. This regulatory guide lists the ASME OM Code Section IST Code Cases that the NRC has approved for use