ML23144A087
| ML23144A087 | |
| Person / Time | |
|---|---|
| Issue date: | 05/24/2023 |
| From: | Thomas Scarbrough NRC/NRR/DEX/EMIB |
| To: | |
| References | |
| Download: ML23144A087 (2) | |
Text
ADAMS Accession No. ML23144A087 STATUS OF NRC ACTIVITIES OF POTENTIAL INTEREST TO OM STANDARDS COMMITTEE Thomas G. Scarbrough, Senior Mechanical Engineer Mechanical Engineering and Inservice Testing Branch Division of Engineering and External Hazards NRC Office of Nuclear Reactor Regulation ASME OM Code Committee Virtual Meeting in June 2023 10 CFR 50.55a Code Edition Rulemaking Title 10 of the Code of Federal Regulations (10 CFR) in Section 50.55a, Codes and standards, incorporates by reference specific editions and addenda of the American Society of Mechanical Engineers (ASME) Operation and Maintenance of Nuclear Power Plants, Division 1, OM Code:
Section IST (OM Code), and the ASME Boiler and Pressure Vessel Code (BPV Code), Sections III and XI.
On October 27, 2022, the NRC issued a final rulemaking to amend 10 CFR 50.55a to incorporate by reference the 2019 Edition to the ASME BPV Code,Section III, Division 1, and Section XI, Division 1, with conditions; and the 2020 Edition to Division 1 of the ASME OM Code, with conditions. See Federal Register Notice 87 FR 65128, dated October 27, 2022. Therefore, any IST programs updated 18 months after November 28, 2022, and later are required to use the 2020 Edition of the OM Code as incorporated by reference in 10 CFR 50.55a.
The NRC staff is initiating a proposed rulemaking to incorporate by reference the 2021 Edition of the ASME BPV Code, Division 1, Sections III and XI, and the 2022 Edition of the ASME OM Code, with conditions as appropriate. The NRC staff plans to issue the proposed rule for public comment in mid-2023.
10 CFR 50.55a Code Case Rulemaking In early 2022, the U.S. Nuclear Regulatory Commission (NRC) issued a final rulemaking incorporating by reference into 10 CFR 50.55a revised NRC regulatory guides (RGs) that address the acceptability of ASME Code Cases in the Federal Register on March 3, 2022 (87 FR 11934) with an effective date of April 4, 2022. In particular, Revision 4 of RG 1.192, Revision 39 of RG 1.84, and Revision 20 of RG 1.147 address the acceptability of ASME OM Code Cases published during the similar time period as the 2020 Edition of the ASME OM Code and available on the ASME Codes & Standards (C&S) Connect Website; and specific ASME BPV Code Cases. RG 1.192, Revision 4, accepts new ASME OM Code Cases OMN-22 through OMN-27 without conditions. Other ASME OM Code Cases remain the same in Revision 4 to RG 1.192 as the previous Revision 3 to RG 1.192.
On March 6, 2023 (88 FR 13717), the NRC issued a proposed rule to address the acceptability of recent ASME BPV Code Cases and OM Code Cases by updating the applicable RGs. The proposed rule also requested public comments on a possible extension of the Code of Record 1
(COR) update requirement in 10 CFR 50.55a from 10 years to 20 or 24 years for those licensees that are implementing (as their IST and Inservice Inspection (ISI) CORs) the 2020 Edition of the ASME OM Code and 2019 Edition of the ASME BPV Code, or later editions and addenda, as incorporated by reference in 10 CFR 50.55a. For a licensee implementing this recent Code edition or later edition as its IST/ISI Program COR, the rule proposes a 20-year or 24-year COR update interval requirement depending on whether the licensee is implementing a 10-year or 12-year OM Examination and Test interval and Section XI Inspection interval as applicable to the ASME OM and BPV Codes. For background information, see NRC Commission Paper SECY-21-0029 (March 15, 2021), Rulemaking Plan on Revision of Inservice Testing and Inservice Inspection Program Update Frequencies Required in 10 CFR 50.55a (Agencywide Documents Access and Management System (ADAMS) Accession No. ML No.ML20273A286); Staff Requirements Memorandum SRM-SECY-21-0029 (November 8, 2021) (Accession No.ML21312A490); and Commission Paper SECY-22-0075 (August 10, 2022), Staff Requirements SECY-21-0029 Inservice Testing and Inservice Inspection Program Rulemakings Update (Accession No.ML22124A178). Draft RG 1.192, Revision 5 (DG-1407) accepts new ASME OM Code Cases OMN-28 through OMN-30 without conditions, and OMN-31 with conditions. Based on a public request, the NRC extended the public comment period for the proposed rule to June 16, 2023.
Focused Engineering Inspections for Power-Operated Valves The NRC staff has completed the focused engineering inspections for power-operated valves (POVs) at nuclear power plants by implementing Inspection Procedure 71111.21N.02, Design-Basis Capability of Power-Operated Valves under 10 CFR 50.55a Requirements. These inspections evaluated POV capability as it relates to valve/actuator design and safety function, design-basis conditions, uncertainties applied, diagnostics, weak link evaluations, design-basis capability tests, and design-basis capability evaluations. The POV inspections focused on motor-operated valves (MOVs), air-operated valves, hydraulic-operated valves, solenoid-operated valves, and pyrotechnic-actuated (squib) valves. The selection process for the POV inspection sample included risk, historical performance, and various valve sizes, types, and manufacturers. The POV inspections commenced in early 2020 and were completed at the end of 2022. On May 6, 2021, the NRC issued Information Notice (IN) 2021-01, Lessons Learned from U.S. Nuclear Regulatory Commission Inspections of Design-Basis Capability of Power-Operated Valves at Nuclear Power Plants, based on lessons learned from the initial POV inspections. The NRC staff discussed lessons learned from POV inspections performed up to that time at a public meeting with the Boiling Water Reactor Owners Group (BWROG) on December 1, 2021 (Accession No. ML21334A168). The NRC staff discussed more recent POV inspection lessons learned during the IST Owners Group (ISTOG) meeting in December 2022 (Accession No. ML22333A728). The NRC staff discussed all of the lessons learned from the POV inspections at the MOV Users Group meeting in January 2023 (Accession No. ML23018A081). The NRC staff is preparing a supplement to IN 2021-01 to provide a summary of all of the lessons learned from the POV inspection program.
ASME-Related Generic Communications and Regulatory Guides No ASME-related generic communications or regulatory guides have been issued by the NRC since the last report (December 2022) to the ASME OM Standards Committee.
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