ML25190A546
| ML25190A546 | |
| Person / Time | |
|---|---|
| Site: | Cooper  |
| Issue date: | 07/08/2025 |
| From: | Dia K Nebraska Public Power District (NPPD) |
| To: | Office of Nuclear Reactor Regulation, Document Control Desk |
| References | |
| EPID L-2025-LLR-0028, N152025045 | |
| Download: ML25190A546 (1) | |
Text
N Nebraska Public Power District "Alwoy there whenyou need us" 10 CFR 50.55a N152025045 July 8, 2025 Attention: Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001
Subject:
Response to Request for Confirmatory lnformation Regarding Relief Request RP-01 (EPlD L-2025-LLR-0028)
Cooper Nuclear Station, Docket No. 50-298, Renewed License No. DPR-46
References:
- 1. Nebraska Public Power District letter to the U.s. Nuclear Regulatory Commission, NLS2025011, 'lnservice Testing Code of Record Interval Relief Requests for Pumps, Valves, and Snubbers,"dated March 4, 2025 (M125065A1 1 6)
- 2. U.S. Nuclear Regulatory Commission electronic mail to Nebraska Public Power District, 'cooper - Request for confirmatory Information RE: Relief Request IST ASME 2022 - RP-01 (EPID L-2025-LLR-0028)"dated June 20, 2025 ln Reference 1, Nebraska Public Power District (NPPD) submitted requests for relief from certain lnservice Testing (lST) code requirements for Cooper Nuclear Station pursuant to 10 CFR 50.55a. These requests are necessary to support the Code of Record IST interval which commences on March 1,2020.
ln Reference 2, the U.S. Nuclear Regulatory Commission issued a request for confirmatory information (RCl) and requested that NPPD respond by August 1,2025 The response to the RCI is attached.
This letter contains no regulatory commitments.
lf you have any questions or require additional information, please contact Linda Dewhirst, Regulatory Affairs and compliance Manager, at(402) B2s-5416.
Si alil Dia COOPER NUCLEAR STATION 72676 648AAve / P.O. Box 98 / Brownville, NE 68321 http://www.nppd.com Site Vice President
N1S2025045 Page 2 of 2 ldv
Attachment:
Response to Request for Confirmatory Information cc: Regional Administrator w/ attachment USNRC - Region lV Cooper Project Manager w/ attachment USNRC - NRR Plant Licensing Branch lV Senior Resident lnspector w/ attachment USNRC - CNS NPG Distribution w/ attachment CNS Records w/ attachment
N1S2025045 Attachment Page 1 of2 ATTACHMENT RESPONSE TO REQUEST FOR CONFIRMATORY INFORMATION lnservice Testing Code of Record lnterval Relief Requests for Pumps, Valves, and Snubbers Cooper Nuclear Station, Docket No. 50-298 NRC Backsround By letter dated March 4, 2025 (ML25065A116), Nebraska Public Power District (licensee) requested that the Nuclear Regulatory Commission (NRC) grant relief from certain lnseruice Testing (IST) code requirements for Cooper Nuclear Station (Cooper) pursuant to 10 CFR 50.55a. The relief requesfs perfa in to the American Society of Mechanical Engineers (ASME) Code for Operation and Maintenance (OM) of Nuclear Power Plants pump, valve, and snubber testing requirements needed for the next Code of Record (COR) IST interual, which commences on March 1, 2026, and will end on February 28,2050.
Request for Confirmation of lnformation 01 (RCl-011:
Alternative Reguesf RP-01, Secfion 5, "Proposed Alternative and Basis for lJse," sfafes that ASME OM Code Case OMN-32, "Alternative Requirements for Range and Accuracy of Pressure, Flow, and Differential Pressure lnstrumenfs Used in Pump lesf, "
Revision 1, is the basis for the alternative request. However, Secflon 5 a/so sfafes fhe following (emphasis underlined):
The analog instruments being used for the suction pressure and discharge pressure for the Group A or Group B fesfg as applicable, are designed and calibrated in the range for use at the expected reading to be measured or recorded during the test (e.9. reference value and applicable acceptance criteria). Therefore, all requirements of Code Case OMN-31, revision 1, have been met. The calibration data sheefs are available at CNS for inspection, as necessary.
The analog instruments being used are designed and calibrated in the range for use at the expected reading to be measured or recorded during the test (e.9.
reference value and applicable acceptance criteria). This relief reguesf is applicable for the flow instrument being used for all potential REC pump tests (i.e. Group A, Comprehensive, Baseline, and Preseruice Tests). Therefore, all requirements of Code Case OMN-31, revision 1, have been met. The calibration data sheets are available af CNS for inspection, as necessary.
NLS2025045 Attachment Page 2 of 2 ASME OM Code Case OMN-31, "Alternative to Allow Extension of ISTA-3120 lnseruice Examination and Test lnteruals From 10 Years to 12 Years," is not relevant to this alternative request. The NRC staff requesfs fhaf the licensee confirm that the code case used as the basis for Alternative Request RP-01 is Code Case OMN-32, Revision 1, and not Code Case OMN-31.
Nebraska Public Power District (NPPD) Resoonse NPPD confirms that the reference to Code Case OMN-31 is not relevant, was a typographical error, and that the basis for Alternative Request RP-01 is Code Case OMN-32, Revision 1.