ML25322A305
| ML25322A305 | |
| Person / Time | |
|---|---|
| Site: | Grand Gulf, Arkansas Nuclear, River Bend, Waterford  |
| Issue date: | 11/18/2025 |
| From: | Michael Mahoney NRC/NRR/DORL/LPL4 |
| To: | Mahan C Entergy Services |
| Mahoney, M | |
| References | |
| EPID L-2025-LLA-0077, TSTF -596 | |
| Download: ML25322A305 (1) | |
Text
From:
Michael Mahoney To:
Mahan, Cecil Cc:
Couture III, Philip
Subject:
Entergy Fleet - Request for Additional Information - TSTF -596 LAR (L-2025-LLA-0077)
Date:
Tuesday, November 18, 2025 11:43:15 AM Attachments:
image001.png RAIs - Entergy Fleet TSTF-596.docx Hi Howard, By letter CNRO2025-00003, dated April 24, 2025 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML25119A223).Entergy Operations, Inc.
(Entergy) requested adoption of TSTF-596, "Expand the Applicability of the Surveillance Frequency Control Program (SFCP)"which is an approved change to the Standard Technical Specifications (STS), into the Arkansas Nuclear One, Units 1 and 2, Grand Gulf Nuclear Station, Unit 1, River Bend Station, Unit 1, and Waterford Steam Electric Station, Unit 3 Technical Specifications (TSs). TSTF-596 expands the applicability of the SFCP to include other periodic testing frequencies in TSs.
The U.S. Nuclear Regulatory Commission(NRC) staff is reviewing your submittal and has identified areas where additional information is needed to complete its review.
As discussed, response to the attached RAIs is requested no later than 30 business days from todays date.
The NRC staff considers that timely responses to RAIs help ensure sufficient time is available for staff review and contribute toward the NRCs goal of efficient and effective use of staff resources. If circumstances result in the need to revise the requested response date, please contact me.
Once this email is added to ADAMS, I will provide the accession number.
Thanks Mike Mahoney Project Manager, LPL2-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Desk: (301)-415-3867 Mobile: (301)-250-0450 Email: Michael.Mahoney@nrc.gov
1 REQUEST FOR ADDITIONAL INFORMATION OFFICE OF NUCLEAR REACTOR REGULATION ENTERGY FLEET - ADOPT TSTF-596 ENTERGY NUCLEAR OPERATIONS, INC.
ARKANSAS NUCLEAR ONE, UNITS 1 AND 2 GRAND GULF NUCLEAR STATION, UNIT 1 RIVER BEND STATION, UNIT 1 WATERFORD, UNIT 3 DOCKET NOS. 05000313, 05000368, 05000416, 05000458, 05000382
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Background===
In letter dated April 24, 2025 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML25119A223).Entergy Operations, Inc. (Entergy) requested adoption of TSTF-596, "Expand the Applicability of the Surveillance Frequency Control Program (SFCP)" which is an approved change to the Standard Technical Specifications (STS), into the Arkansas Nuclear One, Units 1 and 2 (ANO-1 and ANO-2), Grand Gulf Nuclear Station, Unit 1, River Bend Station, Unit 1, and Waterford Steam Electric Station, Unit 3, Technical Specifications (TSs). TSTF-596 expands the applicability of the SFCP to include other periodic testing frequencies in TSs The NRC staff requires additional from the licensee to complete the review of the proposed changes. This request contains three requests for additional information (RAIs).
Regulatory Basis The regulation at Title 10 of the Code of Federal Regulations (CFR), Section 50.36(c)(3) requires that TSs include Surveillance Requirements (SRs). Per 10 CFR 50.36(c)(3), SRs are requirements relating to test, calibration, or inspection to assure that the necessary quality of systems and components is maintained, that facility operation will be within safety limits, and that the limiting conditions for operation will be met.
The regulation at 10 CFR 50.36(c)(5) requires administrative controls are the provisions relating to organization and management, procedures, recordkeeping, review and audit, and reporting necessary to assure operation of the facility in a safe manner.
The Commissions Final Policy Statement on Technical Specifications Improvements for Nuclear Power Reactors (58 FR 39132, dated July 22, 1993) explained that [e]ach [limiting condition for operation] LCO [limiting condition for operation], Action, and Surveillance Requirement should have supporting Bases. In addition, the Bases in part, for each SR should address the following question, [w]hy is this surveillance necessary at the specified frequency to assure that the system or component function is maintained, that facility operation will be within the Safety Limits, and that the LCO will be met?
RAI 1
For ANO-1, the LAR does not include periodic assessment for program 5.5.5.d Control Room Envelope Habitability Program (page 41). However, the TSTF-596 Traveler has periodic assessment of the CRE boundary under the Babcock & Wilcox STS program 5.5.17.dControl Room Envelope Habitability Program (page 179). ANO-1 is a Babcock & Wilcox design.
The NRC staff request the licensee to provide justification for not adopting periodic assessments and supporting bases to assure operation in a safe manner.
2
RAI 2
For Waterford Unit 3, the LAR proposes to add the text lift settings >2411 psia and < 2559 psia to the following surveillance requirements (SRs):
SRs 4.4.2.1 and 4.4.2.2 (page 115 and 116)
These SRs lift settings are different from the related LCOs (3.4.2.1/3.4.2.2) lift settings of 2500 psia +/- 3% (>2425, <2575).
The NRC staff have reviewed the LCOs and Bases document. The NRC staff request the licensee to provide a justification for the proposed SR lift settings and any supporting bases to assure the LCOs will be met.
RAI 3
ANO-2, the LAR does not include periodic assessment for program 6.5.12.d Control Room Envelope Habitability Program (page 62). However, the TSTF-596 Traveler has periodic assessment of the CRE boundary under the Combustion Engineering (CE) STS program 5.5.17.d Control Room Envelope Habitability Program (page 179). ANO-2 is an CE design.
The NRC staff request the licensee to provide justification for not adopting periodic assessments and supporting bases to assure operation in a safe manner.