ML23335A115

NRR E-mail Capture - Prairie Island Units 1 and 2 - Request for Additional Information LAR to Revise TS 3.7.8 Required Actions

ML23335A115
Person / Time
Site:	Prairie Island
Issue date:	12/01/2023
From:	Ballard B NRC/NRR/DORL/LPL3
To:	Kivi J, Mark Miller Northern States Power Company, Minnesota
Ballard B
References
L-2023-LLA-0095
Download: ML23335A115 (4)

Text

From: Brent Ballard Sent: Friday, December 1, 2023 11:56 AM To: Miller, Michael A; Kivi, Jeffrey L Cc: Jeff Whited

Subject:

Prairie Island Units 1 and 2 - Request for Additional Information re: LAR to Revise TS 3.7.8 Required Actions (EPID L-2023-LLA-0095)

Attachments: FINAL- Prairie Island TS 3.7.8 LAR RAI.docx Good morning Mike and Jeff, By letter dated June 22, 2023, (Agencywide Documents Access and Management System (ADAMS)

Accession No. ML23173A069), Northern States Power Company, a Minnesota Corporation (NSPM),

doing business as Xcel Energy, submitted a license amendment request (LAR) to revise the Technical Specification (TS) 3.7.8, Cooling Water (CL) System, required actions for Condition B, and to remove the expired one-time allowance of Unit 1 and Unit 2 license amendments 237 and 225, respectively, at Prairie Island Nuclear Generating Plant.

The NRC staff has determined that additional information is needed to complete its review. Attached is the NRC staffs request for additional information (RAI).

A clarification call was held on December 1, 2023. The NRC staff is requesting a response to the RAI within 30 days of the date of this email, by December 31, 2023. Please let me know if you have any questions.

Thank you, Brent Brent Ballard Project Manager Plant Licensing Branch III Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission 301-415-0680

Hearing Identifier: NRR_DRMA Email Number: 2324 Mail Envelope Properties (SA9PR09MB51359B3B4940E157260A4093E081A)

Subject:

Prairie Island Units 1 and 2 - Request for Additional Information re LAR to Revise TS 3.7.8 Required Actions (EPID L-2023-LLA-0095)

Sent Date: 12/1/2023 11:56:05 AM Received Date: 12/1/2023 11:56:00 AM From: Brent Ballard Created By: Brent.Ballard@nrc.gov Recipients:

"Jeff Whited" <Jeffrey.Whited@nrc.gov>

Tracking Status: None "Miller, Michael A" <michael.a.miller@xcelenergy.com>

Tracking Status: None "Kivi, Jeffrey L" <jeffrey.l.kivi@xcelenergy.com>

Tracking Status: None Post Office: SA9PR09MB5135.namprd09.prod.outlook.com Files Size Date & Time MESSAGE 1195 12/1/2023 11:56:00 AM FINAL- Prairie Island TS 3.7.8 LAR RAI.docx 24232 Options Priority: Normal Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:

REQUEST FOR ADDITIONAL INFORMATION REGARDING LICENSE AMENDMENT REQUEST TO REVISE TECHNICAL SPECIFICATION 3.7.8, COOLING WATER (CL) SYSTEM PRAIRIE ISLAND NUCLEAR GENERATING PLANT, UNITS 1 AND 2 DOCKET NOS. 50-282 AND 50-306 By letter dated June 22, 2023, (Agencywide Documents Access and Management System (ADAMS) Accession No. ML23173A069), Northern States Power Company, a Minnesota Corporation (NSPM, the licensee), doing business as Xcel Energy, submitted a license amendment request (LAR) for the Prairie Island Nuclear Generating Plant, Units 1 and 2.

The proposed LAR would revise technical specification (TS) 3.7.8, Cooling Water (CL) System, Required Actions (RA) for Condition B and remove reference to an expired one-time allowance of license amendments 237 and 225 for Units 1 and 2, respectively. The NRC staff has reviewed the submittal and determined additional information is needed.

Regulatory Basis Title 10 of the Code of Federal Regulations (10 CFR), Section 50.36(c)(2) requires that technical specifications (TS) contain limiting conditions for operation (LCOs), which are the lowest functional capability or performance levels of equipment required for safe operation of the facility. When an LCO of a nuclear reactor is not met, the licensee shall shut down the reactor or follow any remedial action permitted by the TS until the LCO can be met. Typically, the TS require restoration of equipment in a timeframe commensurate with its safety significance, along with other engineering considerations. The regulation under 10 CFR 50.36(b) requires that TS be derived from the analyses and evaluation included in the safety analysis report, and amendments thereto.

Request for Additional Information The proposed RA B.1 states:

Verify opposite train CL pump OPERABLE.

Section 2.4, Description of the proposed change, of the LAR states in part:

Specifically, NSPM proposes to combine TS 3.7.8 Required Actions B.1 and B.2 into a single Required Action B.1 to verify operability of a safeguards pump on the opposite train The current RA A.1 states:

Restore one safeguards CL pump to OPERABLE status.

The proposed RA B.1 is not clear on which CL pumps are required to be operable as there are safeguards and non-safeguards CL pumps. Please address the discrepancy between Section

2.4 of the LAR and the proposed RA B.1 with respect to the CL pump. If either a safeguards or non-safeguards pump can be verified operable for proposed RA B.1, provide justification that a non-safeguards pump would satisfy the systems specified safety function with one supply header inoperable.