ML21327A365

NRR E-mail Capture - Draft RAI for TSTF-577 LAR

ML21327A365
Person / Time
Site:	North Anna
Issue date:	11/23/2021
From:	Geoffrey Miller NRC/NRR/DORL/LPL2-1
To:	Erica Combs Dominion Energy Virginia
References
Download: ML21327A365 (4)

Text

From: Miller, Ed Sent: Tuesday, November 23, 2021 2:52 PM To: Erica.N.Combs@dominionenergy.com

Subject:

Draft RAI for TSTF-577 LAR Attachments: NAPS TSTF-577 LAR Draft RAI.docx

Erica, Attached is the NRC staffs draft RAI for the subject request. The questions are being transmitted to you to determine 1) If the question clearly conveys the NRC information needs, 2)

Whether the regulatory basis for the question is clear, and 3) If the information has already been provided in existing docketed correspondence. Additionally, review of the draft question will allow you to determine whether you are able to support a 30 day response time. After youve had a chance to review, please let me know if you would like to have a clarification call. Thank you.

Ed Miller (301) 415-2481

Hearing Identifier: NRR_DRMA Email Number: 1429 Mail Envelope Properties (SA1PR09MB7487704B36CF7F7F26AB1213E9609)

Subject:

Draft RAI for TSTF-577 LAR Sent Date: 11/23/2021 2:51:44 PM Received Date: 11/23/2021 2:51:00 PM From: Miller, Ed Created By: Ed.Miller@nrc.gov Recipients:

"Erica.N.Combs@dominionenergy.com" <Erica.N.Combs@dominionenergy.com>

Tracking Status: None Post Office: SA1PR09MB7487.namprd09.prod.outlook.com Files Size Date & Time MESSAGE 630 11/23/2021 2:51:00 PM NAPS TSTF-577 LAR Draft RAI.docx 44432 Options Priority: Normal Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:

DRAFT DRAFT REQUEST FOR ADDITIONAL INFORMATION LICENSE AMENDMENT REQUEST VIRGINIA ELECTRIC AND POWER COMPANY (DOMINION ENERGY VIRGINIA)

NORTH ANNA POWER STATION UNITS 1 AND 2 DOCKET NOS. 50-338 AND 50-339 By letter dated September 9, 2021 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML21252A514), Virginia Electric and Power Company (the licensee) submitted a license amendment request (LAR) for Nuclear Regulatory Commission (NRC) approval for an amendment to the facility operating license for the North Anna Power Station, Units 1 and 2. The licensee requested that the NRC process the proposed amendment under the Consolidated Line Item Improvement Process (CLIIP). The proposed changes would revise the Steam Generator (SG) Program and the Steam Generator Tube Inspection Report technical specifications (TSs) based on Technical Specifications Task Force (TSTF) Traveler TSTF-577, Revision 1, Revised Frequencies for Steam Generator Tube Inspections (TSTF-577) (ADAMS Accession No. ML21060B434), and the associated NRC staff safety evaluation (SE) TSTF-577 (ADAMS Accession No. ML21098A188).

The tubes within an SG function as an integral part of the reactor coolant pressure boundary and, in addition, isolate fission products in the primary coolant from the secondary coolant and the environment. SG tube integrity means that the tubes are capable of performing this safety function in accordance with the plant design and licensing basis.

North Anna Power Station has two Units. Both Unit 1 and Unit 2 SGs have Alloy 690 thermally treated (Alloy 690TT) tubes.

The NRC staff has determined that additional information is needed to complete its review, as described below.

Regulatory Basis The regulation in Title 10 of the Code of Federal Regulations (10 CFR), Section 50.36(c)(5),

Administrative Controls, states in part, that [a]dministrative 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. All pressurized water reactors have TSs according to 10 CFR 50.36 that include a SG Program with specific criteria for the structural and leakage integrity, repair, and inspection of SG tubes. At North Anna Power Station Units 1 and 2, programs established by the licensee, including the SG Program, are listed in the administrative controls section of the TS to operate the facility in a safe manner.

Background

As noted above, on September 9, 2021, the licensee submitted the application described above.

Based on the submittal, the NRC identified issues that are not consistent with traveler TSTF-577 adoption.

Draft Request for Additional Information To complete its evaluation of whether the proposed TS changes meet the SG Program requirements described above and are consistent with the adoption of TSTF-577, the NRC staff notes the following discrepancies associated with TS 5.6.7, Steam Generator Tube Inspection Report, as compared to the model changes

1. item a. ends with a semicolon versus a comma

2. item d. is missing the preceding forward-looking For all corrections, provide new Attachments for the affected TS pages for the NRC staff to review. For those items that are not corrected to be consistent with traveler TSTF-577, please address as a variation (i.e., changes that were not part of the approved traveler).