1CAN042102, Relief Request ANO1-ISI-026

Relief Request ANO1-ISI-026

ML21119A374
Person / Time
Site:	Arkansas Nuclear
Issue date:	04/28/2021
From:	Couture P Entergy Operations
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
1CAN042102
Download: ML21119A374 (2)

Text

Entergy Operations, Inc.

1340 Echelon Parkway Jackson, MS 39213 Tel 601-368-5102 Phil Couture Senior Manager, Fleet Regulatory Assurance 10 CFR 50.55a(g)(6)(ii)(D) 1CAN042102 April 28, 2021 ATTN: Document Control Desk U. S. Nuclear Regulatory Commission Washington, DC 20555-0001

Subject:

Relief Request ANO1-ISI-026 Arkansas Nuclear One, Unit 1 NRC Docket No. 50-313 Renewed Facility Operating License No. DPR-51

References:

1. U.S. Nuclear Regulatory Commission (NRC) letter to Entergy Operations, Inc. (Entergy), "Arkansas Nuclear One, Unit 1 - Request for Alternative ANO1-ISI-024 from Volumetric/Surface Examination Frequency Requirements of the American Society of Mechanical Engineers Code Case N-729-1 (TAC NO. MF4022)," (1CNA121404) (ML14330A207),

dated December 23, 2014.

2. NRC letter to Entergy, "Arkansas Nuclear One, Unit 1 - Request for Alternative ANO1-ISI-026 from Volumetric/Surface Examination Frequency Requirements of the American Society of Mechanical Engineers Code Case N-729-1 (CAC NO. MF8007)," (1CNA021701)

(ML17018A283), dated February 13, 2017.

The American Society of Mechanical Engineers (ASME)Section XI Code Case N-729-1, "Alternative Examination Requirements for PWR Reactor Vessel Upper Heads With Nozzles Having Pressure-Retaining Partial Penetration Welds," established a frequency of 10 years for the volumetric examination of the reactor vessel upper head nozzles. Entergy Operations, Inc.

(Entergy) previously submitted two relief requests to extend the frequency for this examination at Arkansas Nuclear One, Unit 1 (ANO-1) to approximately 15.5 years. The NRC approved both extensions (References 1 and 2).

Subsequent to the approval to extend this frequency, the NRC revised 10 CFR 50.55a(g)(6)(ii)(D) to require implementation of Revision 6 of the code case (N-729-6).

This section of the regulation also stipulates that all previous NRC-approved alternatives from

1CAN042102 Page 2 of 2 the requirements of paragraph (g)(6)(ii)(D) remain valid Entergy has updated the current ANO-1 in-service inspection program plan to include the requirements of Code Case N-729-6.

The purpose of this letter is to notify the NRC that Entergy is no longer using ANO-1 relief request ANO1-ISI-026. ANO-1 will comply with the requirements of Code Case N-729-6, as conditioned by 10 CFR 50.55a(g)(6)(ii)(D). This letter is provided for information only and no response is requested from the NRC.

This letter contains no new regulatory commitments.

If there are any questions or if additional information is needed, please contact Riley Keele, Manager, Regulatory Assurance, at 479-858-7826.

Respectfully, Digitally signed Philip by Philip Couture Date: 2021.04.28 Couture 18:45:00 -05'00' PC/rwc cc: NRC Region IV Regional Administrator NRC Senior Resident Inspector - Arkansas Nuclear One NRC Project Manager - Arkansas Nuclear One Designated State Official Arkansas