1CAN092201, Supplement to Request for Relief from American Society of Mechanical Engineers Section XI Volumetric Examination Requirements - Fifth 10-Year Interval, First Period

Supplement to Request for Relief from American Society of Mechanical EngineersSection XI Volumetric Examination Requirements - Fifth 10-Year Interval, First Period

ML22251A091
Person / Time
Site:	Arkansas Nuclear
Issue date:	09/08/2022
From:	Couture P Entergy Operations
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
1CAN092201
Download: ML22251A091 (2)

Text

Phil Couture Senior Manager Fleet Regulatory Assurance - Licensing Tel 601-368-5102 1CAN092201 10 CFR 50.55a September 8, 2022 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555

Subject:

Supplement to Request for Relief from American Society of Mechanical EngineersSection XI Volumetric Examination Requirements -

Fifth 10-Year Interval, First Period Arkansas Nuclear One, Unit 1 NRC Docket No. 50-313 Renewed Facility Operating License No. DPR-51

Reference:

Entergy Operations, Inc. (Entergy) letter to the U. S. Nuclear Regulatory Commission (NRC), "Request for Relief from American Society of Mechanical EngineersSection XI Volumetric Examinations Requirements - Fifth 10-Year Interval, First Period", (1CAN082201) (ML22236A500), dated August 24, 2022 Entergy Operations, Inc. (Entergy) requested NRC approval of a Request for Relief for Arkansas Nuclear One, Unit 1 (ANO-1) via the reference letter. The request is associated with the requirements of the American Society of Mechanical Engineers (ASME), Boiler and Pressure Vessel Code,Section XI pertaining to volumetric examinations and ASME Code Case N-716-1. The purpose of this submittal is to supplement the information in the reference letter.

After making the submittal of the Request for Relief, Entergy identified that the information provided in the table for the cumulative effect to delta risk for all the subject welds, contained incorrect information. The table was provided in page 4 of 19 of the enclosure of the Request for Relief. The corrected table is provided below.

Entergy Operations, Inc., 1340 Echelon Parkway, Jackson, MS 39213

1CAN092201 Page 2 of 2 Total CDF Impact LERF Impact w/ POD w/o POD w/ POD w/o POD Source of Delta Risk Examined 5th interval periodic update

-9.86E-08 5.69E-09 -2.04E-08 4.74E-10 required by N-716 Not Examined Adjusted delta risk using the

-9.21E-08 9.32E-09 -1.91E-08 1.20E-09 periodic update delta risk Please use this supplemental information in your review of the request.

This has been discussed with the NRR Project Manager for ANO-1. It has also been entered into Entergys Corrective Action Program.

There are no new regulatory commitments made in this submittal.

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

Respectfully, Philip Digitally signed by Philip Couture Couture Date: 2022.09.08 07:10:58 -05'00' Phil Couture PC/rwc cc: NRC Region IV Regional Administrator NRC Senior Resident Inspector - Arkansas Nuclear One NRC Project Manager - Arkansas Nuclear One