PNP 2012-014, Commitment Revision Letter

Commitment Revision Letter

ML12033A037
Person / Time
Site:	Palisades
Issue date:	02/01/2012
From:	Vitale A Entergy Nuclear Operations
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
PNP 2012-014
Download: ML12033A037 (2)

Text

,.

~ Entergy Entergy Nuclear Operations, Inc.

Palisades Nuclear Plant 27780 Blue Star Memorial Highway Covert, MI 49043 Tel 269 764 2000 Anthony J. Vitale Site Vice President PNP 2012-014 February 1, 2012 U. S. Nuclear Regulatory Commission ATIN: Document Control Desk Washington, DC 20555-0001

SUBJECT:

Commitment Revision Letter Palisades Nuclear Plant Docket 50-255 License No. DPR-20

References:

1. Entergy Nuclear Operations, Inc. letter dated December 20,2010, Updated Palisades Reactor Vessel Pressurized Thermal Shock Evaluation (Accession No. ML110060692)

2. NRC letter dated December 7,2011, Updated Reactor Pressure Vessel Pressurized Thermal Shock Evaluation for Palisades Nuclear Plant (TAC No. ME5263), (Accession No. ML112870050)

Dear Sir or Madam:

By letter dated December 20, 2010, Entergy Nuclear Operations, Inc. (ENO) submitted an updated Palisades reactor vessel pressurized thermal shock (PTS) evaluation (Reference 1). The PTS evaluation concluded that limiting welds would not reach the 10 CFR 50.61 PTS screening criterion limit until April 2017. The updated reactor vessel PTS evaluation was approved by the NRC in a letter dated December 7,2011 (Reference 2).

In the December 20, 2010 letter, ENO committed to perform a volumetric inspection of the reactor vessel beltline region welds during the 2012 refueling outage. ENO also committed to submit a revised PTS evaluation under 10 CFR 50.61 a, including an evaluation of near-surface flaws from the volumetric examination, no less than three years before reactor vessel limiting axial welds are projected to reach the 10 CFR 50.61 PTS screening criterion limit.

ENO now plans to perform the volumetric inspection of the reactor vessel beltline region welds during the 2013 refueling outage. Performing the volumetric inspection during the 2013 refueling outage will support submittal of the revised PTS evaluation under 10 CFR 50.61 a at least three years prior to reaching the PTS screening criterion limit.

Document Control Desk PNP 2012-014 Page 2 Summary of Commitments This letter contains no new commitments and one revision to existing commitments.

Commitment made by letter of December 20, 2010:

Entergy Nuclear Operations, Inc. (ENO) will perform a volumetric inspection of the reactor vessel beltline region welds during the 2012 refueling outage.

Revised commitment:

Entergy Nuclear Operations, Inc. (ENO) will perform a volumetric inspection of the reactor vessel beltline region welds during the 2013 refueling outage.

Sincerely, ajv/jse cc: Administrator, Region III, USNRC Project Manager, Palisades, USNRC Resident Inspector, Palisades, USNRC