ML18243A483

Electric Power Research Institute - Submittal of BWRVIP-319NP: BWR Vessel and Internals Project, Testing and Evaluation of the Hatch Unit 2 120 Degrees Surveillance Capsule

ML18243A483
Person / Time
Site:	Hatch, 99902016
Issue date:	08/29/2018
From:	Mcgehee A Electric Power Research Institute
To:	Document Control Desk, Office of Nuclear Reactor Regulation
Shared Package
ML18248A111	List: ML18243A483
References
2018-112
Download: ML18243A483 (2)

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ELECTRIC POWER RESEARCH INSTITUTE 2018-112 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.BWR Vessel & Internals Project (BWRVIP)

August 29, 2018 Document Control Desk U.S. Nuclear Regulatory Commission 11555 Rockville Pike '

Rockville, MD 20852 BWRVIP Docket No. 99902016

Subject:

BWRVIP-319NP: BWR Vessel and Internals Project, Testing and Evaluation of the Hatch Unit 2 120° Surveillance Capsule

References:

1. M. Markley to A. McGehee and J. Hutto, "Edwin I. Hatch Nuclear Plant, Unit No. 2 -Request for Extension of Date to Submit Reactor Vessel Surveillance Capsule Summary Technical Report (CAC No. MF9753; EPID L-2017-LLL-0011)," January 22, 2018.

Enclosed is one (1) paper copy of the report "BWRVIP-319NP: BWR Vessel and Internals Project, Testing and Evaluation of the Hatch Unit 2 120° Surveillance Capsule," EPRI Technical Report 3002013103, August 2018. This report is being transmitted to the NRC for information only.

This report describes testing and evaluation of the Hatch Unit 2 120° surveillance capsule. These results will be used to monitor embrittlement as part of the BWRVIP Integrated Surveillance Program (ISP).

• The weld material in the Hatch Unit 2 120° surveillance capsule is identified in BWRVIP-86, Revision 1-A, as representative for target materials for target weld materials in the Hatch Unit 2, Nine Mile Point Unit 1, and Oyster Creek reactor vessels.

However, the weld material in the Hatch Unit 2 120° is not'a heat-specific match to any of the target weld materials. Therefore, the surveillance data will not be used directly.

• The plate material in the Hatch Unit 2 120° surveillance capsule is identified in BWRVIP-86, Revision 1-A, as representative for target plate material for the Hatch Unit 2 reactor vessel only. The plate representative material in the 120°capsule is not a heat specific match to the target plate material in the Hatch Unit 2 reactor vessel. However, the representative material is a heat-specific match to another plate material in the Hatch Unit 2 reactor vessel and direct use will be made of the sul:"Veillance data. The Hatch Unit 2 P-T limit curves are contained in a Pressure-Temperature Limits Report (PTLR) and Together ... Shaping the Future of Electricity PALO ALTO OFFICE 3420 Hillview Avenue, Palo Alto, CA 9430,i-1395 USA* 650.855.2000

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the impact of the test results from the 120° surveillance capsule are currently being evaluated.

It should be noted that the BWRVIP previously requested an extension to the 10 CFR 50 Appendix H surveillance capsule testing reporting requirements and committed to providing the results of the Hatch Unit 2 120° surveillance capsule by August 31, 2018. That request was approved in Reference 1.

Please also note that the enclosed report is non-proprietary and is available to the public by request to EPRI.

If you have any questions on this subject please call Steve Richter (Energy Northwest, BWRVIP Assessment Committee Chairman) at 509-377-4703.

Sincerely, Andrew McGehee, EPRI, BWRVIP Chairman Tim Hanley, Exelon Corporation, BWRVIP Chairman c: D. Alley, NRC-NRR M. Kirk, NRC-RES D. Odell, Exelon Corp.

R. Carter, EPRI A. McGehee, EPRI