ML20126M272

Forwards SE Granting Relief from ISI Post Repair Hydrostatic Test Schedule Requirements

ML20126M272
Person / Time
Site:	Three Mile Island
Issue date:	01/05/1993
From:	Stolz J Office of Nuclear Reactor Regulation
To:	Broughton T GENERAL PUBLIC UTILITIES CORP.
Shared Package
ML20126M277	List: ML20126M272 ML20126M286
References
TAC-M84761, NUDOCS 9301080258
Download: ML20126M272 (3)

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{ i WA$mNG10N, D C. 70t 55 k...../ January 5, 1993 Docket No. 50-289 Mr. T. Gary Broughton, Vice President and Director - 1MI-l GPU Nuclear Corporation Post Office Box 480 Middletown, Pennsylvania 17057

SUBJECT:

THREE MILE ISLAND UNIT 1 - REllEF FROM INSERVICE INSPECTION POST REPAIR liYDR0 STATIC TEST SCHEDULE REQUIREMENTS (TAC NO. M84761)

By letter dated October 9, 1992, GPU Nuclear Corporation (GPUN) submitted a request for relief from the schedule requirements of the Inservice inspection (ISI) program as it applies to hydrostatic testing of the Once Through Steam Generator (0150) secondary side. The request was made in accordance with 10 CFR 50.55a(g)(5) on the basis that the testing specified in the ASME Code,-

Section XI has been determined to be impractical at Three Mile Island Nuclear Station, Unit 1 (THI-1). Specifically, your letter requested that the subject testing be deferred to the llR refueling outage scheduled for September 1995.

GPUN's justification for deferring this test included an assessment that alternative nondestructive testing (visual leak testing at pressures lower than hydrostatic test pressure and volumetric / surface weld examinations) has been or will be performed on the welds of interest, that no safety or quality benefit would result from this test, and that there is a likelihood that the requirement for this test will be deleted by the ASME and the NRC in the near future.

The staff has reviewed your request for relief and the supporting justification. The cited regulation (10 CFR 50.55a(g)(5)) requires a determination by the licensee that a Code requirement is impractical for that facility and 10 CFR 50.55a(g)(6) requires the Commission to evaluate such determinations. The justification provided by GPUN demonstrates the burden that would result from performing a hydrostatic test of the OTSG secondary system and associated piping and valves. The staff has concluded that GPUN's request for deferral of the test is justified in recognition of the proposed alternative testing and therefore agrees with the request. We have determined that the Section XI Code requirement for this test is impractical to perform at TMI-l and we have granted schedular relief from that requirement. The NRC staff has determined that granting relief pursuant to 10 CFR 50.55a(g)(6)(i) is authorized by law and will ne endanger life, property, or the common defense and security and is oth s wise in the public interest giving due consideration to the burden upon GPUN that could result if the subject ASME Code requirement were imposed on the facility.

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fir.1. Gary Broughton The staff's evaluation and conclusions are contained in the enclosed Safety Evaluation.

Sincerely, Original signed by John F. Stolz, Director Project Directorate 1-4 Division of Reactor Projects - 1/11 Office of Nuclear Reactor Regulation

Enclosure:

Safety Evaluation cc w/ enclosure:

See next page Distribution:

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Mr. T. Gary Broughton Three Mile Island Nuclear Station, CPU Nuclear Corporation Unit No. I cc:

Michael Ross francis 1. Young 0&M Director, THI-l Senior Resident inspector (1MI-1)

GPU Huclear Corporation U.S. Nuclear Regulatory Commission Post Office Box 480 Post Office Box 311 Middletown, Pennsylvania 17057 Middletown, Pennsylvania 17057 Michael Laggart Regional Administrator, Region 1 Manager, Licensing U.S. Nuclear Regulatory Commission GPU Nuclear Corporation 475 Allendale Road 100 Interpace Parkway King of Prussia, Pennsylvania 19406 Parsippany, New Jersey 07054 Robert B. Borsum Robert E. Rogan B&W Nuclear Technologies TMI Licensing Director Suite 525 GPU Nuclear Corporation 1700 Rockville Pike Post Office Box 480 Rockville, Maryland 20852 Middletown, Pennsylvania 17057 Ernest L. Blake, Jr., Esquire William Dornsife, Acting Director Shaw, Pittman, Potts & Trowbridge Bureau of Radiation Protection 2300 N Street, NW. Pennsylvania Department of Washington, DC 20037 Environmental Resources Post Office Box 2063 Chairman liarrisburg, Pennsylvania 17120 Board of County Commissioners of Dauphin County 4 Dauphin County Courthouse llarrisburg, Pennsylvania 17120 Chairman Board of Supervisors of Londonderry Township R.D. #1, Geyers Church Road Middletown, Pennsylvania 17057

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