ML20198D310

Accepts Proposed ILRT Test Schedule of Performing Next ILRT During Refueling Outage VII

ML20198D310
Person / Time
Site:	Wolf Creek
Issue date:	05/04/1992
From:	Black S Office of Nuclear Reactor Regulation
To:	Withers B WOLF CREEK NUCLEAR OPERATING CORP.
References
TAC-M82980, NUDOCS 9205200086
Download: ML20198D310 (2)

Text

{l May 4, 1992 4

. Docket No. 50-4B2 Mr. Bart D. Withers President and Chief Executive Officer Wolf Creek Nuclear Operating Corporation Post Office Box 411 Burlington, Kansas 66B39

SUBJECT:

WOLF CREEK GENERATING STATION - SCHEDULE FOR PERFORMING CONTAINMENT ~

INTEGRATED LEAK RATE TESTING (TAC N0, M82980)

Licensee Event Report 9)-020-01 w s submitted on January 6, 1992, and included a request for NRC review and approval of the testing schedule for Type A containment Integrated Leak Rate Tests (ILRT) in accordance with Technical Specification 4.6.1.2(b) and 10 CFR 50 Appendix J, Section Ill. A.6.(a).

These requirements were made necessary due to Wolf Creek exceeding the allowable leakage value for the "as-found" condition during the ILRT performed during Refueling Outage V.

The majority of the containment leakage was discovered to be from isolation valves associated with the Essential Service Water (ESW) system which were found to have experienced erosion / corrosion of the valve disks.. Following repair of the valves, the leakage rate from the associated penetration was measured to be a small percentage of the allowable value and

.the integrated leak rate was computed to be well below the allowable value.

Since the 'cause of the excessive leakage has been identified and repaired and the leakage from sources other than the affected ESW valves was found to be acceptable, the staff approves the proposed ILRT test schedule of performing the next ILRT during Refueling Outage VII.

Sincerely, Original Signed By 3h 1 p o g V Q' Q h Suzanne C. Black, Director o

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2-Mr. Bart D. Withers

-cc Jay Silberg, Esq.

Mr. Otto Maynard Shaw, Pittman, Potts & Trowbridge Director Plant Operations 2300 N Street, NW Wolf Creek Nuclear Operating Corporation Washington,_D.C.

20037 P. O. Box 411 Burlington, Kansas 66839 Mr, Chris R. Rogers, P.E.

Manager, Electric Department Regional Administrator, Region IV Public Service Commission U.S. Nuclear Regulatory Commission P. O. Box 360 611 Ryan Ple'= Drive, Suite 1000 Jefferson City, Missouri 65102 Arlington, le <as 76011 Regional Administrator, Region 111 Mr. Steven G. W'deman U.S. Nuclear Regulatory Commission Supervisor Licensing 799 Roosevelt Road Wolf Creek Nuclear Operating Corporation Glen Ellyn, Illinois 60137 P. O. Box 41)

Burlingtor., Kansas 66839 Senior Resident Inspector V.S. Nuclear Regulatory Commission Robert Lye, General Council P. O. Box 311 Kansas Department of Health Burlington, K:nsas 66839 and. Environment LS0B, 9th Floor Mr. Robert Elliot, Chief Engineer 900 SW Jackson Utilities Division Topeka, Kansas 66612 Kansas Corporation Commission 1500 51, Arrowhead Road Topeka, Kansas 66604-4027 Office of the Governor State of Kansas Topeka, Kansas 66612 Attorney Genera; lit Floor - The Statehouse Topeka, Kansas 66612 Chairman, Coffey County Commission

-Coffey County Courthouse Burlington, Kansas 66839 Mr. Gerald Allen Public Health Physicist Bureau of Environmental Health Services Division of Health

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