ML20247C638

Informs of Implementation Schedule of NRC Bulletin 88-011, Item 1.b, Pressurizer Surge Line Thermal Stratification. Mutually Agreed Upon Between NRC & Westinghouse Owners Group During 890411 Meeting

ML20247C638
Person / Time
Site:	Wolf Creek
Issue date:	05/16/1989
From:	Pickett D Office of Nuclear Reactor Regulation
To:	Withers B WOLF CREEK NUCLEAR OPERATING CORP.
References
IEB-88-011, IEB-88-11, TAC-72184, NUDOCS 8905250002
Download: ML20247C638 (4)

Text

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(.,....f' May 16, 1989 Docket No. 50-482. i

. Mr.IBart D. Withers

, President and Chief Executive Officer Wolf' Creek Nuclear Operating Corporation Post Office Box 411 l- Burlingten, unsas 66639 ')

SUBJECT:

SCHEDULAR RELIEF REQUEST RELATED W JRC BULLETIN 88-11

" PRESSURIZER SURGE LINE THERMAL STRATIFICATION", ITEM 1.b i< (TAC NO. 72184)

The purpose of this letter is to inform you of the implementation schedule for Item 1.b of NRC Bulletin 88-11 " Pressurizer Surge Line Thermal Stratification" that was mutually a Owners Group (WOG) during greed upon an April 11,between the NRC staff and the Westinghouse 1989 meeting.

By letter dated March 3,1989, Wolf Creek Nuclear Operating Corporation proposed an alternate schedule for the completion of the bounding analysis required by Item 1=.b of NRC Bulletin 88-11 regarding the design adequacy of the pressurizer surge line taking into account the effects of thermal stratification. Your proposed schedule for completion of Item 1.b (two years from the de.te of the Bulletin) was consistent with the alternate schedule proposed by the Westinghouse Owners Group (W0G) program.

DEring an April II,1989 meeting between the staff and the WOG, the staff

. expressed its opinion that the alternate schedule.as originally proposed by the WOG was unacceptable.. Based upon additional discussion, the WOG agreed to

. notify its membership that licensees of plants in. operation ever 10 years should, by the end of May 1989, complete and have available for NRC audit, their bounding analysis as related to Item 1.b of the Bulletin, and submit to theNRC,aJustificationforContinuedOperation(JCO)intheeventtheresults of the bounding analysis do not confirm the adequacy of the pressurizer surge 1 line for the design life of the plant. Licensees of plants in operation less thar.10 years would be notified that they were required to complete the required actions of Item 1.b within the originally stated period (one year from receipt oftheBulletin). The staff found these proposals to be acceptable.

It is our understandir.g that the WOG will provide you with a " generic" beunding-analysis, to which your plant specific variables (e.g., seismic and thermal loadings) will need to be aoded and incorporated. Your analysis should assess all aspects of thermal stratification and thermal striping, including bounding evaluations on stresses and fatigue, based on currently available information.

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0 8905250002 890516 PDR ADOCK 05000482

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May 16, 1989 l Mr. Bart D. Withers Based upon you participation in the WOG program regarding this issue and absent any other justification, your proposed alternate schedule of completing Item 1.b is not approved. It is our expectation that your efforts will be accelerated to meet the completion dates as cortmitted to by the WOG.

Sincerely,

/s/

Douglas V. Pickett, Project Manager  ;

Project Directorate - IV Division of Reactor Projects - III, IV, V and Special Projects Office of Nuclear Reactor Regulation cc: See-next page DISTRIBUTION Docket File NRC PDR Local PDR PD4 Reading G. Ilolahan L. Rubenstein F. Hebdon P. Noonan D. Pickett OGC-Rockville E. Jordan B. Grimes T. Chan ACRS(10)

PD4 Plant File DOCUMENT HAME: WC LTR TAC 72184 PD4/L Q ' PD4/Pd yQ PD4/Dd PNoonaw b. DPicke t:bj FHebd6ri 05//h'89 05/10/89 05/6/89 l

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Mr. Bart D. Withers Based upon you participation in the WOG program regarding this issue and absent any other justification, your proposed alternate schedule of completing Item 1.b is not approved. It is our expectation that your efforts will be accelerated to meet the completion dates as comitted to by the WOG.

Sincerely, Dgb__ V 9 Douglas V. Pickett,. Project Manager Project Directorate - IV Division of Reactor Projects - III,

. IV, V and Special Projects Office of Nuclear Reactor Regulation cc: See next page l

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• ,' Mr. Bart D. Withers )

, Wolf Creek Generating Station 1 Wolf Creek Nuclear Operating Corporation Unit No. 1

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-Jay.Silberg, Esq. Mr. Gerald Allen Shaw, Pittman, Pctts & Trowbridge Public Health Physicist 1800 M Street, NW Bureau of Air Quality & Radiation Washington, D.C. 20036 Control Division of Environment Chris R. Rogers, P.E. Kansas Department of Health Manager, Electric Department and Environment {

Public Service Commission Forbes Field Building 321 l i

P. O. Box 360 Topeka, Kansas - 66620 Jefferson City, Missouri 65102 Mr. Gary Boyer, Plant Manager Regional Administrator, Region III Wolf Creek Nuclear Operating Corp.

U.S. Nuclear Regulatory Comission P. O. Box 411 .

799 Roosevelt Road Burlington, Kansas 66839 Glen Ellyn, Illinois 60137 Regional Administrator, Region IV Senior Resident Inspector / Wolf Creek U.S. Nuclear Regulatory Comission c/o U. S. Nuclear Regulatory Comission Office of Executive Director P. O. Box 311 for Operations Burlington, Kansas 66839 611 Ryan Plaza Drive, Suite 1000 Mr. Robert Elliot, Chief Engineer

' Utilities Division . Mr. Otto Maynard, Manager Licensing Kansas Corporation Comission Wolf Creek Nuclear. Operating Corp.

4th Floor - State Office Building P. O. Box 411 Topeka, Kansa:; 66612-1571 Burlington, Kansas 66839 Office of the Governor State of Kansas Topeka, Kansas 66612 Attorney' General 1st Floor - The Statehouse Topeka, Kansas 66612 Chairman, Coffey County Comission Coffey County Courthouse Burlington, Kansas 66839

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