ML20195E750

Submits Proposal to Modify Licensee Commitments Re Sampling Functions of Pass,As Described in Section 18.2.3 of WCGS Usar.Rept Entitled, WCNOC Proposed PASS Functions Reduction & Rev 0 to Procedure EPP 01-2.4,encl

ML20195E750
Person / Time
Site:	Wolf Creek
Issue date:	11/10/1998
From:	Muench R WOLF CREEK NUCLEAR OPERATING CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20195E756	List: ML20195E750 ML20195E759 ML20195E767
References
ET-98-0079, ET-98-79, NUDOCS 9811190103
Download: ML20195E750 (4)

Text

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9 LF W4)UCLEAR OPERATING C N

CREEK NOV 101998 ET 98-0079 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Mail Station: P1-137 Washington, D. C. 20555

References:

1) Letter OG-98-108 dated October 26, 1998, from L. F. Liberatori Jr., Westinghouse Owners Group, to USNRC

2) Letter OG-96-098 dated November 22, 1996, from T. V. Greene, Westinghouse Owners Group, to USNRC

Subject:

Docket No. 50-482: Proposed Changes to Wolf Creek Generating Station Post-Accident Sampling System Commitments and Core Damage Assessment Guidance Gentlemen:

Wolf Creek Nuclear Operating Corporation (WCNOC) proposes to modify its commitments regarding sampling functions, of the Post Accident Sampling System (PASS). These commitments are described in the Wolf Creek Generating Station (WCGS) Updated Safety Analysis Report (USAR), Section 18.2.3, regarding NUREG-0737, " Clarification of TMI Action Plan Requirements," and Regulatory Guide 1.97, Rev. 2, " Instrumentation For Light Water Cooled Nuclear Power Plants to Assess Plant and Environs Conditions During and Following an Accident."

Specifically, WCNOC proposes to eliminate certain PASS sampling functions, and relax certain other PASS sampling functions, in accordance with WCAP-14 986,

" Westinghouse Owners Group Post Accident Sampling System Requirements: A Technical Basis." This WCAP was submitted to the NRC by the Westinghouse Owners Group (WOG) by Reference 1. Reference 1 also specified that any charges associated with the generic review of the WCAP be submitted to the WOG.

WCNOC is submitting this request as the lead plant for the WOG. Enclosure 1  ?

provides a description of the plant-specific changes being requested to WCNOC's PASS commitments, and the bases and justification for making these {

changes. WCNOC anticipates that making the proposed changes to our PASS system will result in a cost savings of approximately S2,000,000 just in

-equipment replacement / maintenance costs alone over the next several years.

This letter also transmits a proposed revision to the WCGS Core Damage Assessment Guidance (CDAG). This revision is based on the WOG's CDAG of 1996 M described in WCAP-14 696, " Westinghouse Owner's Group Core Damage Assessment Guidance." This WCAP was submitted to the NRC by Reference 2. Reference 2 h

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aluo specified that any charges associated with the generic review of the WCAP 9811190103 981110 PDR ADDCK 05000402-P PDR

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ET 98-0079

• Page 2 of 2 be submitted to the WOG. This prorased change does not constitute a reduction in the commitment to have core damage assessment guidance, but a change to the I basis for the methodology. Therefore, NRC approval is required prior to implementation.

WCNOC is also submitting this request as the lead plant for the WOG.

Enclosure 2 provides a discussion and evaluation of the proposed plant-specific changes to the WCNOC CDAG. Enclosure 3 provides the full text of the proposed revision to the WCNOC CDAG.

The attachment to this letter identifies those actions committed to by WCNOC in this document.

If you have any questions concerning this matter, please contact me at (316) 364-8831, extension 4034, or Mr. Michael J. Angus at extension 4077.

Very truly yours, Richard . Muench RAM /dlc Attachment Enclosures cc: W. D. Johnson (NRC), w/a, w/e E. W. Merschoff (NRC), w/a, w/e B. A. Smalldridge (NRC), w/a, w/e K. M. Thomas (NRC), w/a, w/e P. C. Wen (NRC), w/a, w/e

Y Attachment to ET 98-0079

, Page 1 of 2 l

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l ATTACHMENT List of Commitments l

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i Attachmenc to ET 98-0079 o Page 2 o'; 2 LIST OF COMMITMENTS The following table identifies those actions committed to by Wolf Creek Nuclear Operating Corporation (WCNOC) in this document. Any other statements in this submittal are provided for information purposes and are not considered to De commitments. Please direct questions regarding these commitments to Mr.

Michael J. Angus, Manager Licensing and Corrective Action at Wolf Creek Generating Station, (316) 364-8831, extension 4077

};OMMITMENT Due Date/ Event None