ML20084S190

Telecopy Ro:On 770217,info Received by Station Indicated That MAPLHGR Limit Curves Given by Tech Specs Shall Be Additionally Lowered.Reduction Resulted from Review of ECCS Analysis.Maplhgr Curves Lowered Effective 770217

ML20084S190
Person / Time
Site:	Quad Cities
Issue date:	02/17/1977
From:	Kalivianakis N COMMONWEALTH EDISON CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20084S193	List: ML20084S190 ML20084S204 ML20084S286 ML20084S339
References
NJK-77-71, NUDOCS 8306160212
Download: ML20084S190 (1)

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NJ K-77-71 g 3 -sff Telecopy: Region III, Attention: Mr. 4. Jackiw February 17, 1977 J. Keppler, Regional Director Office of inspection and Enforcement

- Region lli U. S. Nuclear Regulatory Comission 799 RooseveIt Road Glen Ellyn, Illinois 60137

Reference:

quad-Cities Nuclear Power Station, Units 1 and 2 Docket No. 50-254, DPR-29 and 50-265, DPR-30 Appendix A, Sections 3 5.1 and 6.6.8.1.h

Dear Mr. Keppler:

The purpose of this letter is to provide you with notification of a Reportable Occurrence as required by Technical Specification 6.6.B. I within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of the occurrence.

On February 17, 1977 inforrution received by the station indicated that the

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maximum average pianar linear heat generation rate (MAPLHGR) limit curves given by the Technical Specifications shall be additionally lowered. Pre-vious reductions in MAPLHGR limits were reported by Reportable Occurrence Report RO 50-254/76-38 dated Decee:ber 15, 1976 and update report dated January 17, 1977 This composite reduction has resulted from a review of the ECCS analysis performed to comply with 10 CFR 50 Appendix K.

Accordingly, the MAPLHGR curves presently used in the process computer calculations have been lowered ef fective February 17, 1977 This occurrence was discussed at quad-Cities Station with Mr. N. Jackiw of your office on February 17, 1977. Further information will be provided by an update report for Reportable Occurrence Report RO 50-25#/76-38 which will be submitted within 14 days of the date of this occurrence.

Very truly yours, COMMONWEALTH EDISDN COMPANY QUAD-CITIES NUCLEAR POWER STATION ,

J MadWP -

N. J. Kallvianakis Station Superintendent cc: G. A. Abrell k$) NlO) }//9/9') k Mm@ rM@mMFWa%=mMwwwvimngwpnn:t:sca.gpq:w.wgg  :

8306160212 770217 PDRADOCK05000g 4

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