ML20063K016

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Advises of Current Schedule to Complete Installation of Containment Cooling Svc Water Loop Mods Per IE Bulletin 79-14.Installation of Loop 2B Mods Expected by 830215
ML20063K016
Person / Time
Site: Dresden Constellation icon.png
Issue date: 08/30/1982
From: Rausch T
COMMONWEALTH EDISON CO.
To: James Keppler
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
REF-SSINS-6820 4906N, IEB-79-14, NUDOCS 8209030138
Download: ML20063K016 (2)


Text

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' ~~ Commonwealth ECson

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, one First National Plata. Chic:go Ilknois

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( ' Address R: ply to: Post Offica Box 767

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Chicago. Illinois 60690 Augus t 30, 1982 i

Mr. Jame s G. Keppler, Regional Administrator Directorate of Inspection and Enfo rcemen t - Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 Subj ec t : Dresden Station Unit 2 Additional In formation Concerning Actions Taken to Correct CCSW Piping Support Damage i NRC Docket No. 50-237 i References (a): T. Rausch letter to J. G. Keppler l dated November 9, 19 81.

(b): T. Rausch letter to J. G. Keppler dated May 28, 1982. l l

(c): J. G. Keppler letter to Cordell Reed ,

dated July 14, 1982. l l

Dear Mr. Keppler:

In Re ference (a), Commonwealth Edison provided information concerning our planned actions to minimize the potential for future water hammer damage to the Dresden 2 Containment Cooling Service Water (CCSW) system. Provided in Reference (b) was an approximate schedule for completing I.E.Bulletin 79-14 modifications to CCSW i

loops 2 A and 28. For your information, our current schedule, based l on material delivery and installation time, is to complete installa-tion of the CCSW loop 2B modifications by February 15, 1982, as pa rt of the Hot Shutdown Pa th described in the Reference (c) Confirmation ,

o f Action Letter (regarding I.E.Bulletin 79-14 completion) . If loop 2A is not completed by that time, it will be given a high l priority for completion. l The delay from our previous schedule is primarily due to material availability, with the recen t I.E.Bulletin 79-14 re-prioritization also contributing to the delay.

l Considering that the system has been previously shown to meet the I.E.Bulletin 79-14 operability criteria, this schedule l change does not significantly impact plant or public safety.

8209030138 820830 PDR ADOCK 05000237 Q PDR AUG 31 te2 j[ /[

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t l J. G. Keppler -

2- Augus t 30, 1982 1

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Please address any questions you may have concerning this

! matter to this office. I i l Very truly yours, l 4

i hhseff-Thomas J. Rausch

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Nuclear Licensing Administrator 1m cc: Region III Inspector - Dresden i

4906N 1

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