ML20066A872

Submits Supplemental Response to IE Bulletin 80-13, Cracking in Core Spray Spargers. No Cracking Identified During 820917 Insp.Insps Should Be Performed Every 3 Yrs in Conjunction W/Reactor Vessel Internals Insps

ML20066A872
Person / Time
Site:	Quad Cities
Issue date:	10/28/1982
From:	Swartz E COMMONWEALTH EDISON CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
REF-SSINS-6820 5342N, IEB-80-13, NUDOCS 8211060257
Download: ML20066A872 (2)

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( j/ Chicago, Illinois 60690 October 28, 1982 Mr. James G. Keppler, Regional Administrator Directorate of Inspection and Enforcement - Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137

Subject:

Quad Cities Station Units 1 and 2 Supplemental Response to IE Bulletin 80-13

" Cracking in Core Spray Spargers" NRC Docke t No . 50-254/265 References (a): J. G. Keppler letter to Cordell Reed dated May 12, 1980 (b): T. J. Rausch letter to J. G. Kepple r dated September 16, 1980 (c): E.D. Swartz letter to J. G. Keppler dated December 16, 1981

Dear Mr. Keppler:

Reference (a) transmitted IE Bulletin 80-13, which identified instances of cracking in Core Spray Spargers at BWR facilities. As required by Bulletin Item 1, our Quad Cities Station Unit 1 Core Spray Spargers were visually inspected on September 17, 1982, utilizing a remote underwater TV camera. The segment o f piping between the inlet nozzle and vessel shroud was also inspected on each Core Spray loop. Adequate resolution was obtained with the underwater TV camera.

The purpose of this letter is to advise the NRC Staff that no evidence of cracking was identified during the conduct o f the above described inspection. This completes the third inspection o f Core Spray Spargers at our Quad Cities Station. The results o f the first and second inspections were documented in References (b) and (c).

None o f these three (3) inspections revealed any evidence of cracking in the spargers. Because of the favorable results and the fact that one day o f critical path time in the refueling outage schedule is required to perform each inspection, it is our belief that the frequency o f these inspections should be reduced.

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Additionally, we desire the elimination o f the requirement for video resolution to be checked with a one mil wire. In lieu o f the currently imposed inspection program, we propose that the Core Spray Sparger inspections be performed once every three (3) years in conjunction with the reactor vessel internals inspections required by our ISI Program.

Your concurrence with our proposed changes to the currently imposed Core Spray Sparger inspection program is hereby requested.

Please address any questions that you or your staf f may have concerning this matter to this office.

Very truly yours E. Douglas Swartz Nuclear Licensing Administrator cc: NRC Office o f Inspection and Enforcement Division o f Reactor Operations Inspection Washington, DC 20555 NRC RIII Inspection - Quad Cities Roby B. Bevan ORB - 2 5342N