ML20155G637

Confirms Completion of All Actions Specified in Util 880919 Ltr Re Perturbations in Offgas Sys Resulting in Hydrogen Burn within Sys on 880904 & 17.Changes Made to Date Should Reduce Future Problems W/Excessive Hydrogen Buildup

ML20155G637
Person / Time
Site:	Perry
Issue date:	10/11/1988
From:	Miller H NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To:	Kaplan A CLEVELAND ELECTRIC ILLUMINATING CO.
References
NUDOCS 8810170289
Download: ML20155G637 (2)

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! OCT 1 1 1988 I

Docket No. 50-440 Docket No. 50-441 The Cleveland Electric Illuminating  !

l Company ATTN: Mr. Alvin Kaplan i Vice President i Nuclear Group I

20 Center Road Perry 0H 44081

Dear Gentlemen:

On September 4, 1988 and again on September 17, 1988, Perry Unit 1 experienced perturbations in the off-gas system resulting in hydrogen burns within the system. The September 4,1988 hydrogen burn resulted in combustion in two charcoal adsorber beds (fire extinguished by nitrogen purge), while the Sep ter..be r 17, 1988 event only involved a burn of the hydropen within the system, t

In response to the September 17th event you provided, via letter dated September 19, 1988, a listing of the specific actions you planned to implement to evaluate the event. Your letter also indicated that concurrence from Region III staff would be obtained prior to making Perry critical. On September 23, 1958, you were infonned that Mr. X. Connaughton, Senior Resident Inspector at Perry, was authorized to grant NRC concurrence for restart. After a thorough review by i special NRC inspection team of your root cause evaluation, correc-l tive actions, and operator training, Mr. Connaughton provided our restart l concurrence on September 25, 1988.

l During the startup we observed the special tests conducted on the off-gas system and conclude that the changes made to date should reduce the likelihood of future problems with excessive hydrogen buildup in the systen. Furthermore, your written submittal of September 23, 1988 identified long range plans to evaluate by the end of the first refueling outage, items for possible imple-l mentation that could further minimi:e the possibility of hydrogen burns in the off-gas system. We plan to conduct followup inspections to assess your actions in this area.

This letter is to confirm that you have completed all the actions specified ir, your letter of September 19, 1988, and that concurrence from the NRC was given prior to the restart of Perry Unit 1. Details on the NRC's actions will be contained in Inspection Report No. 50-440/88016(DRS).

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- i OCT 1 1 1988 i

Cleveland Electric Illuminating 2 We will gladly discuss ary questions you may have in this regard.

Sincerely.

-, ..ri l:'s,L 5%. 50 M DL ;q) ;xty Hubert J. Miller, Director Division of Reactor Safety cc: F. R. Stead, Director, Nuclear Support Department M. D. Lyster, General Manager.

Perry Plant Operations Department R. A. Newkirk, Manager, Licensing and Compliance Section S. S. Xensicki, Director, Perry Plant Technical Department DCD/DCB (RIDS)

Licensing Fee Management Branch Resident Inspector, RIII Harold W. Kohn, Ohio EPA Terry J. Lodge, Esq.

James W. Harris, State of Ohio Robert M. Quillin, Ohio Department of Health State of Ohio, Public Utilities Cormission l

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