ML20005A084

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Interim Deficiency Rept Re heating/ventilation/air- Conditioning Cooling Sys,Initially Reported on 810330.Cause Attributed to Design Evolution.Corrective Actions to Be Completed as Described in 810424 Interim Rept
ML20005A084
Person / Time
Site: Comanche Peak  Luminant icon.png
Issue date: 06/23/1981
From: Gary R
TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To: Madsen G
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
10CFR-050.55E, 10CFR-50.55E, TXX-3349, NUDOCS 8106290356
Download: ML20005A084 (1)


Text

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TEXAS UTILITIES GENERATING COMPANY SC01 E!WAN 'IUWEft e DALLAS, TEXAS 76203 June 23, 1981

,_ TXX-3349 "lMLL':"L*:,", '

Mr. G. L. Madsen, Chief Reactor Projects Branch U. S. Nuclear Regulatory Commission Office of Inspection & Enforcement 611 Ryan Plaza Drive, Suite 1000 Docket Nos. 50-445 Arlington, Texas 76012 50-446 COMANCHE PEAK STEAM ELECTRIC STATION HVAC COOLING SYSTEM FILE N0; 10110 l

Dear Mr. Madsen:

In accordance with 10 CFR 50.55(e), we verbally reported to your Mr. R. G. Taylor on March 30, 1981, deficiencies associated with the HVAC System supplying cooling to the rooms containing vital AC power converters and DC battery chargers.

On April 24, 1981 we submitted an interim report logged TXX-5307 which addressed the technical aspects of the deficiency. We advised you at that time that we, in conjunction with our AE's % staff, were examining the QA program aspects of this deficiency. We nave completed our examination and have concluded that the problem is not a result of a QA program deficiency, but a design evolution resulting from increasing loads and equipment qualification program considerations.

Our corrective actions will be completed as described in the TXX-3307 April 24, 1981 report.

If we can provide any additional infomation, please advise.

Very tnaly yours, R. J. Gary RJG:kh cc: NRC Region IV - (0 + 1 copy)

Director, Inspection & Enforcement - (15 copies) c/o Distribution Services Branch, DDC ADM.

U. S. Nuclear Regulatory Commission Washington, D. C. 20555 l 8106290

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