ML20064N058

Interim Deficiency Rept Re Out of Tolerance T-quencher Diffusion Holes.Initially Reported on 820729.Investigation Underway.Final Rept Will Be Submitted by 830315

ML20064N058
Person / Time
Site:	Nine Mile Point
Issue date:	08/25/1982
From:	Manno S NIAGARA MOHAWK POWER CORP.
To:	Starostecki R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
10CFR-050.55E, 10CFR-50.55E, 82-473, NUDOCS 8209080212
Download: ML20064N058 (2)

Text

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. o Y NIAGARA NUMOHAWK NIAGARA MOHAWK POWER CORPORAT10N/300 ERIE BOULEVARD WEST. SYRACUSE. N.Y.13202/ TELEPHONE (315) 474-1511 SAMUEL F. MANNO VICE PRESIDENT NUCLE AR CONSTRUCTION August 25, 1982 82-473 Office of Inspection and Enforcement Region I Attention: Mr. R. W. Starostecki, Director Division of Project and Resident Progran.s U.S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, PA 19406

Reference:

Re: Nine Mile Point Unit 2 Docket No. 50-410

Dear Mr. Starostecki:

Enclosed is an interim 30-day report in accordance with 10CFR50.55(e) for the deficiency concerning T-quencher holes. This condition was reported via telephone to Mr. Wiggins of your staff on July 29, 1982, as a potentially reportable deficiency.

Very truly yours, NIAGARA M0 HAWK POWER CORPORATION

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Samuel F. Fanno Vice President Nuclear Construction xc: Director of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, DC 20555 Mr. R. D. Shulz, Resident Inspector 8209080212 820825 PDR ADOCK 05000410 S PDR g6g

NIAGARA M0 HAWK POWER CORPORATION Nine Mile Point Unit 2 Docket No. 50-410 Interim Report for a Potentially Reportable Deficiency Under 10CFR50.55(e) Regarding T-Quencher Holes Description of the Deficiency ITT Grinnell informed SWEC of T-quencher diffusion holes, which were drilled out of tolerance on five T-quenchers, by submitting fabrication nonconformance reports for SWEC's disposition. Due to the identified nonconformances, SWEC inquired as to the nature of the problem and subsequently questioned the acceptance of the 10 previously shipped T-quenchers. At that point, ITT Grinnell disclosed that it had not performed a 100-percent dimensional check, nor could it provide any documentation to substantiate that all the as-builts conform to the tolerances set forth in the specification.

The matter is still under investigation. A final report will be submited by March 15,1983.

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