ML20083P610

Second Interim Deficiency Rept Re Lack of Environ Qualification of Equipment in Auxiliary Bldg.Initially Reported on 820422.Engineering Change Notice 1579 Initiated. Next Rept by 830518

ML20083P610
Person / Time
Site:	Bellefonte
Issue date:	01/27/1983
From:	Mills L TENNESSEE VALLEY AUTHORITY
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
10CFR-050.55E, 10CFR-50.55E, NUDOCS 8302030542
Download: ML20083P610 (2)

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TENNESSEE VALLEY AUTHORITY CH ATTANOOGA. TENNESSEE 374ot 400 Chestnut Street Tower II

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January 27, 1983 3

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BLRD-50-438/82-33

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BLRD-50-439/82-30 roo U.S. Nuclear Regulatory Commission Region II Attn:

Mr. James P. O'Reilly, Regional Administrato."

101 Marietta Street, Suite 3100 Atlanta, Georgia 30303 1

Dear Mr. O'Reilly:

BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 - LACK OF ENVIRONMENTAL QUALIFICATION OF EQUIPMENT IN AUXILIARY BUILDING BECAUSE OF-POTENTIAL FAILURE OF STARTUP AND RECIRCULATION SYSTEM - BLRD-50-438/82-33, BLRD-50-439/82 SECOND INTERIM REPORT The subject deficiency was initially reported to NRC-0IE Inspector R. V. Crlenjak on April 22, 1982 in accordance with 10 CFR 50.55(e) as NCR BLN NEB 8203. This was followed by our interim report dated May 24, 1982. Enclosed is our second interim report. We expect to submit our next report by May 18, 1983 An extension on the submittal of this report was granted by NRC-0IE Inspector Paul Fredrickson on December 28, 1982.

If you have any questions concerning this matter, please get in touch with R. H. Shell at FTS 858-2688.

Very truly yours, TENNESSEE VALLEY AUTHORITY L. M. Mills, ager Nuclear Licensing i

Enclosure cc:

Mr. Richard C. DeYoung, Director (Enclosure)

Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C.

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OFFICIAL COPV) 8302030542 830127 gg.

1 PDR ADOCK 05000438

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S PDR An Equal Opportunity Employer

ENCLOSURE BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 LACK OF ENVIRONMr.NTAL QUALIFICATION OF EQUIPMENT IN AUXILIARY BUILDING BECAUSE OF POTENTIAL FAILURE OF STARTUP' AND RECIRCULATION SYSTEM NCR BLN NEB 8203 BLRD-50-438/82-33, BLRD-50-439/82-30 10.CFR 50.55(e)

SECOND INTERIM REPORT Description of Deficiency A pipe failure of the nonsafety grade Steam Generator Startup and Recirculation System in the Auxiliary Building could result in a harsh environment that exceeds the qualification limits for safety-related electrical equipment. Failure of nearby safety-related equip =ent in~one system train because of the harsh environment caused by the pipe break coupled with an assumed failure in the same safety system in the other train may result in a situation that could adversely affect safe shutdown of the plant.

The cause of this deficiency was determined to be lack of sufficient pipe break analysis criteria at the time of system design. No other TVA facilities are affected by this deficiency.

Interim Progress Engineering change notice 1579 has been written and approved to relocate and/or enclose by guard piping or pipe chase the steam generator startup and recirculation piping in the auxiliary building trained areas. This work has been scheduled and is in the process of being implemented.

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