ML20009F671

Revised First Interim Deficiency Rept Re balance-of-plant Isolator Cabinet,Initially Reported on 810527.Revision Identifies Proper Vendor as E Max Inc.Next Rept Will Be Submitted by 810925.Also Reportable Per Part 21

ML20009F671
Person / Time
Site:	Bellefonte
Issue date:	07/10/1981
From:	Mills L TENNESSEE VALLEY AUTHORITY
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
REF-PT21- 10CFR-050.55E, 10CFR-50.55E, NUDOCS 8107310396
Download: ML20009F671 (2)

Text

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~ < ' 3 400 Chestnut Street Tower IIl July 10, 1981 . i-BLRD-50-438/81-41 BLRD-50-439/81-43 e,g\j73 4./,

2 Mr. James P. O'Reilly, Director - b 1981 ,

Office of Inspection and Enforcement S. g o,0  ;

U.S. Nuclear Regulatory Commission Region II - Suite 3100 r.

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101 Marietta Street o' 7 f f.

Atlanta, Georgia 30303 Q c)

Dear Mr. O'Reilly:

BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 - BOP ISOLATOR CABINET -

BLRD-50-438/81-41, BLRD-50-439/81 REVISED FIRST INTERIM REPORT The subject deficiency was initially reported to NRC-0IE Inspector R. V. Crlenjak on May 27, 1981 in accordance with 10 CFR 50.55(e) as NCR 1472, This was followed by our first interim report dated June 26, 1981. As discussed with R. V. Crlenjak by telephone on June 30, 1981, enclosed is our revised first interim report. The reason for the revision is to correctly identify the responsible vendor. We expect to submit our next report by September 25, 1981. We consider 10 CFR Part 21 applicable to this deficiency.

If you have any questions concerning this matter, please get in touch with D. L. Lambert at FTS 857-2581.

Very truly yours, TENNESSEE VALLEY AUTHORITY

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. . L. M. Mills, Manager Nuclear Regulation and Safety Enclosure cc: Mr. Victse Stello, Jr., Director (Enclosure) 0"fice of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, DC 20555 8107310396 810710 f 'l\

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ENCLOSURE .

l 4 BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 BOP ISOLATOR CABINET BLRD-50-438/81-41, BLRD-50-439/81-43 10 CFR 50.55(e)

REVISED FIRST INTERIM REPORT Description of Deficiency During receiving inspection of balance-of-plant (B0P) wall-mounted isolator

, cabinet 2IX-ISOL-262-G at Bellefonte, TVA employees found ti at a ' conductor 1

was pulled out 'of terminal lug TBA-5A-5. The BOP isolators are used to effectively isolate electrical Class IE from non-Class IS instrumentation.

. The conductor in question is on the . Class IE (input) side of the cabinet.

This condition has not been noticed on any other isolator cabinet. It is apparently caused by interference of the door-locking mechanism with the i

internal wiring. This defect may be ' generic to the other wall-mounted J

isolator cabinets at Bellefonte.

Interim Progress

, The vendor, E. Max, Incorporated, has agreed to examine all wall-mounted cabinets for interference of the locking mechanism with the conductors.

The vendor has agreed to reroute conductors, shield conductors from the

locking mechanism, and/or modify the locking mechanism as necessary to j prevent interference. The vendor will also reterminate the Icose I

conductor.

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