ML20080H865
| ML20080H865 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 02/02/1984 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| NCR-2296, NUDOCS 8402140351 | |
| Download: ML20080H865 (2) | |
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TENNESSEE VALLEY AUTHORITY k
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Febraary 2, 1984 BLRD-50-438/85-50,. +
BLRD-50-439/83-43,
U.S. Nuclear Regulatoch. Commission Region II Attn:
Mr. Jaites P. OJReilly, Regional Administrator 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia ~30303 _
Dear Mr. O'Reilly:
BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 - MISSING 0-RING SEALS ON FLEXIBLE CONDUIT - BLRD-50-438/83-50, DLRD-50-439/83 SECOND INTERIM REPORT The subject deficiency was initially reported to NRC-0IE Inspector P. E.
._,Fredrickson on September 6,1983 in accordance with 10 CFR 50.55(e) as NCR
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229.6. This was followed by sour interim report dated October 4,1983 Enclosed is crtr secor.3 2nterim report. We expect to subiait our next report by November 9,1984.
Ifyouhlaveanyquestions,jleasagetintouchwithR.H.Shellat FTS 858-2688.
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Very truly yours, TEYNESSEE VALLEY AUTHORITY
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L. M. Mills, nager Nuclear Licensing Enclosure cc:. Mr. Richard C. DeYoung,' Director (Enclosure)
Office of Inspection and Enforcement U.S.' Nuclear Regulatory Commission Washington, D.C. ' 20555 Records Center (Enclosure)
Institute of Nuclear Power Operations 1100 circle 75 Parkway, suite 1500 Atlanta, Georgia 30339 8402140351 820202 OFFICIM CO. PY -
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ENCLOSURE a
BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 MISSING 0-RING SEALS ON FLEXIBLE CONDUIT e
BLRD-50-438/83-50, BLRD-50-439/83-43 NCR 2296 10 CFR 50.55(e)
SECOND INTERIM REPOR?
Description of Deficiency TVA uses various brands of flexible conduit manufactured by several vendors. Some types of flexible conduit are supplied with integral moisture seals while other types require the insertion of a separately supplied "O" ring to preserve the NEMA rating of the enclosure to which flexible conduit is attached. At Bellefonte, TVA has determined that, contrary to the particular manufacturer's instructions, flexible conduit requiring an "O" ring has been installed in various areas of the plant without these "0" rings. The cause of this failure has been determined to be: inadequate site procedures concerning installing flexible conduit to manufacturer's instructions.
Interim Progress TVA has prepared Construction Procedure BNP-QCP-3 32 to verify compliance of field-installed flexible conduit connectors when installed on class 1E electrical enclosures, and BLN Construction is presently investigating all connections to determine the specific corrective action to be applied to each connection missing a required "0" ring.
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