ML20081D782
| ML20081D782 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 10/20/1983 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| 10CFR-050.55E, NCR-2381, NUDOCS 8311010334 | |
| Download: ML20081D782 (2) | |
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TENNESSEE VALLEY AUTHORITY CH ATTANOOGA, TENNESSEE 374o1 400 Chestnut Street Tower II h8[ 1g, 47 Octob BLRD-50-438/83-39 U.S. Nuclear Regulatory Conunission Region II Attn:
Mr. James P. O'Reilly, Regional Administrator 101 Marietta Street, NW, Suite 2900 Atlanta, Oeorgia 30303
Dear Mr. O'Reilly:
BELLEFONTE NUCLEAR PLANT UNIT 1 - WATER DAMAGE TO REACTOR BUILDINO NORMAL SUMP ISOLATION VALVE MOTOR OPERATOR - BLRD-50-438/83 SECOND INTERIM REPORT The subject deficiency was initially reported to NRC-0IE Inspector P. E. Fredrickson on June 9,1983 in accordance with 10 CFR 50.55(e) as NCR 2381. This was followed by our interim report dated July 8,1983 Enclosed is our second interim report.. We. expect to submit' our next report by August 3, 1984.
If you have any questions, please get in touch with R. H. Shell at FTS 858-2688.
Very truly yours, TENNESSEE VALLEY AUTHORITY L. M. Mills, Manager Nuclear Licensing Enclosure oc: 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, Oeorgia 30339 OFFICI AL COPY i.
8311010334 831020 PDR ADOCK 05000438 f5 - S f S
PDR 1983-TVA SOTH ANNIVERSARY I
I An Equal Opportunity Employer
ENCLOSURE BELLEFONTE NUCLEAR PLANT UNIT 1 WATER DAMAGE TO REACTOR BUILDING NORMAL SUMP ISOLATION VALVE MOTOR OPERATOR NCR 2381 BLRD-50-438/83-39 10 CFR 50.55(e)
SECOND INTERIM REPORT Description of Deficiency The motor operator and other internal electrical parts on the Reactor Building (RB) normal sump isolation valve (IWL-IFCV-068-B) were immersed in water during flooding of the RB Normal Sump Tank Room. The cause of this flooding was valve misalignment during a flushing process. Because of a failure to take prompt corrective action on the operator, corrosion subsequently damaged the internal electrical parts. This failure to take corrective action stemmed from a failure of TVA engineering personnel to evaluate the quality control investigation report (QCIR) which identified the soaked operator and generate a nonconformance report (NCR) from this QCIR. The NCR would then have required corrective action to be determined and performed which could have prevented any serious corrosion from occurring.
Interim Progress TVA has determined that repair of the damaged motor operator at the TVA Power Service Shop at Muscle Shoals would be inaopropriate (with regard to maintaining IE qualification) and consequently, is returning the operator to Limitorque (the vendor) for repair.
To prevent a recurrence of this condition responsible personnel have been retrained to BNP-CTP-6.1, " Cleaning and Flushing of Systems" which defines the alignment of the valves to be checked by QC personnel prior to flushing. Also, BNP-QCP-10.4 has been revised (Rev. 10) to eliminate the use of QCIRs and this revision has an effective date of November 1,1983.
Upon issue of revision 10 conditions adverse to quality will be directly documented by NCR.
TVA will provide additional information concerning scheduling repair and reinstallation of the motor operator after it receives scheduling information from the vendor.
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