ML20099L318
| ML20099L318 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 02/27/1985 |
| From: | Hufham J TENNESSEE VALLEY AUTHORITY |
| To: | Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| NCR-3069, NCR-3454, NCR-3457, NCR-3684, NUDOCS 8503200562 | |
| Download: ML20099L318 (2) | |
Text
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e TENNESSEE VALLEY AUTHORITY WY$e"s3Yut'MEe"e't Yo'we/M BLRD-50-438/84-385 MAR 6A7: 40 U.S. Nuclear Regulatory Commission Region II Attn:
Dr. -J.
Nelson Grace, Regional Adninistrator 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323
Dear Dr. Grace:
BELLEFCNTE NUCLEAR PLANT INIT 1 - CONDUIT SIPPORT STIFFEER PLATES NOT INSTALLED PER DRAWING - BLRD-50-438/84 THIRD INTERIM EPORT The subject deficiency was initially reported to NRC-0IE Inspector P. E. Fredrickson en May 10, 1984 in accordance with 10 TR 50.55(e) as NCR 3069 This was followed by our first interim report dated June 4,1984.
Subsequently, NCR 3457, which &ctamts a similar condition, was initiated and was reported on with NCR 3069 in TVA's second interim report dated September 24, 1984.
Sinoe that time, two more items, NCR 3454 and NCR 3684, which doctment similar conditions, have been initiated. TVA intends to report on all these NCRs simultaneously. Enclmed is our third interim re por t.
We expect to subnit our next report on x about August 5,1985 If you have any questions, please get in touch with R. H. Shell at FTS 858-2688.
Very truly yours, TENNESSEE VALLEY AUTHORITY J. W. Hufham, Manager Licensing and Regulations Enclosure
.cc:
Mr. James Taylor, Director (Enclosure)
Office of Inspection and Enforcement U.S. Nuclear Regulatory Canmission Washington, D.C.
20555 Records Ceter (Enclosure)
Institute of Nuclear Power Operations 1100 Circle 75 Parkway, Suite 1500 Atlanta, Georgia 30339 ffA9 I
I 8503200562 850227 PDR ADOCK 05000438 OFFIC/AL COP s
PDR An Equal Opportunity Employer
3 ENCLCSURE BELLEFGITE NUCLEAR PLANr IMIT 1
' CONDUIT StPPORT STIFFE)ER PLATES Nor INSTALLED PER DRAWING BLRD-50-43 8/84-34 NCRs 3069, 3454, 3457, AND 3684 10 TR 50.55(e)
THIRD INTERIM EPORT Description of Deficiency Neerous deficiencies involving electrical conduit support installations which were initially inspected and accepted during the timeframe from 1979 to.1982 have been identified at Bellefonte Nuclear Plant (BLN). Several nonconforinance reports (NCRs) were issued by TVA to dooment the subject deficiencies and are individually identified below.
TV5 has determined that the apparent cause of these deficiencies was a lack of knowledge regarding detailed design and construction requirements by personnel performing electrical support installation and inspection activities during the identified timeframe (1979 to 1982).
NCRs 3069. 3454, and 3457 The stiffener plates for conduit supports FF-768-6/31, 768-36/31/117 and 768 36/31/5, respectively, were not installed in accordance with the applicable
- TVA design drawings.
NCR 3684 Duef to the conditions identified by NCRs 3069, 3454, and 3457, WA performed a reinspection of 15 randomly selected electrical hanger installations which had been initially inspected and accepted during the 1979 to 1982 timeframe.
From' this minspection, 4 supports were identified with various deficiencies such as incorrect bolt sizes, inadequate welds, interferences and incorrect mark ntaber of support installed.
Safety Islications The failure to construct safety-mlated electrical supports to design requirements could possibly result in a failure of the affected supports during design basis loading conditions. This could adversely affect the safe operations of the plant.
Corrective Action - NCRs 3069, 3454, and 3457 TVA has evaluated the as-built configuration of support FF-768-6/31 and has determined that the support is acceptable for use-as-is. 32pports 768-36/31/117 and 768-36/31/5 have been reworked to correct the deficiencies.
NCRs 3069, 3454, and 3467 have been closed.
,:7
Interi7 Prcutreca - NCR 3684 1
I.
TVA is initiating a program to identify and reinspect all electrical hangers that were initially inspected and accepted during the timeframe of 1979 to 1982. All deficiencies which are identified during this reinspection will be doctmented and corrected. Additionally, ELN quality control procedure (QCP) 3.32, " Raceway Verification," is being revised to include inspection criteri for electrical hangers. The walkdown inspection performed tmder QCP 3.32 will provide additional assurance that design requiremasts have been met for all affected electrical hanger installations.
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