ML19310A300
| ML19310A300 | |
| Person / Time | |
|---|---|
| Site: | Hartsville, Phipps Bend  |
| Issue date: | 06/04/1980 |
| From: | TENNESSEE VALLEY AUTHORITY |
| To: | |
| Shared Package | |
| ML19310A295 | List: |
| References | |
| NCR-HTN-NEB-80, NUDOCS 8006110058 | |
| Download: ML19310A300 (1) | |
Text
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ENCLOSURE O
HARTSVILLE AfiD PHIPPS BEtID fiUCLEAR PLAtlTS STAtiDBY GAS TREATMEtiT SYSTEM CHARC0AL ADSORBER DEFICIErlCIES (CTI-f1VCLEAR) 10CFR50.55(e) REPORT fl0. 1 (It1TERIM)
NCR'S HTN NEB 80-02 AND PBN NES S0-02 On May 8,1980, TVA informed t1RC-01E Region II Inspector R. W. Wright of a potentially reportable condition under 10CFR50.55(e) regarding separation of standby gas treatment system (SGTS) charcoal adsorber, charcoal retention screens from their frames due to improper or broken spot welds at the Hartsville and Phipps Bend fluclear Plants. This is the first interiin report on the subject reportable condition. The final report will be filed on or before August 20, 1980.
Description of Deficiency As a result of an investigation prompted by IE Bulletin 00-03, all 12 SGTS charcoal adsorber beds furnished to TVA (eight to Hartsville and four to Phipps Bend) by CTI-fluclear, Cleveland, Ohio, were found to have-separations between the charcoal retention screens and the frames to which the screens are mounted. These separations were caused by broken or inadequate spot welds.
This condition violates the purchase specification (CFBraun Specification 165-01) which calls for seal welding and careful inspection of critical joints during and after construction. The separations could result in loss of charcoal from the beds and formation of bypass leakage paths through the charcoal beds.
,N Interim Corrective Actions CTI-fluclear is investigating the problem and is determining corrective actions which will require CFBraun approval before action is taken.
Corrections (rewelding, etc.) will probably be made at the plantsite because at least one SGTS adsorber bed (Hartsville unit A1) has been installed and would be difficult to remove and scheduled concrete work at Hartsville will require that other adsorber beds be installed in the near future.
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8 0 0 e 1100SKS
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