ML17272A587
| ML17272A587 | |
| Person / Time | |
|---|---|
| Site: | Columbia  |
| Issue date: | 08/02/1979 |
| From: | WASHINGTON PUBLIC POWER SUPPLY SYSTEM |
| To: | |
| Shared Package | |
| ML17272A586 | List: |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, NUDOCS 7908150568 | |
| Download: ML17272A587 (2) | |
Text
REPORTED DEFICIENCY AND CORRECTIVE ACTION FOR DIESEL ENGINE TRUBOCHARGER THRUST VEARING PROBLEM NATURE OF DEFICIENCY Stewart/Stevenson informed Burns 8
Roe by letter, dated May 29, 1979, that the Electro-Motive Division of General Motors Diesel
- Engines, furnished by them as part of the emergency onsite power system, may have a potential problem with the turbocharger thrust bearing.
Recent lubricating oil system tests conducted at Electro-Motive indi-cate that certain repeat start operating modes could result in turbo-charger thrust bearing damage which might ultimately cause a turbo-charger failure.
This problem has been identified in IE Circular No. 79-12, dated June 28, 1979.
He have determined that the two emergency onsite power systems and the HPCS system use the Electro-Motive diesel engines with the potential turbocharger problem.
SAFETY IMPLICATIONS Failure of the turbocharger would result in a failure of the diesel generator to perform its intended function, and would reduce the
, Emergency Core Cooling Systems below minimum requirements.
CORRECTIVE ACTION TAKE.N AND PLANNED Electro-Motive is currently working on the development'of an improved lube oil system.
The system will be available for installation on our
'nits in the near future.
The modification kits will be installed prior to system startup testing.
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