ML19261F272
| ML19261F272 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 03/29/1974 |
| From: | John Miller METROPOLITAN EDISON CO. |
| To: | |
| References | |
| NUDOCS 7910250712 | |
| Download: ML19261F272 (1) | |
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METROPOLITAN EDISON COMPANY w.c.mor cesanat puaticuritaris:conecuric i j
)ST OFFICE BOX 542 READING, PENNSYLVANI A 19603 TELEPHONE 215 - 929-36o1 Dr. D.F. Knuth, Director Directorate of Regulatorv Operr ions United States Atomic Energy commission Washingten, D.C.
20545
Subject:
Three Mile Island Nuclear Station Unit I Docket No. 50-289 -- -
Nuclear Service River Water (NSRW) Pump Failure
Dear Dr. Knuth:
You we re notified on March 4, 3 971, of a situation which may be consid-ted reportable under 10CFR50.55(e), " Conditions of Construction". This situation related to the failure of NSRW Pump "A".
DESCRIPTION OF INCIDENT During the Hot Functional Test Sequence, the subj ect pump experienced a mechanical failure. This failure consisted of pump shaft fracture in the pump-motor shaf t coupling area. An alternate pump was activated and the Hot Functional Test Sequence resumed without further operating difficul-ties or apparent damages.
CORRECTIVE ACTION TAKEN The subject pump was dismantled for inspection and engineering review.
In addition to pump shaft fracture, it was found that the shaft coupling key was sheared and the motor support brackets cracked.
The motor and pu=p have been returned to their respective vendors for complete inspection and repair as required. Follcwing their engineering review, changes will be incorporated as required. When the results of the manuf acturer's evaluation are received, they will be available for your review of the Three Mile Island Site, Very truly yours.'
'")q gl J'. G. Miller Vice President 7910250]lk.
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