ML19319D180
| ML19319D180 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 06/07/1978 |
| From: | Reid R Office of Nuclear Reactor Regulation |
| To: | Stewart W FLORIDA POWER CORP. |
| References | |
| NUDOCS 8003130746 | |
| Download: ML19319D180 (2) | |
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DISTRIBUTION:
Docket V V/VCM.9/\\!
Docket No. 50-302 ffe eading BGrimes/TCarter i
OELD OI&E(3)
-Florida Power Corporation i
ATIN: Mr. W. P. Stewart n
Director, Power Production RIngram P. D. Box 14042. Mail Stop C-4 DEisenhut St. Petersburg, Florida 33733 TAbernathy JBuchanan Gentlemen:
6)
On May 8,1978, you reported a recent shaft failure in decay heat removal pump (DHP) 1-A at Crystal River Unit No. 3 (CR-3). As noted this was the second such failure of this pump.
The DHPs are part of your emergency core cooling system and are intended to supply low pressure safety injection and long tem cooling in the event of a loss of coolant accident. The shaft failures which have occurred place the reliability of the DNPs at CR-3 in question. There-fore, you are requested to justify that your DHPs can be expected to perform their intended functions. This justification should include a description of the shaft failures, DHP operating histories. DHP operating requirements, corm ctive action taken or to be taken and additional surveillance currently perfomed and proposed. In addition you should i
provide your detemination, including analytical support, of the cause of the failures and a clear sectional assembly drawing of the DNP, with dimensions. Specific reference to previously submitted material is j
acceptable.
Due to the safety significance of this issue we must agree. prior to l
i restart of your facility, that the DHPs at CR-3 can be expected to l
perform their intended functions. Therefore, please submit the requested infomation as soon as possible.
D p
sincerely, T 3 [
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Robert v. Reid. Chief g M.
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Operating Reactors Branch #4 Division of Operating Reactors 3
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- u. S. SOVERNesgNT PatNTINe 0,FICEs 1979 -838434
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F1'orida Power L.poration
- cc: Mr. S. A. Brandimore
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Vice President and General
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Counsel P. O. Box 14042 St. Petersburg, Florida 33733 Crystal River Public Library Crystal River, Florida 32629
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