ML19256C774
| ML19256C774 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 04/03/1979 |
| From: | Bryan S, Nolan F NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| To: | |
| References | |
| PNO-79-071, PNO-79-71, NUDOCS 7910120452 | |
| Download: ML19256C774 (1) | |
Text
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PRELIMINARY NOTIFICATION April 3, W/:s PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE --~PN0-79-71 This preliminary notification constitutes EARLY notice of an event of POSSIBLE safety or public interest significance.
The information oresented is as initially received without verification or evaluation and is basically all that.is known by IE staff as of this date.
FACILITY: Virginia Electric and Power Company
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North Anna 1 Docket No. 50-333 Mineral, Virginia
SUBJECT:
FOREIGN MATERIAL IN SECONDARY COOLANT SYSTEM Following a reactor shutdown initiated by loss of component ccoling to a reactor coolant pump, the licensee determined that foreign material had jammed in the stop valve of a~ Main Steam Reheater (MSR).
The MSR is a large heat exchanger located between the high and low pressure stages of the turbine and is used to reheat the steam after it leaves the high pressure stage of the turbine.
The reactor shutdown was not directly related to the MSR problem. The licensee elected to keep the reactor down to complete a snubber inspection which had been planned for later this week, while repairing the MSR stop valve.
The licensee issued a press release and the information has been used by local media. NRC does not plan a news release.
The Comonwealth of Virginia has been notified.
Region II (Atlanta) received notification of this occurrence by telephone from IE inspector on site at 4:00 p.m. on April 2.
This information is current as of 9:30 a.m. on April 3.
Contact:
FNolan, IE x28019 SEBryan, IE x28019 O
Distribution:
Transmitted H St /'
Cnairman hendrie Commissioner Bradford S. J. Chilk, SECY Commissioner Kennedy Commissioner Ahearne C. C. Kammerer, CA Comissioner Gilinsky (For Distribution)
Transmitted:
MNBB M W P. Bldg b h J. G. Davis, U S b IE %
L. V. Gossick, EDO H. R. Denton, NRR Region !.'
H. L. Ornstein, EDO R. C. DeYoung, NRR J. J. Fouchard, PA R. J. Mattson, NRR N. M. Haller, MPA V. Stello, NRR (MAIL)
R. G. Ryan, OSP R. S. Boy //t/ Vl4R4 J. J. Cummings, 01A db H. K. Shapar, ELD SS Bldg R. Minogue, SD W. J. Dircks, NMSS PRELIMINARY NOTIFICATION g_
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