ML20249A097
| ML20249A097 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 01/24/1978 |
| From: | Klingler G, Nolan F, Sniezek J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| To: | |
| References | |
| PNO-78-012, PNO-78-12, NUDOCS 9806160055 | |
| Download: ML20249A097 (1) | |
Text
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PRELIMINAR
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v.i January 24, 1978 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-78-12 This preliminary notification constitutes EARLY notice of an event of POSSIBLE safety or public interest significance.
The information presented is as initially received without verification or evaluation
.and is basically all that is known by IE staff on this date.
Facility:
Calvert Cliffs Unit No.1 (DN 50-317)
Baltimore Gas and Electric Company Lusby, Maryland
Subject:
FORCED OUTAGE DUE TO EXCESSIVE REACTOR COOLANT SYSTEM LEAKAGE During the afternoon of January 22, 1978, unidentified Reactor Coolant System leakage was determined to be about 2 gpm, which exceeded the allowable 1.0 gpm Technical Specification limit.
Packing gland leakage
)
was found on a pressurizer spray valve and a pressurizer instrumentation root stop valve.
However, this leakage could not be quantitatively measured I
and the plant was shut down at 10:26 p.m.
that evening.
The leakage could not be corrected or positively identified within the time' period allowed by Technical Specifications.
Therefore, the plant was taken to the cold
- ].
shutdown condition at 11:45 a.m.
t,oday.
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- ( :
A six week refueling and maintenance outage was previously scheduled to g!
commence on January 28, 1978.
The plant will now remain in cold shutdown
- 7 and commence outage work four days earlier than planned.
I Media interest is not expected. The State of Maryland has been informed.
'g A press release is not planned by the licensee or NRC.
4 NRC, Region I, (Philadelphia) received notification of this occurrence by telephone from the. Nuclear Plant Engineer - Operations at 12:15 p.m.
on Y
January 24, 1978.
Contact:
Grslingler IE x28019 FNolan, IE x28019 JSniezek IE x28019 Distribution:
Transmitted H St 2J 3 I Chairman Hendrie Commissioner Bradford Commissioner Kennedy S. J. Chilk, SECY C. C. Kammerer, CA Commissioner Gilinsky (For Distribution)
Transmitted: MNBB 2l37 P Bldg M 3 E. Volg y u, IE l
L. V. Gossick, ED0 E. G. Case, NRR Region _A -
M,2, l
S. H. Hanauer, ED0 I
J. J. Fouchard, PA SS Bldg M 4/
(MAIL) l R. Hartfield, MIPC
,f. V. Smith, NMSS T. J. McTiernan, 0IA
.g.
R. G. Ryan, OSP Di Ps. Minogue, SD
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H. K. Shacar. ELD
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} S I%12 9906160055 790124 PDR PRELIMINARY NOTIFICATION
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