PNO-I-87-102, on 871105,licensee Commenced Shutdown as Result of Degraded Conditions in Both steam-driven Auxiliary Feedwater Pumps.Duration of Shutdown to Restore Both Pumps to Operable Condition Unknown
| ML20236K164 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 11/05/1987 |
| From: | Lester Tripp, Wiggins J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | |
| References | |
| CAL-87-15, PNO-I-87-102, NUDOCS 8711090130 | |
| Download: ML20236K164 (2) | |
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DCS No:
50317871105 4
Date: November 5, 1987
)
l PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-1-87-102 i
This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or public interest significance. The information is as initially received without verification or evaluation, and is basically all that is known by the Region I I
staff on this date.
I i
Facility:
Licensee Emergency Classification:
Notification of Unusual Event
-Baltimore Gas and Electric Co.
~~~ Alert Calvert Cliffs Unit I Docket No. 50-317 Site Area Emergency General Emergency X
Not Applicable
Subject:
UNSCHEDULED PLANT SHUTDOWN r
The licensee commenced a shutdown of Calvert Cliffs, Unit 1, at approximately midnight on November 5, 1987 as a result of degraded conditions in both steam-driven auxiliary feedwater pumps.
The No.12 auxiliary feedwater pump (No.12 AFWP) was determined to be in a degraded, but operable, condition on October 30, 1987.
NRC agreed to continued operation of the Unit based on licensee compensatory commitments accepted by NRC in Confirmatory Action Letter 87-15, issued November 2, 1987.
Subsequently, on November 3,1987, the No.11 AFWP was declared inoperable and, following three days of unsuccessful testing of the No,11 steam-driven AFWP, the licensee initiated a controlled shutdown of Unit 1.
This action precedes, by about one day, the licensee's commitment as documented in the Confirmatory Action Letter to shut down tha unit if No. 12 AFWP reliability was not significantly improved.
l The plant is expected to be shutdown by 5:00 p.m., November 5, 1987.
The duration of the shutdown to restore both pumps to an operable condition is unknown.
The State of Maryland has been informed, CONTACT:
L. Tripp (FTS 488-1227)
J. Wiggins (FTS 488-1224) i DISTRIBUTION:
H. St.
MNBB Phillips E/W Willste Mail:
ADM:DMB Chairman Zech EDO NRR NMSS DOT:Trans only
'Comm. Roberts PA OIA RES Comm, Bernthal OGC AE00 NRC Ops Crt Comm. Carr Comm. Rogers ACRS Air Rights INP0----
l SECY SP NSAC----
CA PDR Regional Offices TMI Resident Section RI Resident Office l
Licensee:
l (Reactor Licensees) o 8711090130 871105 l
PDR I8<E PNO-I-87-102 PDR L
Date:
PRELIMINARY NOTTF1 CAT 10N OF EVENT OR UNUSUAL OC.'URRENCE--PNO-1.
.This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or l
public interest significance.
The information is as initially received without verifi-cation or evaluation, and is basically all that is known by the Region I staff on this date, Facility:
Licensee Emergency Classification:
Notification of Unusual Event Alert Site Area Emergency General Emergency Not Applicable
Subject:
I i
Region I Form 83 (Rev.. January,1983)
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