PNO-V-89-038, on 890629,excessive Shaft Leakage Identified While Performing Inservice Testing of LPSI Pump.Walkdown to Verify Primary Plant Instrumentation Transmitters Properly Conformed to Equipment Qualification Requirements Performed
| ML13316A472 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 07/03/1989 |
| From: | Johnson P NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | |
| References | |
| PNO-V-89-038, PNO-V-89-38, NUDOCS 8907110001 | |
| Download: ML13316A472 (2) | |
ACU-Zk'~~~U1LI)
I)~KbJJr ALV~JA II VIN Z51t:TIhX REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)
ACCESSION NBR:8907110001 DOC.DATE: 89/07/03 NOTARIZED: NO DOCKET #
FACIL:50-362 San Onofre Nuclear Station, Unit 3, Southern Californ 05000362 AUTH.NAME AUTHOR AFFILIATION JOHNSON,P.
Region 5, Ofc of the Director RECIP.NAME RECIPIENT AFFILIATION
SUBJECT:
. PNO-V-89-038:on 890629,shutdown greater than 48 h.
DISTRIBUTION CODE: IE34D COPIES RECEIVED:LTR. 0 ENCL SIZE:.
/
D TITLE: Preliminary Notification-Occurrence/Non-RoutineEvent/Safeguards Even S
NOTES:
RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL INTERNAL: ACRS/SIESS 1
AEOD/DSP/TPAB 1
NRC OP CNTR 1
NRR/DRIS/SGB 9A 1
NRR/DRIS/SIB 9A 1
NRR/DRIS/VIB 1
NRR/PMAS/ILRB12 1
BS~STRACT 1
D OE DIR 1
EI 02 1
RES BROOKS,B 1
RES DEPY 1
S RES FILE 1
RES/DE 1
RES/DRA 1
RES/DSIR 1
RES/DSIR/EIB 1
RES/DSR DEPY 1
RES/PMPDAS 1
RGN5 FILE 01 1
EXTERNAL: DOE BARBER EV34 1
LPDR 1
NRC PDR 1
NSIC 1
R I
A D
No
'0 ALL RIDS" RECIPIEMMS:
ODIACT TH{E DOCmEFT CONTL DESK, ROCE P1-37 (EXT. 20079) '0 ELIIR'ECUR X
M MPRE DISTRIBUTION LISTS FOR DOCUMENS 'OU DON'T EEDI TOTAL NUMBER OF COPIES REQUIRED: LTTR
, ENCL 24
40 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-V-89-38 Date:
7/3/89 This preliminary notification constitutes EARLY notice of events 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 Region V staff on this date.
FACILITY: SOUTHERN CALIFORNIA EDISON Emergency Classification San Onofre Unit 3 X Notification of Unusual Event Docket No. 50-362 Alert San Clemente, California Site Area Emergency General Emergency Not Applicable
SUBJECT:
SHUTDOWN GREATER THAN 48 HOURS Excessive shaft seal leakage was identified late on June 29, 1989 while performing inservice testing (IST) of a low pressure safety injection (LPSI) pump. The system had already been out of service about 2-1/2 days for preventive maintenance, with the 72-hour action statement to expire at about 8:00 a.m. (all times PDT) on June 30. The licensee was unable to reduce the seal leakage, and initiated a plant shutdown at 6:30 a.m. on June 30.
An Unusual Event (UE) was declared at 6:32 a.m.
as prescribed by plant procedures.
The UE was terminated at 7:45 a.m. when power was reduced below 60%, a point below which. Combustion Engineering stated that fuel damage will not be encountered by any analyzed accident.
During the shutdown the licensee performed a walkdown to verify that primary plant instrumentation (PPI) transmitters properly conformed to equipment qualification (EQ) requirements. A total of 26 instruments were found which did not have provision for draining of moisture from the instrument. These will be corrected before unit restart. Repair of the LPSI pump is also nearly complete, with the unit expected to enter Mode 3 late on July 3.
An entry into the Unit 2 containment identified EQ discrepancies similar to those in Unit 3. Justification for continued operation (JCO) has been provided for all but three instruments in PPS Channel 3, which has been declared inoperable.
The resident inspector is following the licensee's outage activities. Region V and NRR are also reviewing the licensee's JCO for Unit 2.
This information is current as of 8:00 a.m. PDT on July 3, 1989.
CONTACT:
nson A. Hon FTS1 3-3745 (714) 492-2641 DISTRIBUTION BY 5520:
FAX TO:
Date Time UDTe Time Chairman Carr EDO RI INPO Comm. Roberts AEOD RH NSAC Comm. Rogers PAO RIII LICENSEE Comm. Curtiss SLITP RIV-RESIDENT INSPECTOR ACRS NRR RES HQS. OPERATIONS OFFICER SECY NMSS PDR (202)634-3343 GPA ARM MAIL TO:
CA OIA DOT:(Trans. Only, Applicable State) 0-9(7 0 C1 o IV FDR I&E FD