PNO-V-88-022, on 880316,reactor Shutdown.Caused by Increased Steam Generator Tube Leak to 200 Gallons Per Day.Outage Should Take 3-4 Wks.Unit Should Be Back on Line Approx mid-Apr 1988
| ML13302B590 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 03/16/1988 |
| From: | Johnson P, Tatum J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | |
| References | |
| PNO-V-88-022, PNO-V-88-22, NUDOCS 8803290354 | |
| Download: ML13302B590 (2) | |
ACCELERATED D1'RIBUTION DEMONSItION SYSTEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)
ACCESSION NBR:8803290354 DOC.DATE: 88/03/16 NOTARIZED: NO DOCKET #
FACIL:50-361 San Onofre Nuclear Station, Unit 2, Southern Californ 05000361 AUTH.NAME AUTHOR AFFILIATION JOHNSON,P.H.
Region 5, Ofc of the Director TATUM,J.
Region 5, Ofc of the Director RECIP.NAME RECIPIENT AFFILIATION
SUBJECT:
PNO-V-88-022:on 880316,reactor shutdown as result of steam generator tube leak.
DISTRIBUTION CODE: IE34D COPIES RECEIVED:LTR QENCL SIZE:
TITLE: Preliminary Notification-Occurrence/Non-Routine Event/Safeguards Even NOTES:
RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL INTERNAL: AEOD/DSP/TPAB 1
1 NRC OP CNTR 1
1 NRR/DOEA/EAB11E 1
1 NRR/DRIS/SGB9A1 1
1 NRR/DRIS/SIB9D4 1
1
<ijWA-S ILRB12 1
1 OE LIEBERMAN,J 1
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1 RES BROOKS,B 1
1 RES DEPY 1
1 RES FILE 1
1 RES/DE 1
1 RES/DE/EIB 1
1 RES/DRA 1
1 RES/DRAA 1
1 RES/DRPS 1
1 RES/PMPDAS 1
1 RGN5 FILE 01 1
1 EXTERNAL: DOE BARBER EV34 1
1 LPDR 1
1 NRC PDR 1
1 NSIC 1
1 R
D s
D TOTAL NUMBER OF COPIES REQUIRED:
LTTR n
ENCL 22
K, PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-V-88-22 Date 3/16/88 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 SONGS UNIT 2 Notification of Unusual Event DOCKET NO. 50-361 Alert SAN CLEMENTE, CA Site Area Emergency General Emergency XX Not Applicable
SUBJECT:
SHUTDOWN TO REPAIR STEAM GENERATOR TUBE LEAK On the evening of March 16, 1988, Southern California Edison (SCE) commenced a reactor shutdown as a result of a steam generator tube leak. The licensee first noticed a primary to secondary leak in February, 1988. However, the amount of leakage remained below 60 gallons per day (gpd, as determined by Cesium 138 concentrations) until March 15, 1988, at which time the amount increased to 77 gpd. The Technical Specifications limit for tube leakage is 720 gpd per steam generator. On the morning of March 16, the leak rate had increased to 86 gpd. As a result, SCE scheduled a reactor shutdown for the evening shift to effect repairs. A final measurement shortly before shutdown indicated that tube leakage had increased to 200 gpd. SCE expects that the outage should take 3 to 4 weeks and hopes to have Unit 2 back on line prior to the Unit 3 refueling outage which is currently scheduled for mid April 1988.
The resident inspectors are following the licensee's actions.
This information is current as of 8:00 a.m., PST, March 17, 1988 CONTACT:
P.14 hnson J. Tatum FTS 46 -3745 (714) 492-2641 DISTRIBUTION BY 5520:
FAX TO:
Date Time Date Time Chairman Zech EDO RI INPO /.'22 Comm. Roberts AEOD RH NSAC /7: 2)
Comm. Bernthal PAO RIII LICENSEE Comm. Carr SLITP RIV RESIDENT INSPECTOR
,o"";L Comm. Rogers~
NRR HQS. OPERATIONS OFFICER /.'
SECY
-*SS CA ARM MAIL TO:
PDR 01 5rSTUFiginal)
OGC OIA DOT:(Trans. Only, Applicable State)
ACRS RES GPA RV FORM 211 Revised: 8/19/87 88032,90354 880316 PDR I&E PNO. 0 2 2 DCD