PNO-I-89-008, on 890207,control Room Operators Manually Scrammed Unit 1 When Both Reactor Recirculation Pumps Tripped.Event Caused by Attempt to Start a Main Cendensate Pump.Recirculation Pumps Restarted Satisfactorily
| ML17156B028 | |
| Person / Time | |
|---|---|
| Site: | Susquehanna  |
| Issue date: | 02/08/1989 |
| From: | Blough R, Young S NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | |
| References | |
| PNO-I-89-008, PNO-I-89-8, NUDOCS 8902140431 | |
| Download: ML17156B028 (2) | |
AC CKMPATED DISj1 BUTJ ON REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)
ACCESSION NBR: 8902140431 DOC. DATE: 89/02/08 NOTARIZED:
NO DOCKET FACIL:50-387 Susquehanna Steam Electric Station, Unit 1, Pennsylva 05000387 AUTH.NAME AUTHOR AFFILIATION YOUNG,S.
Region 1, Ofc of the Director BLOUGH,R.
Region 1, Ofc of the Director RECIP.NAME RECIPIENT AFFILIATION
SUBJECT:
PNO-I-89-008:on 890207,condensate pump electrical failure I
causing plant scram.
DISTRIBUTION CODE IE34D COPIES RECEIVED:LTR ENCL SIZE:
"""""/""-"'"'"'"/'~ '"S NOTES:LPDR 1
cy Transcripts.
05000387 RECIPIENT ID CODE/NAME INTERNAL: AEOD/DSP/TPAB NRR/DRIS/RVIB NRR/DRIS/SIB 9A CS AB TRACT REG F 02 ES EPY RES/DE RES/DS IR RES/DSR DEPY RGN1 FILE 01 EXTERNAL:
DOE BARBER EV34 NRC PDR NOTES:
COPIES LTTR ENCL 1
1 1
1 1
1
.1 1
1 1
2 RECIPIENT ID CODE/NAME NRC OP CNTR NRR/DRIS/SGB 9A NRR/PMAS/ILRB12 OE LIEBERMAN,J RES BROOKS,B RES FILE RES/DRA RES/DSIR/EIB RES/PMPDAS LPDR NSIC COPIES LTTR ENCL
/
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PZZA~~E FELP US TO REDVM~! -CDTZACI'IHE IXXUMEKZ02i~L DMK, BDQ~ Pl-37 (rWZ. 20079)
TO KLZKI2VZE YOUR KQK FMH DISTIKBVZZON LZSTS FOR KKU~IS YOU IXX'T TOTAL NUMBER OF COPIES REQUIRED:
LTTR ~
ENCL 25
DCS Ho:
0387890207 Date:
February 8, 1989 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-I-89-008 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 staff on this date.
Facility:
Pennsylvania Power 5 Light Co.
Susquehanna Unit 1
Berwick, Pennsylvania Docket Ho. 50-387 Licensee Emergency Classification'.
Notification of Unusual Event Alert Site Area Emergency General Emergency X
Not Applicable
Subject:
CONDENSATE PUYiP ELECTRICAL FAILURE CAUSING PLANT SCRAM During a plant startup on February 7,
1989, at 1:10 p.m., control room operators manually scrammed unit 1 when both reactor recirculation pumps tripped.
-The unit was in the startup mode at approximately one percent power and 480 psig.
The event had started when the control room operator tried to start the "A" main Condensate pump, its current limiting capacitor failed, and a
pump breaker trip followed.
A 13 KV voltage transient was felt throughout the site distribution system resulting in a trip of both unit 1 reactor recirculation pumps and numerous other electrical ccmponen..s.
Subsequently, the recirculation pumps were restarted satisfactorily.
Because the capacitor contained
- PCBs, a toxic substance, the licensee ha 1 mited access to, the area and is making preparations to remove and dispose of the hazardous material.
The necessary repairs to the "A" Condensate pump will be worked in conjunction with the planned startup.
Licensee management has formed a task fo'rce to evaluate this event and is frequently communicating with Region I management.
The resident staff is onsite and regional support has been dispatched to support review of the event.
The licensee is presently taking the unit to cold shutdown until an evaluation of the scram and voltage transient have been completed.
The licensee hopes to complete the evaluations and return to power operation later this week, but is committed to a thorough review of this event, and briefing of NRC before plant restart.
The Commonwealth of Pennsylvania has been informed.
CONTACT:
S.
Young R. Blough (717) 542-2134 (FTS) 346-5146 DISTRIBUl ION:
ONFH Chairman Zech Comm.
Roberts Comm.
Carr Comm.
Rogers Comm. Curtiss SECY HMSS CA HRR OGC OIA GPA'I Pn SLITP EOO OE MHBB H-St.
'CRS ARYi PDR OGC Regional Offices NL RES Yia il:
ADM:DMB DOT:Trans o..ly NRC Ops Ctr IHPO----
NSAC----
RI Resident Office Licensee:
(Reactor Licensees)