ML19290D762
| ML19290D762 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 02/19/1980 |
| From: | Hinrichs G JERSEY CENTRAL POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML19290D760 | List: |
| References | |
| IEB-79-14, NUDOCS 8002250531 | |
| Download: ML19290D762 (2) | |
Text
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t Date of Occurrence:
Tabruar_y 15, 1980 iute of verbal no t if ication:
February 13, 1980 Time of initial Writtan Occurrence:
aeport Date:
February _I1 _l,9_80 OYSTER CnEEW NJCLEAR GENERATING STATION FORKt0 RIVER. NEW JERSEY 08731 Reportabic Occurrence
't Y
- }hi.1A DD Report No. 50-219/80/8-1P ad.
ot o Durino verif tration of as-built conditions for piping hangers, it was noticed that nine (9) pipe clamps on piping to the isolation IDENTIFICATION Or OCCURRENCE: condensers were not properly installed. This avent is considered to be a reportable occurrence as defined in the Technical Spoc i fications, paragraph 6.9.2.a. ( 9). Routina Shutdown i CN111 T10NS Pu t0R Staady 5 tate Power Hot Standby Operation 10 GCCilRRENCE: Cold Shutdown Lnad Changes Durino Routina power Operation X pafueltnu Shutdown Other (Specify) Routina Startup Operation Reactor subtri tical. Raactor moda switch locked in refuel. Cavity flooded.
- 15. 1980. durino the inspection required for On Friday. February DESCR I F110*f IF Rullatin 19-14. nine pipe clamos were discovered improperly GF OCCURRENCC-Installed.
The clamps which cnnnect snubbers to pipe to the isolation condensars were not welded to the pipe. The snubbers, referenced by Bergen-Patterson Drawing, are numbered: as 632R1 633R1 632P? 633R? 63243 633A3 63?P4 633R4 632R7 APPApFNT cat 15E pasion Proc edure Unusual Service Condition ~~ Of OCC11RRENCE: Manufactura ~ Inc. Environmental X installation / I.ons truc t ion Component Failure Operator Other (Specify) The pipe clamps were not welded to the pipe. 80 022 50 LT3 l
Aoportable occorranca Report No. S0-219/80/H-IP Page 2 AMAIJsl5 OF Tha.nubbers are a ttriched to the pipa clamps in three different CCCIIRRENC E: macho.tc. Gna mal.hmt is conne:tino tha snubber i f na of direction t Srmnen t ha cantar i in* o f tha pipe. This method does not wel4tinq of riamp to the pipe becausa no sliding can raquara The necur. otnar methods of attachment ara ax lal and torsional. Thasa two machods require welding of the clamo to the pipe bacausa thera would be a possibility of the clamp sliding during a saismic event. The purpo== of e.na Isola tion Condenser System it to depressurize the reactor and to remove ranctor decay heat in the event that tha turhine qanerator and main condenser are unavailable as a heat s ink. The system consists of tw loops, each capable of accomplishina the purpose of the system. CGRRFCTIVF. To be determinod at a later date. ACTION: FA! LURE DATA: N/A 9**D ~& hk _3 m m.1 R L ^ a- .\\ 7 Prepared by: ~ ~ * ' s Date: ' ' ' ? /,C.. Qry hinricrw .. _. -...... -}}