ML19207B085
| ML19207B085 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 08/08/1979 |
| From: | Quintenz T JERSEY CENTRAL POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML19207B082 | List: |
| References | |
| NUDOCS 7908230355 | |
| Download: ML19207B085 (1) | |
Text
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Initial Telephone Date of Report Date:
August 7, 1979 Occurrence:
Auaust 7, 1979 Initial Written Time of Report Date:
August 8, 1979 Occurrence:
1500 OYSTER CREEX NUCLEAR GENERATING STATION FORKED RIVER, NEW JERSEY 08731 Reportable Occurrence Report No. 50-219/79/27-lP IDENTIFICATION Discovery of four seismic restraints for the 6 inch core spray 0F OCCURRENCE:
test line, which were either in positions other than required by original design criteria or had failed.
This event is considered to be a reportable occurrence as defined in the Technical Specifications, paragraph 6.9.2,a,9.
C0NDITIONS PRIOR X
Steady State Power Routine Shutdown TO OCCURRENCE:
Hot Standby Operation Cold Shutdown Load Changes During Refueling Shutdown Routine Power Operation Routine Startup Other (Specify)
Operation Power:
Core 1909.16 KWt Electric 639 KJe Flow:
Recirculating 15.2 x 104 gpm Feedwater 7.143 x 106 lb/hr Stack Gas Activity:
27,900 uci/sec DESCRIPTION On Tuesday, August 7, 1979, during an inspection of seismic 0F OCCURRENCE:
restraints associated with Core Spray System II, it was determined that two seismic restraints' (NZ-2-R5 and R9) clamps were not in their as-built position. Additionally, one restraint, NZ-2-R7, was found to have its wall attachment bolts sheared, rendering this restraint inoperable. The structural configuration of the fourth restraint was found to have been altered by some mechanism not yet determined. All of the restraints are connected.to the 6 inch test line for Core Spray System II.
79082303 {
4 Reportable Occurrence Page 2 Report No. 50-219/79/27-lP APPARENT CAUSE Design Procedure 0F OCCURRENCE:
Manufacture Unusual Service Condition Installation /
Inc. Environmental Construction X
Component Failure Operator Other (Specify)
The cause of the discrepancies and failures is under investigation.
ANALYSIS OF Until further investigation is performed, Core Spray System II OCCURRENCE:
has been considered inoperable, because of the number and location of the restraints affected.
CORRECTIVE Work is underway to restore the restraints to their as-built ACTION:
condition. Until the discrepancies have been corrected, Core Spray System II will be considered inoperable and Core Spray System I will be on an accelerated surveillance schedule as per the Technical Specifications, paragraph 3.4,A,3.
FAILURE DATA:
Piping restraints designed by:
Bergen Patterson Pipe Support Company Clifton, N.J.
Prepared by:
Date:
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