ML20084D228
| ML20084D228 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 04/18/1974 |
| From: | Carroll J, Reeve P JERSEY CENTRAL POWER & LIGHT CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| AO-50-219-74-27, NUDOCS 8304110011 | |
| Download: ML20084D228 (6) | |
Text
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if (APR24H14d To:
. James P. O'Reilly g n.,,
Q Directorate of Regulatory Operations c:xxt g.
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King of Prussia, Pennsylvania 19406 q
From:
Jersey Central Power G Light Company Oyster Creek Nuclear Generating Station Docket #50-219 Forked River, New Jersey 08731
Subject:
Abnormal Occurrence Report No. 50-219/74/ 27
% fniinuing ic p utininorj report being rubritted a
in compliance with the Technical Specifications paragraph 6.6.2.
Preliminary Approval:
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4/18/74
- d. T. CarroII, Jr.[
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Mr. A. Gianbusso/
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8304110011 740418 PDR ADOCn 05000219 S
PDR COPY SENT REGION
Initial Telephone Dato of Rr.: port Date:
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/74 Occurrenc( )
4/17/74 Jf.
- l Initial Written Time of Report Date:
4/18/74 1500 Discovery:
OYSTER CREEK NUCLEAR GENER< TING STATION FORKED RIVER, NEW JERSEY OS731
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Abnormal Occurrence Report No. 50-219/74/ 27 IDENTIFICATION Violation of the Technical Specifications, paragraph N/A OF OCCURRENCE:
Failure of three hydraulic shock and sway arrestors (two located on the main steam line and one on the feedwater line).
This event is considered to be an abnormal occurrence as de-fined in the Technical Specifications, paragraph 1.15D CONDITIONS PRIOR TC OCCURRENCE:
_ Steady State Power Routine Shutdown
!!ot Standby Qperation Cold Shutdown Load Changes During X
Refueling Shutdown Routine Power Operation Routine Startup Other (Specify)
Operation The plant was shutdown with reactor coolant'<212 F and in the process of preparing for refueling operations.
DESCRIPTION On April 17, 1974, an inspection was conducted of all Bergen OF OCCURRENCE:
Paterson hydraulic shock and sway arrestor units installed in the drywell. As a result of this inspection, three units, re-built in September 1973 with molded polyurethane material, were found inoperable as determined by the absence of fluid level indication in the accumulators. The inoperable units were as follows:
L
A,%riormal Occurrence
. Report No. 50-219/74/27 Page 2 Serial #
System Elevation 4
- 487530 South Main Steam 23' 487512 South Main Steam 51' 487S19 South Feedwater 51'
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APPARENT CAUSE Design Procedure OF OCCURRENCE:
hhnufacture Unusual Service Condition Installation /
Inc. Environmental Construction Component Failure Operator Other (Specify) i None of the units have as yet been disassenbled and, conse-quently, the failure mechanism is unknown at this time.
I ANALYSIS OF Had the design seismic event occurred during power operation, OCCURRENCE :
the restraining capabilities of these units may have been seriously impaired and, consequently, degraded the structural integrity of the steam and feedwater lines in question.
CORRECTIVE Current plans are to replace these units and others in the ACTION:
primary containment which still contain molded polyurethane material with units rebuilt exclusively with ethylene propylene l
material.
FAILURE DATA:
Manufacturer:
Bergen-Paterson Type: HSSA-10 Serial Nos. : 487530 487512 487519
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Prepared by:
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Date:
4/18/74 n.
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To:
James P. O'Reilly Directorate of Regulatory Operations Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406 Prom:
Jersey Central Power 6 Light Company Oyster Creek Nuclear Generating Station Docket 850-219-Forked River, New Jersey 08731-
Subject:
Abnormal Occurrence Report No. 50-219/74/ 27
'Ihe following is a preliminary report being submitted in compliance with the Technical Specifications paragraph 6.6.'2 Preliminary Approval:
/74/g/
4/18/74
. T. Carroll, Jr.[
Date cc: Mr. A. Giambusso O
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Time of O
Report < Dato:
4/18/74 1500 Discovery:
0YSTER CREEK NUCLENI GENERATING STATION FORKED RIVER, NEW JERSEY 08731
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Abnormal Occurrence Report No. S0-219/74/ 27 IDENTIFICATION Violation of the Technical Specifications, paragraph N/A
~
OF OCCURRENCE:
Failure of three hydraulic shock and sway arrestors (two located on the main steam line and one on the feedwater line).
This event is considered to be an abnormal occurrence as de-fined in the Technical Specifications, paragraph 1.150 CONDITIONS PRIOR TO OCCURRENCE:
_ Steady State Power Routine Shutdown Hot Standby Operation Cold Shutdown Load Changes During
~
X Refueling Shutdown Routine Power Operation
~
Routine Startup Other (Specify)
Operation khe plant was shutdown with reactor coolant <212*P. and in the process of preparing for refueling operations.
DESCRIPTION On April 0F OCCURRENCE:
17, 1974, an inspection was conducted of all Bergen Paterson hydraulic shock and sway arrestor units installed in the drywell.. As a result of this inspection, three units, re-built in Septeder 1973 with molded polyurethane material, were found inoperablo as detomined by the absence of fluid level indication in the accumulators. The inoperable units were as follows:
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System levation 487530 South Main Steam 23'-
487512 South Main Steam 51' 487519 South Pecdwater 51' APPARENT CAUSE Design
_ Procedure OP OCCURRENCE:
Hanufacture Unusual Service Condition Installation /
Inc. Environmental Construction Component Failure
_ Operator Other (Specify)
None of the units have as yet been disasser. bled and, conse-quently, the failure mechanism is unknown at this time.
ANALYSIS OF Had the design seismic event occurred during powe operation, OCCURRENCE:
the restraining capabilities of.these units may have been seriously impaired and, conscquently, degraded the' structural integrity of the steam and feedwater lines in question.
CORRECTIVE Current plans are to replace these units and others in the l
ACTION:
primary containcent which still contain molded polyurethane material with units rebuilt exclusively with ethylene propylene
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c PAILURE DATA:
Hanufacturer:
Bergen-Paterson l
Typo:
HSSA-10 l
Sedal Nos.:
487530 1
487512 487519 4
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