ML19347C804

AO 50-219/74/3:on 740113,during Insp of Bergen-Paterson HSSA-10 Units Primary Containment Hydraulic Shock & Sway Arrestors Found Devoid of Fluid.Cause Under Study.Units to Be Replaced W/Units Rebuilt W/Ethylene Propylene Seal Matl

ML19347C804
Person / Time
Site:	Oyster Creek
Issue date:	01/14/1974
From:	Rone A JERSEY CENTRAL POWER & LIGHT CO.
To:
References
AO-50-219-74-3, NUDOCS 8103040604
Download: ML19347C804 (2)

Text

Initini Telhphon5 Dtte cf Report Datt;<: 1/14/74 Occurrence ,, 1/13/74 l lidtiniWritten Time of

' leport Date: 1/14/74 Occurrence: 1700

~

OYSTER CREEK NUCLEAR GENEPATING STATION

' FORKED RIVER, NEW JERSEY OS731 Abnormal Occurrence

. Report No. 50-219/74/ 3 IDE.DIFICATION Violation of the Technical Specifications, paragraph N/A ,

Failure of Hydraulic Shock and Sway Arrestors on one Core

. Spray System and two Isolation Condenser systems.

.~

'Ihis event is considered to be an abnormal occurrence as de-fined in the Technical Specifications , paragraph 1.15D .

CONDITIONS PRIOR

• TO OCCURRENCE: Steady State Power Routine Shutdown Hot Standby Operation A Cold Shutdown Load Changes During Refueling Shutdown Routine Power Operation Routine Startup Other (Specify)

Operation

-The plant was shutdown with reactor coolant at <212 F.

DESCRIPTION During the required inspection of.the Bergen P.aterson HSSA-10 0F OCCURRENCE: units in the primary containment, five units were discovered to be devoid of fluid. They were located as follows:

3 "A" Isolation Condenser

1. "B" Isolation Condenser 1 - Core Spray System #2 i

{

l f/Mo O6O THIS DOCUMENT CONTAINS POOR QUAL.lTY PAGES

Abn;r:n1 Occurrence f._ ,

Reptrt No. 30-219/74/ 3

( Page 2 r . .

t .

APPAREST CAUSE Design Procedurc 0F OCCURRENCE: F!anufacture Unusual Service Condition Installation / Inc. Environmental Construcrion Component Failure

. Ope rator Other (Specify)

The cause of snubb'cr inoperabil'ity was due to a loss of

. hydraulic fluid. 'Ihc cause of fluid loss is presently

. . under investigation.

ANALYSIS OF The safety significance of tis occurrence was a partial O CCU.Y.E.NCE : Icss of the seismic rer,trnining ability for the ts o affected systccs. 1:ad the plant suffered a design bases carthouake, the probability that these two systems would hz.ve suffered structural damage was increased. CORRECTIVE The failed units were replaced with units that were rebuilt ACTION: with ethylene propylene (Parker Grade E652-90) seal material. e FAILURE DATA: Flanufacturer: Bergen Paterson Type: ilSSA-10 Scrial Nos.: 487S17 4874S7 ! 477376 470924 469962 r .O Prepared by: . .I '.' f

• _ c' .Date: I/14/74 l.

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