ML20084D205

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AO 50-219/74/31:on 740519,one Bergen-Paterson Hydraulic Shock & Sway Arrestor on South Core Spray Sys Found Inoperable.Caused by Loss of Hydraulic Fluid.Seven Units Replaced W/Units Equipped W/Ep Seals
ML20084D205
Person / Time
Site: Oyster Creek
Issue date: 05/20/1974
From: Carroll J
JERSEY CENTRAL POWER & LIGHT CO.
To: James O'Reilly
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
AO-50-219-74-31, NUDOCS 8304080495
Download: ML20084D205 (6)
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To: J ar;e u P. O'1:ei1ly y lii rect ora t e of lacy,u l t.t ory Operat l on:.

P.el:i on 1 631 Pa rl. Aventie 1:ing of Pro:.si a, l'cini::y l van i a 1910f>

l' rou : Jersey Cent ral Po.se r r, l i p,h t Co: p,iny Oyst er C r ee? .';ncl ea r Gene ra t i nr. :; t at i on , th)cl,et 50-219 l' oil.et! I:i ve r, lleiv Je rsey O M7.il S .li.i ce t : N>no rma l Occu rrt nce Ib' port .-! o . 50-219/71/31

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8304080495 740520 PDR ADUCK 05000219 PDR *;

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Initial TcIcphone Date of l I:e, sort Dat c: _5/20/74 5/19/74 Jrii t i a l-1lri t t en '

U OccurrencO Time of

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Reydrt Date: 5/IO/74 Occurren c.e : 1530 i

. ,i OYSTER CitEEK !;UC1. EAR GENERATING STATIO:1 FORKED RIVER, N1N JERSEY 08731 '

- i Abnornal occurrence '

Report No. 50-219/74/ R j i

IDENTIFICATION Violation of the Technical Specifications, paragraph N/ A _ ,

OF OCCURRESCE:

Inoperability of one I:crgen-Paterson !!ydraulie Shock and Sway l Arrestor located on the South Core Spray Systen in the Reactor

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'ihis event ir, considered to be an abnor:aal occurrence as de- i fined in the Technical Specifications, paragraph 1.15D .

CONDITIONS PRIOR TO OCCURDESCli: Steady State Power Routine Shutdown llot Standby Operation Cold Shutdoun 1.oad Changes During

, X_ Refueling Shutdown Routine Power Operation Rout ine Start u1) Ot her (Sneci f.v)

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DiiSCRW1103 An 11.spection of the Reactor fluilding snubbers, Bergen- l OF OCCul:lUINCll:

Paterson Type llSSA-10, located two inoperable units and five 1 j

leaking units. They are as follows: t

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T l Abdurnal Occurrence i P.eport No. 50-219/74/31 Page 2 _

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Unit System Condition Elevation 477287 Containuent Spray Fai1ed -19' 469873 Containment Spray 1, cal i ng 23' 469903, Shut du.-;n Cooli ng 1,caling 51' 4698% Core Spiay 1,cahing 75' 469855 Core Spray Failed 75' 4878 5 11 linergency Cond. Leaking 75' 477170 A. Energency Cond. I.enLing 75' APPARENT CAUSli X Design Procedure OF OCCllRRiiNCE: Manu f act u re linusual Service Condition Installation / Inc. Envir onment al Const ruct i on Con:ponent Failure Operator _ Other (Specify)

The cause of failure of the Core Spray System snubber was a loss of the hydraulic fluid. This snubber has not been rebuilt since April 1973 and probably has never been rebuilt . The type of seal material in this unit is of the millabic r,un 1)olyure-thane or cast polyurethane type.

ANALYSIS OF The safety significance of this occurrence was a partial loss OCCllRRiiNCE :

of the seismic rest raining ability for the affected system. Ilad the plant suffered a design basis earthquake, the probability t h at this system would have suffered structural damage was in-creased.

G)!ml CrlVE The scven units were replaced with units equipped with EP seals Acr10N:

and pressure tested to 4000 psi.

FAILURl! DATA: Manufacturer: lle rgen-Pate rs on Type: ilSSA-10 l

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. aso,' Date: 5/20/74

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O O To: James P. O'P.e!Ily Directorate of Regulatory Operations Region I ,

631 Park Avenue King of Prussin, Pennsylvanin 19406 From: . Jersey Central Power 6 Light Cot-pany

- Oyster Crook Nucicar Gonorating Station, Docket #50419 Forked Itiver, New Jersey 08751

Subject:

Abnomal Occurrence Report No. 50-219/74/31 1 The following is a. preliminary rsport being submitted in compliance with the Technical Specifications

. paragraph 6.6.2. -

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j , Prolin:inary Approval:

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[J. T. Carroll, Jr. M Date cc: Mr. A. Giambusso 9

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Report Date: 5/20/74_ Occurrenco: 1530 0YSTER CREEK NUCLEAR GENERATING STATION FORKED RIVER, NEW JERSEY 08731 Abnornal Occurrence Report No. 50-219/74/ 31 -

IDFXfIFICATION Violation of the Technical Specifications, paragraph N/A ,

OF OCCURRENCE: Inoperability of one Bergen-Paterson Hydraulic Shock and Sway Arrestor locate'd'on tho South Core Spray System in the Reactor Building.

'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

_ Ilot Standby Operation

_ Cold Shutdown Load Changes During X Refueling shutdown Routine Power Operation

_ Routine Startup Other (Specify)

Operation u

DESCRIPTION An inspection of the Reactor Building snubbers, Borgon-0F OCCURRENCE:

Paterson Type itSSA-10, located two inoperable units and five

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leaking units. 'Ihey are as follows:

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Systen. Cond!t n EIevation

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469903 Shutdown Cooling Leaking 51' 469846 Core Spray . !Aaking 75' 469855 Core Spray Failed' 75' 487465 B. Ernorgency Cond. Leaking 75' 477170 A. Emergency. Cond. Leeking 75' APPAREITT CAUSn 1 Design Procedure .

OP' OCCURRENG: Manufacturo thusual Service Condition Installation / ~~ Inc. Environr., ental Construction Component Failure Operator -Other (Specify) ,

The cause of failure of the Core Spray System snubber was. a-loss of the hydraulic fluid. This snubber has not boon'robuilt since Apri1.1973'and probably has-never born rebuiIt. The type

- of scal material in this unit is of the millable. gum polyure-

. thane or cast polyurethane type. -

ANALYSIS OF Tho. safety significance of this occurrence was n partini loss GCCURRENW:

.of the seismic restraining ability for the affected system. Had~

the pInat suffered a design basis earthquake, the probability that this syste.s3woul'.d"havo sufferedistructural'dsmage'.was in-e 5J' .;# A;.s .--4 .,a., 3 4 . ,5, creased..

(XIPJtECTIVB *Ihe seven units were replaced with units equipped with EP seals ACTION: r '

and ' pressure tested to 4000 psi.

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FAILURiiDATN: Manufacturcri' BergenuPaterson  ; ,

Type; HSSA-10 , f

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