ML20090D776
| ML20090D776 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 03/20/1975 |
| From: | Carroll J JERSEY CENTRAL POWER & LIGHT CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| AO-50-219-75-07, AO-50-219-75-7, NUDOCS 8303020352 | |
| Download: ML20090D776 (3) | |
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Directorate of Regulatory Op> rations Region I 631 Park. Avenue King. of Prussia, Pennsylvania 1940G Froar Jorsey Contral Powcr 6 Light Company Oyrter Creek Nucionr Genortting Station Docket.#S0-219 Porked River, New Jersoy 03731 r.
Subject:
Abnomal Occurrence Report No. 50-219/7(( 7 The fo11 cuing is a preliminary mport being submitted in complicnce with the Technical Specifications paragraph 6.6.2.
Proliminary Approval:
W7,_
/20J76
.L.T.Ccrroll,JY.
Dato cc: Mr. A.. Giambusso 8303020352 750320 PDR ADOCK 05000 s
4-1e1.Tolcphano rt Osto 3/20/75 O
to =cf currence:
3/19/75 ial W4tten Ticn of rt Cito:
3/20/75 Occurrenec:
14C0 0YSTER CREEK In!CLEllR GEtlERATIES STATION FDPRED RIVER,4(al JERSET G3731
~_
Abnonsal occurrence Report Ho. 50-219/75/7 TIFICATIO'i Violation of the Technical 5pecifications, paragraph II/A.
1=
- CURREtiCE
Failure of dehumidtfying hestor (DiC-1-5) in standby gas trea
.E system Wo. I to energize upon system initiation.
~
This. event is considared to be ~cn abnormal occurrsace.as daffned in the Tecitnical-Specifications, paragraph ~-Is1SD.
TIO:tS PRIOR 1
- Stoady State Power Routine 5festdot:n 40RRalCE:
Hot.3tendby Operation
~
~
Cold Shutdattu toad Chs.vs During 'en
=
Refueling Shuttaan Ecutine Pc: tar O
(
Ocutine Startup Other (Specify)psmt Operation The major plant parenters at the tina of the event were-as follows:
Power:
' Thermal 1848 tett
' Electric.649 I?.!e 71c:1:
Secirc EB.3 X 300 lb/hr
~
-Feed ~6.08 21D* lb/hr
' Stock ' Gas 4 600 cei/sec IPTIUN "At 1450 on Warch 19,1975. while perforniing ths mutino riectly CURRD.'CE:
surveillence test of:the stand Ay gas treatment systers:_(CGTD),
f it was observed that the dahumidtfying ihacter stC-1-5 -in SGTS Wo. -1 failed.to initicto.
An -investication was ; initiated 7,o dotormine 'the cease of ~the failure.
It should be stotad that SGTS no. 2 was observed to function -*atisfactorfly at the tints I_
ef this. event.
mul Occurrence
~
>rt Dr. 60-219/75/7 O
~
r RENT CNJ3E
-Gesir.n PITcedsro iCCURRENCE:
tar.ufac'ture Unusual-Service Ccndtt Installation /
Inc. Envirn = nt(t Ecastruction X
Component Failwa Operator Other (Specify)
The cause of the failure ess traced to a stuck cir rely in. ATA Penel 15.
The air relay functions to initiate threa.(3) l dehu:nidtfying heaters which together forti heater'Ef!C-1-5 in'
$GTS'No. 1.
' SIS OF The dehumidifying tanters act.in conjunction with :the -pref 11 tat QEHCEt to reduce tha relative humidity of the inletair to tfm chrcot
. cod liEPA f11 tors to a taximum of 705.
This is required to echieve maxhnum.cbsorbsion officiency.of the chprccal. bed f.w gasicus iodine and to prevent damage to the HEPA filters.
Sin:
the dehumidifying heators failed to operate, it can be coru:1ude that the.absorbtive efficiency of the charcoal flitars would have been reduced and:poss~1ble rJtysical datage to the HEPA filters could shave resulted.
XIVE The air reky seas "toppad" and observed to then aparate 1:
satisfactorily.
Further action on this mattor is psading TORC revic:r.
!' DATA:
Johnson Scrvice:Cospr.ny
'. Air. Switching 1/alva N-5133 1111xctdcoe. Disconsin h