ML17309A154: Difference between revisions

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=Text=
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{{#Wiki_filter:LER81-007/3L-0 LICENSEEEVENTREPORTCAR13001)3)4)7)8)10)ControlBlock:LicenseType:I4',1'1,',1',1',DocketNumber:I0I50002EventDate'IOI11II11EventDescription andProba2)LicenseeCode'.'N'Y',R',E',G 0I0'0I-I0I0',5Cat:II/6)ReportSource9ReportDate'0'5'1111811 IbleConsequences:
{{#Wiki_filter:LER 81-007/3L-0 LICENSEE EVENT REPORT CAR 1300 1)3)4)7)8)10)Control Block: License Type: I 4', 1'1,',1', 1', Docket Number: I 0 I 5 0 0 0 2 Event Date'IOI 11 I I 11 Event Description and Proba 2)Licensee Code'.'N'Y',R',E',G 0 I 0'0 I-I 0 I 0', 5 Cat: I I/6)Report Source 9 Report Date'0'5'1111811 I ble Consequences:
~ILI~IIeIDurinsteadystateoperation alossofthe34.5KVsupplytofINo.12transformser occuredcreatingalossofoffsitepower/,toannatation.iscreatedalossofpowerto1Iussesand1andsaeguarbussesan11.Emergency D/G's1Aand1Bstartedonundervoltage signalIIandsuppliedpowertotheOVsafeguard busses.Thetemporary IIinterruption totheowersupplyforthe1Binstrument bus11)14)17)18)21)23)25)27)SystemCode'EAI12)CauseCode:',E',13)CauseSubcode:IAIComp.Code:/,~C/K/T/BIRIKI 15)Subcode;/X/16)ValveCode:jZ/~'-''7'/'ction Taken:IX'19)FutureAction:',Z',20EffectonPlant:',B',ShutdownMethod:IZI22)Houls'0I010I5IPrimeComponent Supplier:
~I L I~I I e IDurin steady state operation a loss of the 34.5KV supply tof INo.12 transformser occured creating a loss of offsite power/,to anna tation.is created a loss of power to 1 I usses and 1 and sa eguar busses an 11.Emergency D/G's 1A and 1B started on undervoltage signalI I and suppl ied power to the OV safeguard busses.The temporary I Iinterruption to the ower supply for the 1B instrument bus 11)14)17)18)21)23)25)27)System Code'E A I 1 2)Cause Code: ', E', 1 3)Cause Subcode: I A I Comp.Code:/,~C/K/T/BIRIKI 15)Subcode;/X/16)Valve Code:jZ/~'-''7'/'ction Taken: IX'19)Future Action: ',Z', 20 Effect on Plant: ',B', Shutdown Method: I Z I 22)Houl s'0 I 0 1 0 I5 I Prime Component Supplier: IL I 26)Manufacturer:
ILI26)Manufacturer:
',J',1'I~2,0', Cause Description and Corrective Actions: ',The cause was identified to a fault in the"B" Phase vacuumf',breaker switch which supplies the 12B spare transformer.,The 12 transformer was isolated from the 3.5KV bus and power>',was restored to the No.12 transformer.
',J',1'I~2,0',
The safe uard busses', ,were transferred bac to t eir normal supply and the emerpency',',Diesel Generators secured.28)30)31)32)33)35)36)37)39)40)41)42)43)44)45)Facility Status: ',E', Other Status: 1N/A1 Method of Discovery:
CauseDescription andCorrective Actions:',Thecausewasidentified toafaultinthe"B"Phasevacuumf',breaker switchwhichsuppliesthe12Bsparetransformer.
IAI Discovery Description~IOperator Ob Activity Released: I Z I 3 Content Amount of'ctivity:,I/A I Location of Release:/N/Al Personnel Exposures Number: 10 0 I 0 I
,The12transformer wasisolatedfromthe3.5KVbusandpower>',wasrestoredtotheNo.12transformer.
Thesafeuardbusses',,weretransferred bactoteirnormalsupplyandtheemerpency',
',DieselGenerators secured.28)30)31)32)33)35)36)37)39)40)41)42)43)44)45)FacilityStatus:',E',OtherStatus:1N/A1MethodofDiscovery:
IAIDiscovery Description~IOperator ObActivityReleased:
IZI3ContentAmountof'ctivity:,I/A ILocationofRelease:/N/AlPersonnel Exposures Number:100I0IDescription:
',N/AIPersonnel InjuriesNumber:',0',0',0',


==
== Description:==
Description:==


IN/AILossoforDamagetoFacility:
', N/A I Personnel Injuries Number: ',0',0',0',
IZIDescription:
IN/AIPublicity Issued:INIDescription:
/N/AlIOI9I5Iservationi ofRelease:IZI38)Exposures Type:',Z',NRCUSEONLYNameofPreparer:
ClairEdgarPhone:315-524-4446 x248


ATTACHMENT TOLERFORM10)EventDescription andProbableConsequences contd:'causednumerousalarmsandanapproximate 105runbackto',5nuclearpower.Conditions werestablized byoperationsI
== Description:==
<personnel andplantoerationcontinued.
 
IN/AI Loss of or Damage to Facility: I Z I
 
== Description:==
 
I N/A I Publicity Issued: I N I
 
== Description:==
 
/N/Al IOI9I5 I servationi of Release: IZI 38)Exposures Type: ', Z', NRC USE ONLY Name of Preparer: Clair Edgar Phone: 315-524-4446 x248
 
ATTACHMENT TO LER FORM 10)Event Description and Probable Consequences contd: 'caused numerous alarms and an approximate 105 runback to', 5 nuclear power.Conditions were stablized by operationsI
<personnel and plant o eration continued.
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Revision as of 11:16, 6 July 2018

LER 81-007/03L-0:on 810418,loss of 34.5-kV Supply to Transformer 12 Occurred,Creating Loss of Offsite Power. Caused by Fault in B Phase Vacuum Breaker Switch Which Supplies Spare Transformer 12B
ML17309A154
Person / Time
Site: Ginna Constellation icon.png
Issue date: 05/11/1981
From: EDGAR C
ROCHESTER GAS & ELECTRIC CORP.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML17258B043 List:
References
LER-81-007-03L, LER-81-7-3L, NUDOCS 8105180308
Download: ML17309A154 (4)
v • d • e


Text

LER 81-007/3L-0 LICENSEE EVENT REPORT CAR 1300 1)3)4)7)8)10)Control Block: License Type: I 4', 1'1,',1', 1', Docket Number: I 0 I 5 0 0 0 2 Event Date'IOI 11 I I 11 Event Description and Proba 2)Licensee Code'.'N'Y',R',E',G 0 I 0'0 I-I 0 I 0', 5 Cat: I I/6)Report Source 9 Report Date'0'5'1111811 I ble Consequences:

~I L I~I I e IDurin steady state operation a loss of the 34.5KV supply tof INo.12 transformser occured creating a loss of offsite power/,to anna tation.is created a loss of power to 1 I usses and 1 and sa eguar busses an 11.Emergency D/G's 1A and 1B started on undervoltage signalI I and suppl ied power to the OV safeguard busses.The temporary I Iinterruption to the ower supply for the 1B instrument bus 11)14)17)18)21)23)25)27)System Code'E A I 1 2)Cause Code: ', E', 1 3)Cause Subcode: I A I Comp.Code:/,~C/K/T/BIRIKI 15)Subcode;/X/16)Valve Code:jZ/~'-7'/'ction Taken: IX'19)Future Action: ',Z', 20 Effect on Plant: ',B', Shutdown Method: I Z I 22)Houl s'0 I 0 1 0 I5 I Prime Component Supplier: IL I 26)Manufacturer:

',J',1'I~2,0', Cause Description and Corrective Actions: ',The cause was identified to a fault in the"B" Phase vacuumf',breaker switch which supplies the 12B spare transformer.,The 12 transformer was isolated from the 3.5KV bus and power>',was restored to the No.12 transformer.

The safe uard busses', ,were transferred bac to t eir normal supply and the emerpency',',Diesel Generators secured.28)30)31)32)33)35)36)37)39)40)41)42)43)44)45)Facility Status: ',E', Other Status: 1N/A1 Method of Discovery:

IAI Discovery Description~IOperator Ob Activity Released: I Z I 3 Content Amount of'ctivity:,I/A I Location of Release:/N/Al Personnel Exposures Number: 10 0 I 0 I

Description:

', N/A I Personnel Injuries Number: ',0',0',0',

Description:

IN/AI Loss of or Damage to Facility: I Z I

Description:

I N/A I Publicity Issued: I N I

Description:

/N/Al IOI9I5 I servationi of Release: IZI 38)Exposures Type: ', Z', NRC USE ONLY Name of Preparer: Clair Edgar Phone: 315-524-4446 x248

ATTACHMENT TO LER FORM 10)Event Description and Probable Consequences contd: 'caused numerous alarms and an approximate 105 runback to', 5 nuclear power.Conditions were stablized by operationsI

<personnel and plant o eration continued.

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