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| {{Adams
| | #REDIRECT [[05000315/LER-1979-020-03, /03L-O on 790323:pressurizer Relief Tank Rupture Disk Blew Out While in Mode 3.Caused by Repeated Pressure Fluctuations Causing Rupture Disk to Weaken.Corrective Action Unnecessary Since Doors Functioned as Designed]] |
| | number = ML17317B112
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| | issue date = 04/17/1979
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| | title = LER 79-020/03L-O on 790323:pressurizer Relief Tank Rupture Disk Blew Out While in Mode 3.Caused by Repeated Pressure Fluctuations Causing Rupture Disk to Weaken.Corrective Action Unnecessary Since Doors Functioned as Designed
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| | author name = Dickson J
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| | author affiliation = INDIANA MICHIGAN POWER CO.
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| | addressee name =
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| | addressee affiliation = NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
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| | docket = 05000315
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| | license number =
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| | contact person =
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| | document report number = LER-79-020-03L, LER-79-20-3L, NUDOCS 7904240380
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| | package number = ML17317B111
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| | document type = LICENSEE EVENT REPORT (SEE ALSO AO,RO), TEXT-SAFETY REPORT
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| | page count = 2
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| }}
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| | |
| =Text=
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| {{#Wiki_filter:NRC FORM 366 U S NUCLEAR REGULATORY COMMISSIOPJ
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| {7.77)
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| ENSEE EV ENT REPORT 4
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| CONTROL BLOCK: Qi (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATIONI I 6
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| [oOtJ 7 8 9 M I D LICENSEE CODE C C 1 14 Q20 15 0 0 0 0 0 0 LICENSE NUMBER 0 0 0 0 25 Q34 26 1 1 1 LICENSE TYPE 1
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| 30 QE~QE 57 CAT 68 CON'T sRDIJRGTE ~LO 5 Q 0 3 2 3 Qs0 4 I 7 7 9QB 8 60 61 DOCKET NUMBER 68 69 EVENT DATE I4 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES Q10
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| ~O M A. PRESSU IZ
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| ~03 THE PRESSURE .SURGE 'CREATED IN THE LOWER CONTAINMENT THE ICE CONDENSER INLET
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| ~o4 DOORS WERE SHOWN TO BE IN THE OPEN POSITION BY CONTROL PANEL INDICATIO . T IS
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| ~06 IS NOT CONSISTENT WITH THE RE UIREMENTS OF T.S. 3.6.5.3. ALL DOORS WERE MANUALLY
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| ~os CLOSED WITHIN 1.5 HOURS. NO PROBABLE ONSE UEN S.
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| ~OS 7 8 9 80 SYSTEM CAUSE CAUSE COMP VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE
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| ~SA 9
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| Q>> X Q12 ~ZQE Z Z Z Z 2 Q14 ~ZQ>> ~Z 08 7 8 10 11 12 13 18 19 20 SEOUENTIAL OCCURRENCE REPORT REVISION LERIRO REPQRT ACTION FUTURE EVENT YEAR
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| ~79 21 22 EFFECT
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| ~
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| 23 SHUTDOWN
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| ~02 24 REPORT NO.
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| 0 26
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| ~W 27
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| ~03 ATTACHMENT 28 CODE 29 NPRDQ TYPE
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| ~L 30 PRIME COMP.
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| 31 NO.
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| ~0 32 COMPONENT TAKEN ACTION ON PLANT METHOD HOURS Q22 SUBMITTED FORM SUB. SUPPLIER MANUFACTURER Q18 ~Z Q18 ~Z P28 ~Z P21 0 0 0 0 ~N Q23 ~N Q24 ~z Q28 Z 9 9 9 Q28 33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS Q27 3 o REPEATED PRESSURE FLUCTUATIOI'1S IN THE PRESSURIZER RELIEF TANK CAUSED THE RUPTURE 4
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| =-
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| DISK TO,WEAKEN AND BLOW BELOW ITS DE P
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| - 81318 CAUSED DOORS TO OPEN SLIGHTLY. NO CORRECTIVE ACTION PLANNED SINCE DOORS. FUNCTIONED AS DESIGNED.
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| 7 8 9 80 8
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| FACILITY STATUS G Q28 ~00
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| 'Yo POWER OP>>
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| OTHER STATUS NA
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| ~ METHOD OF DISCOVERY
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| ~AQ31 DISCOVERY DESCRIPTION OPERATOR OBSERYATIUA 7' 9 10 12 i3 44 45 46 80 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT OF ACTIVITYQ3 LOCATION OF RELEASE
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| ~16 Z Q33 Z Q34 NA NA 7 8 9 10 44 45 80 PERSONNEL EXPOSURES 7
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| 1 8
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| ~00 9
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| NUMBER 0,
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| 11 Q31 TYPE
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| ~ZQ38 12 DESCRIPTION Q39
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| '13 NA I 77nE<aCr ~> ~ 80 PERSONNEL INJURIES 7 8 9 11 12 80 LOSS OF OR DAMAGE TO FACILITY TYPE DESCRIPTION Q43
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| ~io 8 Z Q42 NA 7 9 10 80 PUBLICITY NRC USE ONLY ESSUED DESCRIPTION 43 44
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| ~23 LNJP44 NA Ol 89 10 68 69 80' 465 5901 0 NAME OF PREPARER'AMES DICKSON PHDNE ( 61 6 ) L 43
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| la )I N,l fli 'I I lg t, I/}}
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