05000316/LER-1978-094-03, /03L-0 on 781202:halon Sys for Cable Spreading Area Was Discharged & Therefore Inoperable.Caused by Operator Error

/03L-0 on 781202:halon Sys for Cable Spreading Area Was Discharged & Therefore Inoperable.Caused by Operator Error

ML17317A827
Person / Time
Site:	Cook
Issue date:	12/20/1978
From:	James Smith INDIANA MICHIGAN POWER CO.
To:
Shared Package
ML17317A823	List: 05000316/LER-1978-091, Forwards LER 78-091/03L-0; 78-092/03L-0/; 78-093/03L-0; 78-094/03L-0; 78-095/03L-0; 78-096/03L-0; 78-097/03L-0; & 78-098/03L-0 05000316/LER-1978-091-03, /03L-0 on 781125:source Range Neutron Flux Channel N-31 Inoperable.Caused by Unclean Connectors on High Voltage Cable & Signal Cable at Prcamp 05000316/LER-1978-092-03, /03L-0 on 781125:reactor Coolant Average Temp on 2 of 4 Loops Below Tech Specs of 541F,resulting in P-12 Permissive Being Actuated.Caused by Turbine Test W/Minimum Steam Dump,Increase Steam Flow Caused Temp Drop 05000316/LER-1978-093-03, /03L-0 on 781125:rod Position Indication(Rpi)For Control Rod H-8 Exceeded 12 Step Limit.Caused by H-8 Drift 05000316/LER-1978-094-03, /03L-0 on 781202:halon Sys for Cable Spreading Area Was Discharged & Therefore Inoperable.Caused by Operator Error 05000316/LER-1978-095-03, /03L-0 on 781206:while Decreasing Turbine Load, Reactor Coolant Average Temp Exceeded 576.2 F.Caused by Faulty Drain Valves on 5-A Heater,Creating Unstable Feedwater Control & Turbine Load 05000316/LER-1978-096-03, /03L-0 on 781209:during Rapid Load Reduction from 100% to 88%,axial Flux Difference Went Outside Target Band. Air Leak on a Condenser Vacuum Breaker Caused Increase in Back Pressure on Main Condenser 05000316/LER-1978-097-03, /03L-0 on 781209:during Rapid Pwr Reduction from 100% to 88%,pwr Pressurizer Pressure Reduced Below Tech Spec Limit of 2220psia.Caused by Rapid Pwr Reduction Because of Decreasing Vacuum on Main Turbine/Generator 05000316/LER-1978-098-03, /03L-0 on 781010:axial Flux Difference(Afd) Monitoring Alarm Point Was Discovered to Be Set at 103% Vice 84%.Caused by Afd Alarm Trip Point Being Raised for Testing Purposes & Not Returned to Correct Point
References
LER-78-094-03L, LER-78-94-3L, NUDOCS 7812270268
Download: ML17317A827 (2)

LER-1978-094, /03L-0 on 781202:halon Sys for Cable Spreading Area Was Discharged & Therefore Inoperable.Caused by Operator Error

Event date:
Report date:
3161978094R03 - NRC Website

text

NRC FORM 366

{7.77}

LICENSEE EVENT REPORT LL S. NUCLEAR REGULATORY COMMISSION 4

CONTROL BLOCK:

I Ql (PLEASE PRINT OR TYPE ALLREQUIRED INFORMATION) 25 26 I.ICENSE TYPF 30 57 CAT 58 Q

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LICENSEE'CODE CON'T 14 15 LICENSE NUMBER QB>> 20 QB 80 74 75 REPORT DATE 7

8 A

soURGE LLJO 0 5

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1 6 0 60 61 DOCKET NUMBER 68 69 EVENT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES Q10 UNIT OPERATING IN MODE 1.

OPERATOR ERROR RESULTED I

~O3 4

SPREADING AREA BEING DISCHARGED AND THEREFORE INOPERABLE IN VIOLATION OF SPEC 3.7.9.4.

ACTION ITEM 3.7.9.4a WAS COMPLIED.WITH HALON SYS.'RESTOR

~OS

~OB OPERABLE STATUS ON DECEMBER 4, 19784 NO" PROBABLE CONSE UENCES.

THIS WAS FIRST EVENT OF THIS TYPE.

0 7

~OB 80 7

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8 SYSTEM

CAUSE

CAUSE COMP VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE

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10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION LERIRP EVENTYEAR REPORT NO.

CODE TYPE NO.

Q17 REPoRT MB U

~09 4

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Uo 21 22 23 24 26 27 28 29 30 31 32 ACTION FUTURE EFFECT

SHUTDOWN, ATTACHMENT NPRDR PRIME COMP.

COMPONENT TAKEN ACTION ON PLANT METHOD HOURS Q22 SUBMITTED FORM SUB.

SUPPLIER MANUFACTURER UNQ75 UZQER

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0 UNQ23 UNQ24 UZQ25 Z

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9 Q25 33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS Q27 o

HALON SYS DISCHARGED WHEN OPERATOR PUSHED AC HAVE PUSHED CO RESET BUTTON.

OPERATO SURE HE PUSHED CORRECT PUSH BUTTON:-7SINCE PUSH BUTTONS ARE CLOSE TO EACH OTHER.

3 PROTECTIVE COVERS TO BE INSTALLED OVER PUSH BUTTONS TO

CAUSE

OPERATOR TO TAKE TIME TO BE SURE HE IS CORRECT.

45 7

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FACILITY

~3P METHOD OF STATUS 9I'7 POWER OTHER STATUS ~

'ISCOVERY DISCOVERY DESCRIPTION 32

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~AQ31 OPERATOR OBSERVATION 7

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10 12 13 44 45 46 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITYQ LOCATIONOF RELEASE Q [i>~]~ Q33 IZJQ34 7

8 9

10 44 PERSONNEL EXPOSURES NUMBER TYPE

DESCRIPTION

7 ~00 0

Q37 UZQ35 NA 7

8 9

11 12 13 PERSONNEL INJURIES NUMBER DESCRIPTION~41 5 ~00 0

Q45 NA 80 80 80 80 9

11 12 LOSS OF OR DAMAGETO FACILITY 43 TYPE

DESCRIPTION

Z Q2 NA 9

10 PUBLICITY ISSUED DESCRIPTION ~

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10 7

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8 NAME (~JIZ PREPARER L.

K SMITH 80 80 NRC LISE ONLY 68 69 80 o

(616) 465 5901 K.

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