ML17331A700

LER 81-007/03L-0:on 810315 During Operation of 2CD Emergency Diesel in Preparation for Surveillance,Hot Starting Air Line Observed.Caused by Valve Damage & Exhaust Expansion Joint Inner Liner Failure.Intake & Exhaust Valves Replaced

ML17331A700
Person / Time
Site:	Cook
Issue date:	04/14/1981
From:	Wizner D INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17326A873	List: ML17326A872 ML17331A699 ML17331A700
References
LER-81-007-03L-01, LER-81-7-3L-1, NUDOCS 8104210363
Download: ML17331A700 (2)

Text

NRC FORIVL366 l7.77)I~~V.S.NUCI.EAR REGULATORY COMMISSION LlCENSEE EVENT REPORT CONTROL BLOCK: (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

I 6 N I 0 C C 2 QE 0 0 0 0 0 0 0 0 0 Q34 1 1 1 1 QE~QE 8 9 LICENSEE'ODE 14 15 LICENSE NUMBER 26 26 LICENSE TYPE 30 57 CAT 58 CON'T 0 I soURcE LJO 0 5 0 0 0 3 1 6 7 0 3 1 5 8 1 Q OB DOCKET NUMBER 68 69 EVENT DATE 74/5 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES Q10~02 DURING OPERATION OF 2CD EMERGENCY DIESEL IN PREPARATION FOR 18 MONTH SURVfILLANCE, A~03~04~OS~os HOT STARTING AIR LINE WAS OBSERVED.THE fNGINE WAS REMOVED FROM SERVICE AND DECLARED INOPfRABLE PER T.S.3.8.1.1 THE ACTION REQUIREMENTS WfRE MET.THE UNIT WAS BEING COOLED DOWN FOR A SCHEDULED REFUELING OUTAGE.THE 2AB DIESEL REMAINED OPERABLE.PUB-LIC HEALTH AND SAFETY WAS NOT AFFECTED BY THIS EVENT.A SIMILAR OCCURfNCE WAS REPORTED~07 AS RO 78-~OB 7 8 9~Os 03L-O.80 7 8 SYSTEM CAUSE CAUSE COMP.VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE~EE QLI L~JQ LJQI3 V A L V E X QE LBGE~Go 9 10 11 12 13 18 19 20 SEOUENTIAL OCCURRENCE REPORT REVISION LER/RO EVENT YEAR REPORT NO.CODE TYPE NO.QI7 REPORT~01~~00 7~m~03 21 22 23 24 26 27 28 29 30 31 32 ACTION FUTURE EFFECT SHUTDOWN ATTACHMENT NPRDQ PRIME COMP.*COMPONENT TAKEN ACTION ON PLANT METHOD HOURS Q22 SUBMITTED FORM SUB.SUPPLIER MANUFACTURER

~CQIB~X Q19~ZQ20~Z Q21 0 0 0 0~Y Q23~YQ24~A Q25 W 3 1 5 Q2B 33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTION Q27 T TART G AIR VALVE FOR 4 REAR BANK CYLINDER WORTHINGTON PART NO.56000001, STUCK OPEN EXPOSING THE STEM TO FLUCTUATING HIGH PRESSURE AND TEMPERATURE OUE TO COMBUSTION

.IN THE CYLINDER AND RESULTING IN FATIGUE FAILURE.ALL CYLINDER HEADS WERE REMOVED 3 AND THE CYLINDERS INSPECTED.

METAL PIECES WERE REMOVED FROM¹2 AND¹4 REAR BANK CYL-4 INDERS.¹2 REAR BANK PISTON CYLINDER HEAD AND SLEEVf WERE REPLACED.(CONTINUED) 80 N A 80 80 80 80 NRC USE ONLY o 80~o 0 PHONE 7 8 9 FACILITY~3P METHOD OF STATUS%POWER OTHER STATUS Q DISCOVERY DISCOVERY DESCRIPTION Q32~ls~OQ23~00 0 Qss N/A~AQSI OPERATOR OBSERVATION 7 8 9 10 12 13 44 45 46 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT OF ACTIVITY Q3S LOCATION OF RELEASE Q EK LZJ Q3 IZlQ-7 8 9 10 11 44 45 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION Q39~l7~00 0 Q37~ZQSs N A 7 8 9 11 12 13 P ER5 0NNE L IN JURIES NUMBER DESCRIPTIONQ41 EK~~OQ4o N A 7 8 9 11 12 LOSS OF OR DAMAGE TO FACILITY Q43 TYPE DESCRIPTION 9~ZQ42 N A 8 9 10 PUBLICITY IssUED UEEERIPTIUN~o 8 106PNX(/3'

~NQ44 N/A 7 8 9 10 68 69 NAME OF PREPARER DAVID G.W Z SUPPLEMENT TO LER¹81-007/03L-0 SUPPLEMENT TO CAUSE DESCRIPTION:

THE INTAKE AND EXHAUST VALVES IN¹4 REAR BANK CYLINDER HEAD WERE REPLACED.ALL STARTING AIR VALVES WERE INSPECTED.

TWO ADDITIONAL STARTING AIR VALVES WERE FOUND STUCK OPEN.THf¹4 REAR BANK,¹2 FRONT BANK AND¹5 REAR BANK STARTING AIR VALVES WERE REPLACED.THE REAR BANK STARTING AIR DISTRIBUTOR WAS REPLACED.INSPECTION OF STARTING AIR VALVES WILL BE A PART OF THE 18 MONTH SURVEILLANCE IN BOTH UNITS.INSPECTION OF THE TURBOCHARGER REVEALfD THAT IT WAS DAMAGED BY SMALL PARTS OF THE FAILfD STARTING AIR VALVf AND FAILURE OF THE EXHAUST EXPANSION JOINT INNfR LINERS.THE TURBOCHARGER ROTOR WAS REPLACED.ALL OF THE LINERS HAVE BEEN RfMOVED FROM 2CD DIESEL.LINERS ON THE THREE REMAINING DIESEL ENGINES WILL BE REMOVfD DURING'UBSEQUENT 18 MONTH SURVEILLANCE INSPECTIONS.