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)

CONTROL BLOCK:

I I LlCENSEE EVENT REPORT 6

S. NUCI.EAR REGULATORY COMMISSION (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

N I 0 C C 2 QE 15 0 0 0 0 0 LICENSE NUMBER 0 0 0 0 26 Q34 26 1 1 1 LICENSE TYPE 1

30 QE~QE 57 CAT 58 8 9 LICENSEE'ODE 14 CON'T 0 I soURcE LJO 0 5 0 0 0 DOCKET NUMBER 3 1 6 68 7

69 0 3 1 EVENT DATE 5 8 1 74 Q /5 REPORT DATE 80 OB EVENT DESCRIPTION AND PROBABLE CONSEQUENCES Q10

~02 DURING OPERATION OF 2CD EMERGENCY DIESEL IN PREPARATION FOR 18 MONTH SURVfILLANCE, A

~03 HOT STARTING AIR LINE WAS OBSERVED. THE fNGINE WAS REMOVED FROM SERVICE AND DECLARED T.S. 3.8.1.1 THE ACTION REQUIREMENTS WfRE MET. THE UNIT WAS BEING

~04 INOPfRABLE PER THE 2AB DIESEL REMAINED OPERABLE. PUB-

~OS COOLED DOWN FOR A SCHEDULED REFUELING OUTAGE.

HEALTH AND SAFETY WAS NOT AFFECTED BY THIS EVENT. A SIMILAR OCCURfNCE WAS REPORTED

~os LIC

~07 AS RO 78- 03L-O.

~OB 80 7 8 9 SYSTEM CAUSE CAUSE COMP. VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE

~Os ~EE QLI L~JQ LJQI3 13 V A L V E X 18 QE LBGE 19

~Go 20 7 8 9 10 11 12 SEOUENTIAL OCCURRENCE REPORT REVISION QI7 LER/RO REPORT ACTION FUTURE EVENT YEAR

~01 21 22 EFFECT

~23 SHUTDOWN 24 REPORT NO.

~00 7 26

~m 27

~03 28 ATTACHMENT CODE 29 NPRDQ TYPE 30 PRIME COMP.

31

• NO.

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

~Z 0 0 0 0 ~Y ~YQ24 ~A W 3 1 5

~CQIB ~X Q19 ~ZQ20 Q21 37 41 Q23 Q25 44 47 Q2B 33 34 35 36 40 42 43 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 FROM ¹2 AND ¹4 REAR BANK CYL-4 INDERS. ¹2 REAR BANK PISTON CYLINDER HEAD AND SLEEVf WERE REPLACED. (CONTINUED) 7 8 9 FACILITY STATUS  % POWER OTHER STATUS Q

~3P METHOD OF DISCOVERY DISCOVERY DESCRIPTION Q32

~ls ~OQ23 ~00 10 0

12 Qss N/A 44

~AQSI 45 46 OPERATOR OBSERVATION 80 7 8 9 13 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITYQ3S LOCATION OF RELEASE Q EK LZJ Q3 7 8 9 IZlQ-10 11 44 45 N A 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION Q39

~l7 ~00 0 Q37 ~ZQSs 12 13 N A 80 7 8 9 11 P ER5 0NNE L INJURIES NUMBER DESCRIPTIONQ41 EK ~~OQ4o 7 8 9 11 12 N A 80 LOSS OF OR DAMAGE TO FACILITY TYPE DESCRIPTION Q43 9 ~ZQ42 N A 8 9 10 80 PUBLICITY NRC USE ONLY IssUED

~NQ44 UEEERIPTIUN~o N/A 8 106PNX(/3' o 7 8 9 10 68 69 80 o

~

0 NAME OF PREPARER DAVID G. W Z PHONE

SUPPLEMENT TO LER ¹81-007/03L-0 SUPPLEMENT TO CAUSE DESCRIPTION:

THE INTAKE AND EXHAUST VALVES IN ¹4 REAR BANK CYLINDER HEAD WERE REPLACED. ALL STARTING AIR VALVES WERE INSPECTED. TWO ADDITIONAL STARTING AIR VALVES WERE FOUND STUCK OPEN. THf ¹4 REAR BANK, ¹2 FRONT BANK AND ¹5 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.