05000315/LER-1980-015-03, /03L-0:on 800703,in Mode 6,train B Centrifugal Charging Pump Failed While Running Due to Broken Pump Shaft. Cause Unknown.Pump Rebuilt Using New Design Shaft

/03L-0:on 800703,in Mode 6,train B Centrifugal Charging Pump Failed While Running Due to Broken Pump Shaft. Cause Unknown.Pump Rebuilt Using New Design Shaft

ML17331A411
Person / Time
Site:	Cook
Issue date:	07/29/1980
From:	Lease R INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17326A704	List: 05000315/LER-1980-015, Forwards LER 80-015/03L-0 05000315/LER-1980-015-03, /03L-0:on 800703,in Mode 6,train B Centrifugal Charging Pump Failed While Running Due to Broken Pump Shaft. Cause Unknown.Pump Rebuilt Using New Design Shaft
References
LER-80-015-03L-01, LER-80-15-3L-1, NUDOCS 8008040158
Download: ML17331A411 (4)

LER-1980-015, /03L-0:on 800703,in Mode 6,train B Centrifugal Charging Pump Failed While Running Due to Broken Pump Shaft. Cause Unknown.Pump Rebuilt Using New Design Shaft

Event date:
Report date:
3151980015R03 - NRC Website

text

U. S. NUCLEAR REGULATORYCOMMISSION LICENSEE EVENT REPORT Qi

{PLEASE PRINT OR TYPE ALLREQUIRED INFORMATION) 6 O

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1 Q4~Qs LICENSE NUMBER 25 26 LICENSE TYPE 30 57 CAT 68 NRC FORM 366

$.77)

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LICENSEE CODE 14 15 7

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8 0Q 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES Q10 WHILE IN MODE 6 THE TRAIN 'B'ENTRIFUGAL CHARGING PUMP FAI,'LED WHILE RUNNING DUE TO A BROKEN PUMP 'SHAFT.

THE TRAIN 'A'HARGING PUMP WAS INOPERABLE PER T.S. 3.1.2.3 4

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~O7 SINCE THE TRAIN 'A'IESEL WAS OUT OF SERVICE.

THE TRAIN 'A'HARGING PUMP WAS PLACED IN SERVICE.

NO CORE ALTERATIONS WERE PERFORMED WHILE THE TRAIN 'A'IESEL WAS OUT OF SERVICE.

THERE HAVE BEEN TWO'REVIOUS OCCURRENCES OF SHAFT FAILURE.

THIS EVENT HAD NO EFFECT ON PUBLIC HEALTH AND SAFETY.

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~OB REVISION UO COMPONENT MANUFACTURER 44 THE 'A'7 O26 TRAIN DIESEL WAS OUT OF SERVICE FOR 18-MONTH SURVEILLANCE IlHEN THE 'B CENTRIFUGAL CHARGING PUMP EXPERIENCED SHAFT FAILURE, LEAVING THE 'Ai TRAIN CENTRIFU-GAL CHARGING PUMP AS THE OPERABLE PUMP EXCEPT FOR EMERGENCY DIESEL POWER.

THE 'A'RAIN DIESEL SURVEILLANCE WAS COMPLETED AND THE DIESEL DECLARED OPERABLE 80 METHOD OF DISCOVERY

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Lease CO MQ ~Q ACTIVITY CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITY s

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ATTACHMENT TO LER ¹80-015 03L-0

.SUPPLEMENT TO CAUSE DESCRIPTION PRIOR TO ANY FURTHER CORE ALTERATIONS.

THE 'B'RAIN CHARGING PUMP HAS RE-BUILT USING THE "NEW" DESIGN SHAFT.

THE CAUSE OF SHAFT FAILURE IS UNKNOWN.

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