ML17331A411

LER 80-015/03L-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

ML17331A411
Person / Time
Site:	Cook
Issue date:	07/29/1980
From:	LEASE R S INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17326A704	List: ML17326A703 ML17331A411
References
LER-80-015-03L-01, LER-80-15-3L-1, NUDOCS 8008040158
Download: ML17331A411 (4)

Text

U.S.NUCLEAR REGULATORY COMMISSION LICENSEE EVENT REPORT Qi{PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 6 O OQs~>>1 Q4~Qs LICENSE NUMBER 25 26 LICENSE TYPE 30 57 CAT 68 NRC FORM 366$.77)CONTROL BI OCK:[OO~]7 8 CON'T~01 rnI D C 9 LICENSEE CODE 14 15 7 8~LOB 0 0 0 0 3 1 5Q7 0 0 3 B OQso 7 2 9 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~OB~OB~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.~OS 80 7 8 SYSTEM CAUSE CAUSE COMP VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE'UBCODE~pg Q>>5 Q14~OQs Q14~B Q16~Z Q16 7 8 9 10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT LFRiRP EVENT YEAR REPORT NO.CODE TYPE Q sssos1~QQ+~01 5+H~03~L'1 22 23 24 26 27 28 29 30 31 ACTION FUTURE EFFECT SHUTDOWN ATI'ACHMENT NPRDP PRIME COMP.TAKEN ACTION ON PLANT METHOD HOURS Q22 SUBMITTED FORM SUB.SUPPLIER~AQis~ZO)B~ZO2O L~JO21 O O O~Y Q23~YQ24~NQ26 33 34 35 36 37 40 41 42 43 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS 027 MODE 6 REQUIRES ONE DIESEL AND ONE CHARGING PUMP IN THE SAME SAFETY TRAIN.~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~AQ31 45 46 45 NAME OF PREPARER R.S.Lease CO MQ~Q ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT OF ACTIVITY s~Z Qss Z Q44 N/A 7 8 9 10 44 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION QSB 1~00 0 Q>>Z Qss N A 7 8 9 11 12 13 PERSONNEL INJURIES NUMBER DESCRIPTIONO41 s~OO O Q44 N A 7 8 9 11 12 I.OSS OF OR DAMAGE TO FACILITY Q43 TYPE DESCRIPTION z O4.N A 7 8 9 10 PUBLICITY KDO L~JO N/A 7 8 9 10 DISCOVERY DESCRIPTION Q32 N A LOCATION OF RELEASE N A 80 80 80 800KO"fOl5$, 80 80 NRC USE ONLY 44 68 69 80~4s PHDNE.616-465 5901 EXT 3L 0'4 ATTACHMENT TO LER¹80-015 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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