05000316/LER-1979-035-01, /01T-0:on 791017,emergency Diesel Generator AB & Motor Driven Auxiliary Feedwater Pump Removed from Svc for Maint.Caused by Failure of Operators to Identify safety- Related Equipment Associated W/Emergency Diesel Generator

/01T-0:on 791017,emergency Diesel Generator AB & Motor Driven Auxiliary Feedwater Pump Removed from Svc for Maint.Caused by Failure of Operators to Identify safety- Related Equipment Associated W/Emergency Diesel Generator

ML17326A316
Person / Time
Site:	Cook
Issue date:	10/31/1979
From:	Lease R INDIANA MICHIGAN POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17326A315	List: 05000316/LER-1979-035, Forwards LER 79-035/01T-0 05000316/LER-1979-035-01, /01T-0:on 791017,emergency Diesel Generator AB & Motor Driven Auxiliary Feedwater Pump Removed from Svc for Maint.Caused by Failure of Operators to Identify safety- Related Equipment Associated W/Emergency Diesel Generator
References
LER-79-035-01T, LER-79-35-1T, NUDOCS 7911060476
Download: ML17326A316 (4)

LER-1979-035, /01T-0:on 791017,emergency Diesel Generator AB & Motor Driven Auxiliary Feedwater Pump Removed from Svc for Maint.Caused by Failure of Operators to Identify safety- Related Equipment Associated W/Emergency Diesel Generator

Event date:
Report date:
3161979035R01 - NRC Website

text

U. S. NUCLEAR REGULATORYCOMMISSION lCENSEE EVENT REPORT Qi tPLEASE PRINT OR TYPE ALLREQUIRED INFORMATION) 6 0

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1 1 105~05 LICENSE NUMBER 25 26 LICENSE TYPE 30 57 CAT 58 gRC FORM 366 Il-77) 7 S <<42

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LICENSEE CODE 14 15 [OOi]

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60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES Q10 H

" B" EMERGENCY DIESEL GENERATOR WAS EM VED FR M S V

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1 7

9 QB REPORT DATE 80 7

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~O3 F RM INT AT AUXILIARY POWER RE UIRED FOR THE TURBINE DRIVEN AUXILIARY FEEDWATER PUMP FOR 0711 HOURS ON OCTOBER 16 1979.

THIS DIESEL GENERATOR SUPPLIES THE EMERGENCY

~OS AUTOMATIC AND REMOTE OPERATION.

DURING THIS DIESEL OUTAGE THE ¹1 MOTOR DRIVEN

~os AUXILIARY FEEDWATER PUMP WAS REMOVED FROM SERVICE FOR A 2.75 HOUR PERIOD CONTRARY

~OB 7

8 9

TO TECH.

SPEC. 3.7.1.2.

DURING THIS 2.75 HOUR PERIOD 2 OF THE 3 SOURCES WERE CAPABLE OF SUPPLYING AUXILIARY FEEDWATER.

THE TURBINE DRIVEN CONT.

PAGE 2

80

~OB 7

8 SYSTEM

CAUSE

CAUSE COMP.

VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE

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Q12

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10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION LERiRP EVENT YEAR REPORT NO.

CODE TYPE NO.

Q17 REPQRT

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~V 21 22 23 24 26 27 28 29 30 31 32 ACTION FUTURE EFFECT SHUTDOWN ATTACHMENT NPRD.4 PRIME COMP.

COMPONENT TAKEN ACTION ON PLANT METHOD HOURS +22 SUBMITTED FORM SUB.

SUPPLIER MANUFACTURER

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9 Q28 33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS Q27 o

WHEN THE MOTOR DRIVEN PUMP WAS REMOVED FROM SERVICE IT WAS WITH FULL KNOWLEDGE THAT IT WAS ONE OF THE PUMPS RE VIREO BUT THE EMERGENCY POWER DEFICIENCY WAS NOT RECOGNIZED.

>".',I MODIFICATIONS ARE BEING MADE WHICH WILL ELIMINATE THE NEED FOR AC POWER FOR OPERATION OF THE STEAM DRIVEN AUXILIARY FEEDWATER PUMP.

ALSO, WE ARE 4

IMPROVING THE SAFETY RELATED EQUIPMENT CHART TO MAKE IT EASIER (CONT.

PAGE 2)

ACTIVITY CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITYQ 6

Z Q33

~ZQ34 NA 7

8 9

10 44 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION Q39 7 ~00 0

Q37 ~Z Q38 7

8 9

11 12 13 PERSONNEL INJURIES [ii~j ~00 0

Qo NA 7

8 9

11 12 LOSS OF OR DAMAGETO FACILITY 43 TYPE

DESCRIPTION

8

~2Q42 NA 7

8 9

10 PUBLICITY ISSUED

DESCRIPTION

KH WNe NA 8

9 10 45 NA 8

9 FACILITY

~3P METHOD OF STATUS 99 POWER OTHER STATUS ~

DISCOVERY 5

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NA LBJQ31 8

9 10 12 13 44 45 46 DISCOVERY DESCRIPTION OPERATOR OBSERVATMN LOCATION OF RELEASE Q NA gg 11 1 Qyp@

NRC USF. ONLY 68 69 80 80 80 80 80 80 53 ESO 80 ~ Es NAME OF PREPARER RICHARD S.

LEASE (616) 465-5901 X-313

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'TTACHMENT TO LER 079-035/01T-0 PAGE 2

EVENT DESCRIPTION

AND PROBABLE CONSE UENCES:

(CONTINUED)

PUMP REMAINED CAPABLE OF BEING POWERED FROM AN OPERABLE STEAM SUPPLY SYSTEM.

THE PUMP DISCHARGE VALVES WERE IN, THEIR NORMAL STANDBY POSITION OF OPEN.

THE ONLY POWER REQUIRED BY THE TURBINE DRIVEN PUMP'O SUPPLY WATER TO THE STEAM GENERATORS WOULD BE THAT REQUIRED.TO OPEN THE TURBINE TRIP AND THROTTLE VALVE.

BOTH PHYSICALLY INDEPENDENT OFFSITE POWER SOURCES REQUIRED BY TECH.

SPEC.

3.8.l.l.a WERE OPERABLE.

IN THE EVENT A BLACKOUT OCCURS, THE EMERGENCY OPER-ATING PROCEDURES INSTRUCT THE OPERATOR TO ENERGIZE THE CLASS EE BUSES FROM THE SECOND OFFSITE POWER SOURCE IF THEY AREN'T ENERGIZED fROM THE EMERGENCY I

DIESEL GENERATORS.

TO ENERGIZE THE CLASSIE BUS.FROM THE SECOND OFFSITE POWER SOURCE REQUIRES A MANUAL OPERATION AND WOULD TAKE AN ESTIMATED THREE MINUTES.

SHOULD NO POWER HAVE BEEN AVAILABLE, THE OPERATORS WOULD HAVE STARTED THE TURBINE BY MANUALLY OPENING THE TURBINE TRIP AND THROTTLE VALVE AND THUS CONTROL THE FLOW OF AUXILIARY FEEDWATER TO THE STEAM GENERATORS.

OPERATORS ON EACH SHIFT HAVE BEEN TRAINED BY ACTUAL PERFORMANCE OF THE OPERATION HOW TO MANUALLY START AND CONTROL THE TURBINE DRIVEN AUXILIARY'FEEDWATERPUMP.

CAUSE DESCRIPTION AND CORRECTIVE ACTIONS'CONTINUED)

FOR THE OPERATORS TO IDENTIFY THE SAFETY RELATED EQUIPMENT ASSOCIATED WITH THE EMERGENCY DIESEL GENERATOR.

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