05000315/LER-1978-069-03, /03L-0 on 781010:axial Flux Difference Monitoring Alarm Point Discovered Set Above Tech Spec Max.Caused by Raising of Alarm Trip Point During Preoperational Test Failure to Return to Required Value at End

/03L-0 on 781010:axial Flux Difference Monitoring Alarm Point Discovered Set Above Tech Spec Max.Caused by Raising of Alarm Trip Point During Preoperational Test Failure to Return to Required Value at End

ML17317A959
Person / Time
Site:	Cook
Issue date:	02/27/1979
From:	Beilman T INDIANA MICHIGAN POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17317A958	List: 05000315/LER-1978-069-03, /03L-0 on 781010:axial Flux Difference Monitoring Alarm Point Discovered Set Above Tech Spec Max.Caused by Raising of Alarm Trip Point During Preoperational Test Failure to Return to Required Value at End 05000315/LER-1979-003-03, /03L-0 on 790120:during Review of Completed Surveillance Tests,Discovered That Test on Solid State Protection Sys Train a Exceed 1-h Limit Imposed by Tech Specs.Caused by Technician Overlooking 1-h Limit ML17317A957
References
LER-78-069-03L, LER-78-69-3L, NUDOCS 7903050298
Download: ML17317A959 (4)

LER-1978-069, /03L-0 on 781010:axial Flux Difference Monitoring Alarm Point Discovered Set Above Tech Spec Max.Caused by Raising of Alarm Trip Point During Preoperational Test Failure to Return to Required Value at End

Event date:
Report date:
3151978069R03 - NRC Website

text

NRC FORM 366 l7 77,)

CONTROL BLOCK:

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LICENSEE CODE U. S. NUCLEAR REGULATORY COMMISSION LICENSEE EVENT REPORT (PLEASE PRINT OR TYPE ALLREQUIRED INFORMATION) 6 Q200000000000Q34 I

I I IQE~g) 14 15 LICENSE NUMBER 25 26 LICENSE TYPE 30 57 CAT 58 CON'T

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8 Q SOURCE 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES ~10 THE AXIAL FLUX DIFFERENCE (AFD) MONITORiNG )LA~ POINT AS DI SCOYERED TO BE,.SET AT I03 PER CENT VICE 75 PER CENT AS SPECIFIED BY T..S 3,2:l.

ADDITIONALLY, THE ACTION SPECIFIED UNDER T.S. 4.2.l.l.a.2 WAS NOT PERFORMED AS REQUIRED UPON RE-TURNING THE AFD ALARM TO OPERABLE STATUS.

TH )'S EVENT WAS NOT OR I G INALLY DERED TO BE A REPORTABLE OCCURRENCE ALTHOUGH THE NECESS ITY'F Q REPORT WAS ESTABLISHED DURING A RECENT REVI.EW OF THE

)NTERNAL <INVESTIGAT('ON REPORT BY THE RESIDENT NRC Q9 INSPECTOR.

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CAUSE

CAUSE COMP.

VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE QI'I D

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10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION LFR]RP EVENT YEAR REPORT NO.

CODE TYPE NO.

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8 Q 33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS 27 o

THE AFD ALARM TRIP POINT WAS RAISED TO.THE NON CONSERVATIVE VALUE FOR TESTING PURPOSES DURING A PREOPERATIONAL TEST. THE TEST)

HOWEVER, DID NOT CONTAIN A ETA I LED PROCEDURE TO ADJUST AND RESTORE THE ALARM TRIP 'POINT TO THE REQUIRED 3

VALUE UPON COMPLETION.

THE ALARM TRIP POINT WAS IMMEDIATELY RESTORED TO 4

NORMAL UPON DISCOVERY.

80 80 LOCATIONOF RELEASE Q ACTIVITY CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITY Z

Q33

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10 44 PERSONNEL EXPOSURES NUMBER TYPE

DESCRIPTION

1 ~00 0

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11 12 13 PERSONNEL INJURIES NUMBER DESCRIPTIONQ41 s

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11 12 LOSS OF OR DAMAGE,TOFACILITYQ43 TYPE

DESCRIPTION

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10 I UBLICITY ISSUED DESCRIPTIONQ o

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10 NA 80 45 7P'DW~-o~ ~~

80 80 80 NRC USE ONLY 80 o 0

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PHONE 6I6 465 590I NAME oF PREPARER T.

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% POWER OTHER STATUS ~

DISCOVERY DISCOVERY DESCRIPTION Q32

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SUPPLEMENT TO LER 878-069/03L-0 SUPPLEMENT TO EVENT DESCRIPTION THE AXIAL POWER DISTRIBUTION MONITORING SYSTEM WAS OPERABLE DURING THE TIME PERIOD, IN QUESTION WHICH ASSURED THAT THE UNIT POWER DISTRIBUTION WAS CON-SISTENT WITH ASSUMPTIONS IN THE LOCA ANALYSIS.

SUPPLEMENT TO CAUSE DESCRIPTION AS THE PREOPERATIONAL TEST WILL NEVER AGAIN BE PERFORMED, THE AFFECTED TEST WAS NOT BACKFITTED TO ADD IN A DETAILED PROCEDURE FOR THE ADJUSTMENT AND RESTORATION OF THE SUBJECT AL'ARMS.

THE RESPONSIBLE ENGINEERING SECTION HEAD HAS REVIEWED THIS EVENT WITH ALL SECTION PERSONNEL.

ADDITIONALLY, A LETTER HAS BEEN PREVIOUSLY SENT TO THE SECTION HEAD REQUESTING TRAINI,NG OF SPECIFIC POINTS OF THIS EVENT, INCLUD-ING THE NEED FOR PROMPT OPERATOR NOTIFICATION, WHO, IF PROMPTLY NOTIFIED, f

COULD POSSIBLY HAVE PERFORMED T.S. 4.2.l.l.a.2 WITHIN THE SPECIFIED TIME

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