ML17317A959

LER 78-069/03L-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

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: ML17317A957 ML17317A959 ML17317A960
References
LER-78-069-03L, LER-78-69-3L, NUDOCS 7903050298
Download: ML17317A959 (4)

Text

NRC FORM 366 U. S. NUCLEAR REGULATORY COMMISSION l7 77,)

LICENSEE EVENT REPORT CONTROL BLOCK: (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

/071 M I D C C I

14 Q200000000000Q34 15 6

LICENSE NUMBER 25 26 I I LICENSE TYPE I

IQE~g) 30 57 CAT 58 7 8 9 LICENSEE CODE CON'T

~01 REPDRT I L 1~ 0 5 o 0 0 3 I 5 Q I 0 I 0 7 8 Q Q9 SOURCE 74 75 REPORT DATE 80 7 8 60 61 DOCKET NUMBER 68 69 EVENT DATE 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

~03 4

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 INA LLY DERED TO BE A REPORTABLE OCCURRENCE ALTHOUGH THE NECESS I TY'F Q REPORT WAS ESTABLISHED

~Os DURING A RECENT REVI.EW OF THE )NTERNAL <INVESTIGAT('ON REPORT BY THE RESIDENT NRC

~07 INSPECTOR.

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

~09 QI'I D Q12 ~ZQ13 x x x x x x Q14 ~ZQI5 ~Z Q\5 12 13 18 19 20

~~

7 8 9 10 11 SEQUENTIAL OCCURRENCE REPORT REVISION QI LF R]RP REPoRT ACTION FUTURE EVENT YEAR

~TS 22 EFFECT

+

23 SHUTDOWN 24 REPORT NO.

26 Q~

27 ATTACHMENT

~03 28 CODE 29 NPRD~

TYPE

+L 30 PRIME COMP.

31

+0'1 32 NO.

COMPONENT UFQ 5 K~IN y t ~ 8 L~ISL~IQ 33 34 L~JQ 35 36 37 40 L~IQ L~JQ 41 42 43 44 47 Q

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 7

~ls 8 9 FACILITY STATUS

~EQ25 ~IO

% POWER 0

OTHER STATUS NA

~

~30 METHOD OF DISCOVERY

~DQRI DISCOVERY DESCRIPTION Q32 RESIDENT NRC INSPECTOR Qs 7 8 9 10 12 13 44 45 46 80 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITY NA LOCATION OF RELEASE Q Z Q33 ~ZQ34 NA 7 8 9 10 44 45 80 PERSONNEL EXPOSURES 1 ~00 NUMBER 0 QRT TYPE Z Qss DESCRIPTION NA 7P'DW~-o~ ~~

8 12 13 80 7 9 11 PERSONNEL INJURIES NUMBER DESCRIPTIONQ41 s ~OO 0 Q45 NA 80 7 8 9 11 12 LOSS OF OR DAMAGE,TO FACILITY TYPE DESCRIPTION Q43 9 Z Q42 NA 8 9 10 80 7

I UBLICITY NRC USE ONLY ISSUED DESCRIPTION Q o ~NQ44 NA 7 8 9 10 68 69. 80 o 0

T. P, Be i Iman PHONE 6I6 465 590I NAME oF PREPARER

~ I II 0 I

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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