05000315/LER-1979-049-03, /03L-0:on 790924,during Review of Axial Power Distribution Monitoring Sys Readout,Discovered That Sys Failed to Perform Tech Spec Surveillance Requirement F(Z). Caused by Direction Relay Sticking on Detector Drive 4

/03L-0:on 790924,during Review of Axial Power Distribution Monitoring Sys Readout,Discovered That Sys Failed to Perform Tech Spec Surveillance Requirement F(Z). Caused by Direction Relay Sticking on Detector Drive 4

ML17326A293
Person / Time
Site:	Cook
Issue date:	10/24/1979
From:	Chadwell H INDIANA MICHIGAN POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17318A370	List: 05000315/LER-1979-049, Forwards LER 79-049/03L-0 05000315/LER-1979-049-03, /03L-0:on 790924,during Review of Axial Power Distribution Monitoring Sys Readout,Discovered That Sys Failed to Perform Tech Spec Surveillance Requirement F(Z). Caused by Direction Relay Sticking on Detector Drive 4
References
LER-79-049-03L, LER-79-49-3L, NUDOCS 7910300221
Download: ML17326A293 (4)

LER-1979-049, /03L-0:on 790924,during Review of Axial Power Distribution Monitoring Sys Readout,Discovered That Sys Failed to Perform Tech Spec Surveillance Requirement F(Z). Caused by Direction Relay Sticking on Detector Drive 4

Event date:
Report date:
3151979049R03 - NRC Website

text

NR+ORM'386 9

44 U. S. NUCLEAR REGULATORY COMMISSION ALLREQUIRED INFORMATION) 1 ENSEE EVENT REPORT Q

(PLEASE PRINT OR TYPE 6

0 0

0 0

0 0

0 0

0 0 Q34 LICENSE NUMBER 25 26 CONTROL BLOCK:

1 M

I DCC1Q20 LICENSEE CODE 14

'IS 1

1 I

1 Q4~Qs LICENSE TYPE30 57 CAT 58

~0 7

8 CON'T

~0 QB REPORT DATE 80 7

8

'0 2

soURcE ~LO 5

0 0

0 3

1 5

Q7 0

9 2

4 QB 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES Q10 F

PDM PRINT UT T

~03 TO PERFORM THE F

Z SURVEILLANCE RE UIREMENT OF T. S. 4. 2.6. 1 ON TWO OCCASIONS:

~0 4

SEPT.

23 AT 2154 AND SEPT.

24 AT 0554.

THE OPERATOR WAS UNAWARE THAT THE APDMS

~0 8

HAD FAILED TO FUNCTION ON SCHEDIJLE SINCE NO ALARM WAS ACTUATED THEREFORE NO

~0 8

ALTERN TIVE ACTI N

W TAKEN T NUAL SC N

WAS PERFORMED AT 0730 PT.

24 AND THE F

Z WAS DETERMINED TO BE WITHIN LIMITS.

~08 7

8 9

80 7

8 SYSTEM

CAUSE

CAUSE COMP.

VAIVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE

~10 Q11 E

Q12

~XQ>>

I N. 9 T'

0 04

~XQ18 Z

Qs 9

10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION LF RIRO EVENTYEAR REPORT NO.

CODE TYPE NO.

Q12 REPORT L779I U

LXLLPM U+

M09 UL LJ Uo 21 22 23 24 26 27 28 29 30 31 32 ACTION FUTURE EFFECT SHUTDOWN ATTACHMENT NPRDR PRIME COMP.

COMPONENT TAKEN ACTION ON PLANT METHOD HOURS Q22 SUBMITTED FORM SUB.

SUPPLIER MANUFACTURER

~HQ18 ~XQ19

~ZQ29

~ZQ21 0

0 0

0 N

Q22

~YQ24

~NP>>

N I

Z O

P 33 34 35 36 4

37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS Q27 o

A DIRECTION RELAY WAS FOUND TO BE STICKING ON ¹4 DETECTOR DRIVE WHICH PREVENTED WITHDRAWAL OF THE DETECTOR FOLLOWING COMPLETION OF THE PREVIOUS:

COOPERATION.

2 IN THIS CONDITION THE APDMS WAS INCAPABLE OF PERFORMING ITS FUNCTION AT THE 3

PROGRAMMED INTERVAL.

THE MANUAL SCAN WAS ACCOMPLISHED BY SWITCHING TO ¹1 AND ¹3 4

DETECTORS.

THE FAULTY RELAY WAS REMOVED CLEANED AND ADJUSTED, CONTINUED PG.2 7

8 9

FACILITY STATUS

%%dPOWER OTHER STATUS Q 5

E Q28 ~l0 0

Q29 NA 7

8 9

10 12 13 44 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITYQ

[-ii]~z Q33

~ZQ3 NA 7

8 9

10 44 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION Q39 [ii~] ~00 0 Q Z

Qss NA 7

8 9

11 12 13 PERSONNEL IN3URIES NUMBER DESCRIPTION Q41 8

~OO O

Q49 NA METHOD OF DISCOVERY LCJQ31 45 46 45 NA DISCOVERY DESCRIPTION Q32 DATA REVIEW LOCATIONOF RELEASE Q36 80 80 80 80 7

8 7

8m 7

4 8

NAME OF PREPARER H.

M.

CHADWELL 9

11 12 LOSS OF OR DAMAGETO FACII.ITYQ43 TYPE

DESCRIPTION

z Q42 NA 9

10 P U8 LIC ITY ISSUED DESCRIPTION~

MN04 NA 9

10 80 NRC USF ONI.Y 80 o

80' 68 69 PHDNE

{616) 465-5901 X-316 a

0 P,. '

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• 4

ATTACHMENT TO LER 0'79-049/03L-0 PAGE '2 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS:

AND RETURNED TO SERVICE.

A CHECK OF THE MALFUNCTION ALARM REVEALED THAT IT WAS NOT DESIGNED TO ACTIVATE UNDER THE EXISTING CONDITION.

ALL OPERATORS HAVE

, BEEN REINSTRUCTED TO MONITOR THE APDMS PRINTOUTS CLOSELY TO INSURE THAT ALL SURVEILLANCE REQUIREMENTS ARE MET SHOULD THE APDMS FAIL TO FUNCTION.

1 l