ML17326A293

LER 79-049/03L-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

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: ML17318A369 ML17326A293
References
LER-79-049-03L, LER-79-49-3L, NUDOCS 7910300221
Download: ML17326A293 (4)

Text

NR+ORM'386 1 U. S. NUCLEAR REGULATORY COMMISSION 9 ENSEE EVENT REPORT 44 CONTROL BLOCK:

1 6 Q (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

~0 7 8 M I DCC1Q20 LICENSEE CODE 14 'IS 0 0 0 0 0 LICENSE NUMBER 0 0 0 0 0 25 Q34 26 1 1 LICENSE I

TYPE30 1 Q4~Qs 57 CAT 58 CON'T

~0 7 8 soURcE ~LO 60 61 5 0 0 0 DOCKET NUMBER 3 1 5 68 Q7 69 0 9 2 EVENT DATE 4

74 QB 75 REPORT DATE 80 QB EVENT DESCRIPTION AND PROBABLE CONSEQUENCES Q10

'0 2 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 SYSTEM CAUSE CAUSE COMP. VAI VE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE 7 8

~10 9 10 Q11 11 E Q12 ~XQ>>

12 13 I N. 9 T' 0 04 18

~XQ18 19 20 Z Qs SEQUENTIAL OCCURRENCE REPORT REVISION EVENT YEAR U

LF RIRO REPORT NO. CODE TYPE NO.

Q12 REPORT L779I 21 22 23 LXLLPM 24 26 U+

27 M09 28 29 UL 30 LJ 31 Uo 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 I NTERVAL. THE MANUAL SCAN WAS ACCOMPL I SHED BY SW I TCHI NG TO ¹1 AND ¹3 4 DETECTORS. THE FAULTY RELAY WAS REMOVED CLEANED AND ADJUSTED, CONTINUED PG.2 7 8 9 80 FACILITY STATUS  %%dPOWER OTHER STATUS Q METHOD OF DISCOVERY DISCOVERY DESCRIPTION Q32 7

5 8 9 E Q28 ~l0 10 0

12 Q29 13 NA 44 LCJQ31 45 46 DATA REVIEW 80 ACTIVITY CONTENT

[-ii] ~z RELEASED OF RELEASE AMOUNTOF ACTIVITY NA Q NA LOCATION OF RELEASE Q36 Q33 ~ZQ3 7 8 9 10 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION Q39

[ii~] ~00 7 8 9 0 Q 12 Z Qss 13 NA 11 80 PERSONNEL IN3URIES NUMBER DESCRIPTION Q41 8 ~OO O Q49 NA 7 8 9 11 12 80 LOSS OF OR DAMAGE TO FACII.ITY TYPE DESCRIPTION Q43 z Q42 NA 7 8 9 10 80 m ISSUED MN04 P U 8 L I C I TY DESCRIPTION ~ NA NRC USF ONI.Y o

7 4 8 9 10 68 69 80' NAME OF PREPARER H. M. CHADWELL PHDNE {616) 465-5901 X-316 a

0 P,. ' f l,

• 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