ML17261A240

LER 80-007/03L-0:on 800829,controller TC-402R for Channel II Did Not Respond to Change in Input.Caused by Faulty Main Amplifier Bridge Assembly & Low Limit Transmitter.Controller Replaced & Calibr

ML17261A240
Person / Time
Site:	Ginna
Issue date:	09/29/1980
From:	Edgar C ROCHESTER GAS & ELECTRIC CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML17250A673	List: ML17250A672 ML17261A240
References
LER-80-007-03L, LER-80-7-3L, NUDOCS 8010060285
Download: ML17261A240 (2)

Text

NRC FORM 366 U. S. NUCLEAR REGULATORY COMMISSION (7-72 I~ 80-007/03L-0 LICENSEE EVENT REPORT (CAR 1373)

CONTROL BLOCK: Qi (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

[OOQ 7 8 9 N Y R E LICENSEE CODE G

I 1,00-00000-00341111Q4~Q5 14 15 6

LICENSE NUMBER 25 0 26 LICENSE TYPE 30 57 CAT 58

~O CON'T REPQRT SOURCE

~L~B p 5 p p 0 2 4 4 Q 69 0 8 2 EVENT DATE 9 8 0 74 s 0 75 9 2 9 REPORT DATE 8 0Q 80 7 8 60 61 DOCKET NUMBER 68 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES Q10 During quarterly calibration of RPS flux tilt controllers technician found L> con-

~O3 troller TC-40 2R for channel II not responding to change in input (T. S . 3 . 5 . 1 . Control-4 ler output lowers overtemp and overpress . delta-T setpoints if QL> U exceeds 18% ~

6 Channel II was in trip mode for test and remained so until restored to operable, pro-viding proper degree of redundancy. All other variables of trip function were operable, as well as the three redundant channels ~

~DS 80 1 7 8 9 COMP.

SYSTEM CAUSE CAUSE VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE

~OB ~1A Q11 B O72 ~E Q13 13 I N S T R U 18 Q14 ~CQ>>

19

~Z 20 O18 7 8 9 10 11 12 SEQUENTIAL OCCURRENCE REPORT REVISION Q17 LER(RO 8110111 ACTION FUTURE EVENT YEAR

~80 21 22 EFFECT

~

23 ~

SHUTDOWN

~00 24 REPORT NO.

7 26

~W 27

~03 28 ATTACHMENT CODE 29 NPRDP TYPE

~L 30 PRIME COMP.

31 NO.

32 0

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

~CO18 ~Z Q19 ~ZQ20 ~Z Q21 0 0 0 0 ~N Q23 ~YQ24 ~N Q25 F 1 8 0 Q2.

33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS Q27 Faulty main amplifier bridge assembly and low limit transistor. Controller was replaced with qualified spare, calibrated and tested successfully. Controller is a Foxboro Model 62H-2E.

3

~14 80 7 8 9 FACILITY STATUS

~~~

SI POWER 0

OTHERSTATUS NA

~

~3O METHOD OF DISCOVERY

~BQ31 Technician observation DISCOVERY DESCRIPTION Q32 CE38 1 5 ~~Q28 9 10 12 Q29 13 44 45 46 80 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT OF ACTIVITYQ36 LOCATION OF RELEASE Q36 Q-Q ~z Q ~zQ34 NA 45 NA 80 7 8 9 10 44 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION Q36 7 ~00 0 037 MZ 038 13 80 7 8 9 11 12 PERSONNEL INJURIES NUMBER DESCRIPTIONQ41

~00 0 040 NA 80 7 8 9 11 12 LOSS OF OR DAMAGE TO FACILITY TYPE DESCRIPTION Q43 z Q4, NA 7 8 9 10 O

ISSUED PUBLICITY DESCRIPTION ~ NA NRC USE ONLY 68 69 80 48 7 8 8 01006m Q$Q Clair Edgar PQNE.315-524-4446, ext. 248 NAME OF PREPARER

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