05000244/LER-1980-007-03, /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

/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: 05000244/LER-1980-007, Forwards LER 80-007/03L-0 05000244/LER-1980-007-03, /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
References
LER-80-007-03L, LER-80-7-3L, NUDOCS 8010060285
Download: ML17261A240 (2)

LER-1980-007, /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

Event date:
Report date:
2441980007R03 - NRC Website

text

U. S. NUCLEAR REGULATORY COMMISSION 80-007/03L-0 LICENSEE EVENT REPORT (CAR 1373)

Qi (PLEASE PRINT OR TYPE ALLREQUIRED INFORMATION) 6 1,00-00000-00341111Q4~Q5 NRC FORM 366 (7-72 I~

CONTROL BLOCK:

I N Y R

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25 26 LICENSE TYPE 30 57 CAT 58 0

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LICENSEE CODE LICENSE NUMBER 14 15 0Q 80 7

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8 SOURCE 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES Q10 During quarterly calibration of RPS flux tilt controllers technician found L>

~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.

Allother variables of trip function were operable, as well as the three redundant channels

~

~DS 7

8 9

80 1

~OB 7

8 SYSTEM

CAUSE

CAUSE COMP.

VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE

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~E Q13 I

N S

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U Q14

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10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION LER(RO EVENT YEAR REPORT NO.

CODE TYPE NO.

Q17 8110111 ~80

~

~00 7

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~03

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0 21 22 23

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24 26 27 28 29 30 31 32 ACTION FUTURE EFFECT SHUTDOWN ATTACHMENT NPRDP PRIME COMP.

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

SUPPLIER MANUFACTURER

~CO18 ~Z Q19

~ZQ20

~Z Q21 0

0 0

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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 CE3 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITYQ36 Q-Q ~z Q ~zQ34 NA 7

8 9

10 44 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION Q36 7 ~00 0

037 MZ 038 7

8 9

11 12 13 PERSONNEL INJURIES NUMBER DESCRIPTIONQ41

~00 0

040 NA 80 LOCATIONOF RELEASE Q36 NA 80 45 80 80 7

8 9

11 12 LOSS OF OR DAMAGETO FACILITYQ43 TYPE

DESCRIPTION

z Q4, 9

10 PUBLICITY ISSUED DESCRIPTION~

8 01006m Q$Q NAME OF PREPARER NA 7

8 NRC USE ONLY NA O

68 69 80 48 PQNE.315-524-4446, ext. 248 7

8 Clair Edgar 7

8 9

FACILITY

~3O METHOD OF STATUS SI POWER OTHERSTATUS ~

DISCOVERY DISCOVERY DESCRIPTION Q32 1

5

~~Q28 ~~~

0 Q29 NA

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