05000220/LER-1979-025-03, /03L-0:on 791027,during Surveillance Testing, Personnel Unable to Zero Side Average Power Range Monitor Flow Converter 11.Caused by Component Failure.Entire Unit Replaced & Problem Eliminated

/03L-0:on 791027,during Surveillance Testing, Personnel Unable to Zero Side Average Power Range Monitor Flow Converter 11.Caused by Component Failure.Entire Unit Replaced & Problem Eliminated

ML18037A209
Person / Time
Site:	Nine Mile Point
Issue date:	11/19/1979
From:	Duda E NIAGARA MOHAWK POWER CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML17053B235	List: 05000220/LER-1979-025, Forwards LER 79-025/03L-0 05000220/LER-1979-025-03, /03L-0:on 791027,during Surveillance Testing, Personnel Unable to Zero Side Average Power Range Monitor Flow Converter 11.Caused by Component Failure.Entire Unit Replaced & Problem Eliminated
References
LER-79-025-03L, LER-79-25-3L, NUDOCS 7911300484
Download: ML18037A209 (2)

LER-1979-025, /03L-0:on 791027,during Surveillance Testing, Personnel Unable to Zero Side Average Power Range Monitor Flow Converter 11.Caused by Component Failure.Entire Unit Replaced & Problem Eliminated

Event date:
Report date:
2201979025R03 - NRC Website

text

I7.77 I LlCENSEE EVENT REPORT Ql (PLEASE PRINT OR TYPE ALLREQUIRED INFORMATION) 6 0

0 0

0 0

0 0 024 1

1 1

04~05 LICENSE NUMBER 25 26 LICENSE TYPE 30 57 CAT 58 CONTROL BLOCK:

I [os]

N Y

N t 1 P 1Q20 0

14 15 7

8 9

LICENSEE CODE CON'T Qs 1

1 1

9 Q9 EVFNT DATE 74

'75 REPORT DATE 80 7

8 O

2 QB 1

SOURCE 60 61 DOCKET NUMBER 68 69 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES QIO During steady state operatio'ns, personnel performing instrument sur-

~03 veillance tests were unable to zero 811 Side APRH Flow Converter.

The error in flow indication was in the conservative direction and all trip

~Os

~OB

~O7 points were operable.

The faulty converter unit was replaced by a new unit and the problem was eliminated.

This event had no safety implica-tions

~

~os 7

8

~OB 7

8 80 9

SYSTEM

CAUSE

CAUSE COMP.

VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE

~IA 0>>

L~J0"

~s 0>>

6 '

" 8

~OP.

~z g16 9

10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION LF R,PRO EVENT YEAR REPORT NO.

CODE TYPE NO.

QTT REPORT

~79

~

~OZ 6

U~

M~

UL LJ 21 22 23 24 26 27 28 29 30 31 32 ACTION. FUTURE EF F ECT SHUTDOWN ATTACHMENT NPRDP PRIME COMP.

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

SUPPLIER MANUFACTURER

~cQ~zo9

~zQ2o

~zQ 0

0 0

0 N

Q2

~Q2

~NQ G

0 8

0 Q 33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION ANDCORRECTIVE ACTIONS Q27 Technicians were unable to zero APRH flow converter unit due to compo-nent failure.

The entire unit was replaced and the roblem was elim-inated.

3 4

METHOD OF OTHER STATUS ~

DISCOVERY 8 0 45 46 45 7

9 FACILITY STATUS 91 POWER 5

~E 025 ~09 6

Qgg ffA 7

8 9

10 12 13 44 ACTIVITY CONTENT RELEASEO OF RELEASE AMOUNTOF ACTIVITYQSS Z

QSZ Q34 NA 7

8 9

10 11 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION Q39 2

~00 0

QTT Z Qgg ffA 7

8 9

11 12 13 PERSONNEL IENBURIES DISCOVERY DESCRIPTION Q32 Instrument Surveillance Test LOCATIONOF RELEASE Q NA 80 80 80 9

8 7

8 O

7 8

9 11 12 LOSS OF OR DAMAGETo FACILITYQ43 9

10 PUBLICITY ISSllED DESCRIPTION~

~AQ44

.NA 9

10 NAME OF PREPARER 80 P7 9 1l 0 0 0 gP/

NRC USE ONLY 80 68 69 80 o

(315) 343-2110 Ext 1558 0

PHONE:

L

,0