ML18037A209

LER 79-025/03L-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

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: ML17053B234 ML18037A209
References
LER-79-025-03L, LER-79-25-3L, NUDOCS 7911300484
Download: ML18037A209 (2)

Text

I7.77 I LlCENSEE EVENT REPORT CONTROL BLOCK: Ql (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

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7 8 9 N Y N LICENSEE CODE t 1 P 1Q20 14 15 0 0 0 0 LICENSE NUMBER 0 0 - 0 0 25 024 26 1 1 LICENSE TYPE 1

30 04~0557 CAT 58 CON'T 1 Qs 1 1 1 9 Q9 SOURCE QB '75 80 7 8 60 61 DOCKET NUMBER 68 69 EVFNT DATE 74 REPORT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES QIO O 2 During steady state operatio'ns, personnel performing instrument sur-veillance tests were unable to zero 811 Side APRH Flow Converter. The

~03 error in flow indication was in the conservative direction and all trip

~Os points were operable. The faulty converter unit was replaced by a new

~OB unit and the problem was eliminated. This event had no safety implica-

~O7 tions ~

~os 80 7 8 9 COMP. VALVE SYSTEM CAUSE CAUSE SUBCODE COMPONENT CODE SUBCODE SUBCODE

~OB 7 8

~IA 9

CODE 10 0>>

CODE L~J0" 11

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13

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18 8 ~OP.

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~z 20 g16 REVISION SEQUENTIAL OCCURRENCE REPORT QTT LF R,PRO REPORT ACTION . FUTURE EVENT YEAR

~79 21 22 EF F ECT

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23 SHUTDOWN

~OZ 24 REPORT NO.

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27 M~

ATTACHMENT 28 CODE 29 NPRDP TYPE UL 30 PRIME COMP.

LJ 31 .

NO.

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

~cQ~zo9 33 34

~zQ2o 35

~zQ 36 37 0 0 0 0 40 41 N Q2 ~Q2 42

~NQ 43 44 G 0 8 0 47 Q

CAUSE DESCRIPTION AND CORRECTIVE 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

7 9 FACILITY STATUS POWER OTHER STATUS ~ METHOD OF DISCOVERY DISCOVERY DESCRIPTION Q32 0

91 5 ~E 025 ~09 6 Qgg ffA 44 45 8

46 Instrument Surveillance Test 80 7 8 9 10 12 13 ACTIVITY CONTENT RELEASEO OF RELEASE AMOUNT OF ACTIVITYQSS LOCATION OF RELEASE Q Z QSZ Q34 NA 45 NA 80 7 8 9 10 11 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION Q39 2 ~00 0 QTT Z Qgg ffA 80 7 8 9 11 12 13 PERSONNEL IENBURIES 12 80 7 8 9 11 LOSS OF OR DAMAGE To FACILITY Q43 9

/

8 9 10 80 O

PUBLICITY ISSllED

~AQ44 DESCRIPTION

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~ P7 91 l 0 0 0 gP NRC USE ONLY 7 8 9 10 68 69 80 o (315) 343-2110 Ext 1558 0 L

NAME OF PREPARER PHONE:

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