05000315/LER-1979-061-03, /03L-0:on 791111,during Startup,Steam Generator 4 Steam Flow Channel 1 Indicated 21% Lower than Redundant Channel.Caused by Oil Leak from Bellows to Transmitter Body Causing Drift Out of Spec.Transmitter Replaced

/03L-0:on 791111,during Startup,Steam Generator 4 Steam Flow Channel 1 Indicated 21% Lower than Redundant Channel.Caused by Oil Leak from Bellows to Transmitter Body Causing Drift Out of Spec.Transmitter Replaced

ML17326A401
Person / Time
Site:	Cook
Issue date:	12/11/1979
From:	Delong S INDIANA MICHIGAN POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17326A400	List: 05000315/LER-1979-061-03, /03L-0:on 791111,during Startup,Steam Generator 4 Steam Flow Channel 1 Indicated 21% Lower than Redundant Channel.Caused by Oil Leak from Bellows to Transmitter Body Causing Drift Out of Spec.Transmitter Replaced 05000315/LER-1979-062-03, /03L-0:on 791111,inoperable Steam Flow Channel 1 Taken Out of Trip Condition During Investigation of Channel Spec Reading.Caused by Incorrect Panel Indicator Labeling. Channel Placed in Trip Mode & Labeling Corrected ML17326A399
References
LER-79-061-03L, LER-79-61-3L, NUDOCS 7912170252
Download: ML17326A401 (1)

LER-1979-061, /03L-0:on 791111,during Startup,Steam Generator 4 Steam Flow Channel 1 Indicated 21% Lower than Redundant Channel.Caused by Oil Leak from Bellows to Transmitter Body Causing Drift Out of Spec.Transmitter Replaced

Event date:
Report date:
3151979061R03 - NRC Website

text

NRC FORM 366 U. S. NUCLEAR REGULATORY COMMISSION IY

{7.77J tCENSEE EVENT REPORT

~

41 4

CONTROL BLOCK:

Q1 (PLEASE PRINT OR TYPE ALLREQUIRED INFORMATION)

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LICENSEE'CODE 14 15 LICENSE NUMBER 25 26 LICENSE TYPE30 57 CAT 58 4

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9 Q9 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES Q10

~02 DURING THE START UP OF UNIT 1

NUMBER 4 STEAM GENERATOR STEAM FLOW CHANNEL I WAS FOUND TO BE INDICATING APPROXIMATELY 21 PER CENT LOWER THAN THE REDUNDANT

~o4 CHANNEL.

THIS CONDITION WAS NON CONSERVATIVE WITH RESPECT TO T.S.

TABLE

~oo 3.3-1 ITEII 15 AND TABLE 3.3-3 ITEMS If AND 4d.

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SUPPLIER MANUFACTURER Q18 ~Q14

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0 Qoo 33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS Q27 o

UPON INSPECTION OF THE TRANSMITTER (MFC 140) IT WAS FOUND THAT OIL HAD "'APPARENTLY LEAKED FROM THE BELLOWS, INSIDE THE TRANSMITTER BODY, CAUSING IT TO DRIFT OUT OF SPECIFICATION.

THE TRANSMITTER WAS REPLACED AND WAS SENT TO ITT 3

BARTON FOR REPAIR AND EVALUATION OF THIS PROBLEM.

THE ACTION ITEM RE(UIREMENTS 4

FOR T.S.

TABLES 3.3-1 AND 3.3-3 WERE FULFILLED.

CO LJO ~O ACTIVITY CONTENT RELEASED OF REI.EASE AMOUNTOF ACTIVITY 6

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10 11 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION A3 7 ~00 0 Oo~ZQo NA 7

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11 12 13 PERSONNEL INJURIES NUMBER DESCRIPTIONQ41 4

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FACILITY STATUS

'A POWER OTHER STATUS QBO 6

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~AQ31 OPERATOR OBSERVATION 45 80 80 80 80 7

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