05000316/LER-1979-025-03, /03L-0 on 790709:while Reviewing Axial Power Distribution Monitoring Sys Printouts,Discovered Two Occasions in Which Results of Only One Detector Scan Printed Out.Cause Under Investigation

/03L-0 on 790709:while Reviewing Axial Power Distribution Monitoring Sys Printouts,Discovered Two Occasions in Which Results of Only One Detector Scan Printed Out.Cause Under Investigation

ML17317B430
Person / Time
Site:	Cook
Issue date:	08/08/1979
From:	Rischling J INDIANA MICHIGAN POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17317B429	List: 05000316/LER-1979-025-03, /03L-0 on 790709:while Reviewing Axial Power Distribution Monitoring Sys Printouts,Discovered Two Occasions in Which Results of Only One Detector Scan Printed Out.Cause Under Investigation
References
LER-79-025-03L-02, LER-79-25-3L-2, NUDOCS 7908140637
Download: ML17317B430 (2)

LER-1979-025, /03L-0 on 790709:while Reviewing Axial Power Distribution Monitoring Sys Printouts,Discovered Two Occasions in Which Results of Only One Detector Scan Printed Out.Cause Under Investigation

Event date:
Report date:
3161979025R03 - NRC Website

text

NRC PORM 366 U. S. NUCLEAR REGULATORYCOMMISSION I7.77)

ICENSEE EVENT REPORT CONTROL BLOCK:

0 (PLEASE PRINT OR TYPE ALLREQUIRED INFORMATION)

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LICENSEE'CODE 14 16 LICENSE NUMBER 25 26 LICENSE TYPE 30 57 'CAT 58 CON'T 1

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00 8

0" 8 7

9 09 SOURCE 7

8 60 61 DOCKET NUMBER 68 69 FVENT DATE 74 75 REPORT DATE, 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES 010 WHXLE REVIEWING APDMS PBXNTOUTS 4 IT WAS DISCOVERED THAT ON TWO OCCASS IONS p JULY 9 AT 1 3 1 9 AND JULY' 1 AT 2 1 2 8, THE RESULTS OF ONLY

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~OS ONE'ETECTOR SCAN WAS PRINTED OUT.

THXS FAILED TO MEET THE SUR-VEXLLANCE REQUREMENTS OF T.S. 4.2.6.2, WHICH'EQUIRES 2

SCANS TO BE MONITORED.

ON BOTH OCCASSIONS ADDITIONAL SCANS WERE TAKEN WITH-

~O7 OUT DIFFICULTY.

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8 7

8 80 SYSTEM

CAUSE

CAUSE COMP.

VALVE CODE CODE SUBCODE COMPONENT CODE o

SUBCODE SUBCODE

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10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT

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REVISION LERJRP EVENT YEAR REPORT NO.

CODE TYPE NO.

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~O 21 22 23 24 26 27 28 29 30 31 32 ACTION FUTURE EFFECT SHUTDOWN ATTACHMENT NPRDP PRIME COMP.

COMPONENT TAKEN ACTION ON PLANT METHOD HOURS &22 SUBMITTED FORM BUB.

SUPPLIER MANUFACTURER 01S ~>01e

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02B 33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS 027 THIS PROBLEM XS STILL UNDER XNVESTIGATION AS IT XS INTERMITTENT IN NATURE AND THE CAUSE HAS NOT YET BEEN IDENTXFIED.

UNTlL'HE CAUSE IS IDENTIFIED AND REMEDIED, OPERATIONS PERSONNEL ARE CLOSELY MON-ITORXNG THE APDMS PRXNTOUTS INSURING THE T.S.

SURVEILLANCE REQUIRE-4 MENTS ARE FULFILLED.

7 8

9 FACILITY STATUS

% POWER OTHER STATUS 0 s

E 2S 1

0 0

29 NA, cq LJO ~0 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITY

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10 44 PERSONNEL EXPOSURES NUMBER TYPE

DESCRIPTION

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11 12 13 PERSONNEL INJURIES NUMBER DESCRIPTION 41

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Q4o NA METHOD OF DISCOVERY DISCOVERY DESCRIPTION 032 031 DATA REVIrN'5 46 LOCATION OF RELEASE0 45 FOE/ ps' 80 80 80 80 7

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9 10 NAME OF PREPARER J. L. Rischling 9

11 12 LOSS OF OR DAhlAGETO FACILITY 43 TYPE

DESCRIPTION

z Qoo NA 9

10 PUBLICITY ISSUED DESCRIPTION~

044 NA PHONE; 80 68 69616-465-5901 80 NRC USE ONLY toa 80 a 0

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