05000368/LER-1980-047-03, Updated 80-047/03X-1:on 800703,containment Atmosphere Radiation Monitor 2RITS-8271 Found Inoperable.Caused by High Temp Tripping Vacuum Pump Thermal Overload of Monitor. Overload Reset & Monitor Declared Operable

Updated 80-047/03X-1:on 800703,containment Atmosphere Radiation Monitor 2RITS-8271 Found Inoperable.Caused by High Temp Tripping Vacuum Pump Thermal Overload of Monitor. Overload Reset & Monitor Declared Operable

ML20003B341
Person / Time
Site:	Arkansas Nuclear
Issue date:	02/06/1981
From:	Shively C ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML20003B334	List: 05000368/LER-1980-047, Forwards Updated LER 80-047/03X-1
References
LER-80-047-03X, LER-80-47-3X, NUDOCS 8102100680
Download: ML20003B341 (1)

LER-1980-047, Updated 80-047/03X-1:on 800703,containment Atmosphere Radiation Monitor 2RITS-8271 Found Inoperable.Caused by High Temp Tripping Vacuum Pump Thermal Overload of Monitor. Overload Reset & Monitor Declared Operable

Event date:
Report date:
3681980047R03 - NRC Website

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UPDATE REPORT - PREVIOUS REPORT DATE 7/30/80 0

NRC FORM 366 U. S. NUCL E AR REGUtATORY COMMiLSION (7 77)

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1. tF,oH r D A rt 80 EVENT DESCRIPTION AND PRO 9AOLE CONSEQUENCES h Io 121 IDuring Mode 1 coeration. whilo maleinn a routine check of the Plant 1

i adiation Monitoring System (RMS), the Containment Atmosphere Radiation i

R ioi3; 101 1IMonitor. 2RITS-8271._was found to be inonerablo.

The Containment sumn I

in isi llevel and Containment Building Area Monitors remaine_d coerable.

No I

isimilar occurrences.

Other RMS occurrences were LER's 50-368/79-057, i

o s 1 o 111 179-067,80-043 and 80-046.

ReDortable oer T.S. 6.9.1.9.b.

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gi Room (monitor location).

The overload was reset & the monitor declared i rqT11 operable. ' Evaluation indicated pipe insulation, packing leak beat loads i ii i. i i & poor cooling air flow were causes. Ventilation system air ducts were i 8,,ggjocated to maximize heat rA"lovg},cqgidag in pukade mm.

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