ML19309F422

LER 80-014/03L-0:on 800328,while Performing Check Source Test,Auxiliary Bldg Vent Noble Gas Monitor Had Module Power Problem & Failed in Svc.Caused by Zener Diode IN4740 & Transistor Fmps A13 Shorting Out

ML19309F422
Person / Time
Site:	Sequoyah
Issue date:	04/25/1980
From:	Hereford J TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19309F415	List: ML19309F414 ML19309F422
References
LER-80-014-03L-02, LER-80-14-3L-2, NUDOCS 8004290446
Download: ML19309F422 (1)

Text

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i E t power problen aiid' failed in'servide at 0750 CST while perfor=ing check j

go,,,; source test. LCO 3.3.3.10 Action 34'(SI-415) was initiated. Monitor T'oTT1 I was repaired and returned to service at 0930 CST. There was no dancer I E

i r3 Fs 1 I to the health and safety of the public. Previous occurrences - none.

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'mI source trio inhibit circuit of General Atomic Radiation Analv er Model RP-30 causing the analyzer power supply to trip. The diode and gi transistor were replaced and the radiation analyzer was returned to  ;

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