05000327/LER-1980-050-03, /03L-0:on 800505,flow Switches FS-90-225 & FS-90-134 Found Inoperable,Which Resulted in Placing Plant Into Action 29.Caused by Debris Collecting on Flow Switch, Preventing Actuation.Switch Cleaned & Returned to Svc

/03L-0:on 800505,flow Switches FS-90-225 & FS-90-134 Found Inoperable,Which Resulted in Placing Plant Into Action 29.Caused by Debris Collecting on Flow Switch, Preventing Actuation.Switch Cleaned & Returned to Svc

ML19323G648
Person / Time
Site:	Sequoyah
Issue date:	06/02/1980
From:	Hereford J TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19323G644	List: 05000327/LER-1980-050, Forwards LER 80-050/03L-0 05000327/LER-1980-050-03, /03L-0:on 800505,flow Switches FS-90-225 & FS-90-134 Found Inoperable,Which Resulted in Placing Plant Into Action 29.Caused by Debris Collecting on Flow Switch, Preventing Actuation.Switch Cleaned & Returned to Svc
References
LER-80-050-03L, LER-80-50-3L, NUDOCS 8006060416
Download: ML19323G648 (2)

LER-1980-050, /03L-0:on 800505,flow Switches FS-90-225 & FS-90-134 Found Inoperable,Which Resulted in Placing Plant Into Action 29.Caused by Debris Collecting on Flow Switch, Preventing Actuation.Switch Cleaned & Returned to Svc

Event date:
Report date:
3271980050R03 - NRC Website

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[TT 1 i Flow switches FS-90-225 and FS-90-134 (Condensate Demin. Effluent an_d 1,

8I Essential Raw Cooling k'ater Effluent Monitorelwere found..inspetable

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8 L which resulted in placing the glant into Action 29 of LCo 3.3.3.9.

The [g,g Eswitches _ provide low flow alarm to_the operator. There was no dang g i

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[ pq l Debris collects on flow switch and prevents switch actuation. The switch j

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615-Ba?-n?cs e006060V/(,

o EVALUATION LOGIC FOR PART 21 SQRO-50-327/

Originating Document No. 80050_and PRO' 1-80-107 &

Yes Eo 1-80-108 I. Deficiency of a plant necurity system?

X 1.

Could defect create a substantial safety hazard?

X If yes, report as part 21.

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II. Is the component necessary to ensure:

1.

The integrity of the reactor coolant boundary?

X 2.

The capabili ty to shut down reactor and maintain it in a safe shutdown condition?

X 3.

The capability to prevent or mitigate the consequences of accidents which could result in potential cffsite exposure comparable to those referred to in 10 CFR 100.117 X

't III. Is defect in a basic component one that has been accepted for ownership?

X Installed for une or operation?

X If a yes in II and III above, could defect create a substantial safety hazard?

X If yes, report as part 21.

IV.

Is defect in a baste component:

A condition that could contribute to exceeding of safety limit?

X If yes to one of II and IV above, report as part 21.

S 3