05000324/LER-1979-003-03, /03L-0 on 790130:reactor Scrammed on Average Power Range Monitor High Flux.Caused by stem-disc Separating, Causing a Momentary Pressure Spike.Repairs to Appropriate Valve Will Be Made

/03L-0 on 790130:reactor Scrammed on Average Power Range Monitor High Flux.Caused by stem-disc Separating, Causing a Momentary Pressure Spike.Repairs to Appropriate Valve Will Be Made

ML19261B843
Person / Time
Site:	Brunswick
Issue date:	02/27/1979
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19261B839	List: 05000324/LER-1979-003, Forwards LER 79-003/03L-0 05000324/LER-1979-003-03, /03L-0 on 790130:reactor Scrammed on Average Power Range Monitor High Flux.Caused by stem-disc Separating, Causing a Momentary Pressure Spike.Repairs to Appropriate Valve Will Be Made
References
LER-79-003-03L-01, LER-79-3-3L-1, NUDOCS 7903070313
Download: ML19261B843 (1)

LER-1979-003, /03L-0 on 790130:reactor Scrammed on Average Power Range Monitor High Flux.Caused by stem-disc Separating, Causing a Momentary Pressure Spike.Repairs to Appropriate Valve Will Be Made

Event date:
Report date:
3241979003R03 - NRC Website

text

..iG F O R *.13t,G d' r. NUCLE AR REGULATORY COf. MISSION

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LICENSEE EVENT REPORT

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DEFORT DA t FC EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h lOn 1/29/79., !! nit No. 2 reactor serained on APIC4 high fl.ux.

During the following

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l reactor startup, it was discovered that main steamline "A"

indicated zero floe.

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10 s l flux reactor scram.

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~ wSE DESCRIPTION AND CORRECTIVE ACTIONS h NTV's in steamline "A" were closed and doncti"ated on ]/1n/70 y r t e r a T c c,y,,,-c s

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1 Ithe sten-disc separation.

At this tire it has not been de t ermined wh i ch '"4TV h w I

l experienced the stem-disc separation, inboard valve B21-F022A or outboard valve l

g lB21-F028A.

Repairs to the appropriate valve will be made durine the unconine refuelinej i

3 joutage.

A revision to this report will be submitted describine the cause for stem-discl ii 4

e a separation and corrective actions taken after repairs have been completed, sa

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