ML20086H186

AO 50-271/72-15:on 721219,HPCI Steamline High Differential Pressure Switch DPS 23-77 Tripped at 200 Inches of Water. Sensor Immediately Reset & Verified within Limits

ML20086H186
Person / Time
Site:	Vermont Yankee
Issue date:	12/20/1972
From:	Rosalyn Jones VERMONT YANKEE NUCLEAR POWER CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20086H184	List: ML20086H181 ML20086H186
References
AO-50-271-72-15, VYV-2378, NUDOCS 8401160046
Download: ML20086H186 (1)

Text

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9: o VERhiONT YANKEE NUCLEAR POWER CORPORATION -

scVENTY SEVEN OMOVE STitECT-

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VYV*2378) P..o;.nox.ter f ,

vanNONi VEMMONT 053541 December: 20;1972'.

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l l @j Unitodi Statca: Atomio: Energyt Comissions J Directorate ofJ Eoguintory/ Operations, Region-I

.M 970)BroadiStreett Howark,,NewiJerooy 07102:

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,h REFEREllCE: Operating. License DPR*28'.

,j + Docket Ho. 50-271)

'.;1 ' AbnormallOccurrence No.,A0,72-15'

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I L Au defined by>Technient Specifications for the Vernont Yankee-

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Nuclear Power Station, Section 6.7.A'.c, we are reporting.the follosing Abnomal' Occurrence au A0-72-15 nndt confitning our toicphone conversation.

! f with.your officos y) .. . ~ . . .I h Ati approximatolyr1200'.on December 19,1972'whilo porfomina routino-

! ourveillance on the llP01 systen, tho IIPCI. nteanline high differential-

', procuure r.uitch-(DPS.23-77) van.found' to bn tripping ot- 203 luchon of<

j watorr Thin is.above the.value of 180'+5.$nches of ' water specified by.

Tabloi3.2.2.2'ofi Technical' Specifications.. This censor functions :no,an-energized contact to outo.close the l!PCI inointion valvon:on'a steaneline high. differential' (lino break)' pressure. Thn reactor. uas : operating.at-opproxinatoly 55% powor at tho time of thiu incident..

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' Tho.nonpos wau

3rnediately roaut, functionally tested; and varified:

to.ho.operabin within tho toleran::o opecified.- This renedial' action vau-

hy completed. ini a + time opsniwhich r precluded, the necessity 'of furthos action.

s l 15 Very.'truly yours ,

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. f.' VLTd(0NT YANKEE 1RICLY.AR> POWER; CORPORATION

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8401160046 721221

, PDR ADOCK 05000271 RobertF.Nonen.

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! Plant Superintendent.

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