ML20058K774

Ro:On 740513 During Primary Containment Leak Rate Test, Leakage Observed from Vent of Test Solenoid for torus-to-drywell Vacuum Breaker.On 740516,torus Entry Made & Tubing to Test Operator Found Open.Air Line Will Be Plugged

ML20058K774
Person / Time
Site:	Monticello
Issue date:	05/16/1974
From:	Larson C NORTHERN STATES POWER CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
NUDOCS 9102140379
Download: ML20058K774 (1)

Text

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leur1% 1974:

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Beme-Ms.. Keppler:- .

MRfrMMn MK!t2 Alt GENEPATE:Gr PUJG

- !ltschot: th 50-26F License-No::;. DPR41'

'Daring;. tl= .imary cci ' - c.1J rate: test: car.Iity IT,.::rr:s-to&/ lir7% .lcakage-wear veli. w2:n cbserved. freer tha-vmt of the- test'solencid for: 'Gf breaker Cn.M17 li,1974; ac tcrus stry ras r.sie. andr.the 3/!P tdin.g tothe test. opentor for. 'G vactsza. breaker. velve was futrE cpen. to: tha cenW"t..

stmosphere. 'Ihis -n1Ioni. a; direct path. for l'eakage fm. the prW oc : ine mart: tcr the seemi-r c=ntair=ent. via,tha test. schr.cid.v.1w vnt. . Tha tsing was operr frem September 30'.197I, whezr vew . breaker. 'Gb w;4 re:::ovsd- fer; testr.;

tat 11. May II,.1974, .vinen.The vec.t. line frc:a the. test solmoileW ofWh/'

_. cre +aimrmt' was.- cc=ned... During this.pe: icd of tiry pri=sr/ c=J.icment intefri t7 was not. satisfied. is.wh' by Technical Suecificttien.J.7,A.. Tiw 1c %2ge-thr:Up 20

. the. open lise: was fot=d to..be wvximately 3.0. wight. peremt. of ther ca".an=

air.per. 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />st at: 4r psigu .

Prf.os. tot plant eLu.. tup the air-line. In the. terur will..be pittymi -

hvec.7 t uly, C. .

- P1matplanagezr . -

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oc;:: J.T 0%szy,.DL wee of iAcewtsi=g*. .

G Chunoff- .

Mh:r.esota; Pel-Itc.ictr.Centrol Agency _

l Attr.: E.A.Pryrina: .

Film: . .,

Osp4w- sentby telecopier to- Keenler and 0'Ibarr. .

9102140379 740516 CF ADOCK 05000263 CF 3,

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