ML20009B839

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Ro:While Performing Plant Testing,Rcs Boron Concentration Decreased Approx 100 Ppm.Probably Caused by Failure of Demineralizer Water Storage Tank Outlet Valve to Properly Close Following Resin Sluice Operation
ML20009B839
Person / Time
Site: Maine Yankee
Issue date: 07/10/1981
From: Wood E
Maine Yankee
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
NUDOCS 8107170231
Download: ML20009B839 (1)


Text

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&n 450. MD 2 j

Wiscasset, Maine 04578

_ _ _,e July 10, 1981 eardp's mited States Ntc1 car Ityulatory Ormionim

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nirectorate of a.yulatnry operatims

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% % 7 631 Park Awnue King of Prussia, rtmnsylvania 19406 (p /

t 30 g4 Ib fermm:

Limnre tbi IPR-36 (Ibcket tb. 50-309)

Dtur Sir:

Pursuant to the reluimients of Todmicnl Wficatim 5.9.1.6.d, the mine Yankee Atonic Ibatr 0sqnny hereby sti2 nits tJe following report.

During routino reftmling operations, wilile perfoming plant testing, it was diroowred that the R.C.S. bottn concentrat.im led

&esx1 approximat.ely 100 PPM.

Borm umcontratius uma inmxiiately increased. Prrbablo cause of event wss failure of Daninentli?cr water storage tank outlet valw to properly clue *3 following resin sluice operatim.

During tie mtire period adyp2 ate ahutdkn nurgin was mintairu3.

Sincerely, MNINE YNIKFE R104IC IUrER CmPNCI J

Edwin C.

Plant limager ECW/dle 60 lEPAE88Rofiggfg, PDR