ML20065B565

Telecopy RO 83-003:on 830210,during Insp of PORV RC-RV2, Corrosion Identified in Inconel & Austenitic Steel Parts. Pilot Valve Piston & Spring Also Found Corroded.Cause Under Analysis

ML20065B565
Person / Time
Site:	Three Mile Island
Issue date:	02/11/1983
From:	Toole R GENERAL PUBLIC UTILITIES CORP.
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
RO-83-003, RO-83-3, NUDOCS 8302230225
Download: ML20065B565 (1)

Text

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DESIGIATEDOdIGIUAL Certified By N ~'

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n.f cowiewr. 0c sp y..a t *g.57 717.c44 762: i "kTI M N WntC* s Caect 0.at Number 717-94E-8003 rebruary 11. M S.*l 3200-E3-059 j u

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King of Prussia, PA liN.Of f Kuhjcet: Licensee Event Report No.53-003 Lear P.r. !!avnes : {

1 i.e : Operating Licencoe DPR-50 (

Doriet 50-289 l Tr.15 telecoPY 15 to CCnfirti the CJnversatien between ?ir. T. Toum* , Ret. ion 1 NRC and *:r. X. $ElECn SuDCrViSOY I.* nit i Review Prograc.,'IMI-1, at 1115 hours0.0129 days <br />0.31 hours <br />0.00184 weeks <br />4.242575e-4 months <br /> en '

?ccruary li, 1953, lhe event den;ribed belov var, declared reportabic at 1100 hours0.0127 days <br />0.306 hours <br />0.00182 weeks <br />4.1855e-4 months <br />.

At 1500 hours0.0174 days <br />0.417 hours <br />0.00248 weeks <br />5.7075e-4 months <br /> er 2.'10/c'I. initi.e.1 disasse .ble and inspection of the Power Oncrated trIief valve O'C-RV2) was ce=riered). This insuection was beins performed te con-

• tire that the corresion reper:ed w the NRC by LER No. P2-Oli on an earlier redel of this valve was not recurring it. T'!I-l's c xtended cold shutdown environment. This ir.spection has identified ths:. cerrosien hn= occurred in the ineonel and :::artenr.1 tc steel parts in the presently installed valve. Furthermore, althour.n the main vr.lyc  !

disc van found ir. the enid position, the pilet valve piston and sprins were. found q corroded $n the full ooen position. The corroded condition of this valve is considered to require tenedini action er corrective :aeasures to prevent potential n:alfunction of this valve, and iac considered rn he reportable within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> in accordance .with Ter.hnical Spee!fier.tien 6.9. A.9. This was determined to be reportable at 1100 hours0.0127 days <br />0.306 hours <br />0.00182 weeks <br />4.1855e-4 months <br /> o v- February 11,1983 by T?:T-1 Pinnt Reviev Group. -

1 Ts11ere analysis of the cerroded parts is beine. intiated to determine the cause and l utprepriate corrective ar.tions necesr.nr. tr. assure future valve onerabilitv. 1 It.e detalis of this occurrence and the corrective actions to prevent its. recurrence vill be provided within 14 days.

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