ML19308A453

Discusses Review Re ASME Code,Section XI Exemption of ECCS Components from Inservice Insp Based on Water Chemistry Control.Water Chemistry Control to Minimize Stress Corrosion Is Unacceptable Basis for Exemption from Insp

ML19308A453
Person / Time
Site:	LaSalle
Issue date:	08/08/1979
From:	Knight J Office of Nuclear Reactor Regulation
To:	Varga S Office of Nuclear Reactor Regulation
References
MS-24-12, TAC-10985, TAC-11316, NUDOCS 7910190241
Download: ML19308A453 (3)

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jM d. Review stateE%s%;oMtar: Chemistry ;4MWrM:%..QS 19J. Descriptfo of i j 2 .,. ~ MDiMSWC'WCI?.&&&jast?s Response RepfrWLffsQ$4JE - 1ta .,grThe Natartals'Istegrity;$se$QG);A~*'iR&G$V'.Y,,&Q ~ f a I'"K J^ '~ t$sa ef=the Materials' Engineering Branch.. Division . m of' 5ystema Safety. hes reviamed.the esa or the section II " chemistry control" e > u esempties in the preserviesMaspectica ~(PSI)" program fbr la Salla County l ' w. Station... Paragraph.DC-1220(c) er. 5ection II.ef ths. ASIE Code.1974 Edition, 22 permits the exemptian'fhne esaufsstion of".ECCS components 3rovided that the - l .yGcf control of unter, chemistry,isJurified by; periodic sampling and testing to l " stainiza corrosive effects. particularly stress corrosion. The " chemistry control" provision uns deleted fHur paragraph IL1220 in the 1977 Edition of l , Su: tion II because practical evaluation. reviam and acceptance standards could " not be defined..s SistTarty, itis our positiom that water chemistry control to .... minimize stress corrosion described in peregraph IL1220(c) of Section XI. <r ig74 Edition is not as acceptable basis for exempting ECCS components from ~ l 1 faservice esaminaties. Paragrapht,IL122D(b) of Sectica II. %=m==e 1978 ..: W@ Wa=da. does est possit the esemption:from'esamination of campa==ats in t 7 9er below 200*FRStellarly.ftt 1s"eur: position that low operating pressure vand temperatureffr;est aracceptable basis for esmopting ECCS and lusts camponents from inservice;asesiaation.p:dO ?.7.h S. . :yyygggg eqq pp. 2. y - T*' provide suf& ace'to La Salle before the preservice examination is completed and before the Isrprogram is suturitted, our position regarding paragraph IWC-1220(c) uns discussed is telephone conversations on July 12. 1979 and July 24, 1973 hetween representatives of Commoarealth Edison, the Project A c.._. o.. m N.;,.s3.,u g a 4.m c.a . -.w> 3 P % 10 tr)[i mu T3 F a y W R ]Ju h a h.)M 2 N DON

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