ML17252B534

LER 80-049/03L-0 for Dresden, Unit 2 Re at Completion of Secondary Containment Leak Rate Test the Reactor Building Ventilation Isolation Valve 2A-5742 Would Not Open

ML17252B534
Person / Time
Site:	Dresden
Issue date:	01/23/1981
From:	Scott D J Commonwealth Edison Co
To:	Keppler J G NRC/RGN-III
References
DJS LTR 81-72 LER 80-049/03L-0
Download: ML17252B534 (3)

Text

-* B ti-'*' j Commonwealt...,ison Dresden Nuclear Po.Station . R.R. #1 Morris, Illinois 60450 Telephone 815/942-2920 ,,_.,_. *---.:._, January 23, 1981 DJS LTR #81-72 James G. Keppler, Regional Director Directorate of Regulatory Operations -Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 Reportable Occurrence Report Docket #050-237 is beinky submitted to your office in accordance with Dresden Nuclear Power Station Technical Specification 6.6.B.2.(b), conditions leading to operation in a permitted by a limiting.condition for operation or plant shutdown required by a limiting condition for operation. DJS/lg Enclosure D JJ/uJU D. Station Superintendent DFesden Nuclear Power Station cc: Director 6£ Inspection & Enforcement Director of Management Information & Program Control U.S. NRC, Document Mgt. Branch File/NRC ti; ::;**, ..l:.J __,,. ::;-\*: :;::1_. ' 'l?:z: co.,*-"-* ' c:::::-c=., .. ":ill* I :011 ti';'.: 0<..( at._>: Chj::c-: C:l *;;:.-: :.:::i;:) i,:i) L* ... _l,':' * ."1 C'.l ' I* !":.:: ... !-'-'** q), ,,* (5. *-.. ..,,_ ;Joo ?J. S ;It

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• Upon: .* completion* of' DTS' *1600-22:*. "Secondary:; Containment . Leak: Rate: Test*,: "'the: reactor. .. '" >.* '\ c '. :.y:** , :>.: : .DESCRIPTION. OF* CAUSE* :) .. :-,"'::. _: ,.;** -: ... **: _ .. '; ,.'.-:" .. : ;* :. :<*.,' * '. <:;;,'1 '. .... suspect excess" leakage' in< directi'onar control valve"> wh.kh' preyented-opepipg air signal 'and*' '."":'f,;';' .*kept .. on.-the .. vaiveiL-' * .. *>-/.::/::. . ... ,; *'-_, * :** -*--* .*.. . . .. , -*.. .. OTHER: APPLICABLE. * :-Failed in" safe (c'losed) conc;lition *. '. : *-.\. . . --.... . * . . -* ' . ..-.. :-.--.-.:.,, * * .. , ** * --'* * .... .,. . . SAFETY-, .. :** , * ***. * -iYPE: oF:: EVENi* oF PaTEN.TtiAc.> T.Eo+:*.SPEc.*

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• 1 CONDITIONS. ANQ THErR' REPORT ro* NRC Tl TLE * :J .. REVI EYi:*ANO: COMPLETED John-W. Wujdga * . . .IL/31 l80 -') I

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