ML20024A528

LER 83-019/03L-0:on 830521,MSIV 203-1B Found W/Closure Time of 2.7 Exceeding Tech Spec Limit of 3 to 5 S.Caused by Misadjustment to Timing Mechanism on MSIV-203-1B.MSIV Adjusted within Tech Spec limits.W/830608 Ltr

ML20024A528
Person / Time
Site:	Dresden
Issue date:	06/01/1983
From:	Maxwell D COMMONWEALTH EDISON CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
83-564, LER-83-019-03L-01, LER-83-19-3L-1, NUDOCS 8306170409
Download: ML20024A528 (3)

Text

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' ART I l 7 TLE # OEVI AT'CN OC;gnogg Fast Closure Time of Inboard MSIV 5/21/83 0030

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EsCRuPil0N OF EsENT While oerfornine DOS 250-2 cuarteriv MSIV valve timing, valve closure time of 2.7 seconds was found for MSIV 203-1B. (Limit is 3 to 5 seconds).

Valve was placed in the closed position. Drywell was de-inerted and entered.

203-1B was adjusted. Closure time was 4 seconds.

10 CFR$0.72 NRC RED Pw0NE ]

NOTIFICATION MADE YES *O EOUIPMENT FAILURE N/A O<Es NO .Ca< REcuEST NO. RESP 0NsistE sLPE=vis0R Thomas Mohr 5/21/83

., , 7 c Pant 2 l CPERATING ENGINEER'S COMMENTS Once the MSIV time was determined to be out-of-spec., the valve was placed in the closed position until the drywell was de-inerted and adjustments could be made.

EVENT OF PUBLIC INTEREST 24-HOUR NRC NOTI FI CATI CN REJ'O C TECM. SPEC. VIOLATION TELEPH N/A REGICN III DATE TIVE NON REPORTABLE OCCURRENCE TELE CM/ TEL ECOPY N/A C 14 OAY REPORTABLE /T.S. REGION 111 OATE TIME 30 QAY REP ORTA BLE/ T. S .6. 6. B . 2 . b

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• CORPORATE NOTIFICATION MADE ANNUAL /SPECL REPORT RE0'O IF ABOVE NOTIFICATION IS PER !CLFR21 t A.I.R.

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• A1-14/01L-0 ecopy Dennis P. Galle 5/23/83 1512 g Ceco CORPORATE OFFICER DATE TIME PRELIMINARY REPORT COMPLETED AND REVIEwEO T.A. CieSla 5/23/83 QPERATING ENGINEER OATE 5, INVEITIGATED RE*0RT & RESOLUTION ACC.tETED SY, STATION REVIEN 4 *&h,T(L GNkl A 80 (S eN]n ~lYlF3 l RESOLUTION AP* ROVED AND j AUTHORI ZED FOR 0 t STRICUTION y h 9 [3 44 5176 !FOsw gg.5tatt IC+81 rj i

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,'. Common =lth Edison Dr:sden NuclIar PowIr StItion RA #1 Morris, Illinois 60450 Telephone 815/942-2920 June 8, 1983 DJS Ltr #83-564 James G. Keppler, Regional Administrator Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 Reportable Occurrence Report #83-19/03L-0, Docket #050-249 is being submitted to your office in accordance with Dresden Nuclear Power Station Technical Specification 6.6.B.2.(b), conditions leading to operation in a degraded mode permitted by a limiting condition for operation or plant shutdown required by a limiting condition for operation.

M D. . Scott Staticn Superintendent Dresden Nuclear Power Station DJS/kjl Enclosure cc: Director of Inspection & Enforcement Director of Mancgement Information 6 Program Control U.S. NRC, Document Management Branch File /NRC JUNyg p

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