ML20069E535

RO 83-014:on 830219,contaminated Demineralized Water Released Into Condenser,Allowing 0.7 Mci to Steam Out of Vent.Caused by Personnel Error.Operator Opened Valve MO-3-1301-10 Instead of Valve MO-3-4399-74

ML20069E535
Person / Time
Site:	Dresden
Issue date:	03/15/1983
From:	Coyle L, Scott D COMMONWEALTH EDISON CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
10CFR-020.405A, 10CFR-20.405A, 83-283, RO-83-014, RO-83-14, NUDOCS 8303220093
Download: ML20069E535 (4)

Text

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'. Commonwzith Edison Drlsdin NucInr Powsr Station RR.#1 Morris, filinois 60450 Telephone 815/942-2920 March 15, 1983 DJS Ltr. #83-283 James G. Keppler, Regional Administrator Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 A copy of Deviation Report #12-3-83-14 is being submitted to your office in accordance with 10 CFR 20.405 to report an occurrence of levels of radiation or concentrations of radioactive material in a restricted area in excess of any other applicable limit in the license. This report describes the event and corrective actions being taken to prevent recu rren.ce .

Da D. J. Scott Station Superintendent Dresden Nuclear Power Station DJS/nh Enclosure cc/ Director of Inspection & Enforcement File /NRC 8303220093 830315 PDR ADOCK 05000249 MAR 17 1983 S PDR

S U PP LEME NTA L DVR l D I - I l ! 2 l - l 0 l 3 I - l 8 I 3 l -l 1 I 41 (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) lo l i 9l l3 I i 1.LICENSEE 7

l D i RCQoE l S ! 3i4l@l15Ol Ol- l O !OI Ol O J O I - l O! O l@l LICENSE NuMSER 25 X26 l XLICENSE I X l XTYPE l XJ0l@l57XCAT l X54I @

CCN'T lolil 3g,c; I X l@l X I X l X I X l X I X i X I X I@l 01211 l 9 I s I a l@l o l 311l518131@

7 3 60 61 ooCKET NUMSER 68 69 EVENT oATE 74 75 REPORT cATE 80 EVENT DESCRIPTION AND PROBA8LE CONSECUENCES h I o i 2 l lFollowing a spurious Reactor scram, the isolation condenser automatically initiated I l o 13 l Idue to a Group I isolation. The unit operator opened the 3-1301-10 valve which al- I Ioi4l l lowed contaminated demineralized water into the shell side of the isolation condenser l ioisl Ifor make-up. Approximately 22,400 gallons were added allowing 0.7 millicuries to I lo$6l l steam out the vent. Sa fe ty significance was minimal since the radioactive relence I

, ,was of a very low level and limited to within site boundary. No effect on public l ail health or safety. Previous similar occurrence reported by DVR 12-2-81-14. l S$I[E Cc"$E S8C$$E CouPoNENT CooE SU8 c'oE SU E lo191 I sl Bl g ;A ; g l Al g l Vl Aj Ll Vl Ej Xl g l Eg g lD l g 20 7 8 9 10 11 12 13 18 19

,_ SEQUENTIAL octuRRENCE REPORT REVISloN OVR EVENT YEAR REPoR1 No. CooE TYPE No.

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_,21 I8l3l 22 l-l 23 l 0 l 1l 4l 24 26 l/l 27 IXIXl 28 29 lXl 30

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31 lo I 32 TKN A o oP T ME HoORS S8 i FoA S. SU L MANUFAC RER lxl@lxi@ lzl@ l36z i@ l01010101 37 INI@ IXl@ lN l@ lC!6l6l5l@

33 34 35 40 el 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTICNS

,,,g, lCause of the event was personnel error. The unit operator opened the M0-3-1301-10  ;

, allowing contaminated water into the shell side of the isolation condenser instead I

,, , lof opening MO-3-4399-74 which allows clean demineralized water into the shell. The

, , , , , l activity in the isolation condenser was reduced by " feeding and bleeding" with clean j

, ,,,,l demineralized water. The contaminated area outside the Unit 3 Reactor Building was l 7 a , (over) 80

' SrA

^#' N,5 . power oTwER STATUS @ $iEoEv' oiScovERv oESCRIPTioN Ii 15 l d@ l 0 l 0 l 5 l@l" N/A l [ Aj@l Operator Observation l A$TiviTv Co'0 TENT

_. PELEASEo onRELEASE LOCATION or RELEASE h li ls ] l M] @ l M lgl .7AMouNTor millicuries ACTiviry @ l l Isolation Condenser Vent to Atmosphere l 7 8 3 to 44 45 80 PERSONNEL EXPOSURES Nuv8ER TYPE oESCRIPTioN

• l 1 l 7 l l 0l 0 l 0 l@l zj@l N/A l PERSo~~E t iN;u'J,ES NuveER li j a l l 0l 0l 0l@loESCRiPfioN@ N /A l 7 4 9 11 12 30 LOSS of oR c AMAGE To FActLITY TYPE oESCRIPTIoN Ii 19l l zl@lto N/A l 7 a 3 30 PUBLICITY ISSUED oESCRIPTtoN 12101 1 Nl dd l N/A I 7 8 3 10 0 Lawrence Covle '

815-942-2920, X-526 NAME CF PREDARER PHONE.

/n -

s DEVIATION REPORT f

\

n j--)} Commonwealth Edison v DvR NO. 12 -

STA 3

UNIT

- S3 YEAR 14 NO.

PART 1 l TITLE OF DEVI ATION OCCURRED 2/19/83 1730 Opened 3-1301-10 Valve on Iso Condenser oAre T've SYSTEM AFFECTED 1300 PLANT STATUS AT TIME OF EVENT TESTING Isolation Condenser yong Refuel , PwR(MwT) 130 . LOAD (MWE) 0 vS OiWi*n[a"s0IirYoUsReactorscramonU-3,theisolationcondensorinitiatedautomatically due to a GRI initiation. When the isolation condenser Low Level alarm annunciated, the NSO opened the 3-1301-10 valve to make up the shell side of the isolation condenser. This valve allowed contaminated demineralized water into the condenser. Approximately 22,400- gallons was added allowing .7 millicuries to steam out the vent. This release was discovered at 2130 and Red Phone call made at 2200.

10 CFR50.72 NRC RED PHONE 8 O NOTIFICATION MADE YES NO EQUIPMENT FAILURE N/A OVES G No .ORx RE0uEST NO. RESPONSi8tE SUPERVISOR Gary L. Smith Dart 2/19/83 P ART 2 l 0PERATING ENGINEER'S C0hWENTS The activity in the shell side water of the isolation condenser will be reduced to below acceptable limits by " feeding-and-bleeding" with clean demin. water. Also, the contaminated areas outside of Unit 3 Reactor Building have been roped off and decontamination started.

O EVENT OF PUBLIC INTEREST 2 4-HOUR NRC NOTI F I CATI ON RE0' D TELEPH /A 0 TECH. SPEC. VIOLATION

@ NON REPORTABLE OCCURRENCE TELEGM/TELECOPY j 14 DAY REPO R T ABLE/ T. S. REGION 118 DATE TIME O 30 DAY REPORTA8LE/T.S. CECO CORPORATE NOTIFICATION MADE IF ABOVE NOTIFICATION l$ PER IOCFR21

, @ ANNUAL / P CL REPORT RE0'D 10CFR 20.405 A.I.R.

• 5-DAY WRITTEN REPORT RE0'D PER 10CFR21 Telecopy i L.E.R.

• Dennis P. Galle 2/22/83 1127 l M i

CECO CORPORATE OFFICER DATE TIME l

l PRELIMINARY REPORT T. Ciesla 2/21/83 COMPLETED AND REVIE*ED OPERATING ENGINEER DATE E E BY STAT ON RE W . N- e/a ele

U 3I i,5) 83 2//f/93 RESOLUTION APPROVED AND AUTHORI ZED FOR DI STRI BUTION ,

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66.$t76 (FORu 15=Stati 10 81

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