ML20040A052

LER 81-075/03L-0:on 811215,during Normal Startup, Surveillance Interval Limit for Reactor Coolant Sample Was Exceeded.Caused by Miscalculation by Technician.Technician Reminded to Double Check Calculations

ML20040A052
Person / Time
Site:	Dresden
Issue date:	01/11/1982
From:	Rowley E COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20040A046	List: ML20040A045 ML20040A052
References
LER-81-075-03L, LER-81-75-3L, NUDOCS 8201200265
Download: ML20040A052 (2)

Text

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• LICENSEE EVENT REPORT CONTflOL BLOCK: l 1

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si ooCKET NUMSER 68 09 EVENT oATE 74 75 REPORT oATE 80 EVENT DEScalPTION AND PROS ABLE CONSEQUENCES h

,oj2; lDuring a normal start up, a technician miscalculated the sampling time to obtain a reac-l gg tor coolant sample for the next shift. This caused the surveillance interval limit to g

,,,,, ,be exceeded (Tech. Spec. 4.6.C.2). There was minimal safety significance because the  ;

, , , allowable interval was only exceeded by 6 minutes and all samples were found to be with g

,in radiological limits. The event had no effect upon public health or safety. Previous,

, g similar occurrence reported by R.O. #81-60/03L-0. g 1 o 181 l I 7 s9 s0 SoTE *^"oY co suCEE CouPoNENT coof sueYoE sSEE

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42 l2lh l2l9l9l9Ih 42 44 47 i CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h ITTTl iThis event was caused by a miscalculation by a Rad-Chem Technician as to when the next l

, i  ; sample was to be taken. The technician involved was reminded to double check his calcu-l

, 7 glations. No further actions were deemed necessary at this time. l mi I I i 14_i l I 7 a 9 80

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t 5 (,gjh l 0l 3 l 3 lhl N/A l d h Observation by Rad-Chem Technician l AbvtTY Co TENT r.ELEAst PRELEAsE Amount oP AcTiviTv h Location oP RELEASE h m LZ_.]

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, SS $9 80 3 8201200265 820111 Ed Rowley psong. 815-46 9 999n _ Y-sn E

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DEVIATION REPORT Commonwe:lth Edison 3 gy, , , ,

• \ / ST A 12 UN I T 2 YE A61 NQ,35 PART 1l TITLE OF CEVI ATION OCCURRED Failure to Satisfy Sampling 12-15-81 0150 Frequency Requirements During Reactor Startup c 77 ,,,

SYSTEM AFFECTEo 3350 PLANT STATUS AT TIME OF EVENT TESTING Racetor Coolant uoOE Run , p.Rtu.Ti 250 , to ocuAE3 - - -

y 0 g ddri"n'ga "starEufof Unit 2 Reactor Coolant Samples were being taken every 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> as re-quired by Tech. Specs. This was done correctly through 2050 on December 14, 1981. The next etmple was then taken 5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> later at 0150 on December 15, 1981. This in itself is no vio-lation but combined with an earlier sample taken at 1244 on December 14, 1981, exceeds the limit of 3.25 X 4 hrs. = 13 hrs. between three samples by 6 minutes. This was due to a mis-calculation of sample time by a technician for the next shift. This was not checked by the oncoming technician.

10 CFR50.72 NRC RED PHONE O 0 NoTiricAtioN MADE YES NO EQUIPMENT F 41 LURE Oves B No .oR< REcutsT ~o. REspoNsistE suRERvisoR Joseph Sirovy eaYE 12-16-81 PART 2 l 0PERATING ENGINEER'S COMMENTS All reactor water sample results were within limits.

O EVENT or PueLiC iNTEaEST O 24 oua Nac NotiricAfios aEo o Mike Jordan (courtesy) 12-15-81 0800 0 TECH. SPEC. violation TELEPH REGION 111 OATE TIME O NoN aEPoaTABLE occuaRENcE TEtEC,,TEtECo,y 0 'A oAv aEPoaTABLE/T.S. aEsioN iii oATE TIME

@ 30 DAY REPORTABLE /T.S.6.6.B. 2.c 0 ANNUAL /SPEct REPORT REa.o 0 IF ABOVE NOTIFICATION IS PER 10CFR2t A.I.p,

• O s oAv RiTTEN aEPoRT aEo o PER iocrR2i L.E.n. n 81-75/03L-0 TELEPH F. A. Palmer U-U-M MM CECO CORPORATE OFFICER DATE TIME PRELIMIP ARY REPORT COMPLETED AND REVIE*ED John M. Almer 12-16-81 OPERA rt NG ENGINEE R A A TE E E Y TT0 V d, ) md /

U i M r 1-- , 7 JahG RESOLUTION APPROVED AND AUTHORIZED FOR DISTRIBUTION -

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