ML17252A240

Letter Submitting Reportable Occurrence Number 050-249/1976-19 in Accordance with Technical Specifications, Section 6.6.B

ML17252A240
Person / Time
Site:	Dresden
Issue date:	10/21/1976
From:	Stephenson B Commonwealth Edison Co
To:	James Keppler NRC/RGN-III
References
BBS Ltr. #76-747
Download: ML17252A240 (3)

Text

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,,.Common.h EdisQ..n J Dresden NuClear Power Station

-" R.R. #1 .j,,.,

Morris, Illinois 60450 Telephone 815/942-2920 Mail Section Docket Clerk Mr. JamesG. Keppler, Regional Director Directorate of Regulatory Operations - Regiori III U~ S. Nuclear Regulatory Commission 799 Roosevelt Road I.'*'

Glen!Ellyn, Illinois 60137 Enclosed please find Reportable Occurren_ce report number 50"'.'"249/1976-19.

This report is being submitted to your office-in accordance with th_e Dresden -

Nuclear Power Station Technical Specifications,. Section 6.6.B.

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~. ~: Stephen~on _-_-

• Station Superintendent Dresden Nuclear Power Station BBS:jo_

Enclosure_

cc: Director of Inspection& Enforcement Director of Management. Information & Program Control File/NRC 10869

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coNTRoL sLocK:l LICENSEE 1

• ~

LICENSEE EVENT REPORT

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• r I 5*L .

• . t.r LEAse PRINT ALL REQUIRED 1NFoRMAr10N 1 LICENSE EVENT NAME LICENSE NUMBER TYPE TYPE

@E]II 7 8 9 ILIDI RIS 131 14 IOIOl~10101010101~10101 15 . . . *. 25 IJfl 11111111 10131 26 30 31 32 REPORT REPORT CATEGORY TYPE. SOURCE DOCKET NUMBER EVENT DATE REPORT DATE

@DJ CON'T I I I lbJ LbJ 101s101-1012141q1 101<11111171c, I 11 I 0 I :l I I 1710 I 7 B 57 5B 59 60 . 61 6B 69 . 74 75 BO .

EVENT DESCRIPTION

@lg] I AT 8 PPRO)(/MATELY 1930 HOURS ON 9 /l1 /7c,) THE 13"R£AK£R§ RCTW££.A/ I 7 B 9 r '

• 80

@@) I Bus. 34 AND 34-/ W£RE *0P£)J6D B>R BR.£Ak..R IN~PECTIOAI. IH UN1T-3 I 7 B 9 . 80 lti141 I Dll~SEL 7 .B 9. . .

GE.f\/CR..ATDR.. WAS USED To SUE'PJ...y BUS 34-t DuR.1J1JG- TH£ GR.EAt<CR I

80

~ I OUIAG-E, WHICH WAS CL.EARED Al ABOUT 1940 HOVR.~. IN OR.C.R. /0 ALJ...OW (H~ I 7 B 9 BO lfilID 1£NG-JN£ 'To. WARYY!. UP UJy'Y!Pl£TtELy THE ])1£S~L G-E.NER.ATo R,. WAS NOT I 7 B 9. . ~E (SE:C: lri'rnc.1-JE.D SHa:i)Bo SYSTEM CAUSE COMPONENT COMPONENT CODE CODE COMPONENT CODE SUPPLIER MANUFACTURER VlOl.ATION 7

@El 1£1£1 B 9 10 LE.J 11 IEINIGI tJNl£1 12 17 L.~J 43 44 IWl:Olq 111

.* 47 LN.I 48 CAUSE DESCRIPTION lolBI8 9l*IHS ENCr1N£ HIGH TEfY/Pt;.RAIURE COND1Ttof'J wAS IH£ RESULI oF A PARllALJ...Y I 7 .' . .. . . .. . . 80 .*

lol9l .1 CJ./)C.GED

• SIR..fl1NER iN THE.LUBE OtL C.fRCULAT1NG- purvip,. {H/5

• RESTR.1 CTED r.

7 8 9 . . . .. *. .** .. . . 80 IT@J. I OIJ.. FJ...ow SUFF1C1ENTLY lo cAusE A ~1G-NtF1cANT R1s£ 1N 011,_ 1£.MP.E.RA!uRE. I 1,*0'*9 * * * (~E.'117..fl-iC,1-riii>'*~sHEET) ***00

• . ",FACILITY MpHOO OF ** - .. *,

~'STATUS  % POWER OTHER. STATUS DISCOVERY DISCOVERY DESCRIPTION.

EEJ . 9lliJ.

7 .* 8 I0 I 0 I 0 I I 10 12 13 NA 44 llLl 45 46

" . 80 FORM OF ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE *

[!E) lZJ ~ .._I--~N"'-'-ff_ _,.--..lf 7 8 9 10 11 44 . 45 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION

~ 1010101 gj 12 13 JJA 7 8 9 . 11 80 PERS.ONNEL INJURIES NUMBER DESCRIPTION*

[ilil IOjo jo I .. JvA 7 8 9 11 12 80 OFFSITE CONSEQUENCES

[lfil NA 7 8 9 80 LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION EJfilB 91.ZJ 7 10 N 11 80 PUBLICITY *

(ill] /VA:

7 8 9 80 ADDITIONAL FACTORS E@ ..NA 7 8 9 80

[I@)B, 9*!-------------------------------------,.-'

7 80 NAME:_l<_;;._1_.;;c_H_11_12.~v__fVl_1_R.,....o_GH_N_li'-------- PHONE: ExT. .. J. bs GPO 881 *.857

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EVENT DESCRIPTION (Continued)

"shut down following the return to service of bus 34-1. At approximately 2020 hours0.0234 days <br />0.561 hours <br />0.00334 weeks <br />7.6861e-4 months <br />; the engine high temperature alarm was received, and the diesel generator was manually shut; down. The Unit 2/3 diesel generator was available and operable.

(50-249/1976-19)

CAUSE DESCRIPTION (Continued)

The strainer was cleaned, and t'he diesel. generator was operated successfully for approximately 40 minutes. To prevent recurrence, the lube oil circulating pump strainer will be cleaned.as part of the diesel generator annual inspection pro'c~dure. This* is not. a repetitive occurrence.