ML17252A239

Letter Submitting Reportable Occurrence Number 050-249/1976-20 in Accordance with Technical Specifications, Section 6.6.B

ML17252A239
Person / Time
Site:	Dresden
Issue date:	10/22/1976
From:	Stephenson B Commonwealth Edison Co
To:	James Keppler NRC/RGN-III
References
BBS Ltr. #76-750
Download: ML17252A239 (3)

Text

• Commonw9h Edison Dresden t:Juclear Power Station R.R. #1 Morris, Illinois 60450 Telephone 815/942-2920.

BBS Ltr. 1176-750 October 22, 1976 Mr. James G~ Keppler, Regional Director Directorate of Regulatory Operations - Region III U. S. Nuclear.Regulatory Commission ~

799 Roosevelt Road .

.*,,, !JCLfARRfGULATORJ COMMISSION Glen ~llyn, Illinois 6013 7 '  :~

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Enclosed please find Reportable Occurrence report number 50-

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This report is being submitt.ed to your office in accordance with the Dresden Nuclear Power Station Technical Specifications, Section 6.6.:B. *

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B. if: Stephef1'son Station .Superintendent Dresden Nuclear Power Station

• Enclosure cc: Director. of Inspection & Enforcement Director of Management Information & Program Control .**

File/NRC J.~,..;1 r:-,.. -**,.,"

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.LICENSEE EVENT REPOR.

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• I I . (PLEASE PRINT ALL REQUIRED INF(>RMATIONJ 1 6 LICENSEE LICENSE EVENT l NAME LICENSE NUMBER TYPE

• TYPE

@E] IIILIPl~ISl31 10101-10101010101-10101 l.lfltl111111 10131 7 8 9 .14_ - 15 .... 25. 26 - : . 30'. 31

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REPORT REPORT i CATEGORY TYPE- SOURCE OOCKE;T NUMBER EVENT CATE REPORT DATE i

7

@El CON"T I I I 8 57 58 LbJ lhJ

. 59 60 101s101-101~1~191 61 68 Io 69 1'1- 1.211-17 I~74I 11101~ur-11101 75 . 80

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EVENT DESCRIPTION . .

(0(2) I DURING- REFUELING- OUTAGE l-OCA4 lEAK~J(ATE: TESTING- 1 THt:: VOJ.JJfY1£ 'BOUNDE,pl 7 8 9 . . . . 80 101318 9l'BY 7

iYIAIN SIEArYI LINE: DRAIN VALVE:£ 3-J.:2.0-:-1 AND

-:t- B<.HIB!TED A J...EAK RATE

. 80 I

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lol418 9loE 7

33.5 SCEH trEcH SPEC LIMIT: ;t.9.3'll- SCFH\ :Mos1 OF THIS. lt:AKA&E

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80 I

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@m-1-wAs osvrousi...y TH£ R£SULT OP A VA/...Vt~ BoDy...;.Tb - BONNET *LEAK oN 7 8 9 * * .* i . * . . . . '

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i~ " - lol61 13<~~0 -*t, TJ./E INBOARD VAJ-VE-, BECAUSE IHI S VALVE JS. LOCATED I rJSt DE: TI-IE I 7 8 9 . . .* . PRIME (SEE. ATTACH£/;) S H--EETJ - 80 SYSTEM - CAUSE COMPONENT COMPONENT CODE CODE COMPONENT CODE . SUPPLIER MANUFACTURER VIOLATION 7

@El ICl'CI ~

8 9 10 . 11 12 IVIAILIVl£1XI 17 lAJ 43 IClblblSI

44. . 47 LtJ 48

. CAUSE DESCRIPTION NA

@]fil ll}ECALJSE o'F V£SS£.L L£VE.L C..ONSID£.RATIONS' 1)i$ASSE.M8l'/ .AND REPAIR OF I 7 8 9 80 -

lolsl8 9I VAl...V& .* 3- llO-J ..

7 HA s . NOT '(ET BE:EN *-PER.FoRmED * .THE LEAi<.

• is BE: bl EYED *

- . . .. . 80.

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l (!:@l.ITo BE: *THE R£Su~T OF A DET£R10RATED 'PRESSURE SEAJ.. RING .E£.TWEEM .THE ... I L *

• 7. 8 9 . . . ' (SE£. t\TfA-~t1tv"'..s~1-E"l:".1/ ,-~so t * *.*. . .~: ~~~i~~  % POWER OTHER STATUS *-~~J~g~~R~ 0152a~ERY* DESCA;P~ION "' ,... ,.,_ -

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7 1010 I 0112 - 13 10 NA 44 I tru 45 46:

NA 80

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  .* FORM.OF ACTIVITY CONTENT

.. rn *- 7 8 RELEASED 9

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OF RELEASE lkJ 10

.._I 11 AMOUNT OF ACTIVITY

.;....._......,,..-__.;;:*N_.;._11._,:,...__ ___,I44 . 45 I

LOCATION OF RELEASE

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BO PERSONNEL EXPOSURES I' NUMBER TYPE DESCRIPTION

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• 7lilll.8 9I010101

. 11 lZJ 12 13 NA 80 PERS'ONNEL *1NJURIES NUMBER OESCRIPTION

. [El IO I 01.01 NA 7 8 9 11 12 80 t *. .*. [Th] OFFSITE CONSEQUENCES

.NA

• • • • . 7 B 9 80

.* .... *. LOSS

• OR DAMAGE TO . FACILITY TYPE DESCRIPTION

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-8 9 1ZJ 10 NA 80 PUBLICITY

• .[If?.] . NA r *** 1 0 9 80 ADDITIONAL FACTORS

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.. 7filfil8 9*"-'-----------------------------------------------------------------~~ 80 I. . .

NAME:-=E"""D_l.J.,;._;,_~..;..R.;;,.ap"--;;_;;;._;.=...*__.S""-'£-"-_c=-K~'-"'"""'G-"'-£_.-'R.'----,--------- PHONE: £x T, GPO 881, 11117

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EVENT DESCRIPTION (Continued) drywell, any leakage would have been contained within the primary containment.

This is the first reported leak-rate test failure for. these valves. (S0-249/1976-2*0)

CAUSE DESCRIPTION (Continued) valve b9dy and bonnet. An update report will be submitted after repairs .and retesti~g have been completed. Valve 3-220-1 is a 2-inch globe valve, model.

7852-U, *manufactured by the Crane Company. "

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