ML17252B534

LER 80-049/03L-0 for Dresden, Unit 2 Re at Completion of Secondary Containment Leak Rate Test the Reactor Building Ventilation Isolation Valve 2A-5742 Would Not Open

ML17252B534
Person / Time
Site:	Dresden
Issue date:	01/23/1981
From:	Scott D J Commonwealth Edison Co
To:	Keppler J G NRC/RGN-III
References
DJS LTR 81-72 LER 80-049/03L-0
Download: ML17252B534 (3)

Text

-*

B ti-'*' j Commonwealt...,ison Dresden Nuclear Po.Station . R.R. #1 Morris, Illinois 60450 Telephone 815/942-2920 ,,_.,_. *---.:._, January 23, 1981 DJS LTR #81-72 James G. Keppler, Regional Director Directorate of Regulatory Operations

-Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 Reportable Occurrence Report Docket #050-237 is beinky submitted to your office in accordance with Dresden Nuclear Power Station Technical Specification 6.6.B.2.(b), conditions leading to operation in a permitted by a limiting.condition for operation or plant shutdown required by a limiting condition for operation.

DJS/lg Enclosure D JJ/uJU D.

Station Superintendent DFesden Nuclear Power Station cc: Director 6£ Inspection

& Enforcement Director of Management Information

& Program Control U.S. NRC, Document Mgt. Branch File/NRC ti; ::;**, ..l:.J

__,,. ::;-\*:

1_. ' 'l?

z: co.,*-"-*

' c:::::-

c=., ..

":ill* I :011 ti';'.: 0<..( at._>: Chj::c-: C:l *;;:.-: :.:::i;:)

i,:i) L* ... _l,':' * ."1 C'.l '

I* !":.:: ... !-'-'** q), ,,* (5. *-.. ..,,_ ;Joo ?J. S ;It

.. * .... *!* 80 .. NRC. USE ONLY I' ,. 11* I r r I ,. I . 68.-69>. . a1.5:.;..942"'"2920--.s4a.

.. _;...,

. ; ..... t c 'f

.* T

• . _* . . :t

• :: :;*:/;:;?::, ( .. -...*.,* .. :.;* :' -:,,. __ . * * *" * * *' *.. OCCURRED:

• -... " , ... --:--:-,.

'.

• . * ,* r . .x *. SYSJ'EMrAFFECTED!

5750.. Pt.ANT.*CONDITIONS; . * * ** TESTING**

-/

• * * . ros*2, .. * * * *** *

• ... * :D .CRIPTI N:Of'*EVENl

• .. " ... ._,.*-*"*** . _-... ..: .";'* ..... , ._ .,_. _ * :* *: .. * . . .........

• • ," ... <. * .. :*,;: :,c"* .. ,;.;,:. :; .

• Upon: .* completion*

of' DTS' *1600-22:*. "Secondary:;

Containment . Leak: Rate: Test*,: "'the: reactor.

.. '" >.* '\ c

'. :.y:** , :>.: : .DESCRIPTION.

OF* CAUSE*

)

.. :-,"'::. _: ,.;** -: ... **: _ .. '; ,.'.-:" .. :

• . :<*.,'

• '. <:;;,'1

'. .... suspect excess" leakage' in< directi'onar control valve"> wh.kh' preyented-opepipg air signal 'and*' '."":'f,;';'

.*kept

.. on.-the .. vaiveiL-'

• .. *>-/.::/::. . ... ,; *'-_, * :** -*--* .*.. . . .. , -*.. ..

OTHER: APPLICABLE.

• :-Failed in" safe (c'losed) conc;lition

• . '. : *-.\. . . --.... . * . . -* ' . ..-.. :-.--.-.:.,, * * .. , ** * --'* * .... .,. . . SAFETY-, .. :** , * ***. * -iYPE: oF::

EVENi* oF PaTEN.TtiAc.>

T.Eo+:*.SPEc.*

• NON""REPORTABLE" ** ANNUAL****.

• • . RELATEo* -_:-: ;Ij **,*REPORTABLE::

OCCURRENCE.

• *; PU.BL IC INTEREST:>.

• V.I 01:.ATJON.'.-

j. OCCURRENCE: . REPORT! NG'< *wR: __ I SSUEQ:.:.

_ _. 1

• 8-:: ::: g,

* * . ;

• * * * * * 'o ** : 7;* , Y!S. >

• l

.. :-.':.*.-.*_J

..

.;: *.

f FI CAT.I ON

' . TIM:-*l A.>tXA

• . . --,_**\ :-.<, (*.: * * .*

NO:r_I nC..r1 ON,* * '. ;;: ".> . .':\. '. ...

NOT I. Fr CAT I ON* . DATE Tl ME . ' '.j _*; o* . ' ****. 'c'.'.. *':* . " ., ... ,' .... *.

' ' -. *-. :*;__ Y/6/Bl ...

-;1 Cj. .. .: ** :**,__ _______ _.._ -:J -. . * ... REGION ... U.I>

• . . .. Tl-TLE': *T ...

REGION. I 1 1.: ! . DOL:, ,. __ CATE:' . ". ' . . .. **

• • • .. .-"* .i .'*j . RESPONSIBLE COMPANY OFFICER* INFORMED OF IOCFR21

• 1 CONDITIONS.

ANQ THErR' REPORT ro* NRC Tl TLE * :J .. REVI EYi:*ANO:

COMPLETED John-W. Wujdga * . . .IL/31 l80 -') I

• OPERATING ENGINEER DATE. DATE,. DATE. TIML ----DATE. , -""t""I "M ... f-"* TIME.

.. *1 .. * "&<.*. ACCEPTANCE sy*_ STATION. R.EVI Ew.*. d> :*:,;*1*** " -AS** REOU I RED . *'* _ .... **. . . . I DATE. _ _,.-+.o.++.-;;;."---

1

/f / IQAfE-. ,-10*77" !'ORM-:

"_ , . , .-, , * .

• _ * --. _ . ,'.!

..

"""'. (;;r

.. ,!"."'1!:.<

..