ML17173A414

Forwards LER#78-061/03L-0

ML17173A414
Person / Time
Site:	Dresden
Issue date:	12/08/1978
From:	Stephenson B COMMONWEALTH EDISON CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17173A415	List: ML17173A414 ML20027A528
References
NUDOCS 7812150270
Download: ML17173A414 (2)

Text

u Commonwealth Edison Dresden Nuclear Power Station R.R. #1 Morris, Illinois 60450 Telephone 815/942-2920 December 8, 1978 BBS Ltr. 078-1588 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 /178-061/03L-O, Docket 11050-237 is hereby

• submitted to your office in acc'ordanc-e with- Dresden Nuclear Power Station Technical Specification 6.6.B.2.(b), conditions leading to operation in a degraded mode permitted by a limiting condition for operation or plant shutdown required by a limiting condition for operation.

BBS/deb Enclosure cc: Director of Inspection & Enforcement Director of Management Information & Program Control File/NRC

-REGULATORY DOCJ{ET FJ~_[ COPY

wl°T"l-*. *- U. S. *LEAR REGULATORY COMMISSl.ON

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.1CENSEE EVENT REPORT CONTROL BLOCK:~'~...__._~.___._~.._~1<2) (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 0 i1* l1!B It 9 ILLICENSEE In IR Is CODE 12 101 al al 14 15

-I al_al al al al LICENSE NUMBER

-I al al014 11 111 11 1101 25 26 . LICENSE TYPE JO I 1© 57 CAT 5B ~----

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- B 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT OATE BO EVENT DESCRIPTION AND. PROBABLE CONSEQUENCES@

' I 2 I !During normal unit operation, A0-2-1601-24 failed to close when its control switch r 131 !was placed in the "close" position following containment venting. Upstream valves c I4 l I A0-2-1601-60, -61, -62 & -23 were operable and were closed to maintain containment *I

• I ;: 1s I I integrity. AQ-2,...1601-:-24 was closed 25 min later by disconnecting an air line. This

.. _,. ___.b6~-l Iis. the .. firSL.Jlecurrence o.( this tyPe. *

Ia I 8 9 80 SYSTEM CAUSE CAUSE COMP. VALVE J.

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SEQUENTIAL OCCURRENCE REPORT REVISION

~ i:~RiRO LVENT YEJ>.R REPORT:No. *. CODE " TYPE:-* NO.

\!:/ REPORT NUMBER I 7I 8I I I I 01611[ I/I lol3I ,~ 1=J L2J 21 22 23 24 26 27 2B 29 30 31 32 ACTION FUTURE EFFECT SHUTDOWN.. r.;:::.. ATTACHMENT NPRD-4 PRIME COMP. COMPONENT TAKEN ACTION ON PLANT METHOD HOURS ~ . SUBMITTED FORM ::;uB. SUPPLIER MANUFACTURER l.£J@Ll1@

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35 L!J 36 I

37 01 01 a1 01 40

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41 W@)

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44 . 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS @

Io I I Valye AQ:-.2:::J6Q-k-2~.' s _a_i~ _o_Q_~rator -solenoid .-valve stuck in the "open" position dl!le to t-------1-+-I I an accummul.a.t.i.O_~,.~~-"'..dirt. in. the valv~ $nt~rna.1s-. The solenoid valve was replaced

.!. 1 2 1 I and A0-2-1601-24 test:ed for proper operation prior to returning to service. Due to

~*'-3~1 I the singular~ature of this event, no additional action is planned.

14 I 8 9 BO FACILITY

• f:jQ\ METHOD OF (.;:;\

STATUS  % ?OWER OTHER STATUS \:::;J. DISCOVERY "OISCOVERY DESCRIPTION '2_3;

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<l RELE,>.SED CF RELEASE 9 10 11

_NA AMOUNT OF ACTIVITY 44 45 .*

NA LOCATt'ON OF RELEASE@

80 PERSONNEL EXPOS\JRES .. _ (.;;;\*

NLJ1,1BER A TYPE DESCRIPTION

TI 8 I9 0 I a .I aJ0~@

11 12

- NA 1~3~--~-=~---~-~--~--~~-~--~---~-~--~--~--~---~----'80 PERSO~lNEL l:llJURIES C.'\ *-*'" ..

NU~**BER DESCRIPTION~ .

. =rJB I9 o I o I a11l@L 12 NA

--~---~----~-~~-~-~-~-~~---'-~-~~--~----'--~~-~~BO LO!:S OF on D-"\lAGE TO FACILITY TYPE DE'.;.::RIPTIO~J 143'

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NAME OF PREPARER ... * ......__ _ P_a_r_c_e_l_l___________ PHONE: ______2_6_5_____~....---- ,,

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