05000237/LER-1978-054, Forwards LER 78-054/03L-0

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Forwards LER 78-054/03L-0
ML17173A323
Person / Time
Site: Dresden Constellation icon.png
Issue date: 10/24/1978
From: Stephenson B
COMMONWEALTH EDISON CO.
To: James Keppler
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17173A324 List:
References
78-1424, NUDOCS 7811030143
Download: ML17173A323 (2)
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LER-1978-054, Forwards LER 78-054/03L-0
Event date:
Report date:
2371978054R00 - NRC Website
v • d • e

text

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_I; Comm~alth Edison Dresden NZr Power Station R.R. #1 Morris, Illinois 60450 1:elephone 815/942-2920 October 24, 1978 BBS Ltr. #78~1424 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 /J78-054/03L-0, Docket //050-237 is hereby submitted to your office in acc.;ordance 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

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    • ~~f-::;---. (/
  • ~.*. :;;stepilens::m Station Superinterident-Dresden Nuclear Power Station cc:

Director of Inspection & Enforcement.

Director of* Management Information & Program Control File/NRG

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"*CONTROL 9 LOCK:. ~' -"-'--l----'l _ _..l _ _.___,[ C)

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  • o LICENSEE EVENT REPORT *

(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

~

Ir* I *11. nl RI sl z 101 o Io I ~I o Io Io Io Io I - Io Io IG)I 411 I 1 Ii I l IG)I I I G) 7 S

9 l..iCENSEE CODE 14 15 LICE:."IJSE NUMBER 25 26 UCEriSE TYPE JO 57 CAT 53 CON~T---

C2EJ a

~~~ L!JCD I o 1 s I o I o I o I 2 I 3 ! 1 101 o I 9 I 3 I o I GO 61 OOCKETi*JL'i.\\8ER 63 69 EVE'.HDATE 1 I s IG)l i I o I 2 I 4*-1.1 I s IG) 74 75*

REPORT DATE 80 EVENT DESCRIPTION ANO PROBABLE CONSEQUENCES@

I During normal steady state ooeration, the Torus Vacuum Relief Valve A0-1601-ZOB not closed alarm was received in the control room.

An immediate visual inspection

() !.; i verified the valve to be fully open.

Per T.S. 3.7.A.3.b.backuo vacuum brea=k=e=-r __

__,-1

.__1_6_0~1-_-_3_l_B_._w_a_s~s._e_c_u_r_e~d_._c_l_o_s_e_d_-_t_o~m_a_* _in~t_a_i_n___._p_r_i_m_a_ry~*_c_~ o_n_;_t_a_i_n_m_e_n_t~i_*n.......:...t_e~g_r_i_t~y_:~-Th~**i_*s_*_i~s~t_h_e~__.l.

first event of this tvpe;

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hC7!0:'-J F=UTUR£ T ~;:=;*J. /:.C."TiQ;-.1 SYsn:;_.1 cor,::

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CAUSE

CAUSE CODE.

SUBCODE*

COMPONENT CODE UJ@

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<l SEGUSNTIAL oc
:uR?.ENCE RE:?0i1 T 'W..

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SUB CODE LJJ@

g RE20RT TYP!:

L!:J JU VALVE SUBCODE LU@)

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I Jj REVISION NO.

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32 COl\\*1P0~1Ei'tT MANUF,:.:::up ER I A l(IB)l z l (°iJi i z !Gl). ~

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.;;,usE 'JESCRIPTION,<l.ND <:ORREC::l\\J'.'::.'".CllONS (~}

The A0-1601-ZOB-air ooerator solenoid 44

~7 valve (Type AU3) shorted resulting in a control circuit blown fuse.

The valve failed open as designed.

The solenoid and fuse were

. ~; i) 1 1 replaced and the valve verified operational *by _operability surveillance.

No additiona~

  • ,~3
  • ~ action is requ;i.red *since this is not a reoccurring e*vent.
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F;..C:LITY 91 STATUS

% POWER OTHER STATUS. x:J 30 DISCOVERY DISCOVERY DESCRIPTION 32

=rIJ LU@ I 0 I 9*1 3 l@.__l *_NA ____

METHOO-OF W@....

l_An~n..;..u...;;n..;..c;...i_a_t_o_r_A....;;;1..;..a.;;;..rm..;..* _________ ___.l-a

'J ACTIVITY 10 12 11 CONTENT

~

44 RELEASE!). OF RELEASE

>.MOUNT OF ACTIVITY ~
  • QI] LU@ Uj@._I _N_A_* ______

10 11

.14

?EMSCNr.;eL E;..:Posi..:r:ES

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~

~OCATION OF RELEASE'@

NA 45 so NUMOER TYPE OESCRIPTiON@).. *

=12] I 0 I 0 I 0 l@i~@.___*

NA _____

a

-:i 11 12

.13 P::RSONNEL INJURIES

. Q NL'*!.BcS D!:SCRIPTlON~

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1 12 co LOSS OF 'JP. 0LU~1AGE ro ;:_o.c1 LITY t;:;\\

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I U NRC USE Of-JL Y

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NAME 0F PRE PAR ER,.. _

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