ML17173A281

Forwards LER#78-051/03L-0

ML17173A281
Person / Time
Site:	Dresden
Issue date:	10/02/1978
From:	Stephenson B COMMONWEALTH EDISON CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17173A282	List: ML17173A281 ML20027A121
References
78-1313, NUDOCS 7810130165
Download: ML17173A281 (2)

Text

"~i**i( . :'*:i:iDd'\11~~l1Z0"8<.,lI~P:"'ii:..'"-'"'"~' '~."':'~*~~'~'f;..-..-*.** .. ._,_ _______ ---*

~~~*[\ Commonwealth Edison *. {

• Dresden Nuclear Power Station R.R. #1 Morris, Illinois 60450 Telephone 815/942-2920 ,,_

-October 2, 1978 BBS Ltr #78-1313 James G. Keppler, Regional Director Directorate of Regulatory Operations U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 Reportable Occurrence Report #78-051/031-0, Docket #050-237 is hereby submitted to your office in accordance 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 *

. -f')~/-

$.IK* .  ;-vr/d/

B.B. Stephenspn .3 Station superintendent Dresden Nuclear Power Station BBS/deb Enclosure cc: Director of Inspection & Enforcement Director of Management Information & Program Control File/NRC

o;~

LOL BLOC~ ~; n~ .* **.

. **;~*.~N~EEEVE.::::::::~. :.!LN::::~*.:~:~::~::~~~MMl~~ON .

~ I I ,I LI RI ~ UJ01 6

. 8', 9.

DI

• LICENSEE CODE . 14 . . 15 0I 0I -

I 0 I 0 I 0 I 0 I 0 J- I 0 I- 0 IQ)I

.-- LICE~E NUMBER

• 25 *. 26 4 I I ., I I 1' II ©I . I I LICENSE TYPE :10 57 CAT 58

©

°j"~' J~~~~a.~l©I

. s__ .*.

• I so 61 01 51 oI o I o I DOCKET NUMBER*.. -.

21 3( 1101 o I 91 o 111 11 s 1@11 I o I o I 2 I 1 I s 10.

,.** 68 69 EVENT DATE 74 75 . REPORT DATE so

. ; - .EVE!\!T DESCRIPTION AND PROBABLE CONSEQUENCES@ *_. . .

)))) ( while performing surv. DIS 160o'-ll (Press*. Suppression Air Oper. Vlv. press sw. setpt

]IJ 1-~J.) valve :~-1601-24 failed to opera~~ in the specified time limit required by T.S.

~

i 4J7.D.l.a, Table 3.7.1. Safety significance minimal because* redundant (inboard) iso-ill] iJtion valve was operable arid would have.provided containment integrity within* spec-i II[] Ll_i_f_:i_e_d__t_i_m_e_s__a_s__r_e_q~u_i_r_e_d_;_~__Th __i~s_i_s~*-th_e___ f_i_r_s_t~o_c_c_u_r_r_e_n_c_e__ o_f__t_h~i_s__t~y~p_e__a_t__D_r_e_s_d_e_n_*~------'

I rr] I ill B 9 80 SYSTEM CAUSE CAUSE- COMP. VALVE I CODE CODE SUBCODE COMPONENT CODE SUSCOOE SUBCODE i

ll] I SI DI@ L!J@ ~@) IV IA IL IV 10 IP I@ L!J@ L!J@

8 9 10 11 12 13 18 19 . 20 .

i SEQUENTIAL OCCURRENCE . REPORT REVISION

LERIRO CVENT YEJl.R

@ 'REPORT I 7 I 8 I I

_NUMBER 21 22 I I 23 I

24 REPORT NO.

OJ 51 26II I /1 27 28 CODE I 0I 3I 29 wTYPE JO l=1 31 NO.

LQJ.

• 32 ACTION FUTURE EFFECT SHUTDOWN .{.;:::\ ATTACHMENT NPRD-4 PRIME COMP. COMPONENT

.. TAKEN ACTION . ON PLANT METHOD HOURS SUBMITTED FORM SUB. SUPPLIER MANUFACTURER L!.J@~@ W@ ~ .10101010 I U!J@ L!l@ L!J@ .I Pl 31 41 01@

33 i 34 35 36 37 40 41 42 . 43 44 47 CA~E DESCRIPTION AND CORRECTIVE ACTIONS @

CI§]. J Ptobable cause-foreign matter lodged in solenoid operated 4 way valve* thereby pre-1

• JI] I venting proper bleed off. Subsequent testing and external inspection revealed no

]2] I abnormalities, With exception to the initial valve operation all subsequent operationf

))] I w~re well within the specified times setforth in the Tech. Specs. Because of the-1 IrJ l singular nature of the event no further. actions are-deemed necessary.

.8 9  ; 80 FACIUTI IJQ\

\.::!Y METHOD OF A

~

mL!J@ 8 STATUS 9  ! 10

% POWER 1o 1q 1s 1@L-.1_N_A_ _ ___.

12 11

. OTHER STATUS 44 DISCOVERY l.!J~~l 45 ~

DISCOVERY DESCRIPTION

___s_u_r_v_e_i_l_l_a_n_c_e__T_e_s_t~i~n~g:.--______________~

80

. ACTIVITY CONTENT Q\

RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE @ .*,':

~ UJ @ W(§._I__N-=A_________. '--~-:.:N~A~~~~~~~~~~~~~--'*

8 9 ' 10 11 44 ~ ~

PERSONNEL EXPOSURES t:;;\,

NUMBER A TYPE (.;6\ DESCRIPTION~

~10 10 10 '~~~~~~~~=~~~~~~~~~~~~~~~~~~~~~~ **-*

~- .. : .

8 9. . 11 12 13 80 PERSONNEL INJURIES ~

NUMBER DESCRIPTION~

Ll 8. 9 fO jO l.Qj@)L------~NA.:..--~-------------------------------~---'

I 11 12 so

- -.. ,Loss-OF on DAMAGE TO FACILITY 1'43'

!]8 .(;PSI@

9 DESCRIPTION i.::.::J NA .

L10_________________________.:.::.:_____________________________________________;.;:;_______ ~80

....]_ rssu'ff:;~~;;CR. IPTION@ 775 /<!JI sol 7q NRC USE ONLY "'

.lN.J~.A NA *** U-l l 1ll1 l l l l li