ML17252A459
| ML17252A459 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 08/25/1978 |
| From: | Stephenson B Commonwealth Edison Co |
| To: | James Keppler NRC/RGN-III |
| References | |
| 78-031/03L-0 | |
| Download: ML17252A459 (2) | |
Text
Commonwe.Edison Dresden Nuclear Power Station R.R. #1 Morris, Illinois 60450 Telephone 815/942-2920 BBS Ltr. #78-1185 James G. Keppler, Re-gional Director August 25, 1978 Directorate of Regulatory Operations - Region III U.S. Nuclear Regulatory Cormnission 799 Roosevelt Road Glen Ellyn, IL 60137 C.)
.:*.*1
-~.
- _. ~,
r**.,
A': -:i_ ~-.
C)
- .:0
- r:;~;o
- .
- i*
()
CJ)
'.J'.}
-*..J OJ
(/.)
1"11 v
w
- t;
s
- --~1 I
Reportable Occurrence Report- //78-031/03L-O, Docket 11.~ereby submitted to your office in accordance with Dresden ~~r 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.
~
/
Station Dresden BBS/deb Enclosure cc:
Director of Inspection & Enforcement Director of Management !J!nf"0i:'@atruon & Program Control File/NRC 1-(
f"': ~ **...:*
'~ r-;
C-; c.-*:*
!"']*-*
{/)'-'~
--l
(..:; ;u
-~
0 -,- i
NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION 17-711~
LICENSEE EVENT REPORT I<:'...
OONTf!OL BLtCK: I 1
11 10 6
. (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) ffi I I I L I D I R I s I 3 101 0 I 0 I~ I 0 I 0 I 0 I 0 l 0 I : 0 I 0 101 4 I I I I I I I I 101 I. I 0 7
8 9
LICENSEE CODE 14 15 LICENSE NUMBER 25 26 LICENSE TYPE
- SO 57 CAT 58 CON'T ITDJ
- 7.
8
- ~~~~~ W©I o Is Io Io lo I 21 4 I 9 IG)lo I 7 I 2 I 6 I 7 l a '01 o ! s I 21 s I 1 I s IG) 60 61 DOCKET NUMBER 68
- 69 EVENT DATE 75 REPORT DATE BO EVENT DESCRIPTION AND PROBABLE CONSEQUENCES@
.((12] I While cycling the drywell equipment drain line ~solation valve 3-200I-5 after a limit I
@TI]
ITEl
[]:ill
[]:IIJ
@2J
[§))]
switch adjustment, it was found that isolation valve 3-200I-6 would not close.
The safety significa'.nce of this ev.ent was minimal because isolation valve 3-2001-5 was immediately closed and primary integrity was maintained.
Similar event occurred on Unit 2 as ref in I-IZ-2-74-7.
7 8 9 80
- '[ill]
7 -
8 SYSTEM CODE IS ID I@
9 10
~. LER/RO*cVENTYEAR 0
REPORT I 7 I 8 I NUMBER 21 22 CAUSE CAUSE CODE SUBCOOE COMPONENT CODE
- LLJ@: UJ@ I v I A I L I v I 0 I p I@
11 12 13 1B SEQUENTIAL OCCURRENCE REPORT NO.
CODE I 0 I 3 I I I I /J I 0 I 3 I 23 24 26 27 28 29 COMP.
SUBCOOE LJJ@
19 REF.ORT TYPE LU 30 VALVE SU BC ODE ll_J@)
20 l.=1 31 ACTION FUTURE TAKEN ACTION EFFECT ON PLANT SHUTDOWN'
- ~
ATTACHMENT METHOD HOURS '231 SUBMITTED NPR0-4 FORM :o.UB.
PRIME COMP.
SUPPLIER LIJ@LLJ@
lz.J@
Lz..l I o I o I o I o I Ll!J@
JJ 34 JS
- 36.
37 40 41 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS @
W@)
42
- w.
43 REVISION NO.
l..QJ 32 COMPONENT MANUFAC.TURER I Al 4 I 9 I 9 I@
44 4.7
(;:r.
~
I The seals in the solenoid valve that operates isolation valve 3-200I-6 were deterior-I 1.. 1--j.:..l-f I ated causing the valve tcL.fail.. The solenoid* v:.alve:. was replaced.
Isolation. valve *, I*
.,L.,,..o* *""-.....,_o:J_°!
OJ)) I 3-2001-6 was tested satisfactorily and returned to service.
No further corrective action necessary.
o::m 7
- 8. 9 FACILITY IJQ\\
STATUS
% POWER OTHER STATUS \\::::J
[2JTI w@ I 01 Bl sl@)_I _NA_* ____
7.
8 9
10 12 11 ACTIVITY CONTENT t::';;\\
RELEASED OF RELEASE AMOUNT OF ACTIVITY ~
8TI W @). UJ@._I __
N;......A___,. ____ __,
7 8
9 10 11 PERSONNEL EXPOSURES Q\\
BO METHOD OF
(.;:;\\
DISCOVERY DISCOVERY DESCRIPTION ~
~~-'~-O~p_e_r_a_t_i_o_n_a_l~Ev_e_n_t~~~~~~~~~~-
45 46 44 BO NA LOCATION OF RELEASE@.
44 45 BO
. NUMBER A
TYPE DESCRIPTION
[!]TI 1010 IOj(0~@).__* ____ N_A~*------~-------------'
7 8
9 11 12 13 BO PERSONNEL INJURIES Q
NUMBER OESCRIPTJON6 E:EJ I 0 I 0 I 0 l@.__ __. ____
N_A_. _______________ ;__ ___
7.
8 9
. 11 12 BO LOSS OF OR DAMAGE TO FACILITY-1'43\\
TYPE DESCRIPTION
\\:.::)
[Q2) l_£J@)~_* ________
N_A ___________ '--------~---'
8 9
10 PUBLICITY Q
ISSUED/,;";\\ DESCRIPTION~
NRC USE. ONL y ITI2J llU~-* --------=N="--_____
--J I 1.1 I I I I I I I I I I~
BO 8
9 10 68 69 BO*;