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See also: [[see also::IR 05000249/2019077]]


=Text=
=Text=
{{#Wiki_filter:8' Commonw.A.  
{{#Wiki_filter:8' Commonw.A.
Edison Dresden  
Edison Dresden Station R.R. #1 Morris, Illinois 60450 Telephone 815/942-2920 BBS Ltr. #77-239 March 23, 1977 Mr. James G. Keppler, Regional Director Directorate of Regulatory Operations  
Station R.R. #1 Morris, Illinois 60450 Telephone  
-Region I I I U. S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137 (nclosed please find Reportable.
815/942-2920  
Occurrence report number 50-249/1977-4.
BBS Ltr. #77-239 March 23, 1977 Mr. James G. Keppler, Regional Director Directorate  
This repo{t is being to your office in with the Dresden Nuclear Power Station Technical Specifications, Section 6.6.B. BBS: j o Enclosure cc: Director of Inspection  
of Regulatory  
& Enforcement Director of Management Information  
Operations  
& Program Cohtrol Fi le/NRC MAR 2 5 1977 LICENSEE EVENT REPORT CONtROL BLOCK: l ,,, 1 e I I I I I.** LsE PRINT AU REQUIRED 1NFORMA.T10NJ LICENSEE NAME . 6 LICENSE NUMBER UC EN SE TYPE ILlolRlsl3I I o I o 1-1 o I o I o I o I ol -1 o I o I l 4 I I I 1 I 1 I 1 I 7 8 9 14 15 25 26 30 .
-Region I I I U. S. Nuclear Regulatory  
Commission  
799 Roosevelt  
Road Glen Ellyn, Illinois 60137 (nclosed please find Reportable.  
Occurrence  
report number 50-249/1977-4.  
This repo{t is being  
to your office in  
with the Dresden Nuclear Power Station Technical  
Specifications, Section 6.6.B. BBS: j o Enclosure  
cc: Director of Inspection  
& Enforcement  
Director of Management  
Information  
& Program Cohtrol Fi le/NRC MAR 2 5 1977
LICENSEE EVENT REPORT CONtROL BLOCK: l ,,, 1 e I I I I I.** LsE PRINT AU REQUIRED 1NFORMA.T10NJ  
LICENSEE NAME . 6 LICENSE NUMBER UC EN SE TYPE ILlolRlsl3I  
I o I o 1-1 o I o I o I o I ol -1 o I o I l 4 I I I 1 I 1 I 1 I 7 8 9 14 15 25 26 30 .  
CATEGORY TYPE. SOURCE @mcoN'T I I . L!:J lJ:J 7 . 8 57. 58 '. _59 60 OOCKET NUMBER I o I s I o I _:_ I o 1-2 I 4 l 9 I 61 68 . EVENT OA TE . I o I 21 21 11 71 '71 69 74 EVENT DESCRIPTION  
CATEGORY TYPE. SOURCE @mcoN'T I I . L!:J lJ:J 7 . 8 57. 58 '. _59 60 OOCKET NUMBER I o I s I o I _:_ I o 1-2 I 4 l 9 I 61 68 . EVENT OA TE . I o I 21 21 11 71 '71 69 74 EVENT DESCRIPTION  
* * -* EVENT TYPE Io I 3 I 31 REPORT DATE 1013121317171  
* * -* EVENT TYPE Io I 3 I 31 REPORT DATE 1013121317171 75 80* fol2l
75 80* fol2l  
__
__  
__
__  
__ s_t_e_a_m_l_t_i_n_e
__ s_t_e_a_m_l_t_i_n_e  
__
__  
__ i_s_o_l_a_t_i_o_n
__ i_s_o_l_a_t_i_o_n  
__ s_w_i_t_c_h
__ s_w_i_t_c_h  
____ __JI 7 . 8 9 80 lol3I
____ __JI 7 . 8 9 80 lol3I  
__
__  
__ w_a_s __ f_o_u_n_d
__ w_a_s __ f_o_u_n_d  
__
__  
__
__  
__
__  
__
__  
__
__  
____ __JI 7 *8 9 80 10151,J I ine would have provided the required isolation had.an _anGal high-flow con-:-l 7* .8 (Q]§J .. ___ . _d_i_t_io_n
____ __JI 7 *8 9 80  
__ o_c_c_u_r_r_e_d_.
10151,J I ine would have provided the required isolation  
___ T_h_i_s __ i._s __
had.an _anGal high-flow  
__ o_c_c_u_r_r_e_n_ce
con-:-l 7* .8 (Q]§J .. ___ . _d_i_t_io_n  
__
__ o_c_c_u_r_r_e_d_.  
* ___  
___ T_h_i_s __ i._s __  
-------------11 7 8 9 PRIME . 80 SYSTEM CODE' @£] 1*c1 ol FACILITY STATUS fill] Ll.J 7 .8 9 FORM OF' ACTIVITY*  
__ o_c_c_u_r_r_e_n_ce  
*rn RELEASED LzJ 7 8 9 PERSONNEL " POWER OTHER STATUS IQ I 4 I 3 I 10 12 13 CONTENT OF RELEASE AMOUNT OF ACTIVITY W . I 10 11 EXPOSURES
__ * ___  
* NUMBER TYPE OESCRIPTION I ol ol ol L1J N 7 8 9 11 12 13 PERS'ONNEL INJURIES NUMBER OESCRIPTION COMPONENT SUPPLIER COMPONENT MANUFACTURER w I BI 0 I 8 I 0 I 43 44 47 METHOD OF DISCOVERY I I 44 45 46 NA \/10LATl)N I tY1 I 48
-------------11  
* LOCATION OF RELEASE 80 I, ... 44".,,: 45  
7 8 9 PRIME . 80 SYSTEM CODE' @£] 1*c1 ol FACILITY STATUS fill] Ll.J 7 .8 9 FORM OF' ACTIVITY*  
..... -* _ _,_... ___________
*rn RELEASED LzJ 7 8 9 PERSONNEL " POWER OTHER STATUS IQ I 4 I 3 I 10 12 13 CONTENT OF RELEASE AMOUNT OF ACTIVITY W . I 10 11 EXPOSURES  
* NUMBER TYPE OESCRIPTION I ol ol ol L1J N 7 8 9 11 12 13 PERS'ONNEL  
INJURIES NUMBER OESCRIPTION  
COMPONENT  
SUPPLIER COMPONENT  
MANUFACTURER  
w I BI 0 I 8 I 0 I 43 44 47 METHOD OF DISCOVERY  
I I 44 45 46 NA \/10LATl)N  
I tY1 I 48 * LOCATION OF RELEASE 80 I, ... 44".,,: 45  
..... -* _ _,_... ___________  
___,I .. w. 80 80 ITEJ lol ol ol* 7 8 9* 11 12 BO OFFSITE. CONSEQUENCES . EE NA 7 8 9 ao LOSS OR DAMAGE .. TO FACILITY . TYPE OESCRIPTION . (Ifilll.J  
___,I .. w. 80 80 ITEJ lol ol ol* 7 8 9* 11 12 BO OFFSITE. CONSEQUENCES . EE NA 7 8 9 ao LOSS OR DAMAGE .. TO FACILITY . TYPE OESCRIPTION . (Ifilll.J  
.,__ ___ N_A _________________________________  
.,__ ___ N_A _________________________________
__,_ __________  
__,_ __________  
...__....__  
...__....__
__ 7 8 9 10 80 PUBLICITY . EfZl *-NA 7 B 9"-------.:.:.:..:--.-...;.  
__ 7 8 9 10 80 PUBLICITY . EfZl *-NA 7 B 9"-------.:.:.:..:--.-...;.
____________________________  
____________________________
_,.. __________________________________  
_,.. __________________________________
ADDITIONAL  
ADDITIONAL FACTORS NA 7 8 9 80 ..
FACTORS NA 7 8 9 80 ..  
__ --____
__ --____  
_______________
_______________  
PHONE: __ E_x_t_._42  
PHONE: __ E_x_t_._42  
........ 1. --GPO 811t*eG7
........ 1. --GPO 811t*eG7 CAUSE DESCRIPTION (Continued)
CAUSE DESCRIPTION (Continued)  
It is believed that the water originated from a leaking area cooler (Which has since been repaired) located above the box. The switch was cleaned and reset to trip at the correct setpoint.
It is believed that the water originated  
In addition, the cable the junction box was sealed. tion of the hearby switches indicated that water was limited to this switch. DPIS 3-261-26 is a Barton model 278 unit with a range of 0 -200 psig.}}
from a leaking area cooler (Which has since been repaired)  
located above the  
box. The switch was cleaned and reset to trip at the correct setpoint.  
In addition, the cable  
the junction box was sealed. tion of the hearby switches indicated  
that water  
was limited to this  
switch. DPIS 3-261-26 is a Barton model 278 unit with a range of 0 -200 psig.
}}

Revision as of 15:03, 17 August 2019

Transmittal of Reportable Occurrence Report No. 50-249/1977-4
ML17252A275
Person / Time
Site: Dresden  Constellation icon.png
Issue date: 03/23/1977
From: Stephenson B
Commonwealth Edison Co
To: James Keppler
NRC/RGN-III
References
50-249/1977-4
Download: ML17252A275 (3)
v • d • e


Text

8' Commonw.A.

Edison Dresden Station R.R. #1 Morris, Illinois 60450 Telephone 815/942-2920 BBS Ltr. #77-239 March 23, 1977 Mr. James G. Keppler, Regional Director Directorate of Regulatory Operations

-Region I I I U. S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137 (nclosed please find Reportable.

Occurrence report number 50-249/1977-4.

This repo{t is being to your office in with the Dresden Nuclear Power Station Technical Specifications, Section 6.6.B. BBS: j o Enclosure cc: Director of Inspection

& Enforcement Director of Management Information

& Program Cohtrol Fi le/NRC MAR 2 5 1977 LICENSEE EVENT REPORT CONtROL BLOCK: l ,,, 1 e I I I I I.** LsE PRINT AU REQUIRED 1NFORMA.T10NJ LICENSEE NAME . 6 LICENSE NUMBER UC EN SE TYPE ILlolRlsl3I I o I o 1-1 o I o I o I o I ol -1 o I o I l 4 I I I 1 I 1 I 1 I 7 8 9 14 15 25 26 30 .

CATEGORY TYPE. SOURCE @mcoN'T I I . L!:J lJ:J 7 . 8 57. 58 '. _59 60 OOCKET NUMBER I o I s I o I _:_ I o 1-2 I 4 l 9 I 61 68 . EVENT OA TE . I o I 21 21 11 71 '71 69 74 EVENT DESCRIPTION

  • * -* EVENT TYPE Io I 3 I 31 REPORT DATE 1013121317171 75 80* fol2l

__

__

__ s_t_e_a_m_l_t_i_n_e

__

__ i_s_o_l_a_t_i_o_n

__ s_w_i_t_c_h

____ __JI 7 . 8 9 80 lol3I

__

__ w_a_s __ f_o_u_n_d

__

__

__

__

__

____ __JI 7 *8 9 80 10151,J I ine would have provided the required isolation had.an _anGal high-flow con-:-l 7* .8 (Q]§J .. ___ . _d_i_t_io_n

__ o_c_c_u_r_r_e_d_.

___ T_h_i_s __ i._s __

__ o_c_c_u_r_r_e_n_ce

__

  • ___

11 7 8 9 PRIME . 80 SYSTEM CODE' @£] 1*c1 ol FACILITY STATUS fill] Ll.J 7 .8 9 FORM OF' ACTIVITY*

  • rn RELEASED LzJ 7 8 9 PERSONNEL " POWER OTHER STATUS IQ I 4 I 3 I 10 12 13 CONTENT OF RELEASE AMOUNT OF ACTIVITY W . I 10 11 EXPOSURES
  • NUMBER TYPE OESCRIPTION I ol ol ol L1J N 7 8 9 11 12 13 PERS'ONNEL INJURIES NUMBER OESCRIPTION COMPONENT SUPPLIER COMPONENT MANUFACTURER w I BI 0 I 8 I 0 I 43 44 47 METHOD OF DISCOVERY I I 44 45 46 NA \/10LATl)N I tY1 I 48
  • LOCATION OF RELEASE 80 I, ... 44".,,: 45

..... -* _ _,_... ___________

___,I .. w. 80 80 ITEJ lol ol ol* 7 8 9* 11 12 BO OFFSITE. CONSEQUENCES . EE NA 7 8 9 ao LOSS OR DAMAGE .. TO FACILITY . TYPE OESCRIPTION . (Ifilll.J

.,__ ___ N_A _________________________________

__,_ __________

...__....__

__ 7 8 9 10 80 PUBLICITY . EfZl *-NA 7 B 9"-------.:.:.:..:--.-...;.

____________________________

_,.. __________________________________

ADDITIONAL FACTORS NA 7 8 9 80 ..

__ --____

_______________

PHONE: __ E_x_t_._42

........ 1. --GPO 811t*eG7 CAUSE DESCRIPTION (Continued)

It is believed that the water originated from a leaking area cooler (Which has since been repaired) located above the box. The switch was cleaned and reset to trip at the correct setpoint.

In addition, the cable the junction box was sealed. tion of the hearby switches indicated that water was limited to this switch. DPIS 3-261-26 is a Barton model 278 unit with a range of 0 -200 psig.

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