ML17252A272: Difference between revisions

From kanterella
Jump to navigation Jump to search
(Created page by program invented by StriderTol)
(Created page by program invented by StriderTol)
Line 17: Line 17:


=Text=
=Text=
{{#Wiki_filter:Commonwec9 Edison Dresden Nuclear Power Station R.R. #1 Morris, Illinois 60450 Telephone 815/942-2920 BBS Ltr. # 333 April 20, Mr. James G. Keppler, Regional Directorate of Regulatory Operation -Region I I I U. s: "Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, 111 inois 60137 REGULATORY DDCKEI RLE COPY Enclosed please find Reportable Occurrence 50-249/1977-7. This report is being submitted to your office in accordance with the bresden Nuc 1 ec;ir Power Station Techn i ca,1 Specif i cat..i ons,. Section 6. 6. B .. BBS: skm *Enclosure cc: Director of Inspection & Enforcement Director of Management & Program Control Fil e/NRC APR 2 5 1977   
{{#Wiki_filter:Commonwec9  
LICENSEE EVENT REPORT CONTROL BLOCK: Lj_** 1 L . , I . I c&sE PRINT ALL,REQUIRED INFORMATION) LICENSEE NAME *@El I I I LI DI RI s I 31 1 0*s 14 REPORT CATEGORY TYPE. 6 LICENSE NUMBER 15 25 REPORT SOURCE DOCKET NUMBER LICENSE . TYPE 41 1 p 11 11 I 26. . 3P EVENT DATE EVENT TYPE I o I 31 31 32 REPORT DATE @E]coN'.T I I I LJ L':J I 01 51 12 14 19 I I o I 3 I 2 I .2 I 7 I 7 I 1014121117171 7 . 8 57. 58 59 60 61 68 69 74 75 80 EVENT DESCRIPTION ffilfil. I During testing of the Unit-3 d)esel generator following maintenance, the engine 7 8 9 lol3r I started,.but*the generator field failed to flash. The generator field flashed 7 . 8 9 lol41'1 during a secon.d start-up of the diesel. The diesel was started a third time, 7 . 8**9 IPl51 J . and again the field did not flash. The Unit-3 diesel generator was then shut 7 0*s lolsl I , down and dee 1 a red i noperab 1 e. A subsequent attempt to start the Unit-2/3 diesel 1 *0 s .SYSTEM CAUSE PRIME i nued) * COMPONENT CoMPONENT CODE . CODE COMPONENT CODE SUPPUER MANUFACTURER VDLATION [&sect;E] IE IE I* w I El NI GI II NI El I WI 019 17 I * l!U 7 8 9 10 11 12 . : .* .*. 17 43 44 47 48 CAUSE DESCRIPTION . < I The failure was 'caused by an intermittent capacitor short in the generator field 7 8 9 flashing circuitry. The defective capaci_tor' was replaced, and the Unit-3 diesel 1* 0* 9 IT1&sect;J I generator was satisfact_orily tested and returned to service. 7 8 9 FACIUTY STATUS Em L:J 7.; 8 .9 FORM OF ACTIVITY 'll. POWER I 01 913 10 CONTENT I 12 13 OTHER STATUS NA {continued) DISCOVERY DESCRIPTION I 80 I 80 I 80 I 80 I 80 k 80 l eo I 80 80 rn RELEASED OF RELEASE AMOUNT OF ACTIVITY w LlJ : I . NA 11 LOCATION OF RELEASE .__------'---------.....JI ., 80 7 8 9 10 PERSONNEL EXPOSURES . NUMBER TYPE. * DESCRIPTION II&sect;] J 0 I 0 I 0 I .. .__ __ NA __________ _;. ___ _;.__;. ______ __, 7 8 9 . 11* . 12 13 80 PERS'ONNEL INJURIES . NUMBER 'DESCRIPTION l1E1 I 0 I 0 I 0 I ':--__ N_A ___________ __ ""'=" 7 8 9* 11 12 80 * * OFFSITE .. CONSEQUENCES NA 7 8 9 LOSS OR DAMAGE . TO FACILITY TYPE [!El DESCRIPTION NA 7 8 9 10 PUBLICITY NA ADDITIONAL FACTORS *Elfil I NA . 7 8 9 80 80 80 7 B. 9 &O J. B. Martin Ext. 265 ....... -----------------------PHONE:_.-... _ _.._ __ _...;_ GPO 881*087   
Edison Dresden Nuclear Power Station R.R. #1 Morris, Illinois  
-. * EVENT DESCR1PTION (continued) -generator was-;:::unsuccessful (R. 0. report no. This event was of little safety significance, since the redundant Unit-2/3 di ese 1 .generator was demonstrated to be operab 1 e short 1 y thereafter (within minutes), and off-site power remained available this interval. ihe -Unit-2 diesel generator experienced a similar field flashing failure in April, 1975. (50-249/1977-7) CAUSE DESCRIPTION (continued) As a long-term action, the diesel generator maintenance procedure will be revised to include a check of the generator field flashing capacitors. The failed capacitot is an 8-microfarad, 150-volt electrolytic unit manufactured by Aerovox: ; *--l : *4: -* ...... : ., ' ... , -. -... ,'J.,J ::::1
60450 Telephone  
815/942-2920  
BBS Ltr. # 333 April 20, Mr. James G. Keppler,  
Regional  
Directorate  
of Regulatory  
Operation  
-Region I I I U. s: "Nuclear  
Regulatory  
Commission  
799 Roosevelt  
Road Glen Ellyn, 111 inois 60137 REGULATORY  
DDCKEI RLE COPY Enclosed  
please find Reportable  
Occurrence  
50-249/1977-7.  
This report is being submitted  
to your office in accordance  
with the bresden Nuc 1 ec;ir Power Station Techn i ca,1 Specif i cat..i ons,. Section 6. 6. B .. BBS: skm *Enclosure  
cc: Director  
of Inspection  
& Enforcement  
Director  
of Management  
& Program Control Fil e/NRC APR 2 5 1977   
LICENSEE  
EVENT REPORT CONTROL BLOCK: Lj_** 1 L . , I . I c&sE PRINT ALL,REQUIRED  
INFORMATION)  
LICENSEE  
NAME *@El I I I LI DI RI s I 31 1 0*s 14 REPORT CATEGORY  
TYPE. 6 LICENSE NUMBER  
15 25 REPORT SOURCE DOCKET NUMBER LICENSE . TYPE 41 1 p 11 11 I 26. . 3P EVENT DATE EVENT TYPE I o I 31 31 32 REPORT DATE @E]coN'.T  
I I I LJ L':J I 01 51  
12 14 19 I I o I 3 I 2 I .2 I 7 I 7 I 1014121117171 7 . 8 57. 58 59 60 61 68 69 74 75 80 EVENT DESCRIPTION  
ffilfil.  
I During testing of the Unit-3 d)esel generator  
following  
maintenance,  
the engine 7 8 9 lol3r I started,.but*the  
generator  
field failed to flash. The generator  
field flashed 7 . 8 9 lol41'1 during a secon.d start-up  
of the diesel. The diesel was started a third time, 7 . 8**9 IPl51 J . and again the field did not flash. The Unit-3 diesel generator  
was then shut 7 0*s lolsl I , down and dee 1 a red i noperab 1 e. A subsequent  
attempt to start the Unit-2/3  
diesel 1 *0 s .SYSTEM CAUSE PRIME  
i nued) * COMPONENT  
CoMPONENT  
CODE . CODE COMPONENT  
CODE SUPPUER MANUFACTURER  
VDLATION  
[&sect;E] IE IE I* w I El NI GI II NI El I WI 019 17 I * l!U 7 8 9 10 11 12 . : .* .*. 17 43 44 47 48 CAUSE DESCRIPTION  
. < I The failure was 'caused by an intermittent  
capacitor  
short in the generator  
field 7 8 9 flashing  
circuitry.  
The defective  
capaci_tor'  
was replaced,  
and the Unit-3 diesel 1* 0* 9 IT1&sect;J I generator  
was satisfact_orily  
tested and returned  
to service. 7 8 9 FACIUTY STATUS Em L:J 7.; 8 .9 FORM OF ACTIVITY  
'll. POWER I 01 913 10 CONTENT I 12 13 OTHER STATUS NA {continued)  
DISCOVERY  
DESCRIPTION  
I 80 I 80 I 80 I 80 I 80 k 80 l eo I 80 80 rn RELEASED  
OF RELEASE AMOUNT OF ACTIVITY  
w LlJ : I . NA 11 LOCATION  
OF RELEASE .__------'---------.....JI  
., 80 7 8 9 10 PERSONNEL  
EXPOSURES  
. NUMBER TYPE. * DESCRIPTION  
II&sect;] J 0 I 0 I 0 I .. .__ __ NA __________  
_;. ___ _;.__;. ______ __, 7 8 9 . 11* . 12 13 80 PERS'ONNEL  
INJURIES  
. NUMBER 'DESCRIPTION  
l1E1 I 0 I 0 I 0 I ':--__ N_A ___________  
__ ""'=" 7 8 9* 11 12 80 * * OFFSITE .. CONSEQUENCES NA 7 8 9 LOSS OR DAMAGE . TO FACILITY  
TYPE [!El DESCRIPTION  
NA 7 8 9 10 PUBLICITY  
NA ADDITIONAL  
FACTORS *Elfil I NA . 7 8 9 80 80 80  
7 B. 9 &O J. B. Martin Ext. 265  
....... -----------------------
PHONE:_.-...  
_ _.._ __ _...;_ GPO 881*087   
-. * EVENT DESCR1PTION  
(continued)  
-generator  
was-;:::unsuccessful  
(R. 0. report no.  
This event was of little safety significance,  
since the redundant  
Unit-2/3  
di ese 1 .generator  
was demonstrated  
to be operab 1 e short 1 y thereafter  
(within minutes),  
and off-site  
power remained  
available  
this interval.  
ihe -Unit-2 diesel generator  
experienced  
a similar  
field flashing  
failure in April, 1975. (50-249/1977-7)  
CAUSE DESCRIPTION  
(continued)  
As a long-term  
action, the  
diesel generator  
maintenance  
procedure  
will be revised to include a check of the generator  
field flashing  
capacitors.  
The failed capacitot  
is an 8-microfarad,  
150-volt  
electrolytic  
unit manufactured  
by Aerovox:  
; *--l : *4: -* ...... : ., ' ... , -. -... ,'J.,J ::::1
}}
}}

Revision as of 14:31, 29 June 2018

Dresden, Units 2 and 3, Transmittal of Reportable Occurrence Report No. 50-249/1977-7
ML17252A272
Person / Time
Site: Dresden  Constellation icon.png
Issue date: 04/20/1977
From: Stephenson B B
Commonwealth Edison Co
To: Keppler J G
NRC/RGN-III
References
50-249/1977-7
Download: ML17252A272 (3)
v • d • e


See also: IR 05000249/2019077

Text

Commonwec9

Edison Dresden Nuclear Power Station R.R. #1 Morris, Illinois

60450 Telephone

815/942-2920

BBS Ltr. # 333 April 20, Mr. James G. Keppler,

Regional

Directorate

of Regulatory

Operation

-Region I I I U. s: "Nuclear

Regulatory

Commission

799 Roosevelt

Road Glen Ellyn, 111 inois 60137 REGULATORY

DDCKEI RLE COPY Enclosed

please find Reportable

Occurrence

50-249/1977-7.

This report is being submitted

to your office in accordance

with the bresden Nuc 1 ec;ir Power Station Techn i ca,1 Specif i cat..i ons,. Section 6. 6. B .. BBS: skm *Enclosure

cc: Director

of Inspection

& Enforcement

Director

of Management

& Program Control Fil e/NRC APR 2 5 1977

LICENSEE

EVENT REPORT CONTROL BLOCK: Lj_** 1 L . , I . I c&sE PRINT ALL,REQUIRED

INFORMATION)

LICENSEE

NAME *@El I I I LI DI RI s I 31 1 0*s 14 REPORT CATEGORY

TYPE. 6 LICENSE NUMBER

15 25 REPORT SOURCE DOCKET NUMBER LICENSE . TYPE 41 1 p 11 11 I 26. . 3P EVENT DATE EVENT TYPE I o I 31 31 32 REPORT DATE @E]coN'.T

I I I LJ L':J I 01 51

12 14 19 I I o I 3 I 2 I .2 I 7 I 7 I 1014121117171 7 . 8 57. 58 59 60 61 68 69 74 75 80 EVENT DESCRIPTION

ffilfil.

I During testing of the Unit-3 d)esel generator

following

maintenance,

the engine 7 8 9 lol3r I started,.but*the

generator

field failed to flash. The generator

field flashed 7 . 8 9 lol41'1 during a secon.d start-up

of the diesel. The diesel was started a third time, 7 . 8**9 IPl51 J . and again the field did not flash. The Unit-3 diesel generator

was then shut 7 0*s lolsl I , down and dee 1 a red i noperab 1 e. A subsequent

attempt to start the Unit-2/3

diesel 1 *0 s .SYSTEM CAUSE PRIME

i nued) * COMPONENT

CoMPONENT

CODE . CODE COMPONENT

CODE SUPPUER MANUFACTURER

VDLATION

[§E] IE IE I* w I El NI GI II NI El I WI 019 17 I * l!U 7 8 9 10 11 12 . : .* .*. 17 43 44 47 48 CAUSE DESCRIPTION

. < I The failure was 'caused by an intermittent

capacitor

short in the generator

field 7 8 9 flashing

circuitry.

The defective

capaci_tor'

was replaced,

and the Unit-3 diesel 1* 0* 9 IT1§J I generator

was satisfact_orily

tested and returned

to service. 7 8 9 FACIUTY STATUS Em L:J 7.; 8 .9 FORM OF ACTIVITY

'll. POWER I 01 913 10 CONTENT I 12 13 OTHER STATUS NA {continued)

DISCOVERY

DESCRIPTION

I 80 I 80 I 80 I 80 I 80 k 80 l eo I 80 80 rn RELEASED

OF RELEASE AMOUNT OF ACTIVITY

w LlJ : I . NA 11 LOCATION

OF RELEASE .__------'---------.....JI

., 80 7 8 9 10 PERSONNEL

EXPOSURES

. NUMBER TYPE. * DESCRIPTION

II§] J 0 I 0 I 0 I .. .__ __ NA __________

_;. ___ _;.__;. ______ __, 7 8 9 . 11* . 12 13 80 PERS'ONNEL

INJURIES

. NUMBER 'DESCRIPTION

l1E1 I 0 I 0 I 0 I ':--__ N_A ___________

__ ""'=" 7 8 9* 11 12 80 * * OFFSITE .. CONSEQUENCES NA 7 8 9 LOSS OR DAMAGE . TO FACILITY

TYPE [!El DESCRIPTION

NA 7 8 9 10 PUBLICITY

NA ADDITIONAL

FACTORS *Elfil I NA . 7 8 9 80 80 80

7 B. 9 &O J. B. Martin Ext. 265

....... -----------------------

PHONE:_.-...

_ _.._ __ _...;_ GPO 881*087

-. * EVENT DESCR1PTION

(continued)

-generator

was-;:::unsuccessful

(R. 0. report no.

This event was of little safety significance,

since the redundant

Unit-2/3

di ese 1 .generator

was demonstrated

to be operab 1 e short 1 y thereafter

(within minutes),

and off-site

power remained

available

this interval.

ihe -Unit-2 diesel generator

experienced

a similar

field flashing

failure in April, 1975. (50-249/1977-7)

CAUSE DESCRIPTION

(continued)

As a long-term

action, the

diesel generator

maintenance

procedure

will be revised to include a check of the generator

field flashing

capacitors.

The failed capacitot

is an 8-microfarad,

150-volt

electrolytic

unit manufactured

by Aerovox:

*--l
*4: -* ...... : ., ' ... , -. -... ,'J.,J ::::1
Retrieved from "https://kanterella.com/w/index.php?title=ML17252A272&oldid=745438"