ML20094D830: Difference between revisions

From kanterella
Jump to navigation Jump to search
← Older edit
VisualWikitext
StriderTol Bot change
StriderTol Bot change
 
Line 16: Line 16:


=Text=
=Text=
{{#Wiki_filter:.       . --        ,
{{#Wiki_filter:.
      ),, [         c.                                                                                                     8/r1O L
),, [
c.
8/r1O L
1605-L
1605-L
                      - /LLIN0/8 POWER COMPANY                       U-10183 CLINTON POWER STATION, P.O. BOX 678, CLINTON, ILLINOIS 61727 July 26, 1984
- /LLIN0/8 POWER COMPANY U-10183 CLINTON POWER STATION, P.O. BOX 678, CLINTON, ILLINOIS 61727 July 26, 1984
  .                          : Docket No. 50-461 Mr. James G. Keppler-Regional Administrator
: Docket No. 50-461 Mr. James G. Keppler-Regional Administrator Region III U.S. Nuclear Regulatory Commission
              -                Region III U.S. Nuclear Regulatory Commission
'799 Roosevelt Road
                              '799 Roosevelt Road
" Glen Ellyn, IL 60137
                              " Glen Ellyn, IL   60137
~
        ~
~  
                              ~  


==Subject:==
==Subject:==
Potential 10CFR50.55(c) Deficiency 55-84-15:
Potential 10CFR50.55(c) Deficiency 55-84-15:
Skewed Auxiliary Steel Connections b-                            
Skewed Auxiliary Steel Connections b-


==Dear Mr'. Keppler:==
==Dear Mr'. Keppler:==
 
-On June 29, 1984, Illinois Pnwer Conpany notified Mr. F.
                                    -On June 29, 1984, Illinois Pnwer Conpany notified Mr. F.
?Jablonski,ENRC. Region III,-(Ref:
                              ?Jablonski,ENRC. Region III,-(Ref:     IP Memorandum Y-20708 dated
IP Memorandum Y-20708 dated
                              ' June 29, 1984) of a potentially reportable deficiency concerning theLfabrication and installation of skewed auxiliary steel connections without the required approved design details. Our
' June 29, 1984) of a potentially reportable deficiency concerning theLfabrication and installation of skewed auxiliary steel connections without the required approved design details.
Our
: investigation of this issue is continuing, and this letter is submitted as an interim report in accordance with the requirements of 10CFR50.55(e) (3).
: investigation of this issue is continuing, and this letter is submitted as an interim report in accordance with the requirements of 10CFR50.55(e) (3).
                                    -Statement of Potentially Reportable Deficiency / Background The Clinton, Power Station (CPS) Constructor generated 13 h_
-Statement of Potentially Reportable Deficiency / Background The Clinton, Power Station (CPS) Constructor generated 13 LField Change Requests (FCRs) which indicate that 37 cable tray h_
LField Change Requests (FCRs) which indicate that 37 cable tray
~
                              ; support and~221 conduit support hangers were installed in Seismic
; support and~221 conduit support hangers were installed in Seismic I areas utilizing skewed auxiliary steel connections.
                        ~
LCategory wed auxiliary steel connections were' fabricated and (These'see
I areas utilizing skewed auxiliary steel connections.
-installed without approved design details.
LCategory (These'see wed auxiliary steel connections were' fabricated and
The Constructor used La. standard ~90*,
                              -installed without approved design details. The Constructor used La. standard ~90*, double angle connection detail from Sargent &
double angle connection detail from Sargent &
Lundy (S&L) drawing E05-1912 as a guide in bending the clip angles tolthe angle required.co suit the configuration of the auxiliary steel in the field. The final as-built skewed connection,:neither conforms to approved design details, nor to
Lundy (S&L) drawing E05-1912 as a guide in bending the clip angles tolthe angle required.co suit the configuration of the auxiliary steel in the field.
                              -standard suggested skewed connection details of the AISC Manual.
The final as-built skewed connection,:neither conforms to approved design details, nor to
-standard suggested skewed connection details of the AISC Manual.
Investigation Results/ Corrective Action Illinois Power has prepared and is implementing an
Investigation Results/ Corrective Action Illinois Power has prepared and is implementing an
                              ; investigation plan.to determine the extent of this problem at
; investigation plan.to determine the extent of this problem at L CPS. - The investigation plan includes:
;                            L CPS . - The investigation plan includes:
1.
: 1. A~ review will be performed to identify all conduit and cable
A~ review will be performed to identify all conduit and cable
: tray supports , utilizing skewed auxiliary steel connections that were installed-without approved design details.
: tray supports, utilizing skewed auxiliary steel connections that were installed-without approved design details.
i                                                                                      D 9
9 D
8408080540 840726                                                   bfL                         t PDR ADOCK 05000461
i 8408080540 840726 bfL t
                ,t
,t PDR ADOCK 05000461 gg(0i S-PDR
                  !,        S-               PDR gg(0 i


C                                       ,
C
                                                                      ~
~
I6T' *                       ;Mr.iJcmes1G. Keppler
I6T' *
                                                              ~
~
                                                                                    . Page 2          July 26, 1984
}]
}]
m             ,
;Mr.iJcmes1G. Keppler
  +
. Page 2 July 26, 1984 m
+
w
w
    ;'                      .        ' 2 ~. ;     ;Nonconformance. Reports-(NCRs) will be generated to document da                           Ethose nonconforming or. indeterminate connections identified
' 2 ~. ;
    =
;Nonconformance. Reports-(NCRs) will be generated to document da Ethose nonconforming or. indeterminate connections identified 1
1                                    lbyLitem #1. These NCRs will be resolved:in accordance with
lbyLitem #1.
: approved . site . procedures .
These NCRs will be resolved:in accordance with
1'                     13.               (S&Lwillianalyze'andevaluateeachas-builtconnection, f                         . identified'in item fl, for adequacy.to carry design loads.
=
                                                            ~
: approved. site. procedures.
J4..           :Baldwin Associates Quality Assurance Group will evaluate "thisipotential problem with respect to similar skewed connections which may have been installed by other 1
1' 13.
l disciplines.
(S&Lwillianalyze'andevaluateeachas-builtconnection, f
                                                    . Corrective action taken on this issue to date includes the tissuing of Field Engineering Change Notice l(FECN) No. 4986 2
. identified'in item fl, for adequacy.to carry design loads.
covering generic skewed.connectionLdetails.that will be. utilized
~
                                    >for;all future installations of cable tray supports. S&L-is also f                           (preparing another generic 1FECN covering skewed connection details u                                  .for. future installation-of. conduit-supports.
J4..
xu                               -
:Baldwin Associates Quality Assurance Group will evaluate "thisipotential problem with respect to similar skewed connections which may have been installed by other l
                                                                  ? Safety Implica'tions/ Significance
disciplines.
                          ""                        Illinois-Power Company's-investigation of this potentially
1
                <    ~-          " reportable deficiency is continuing. The safety implications and
. Corrective action taken on this issue to date includes the tissuing of Field Engineering Change Notice l(FECN) No. 4986 covering generic skewed.connectionLdetails.that will be. utilized 2
: significance.of the' issue.will be assessed after further ibackground;information.is: evaluated._ It is anticipated that w-                                  ;tapproximatelyfninety;(90) days'will be necessary toicomplete our
>for;all future installations of cable tray supports.
                                . 1 investigation and to file a final' report on the matter.
S&L-is also f
                  -                              MWe'' trust ~that thisLinterim' report _provides you sufficient
(preparing another generic 1FECN covering skewed connection details
                                    . background information.to perform-a general assessment of this potentially'. reportable deficiency and~ adequately describes our overall'approachcto resolve the problem.
.for. future installation-of. conduit-supports.
Sincerely yours, x   ~
u xu
,,                                                                                            P. Hall Vice President f'                             !.RLC/cah-
? Safety Implica'tions/ Significance Illinois-Power Company's-investigation of this potentially
                      "            Lc'c: ~ NRC; Resident Office-
" reportable deficiency is continuing.
                                                    . Director, Office ofDI&E,-US NRC, Washington, DC         20555 Illinois Department of. Nuclear Safety
The safety implications and
                                                    .INPO Records Center.
~ -
: significance.of the' issue.will be assessed after further ibackground;information.is: evaluated._ It is anticipated that
;tapproximatelyfninety;(90) days'will be necessary toicomplete our w-
. 1 investigation and to file a final' report on the matter.
MWe'' trust ~that thisLinterim' report _provides you sufficient
. background information.to perform-a general assessment of this potentially'. reportable deficiency and~ adequately describes our overall'approachcto resolve the problem.
Sincerely yours, x
~
P. Hall Vice President f'
!.RLC/cah-Lc'c: ~ NRC; Resident Office-
. Director, Office ofDI&E,-US NRC, Washington, DC 20555 Illinois Department of. Nuclear Safety
.INPO Records Center.
s.
s.
e                                             t h
e t
h
* L U}}
* L U}}

Latest revision as of 09:43, 13 December 2024

Interim Deficiency Rept 55-84-15 Re Installation of Skewed Auxiliary Steel Connections W/O Required Approved Design Details.Initially Reported on 840629.Investigation Plan Will Be Implemented to Determine Extent of Problem
ML20094D830
Person / Time
Site: Clinton 
Issue date: 07/26/1984
From: Hall D
ILLINOIS POWER CO.
To: James Keppler
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
55-84-15, U-10183, NUDOCS 8408080540
Download: ML20094D830 (2)
v • d • e


Text

.

),, [

c.

8/r1O L

1605-L

- /LLIN0/8 POWER COMPANY U-10183 CLINTON POWER STATION, P.O. BOX 678, CLINTON, ILLINOIS 61727 July 26, 1984

Docket No. 50-461 Mr. James G. Keppler-Regional Administrator Region III U.S. Nuclear Regulatory Commission

'799 Roosevelt Road

" Glen Ellyn, IL 60137

~

~

Subject:

Potential 10CFR50.55(c) Deficiency 55-84-15:

Skewed Auxiliary Steel Connections b-

Dear Mr'. Keppler:

-On June 29, 1984, Illinois Pnwer Conpany notified Mr. F.

?Jablonski,ENRC. Region III,-(Ref:

IP Memorandum Y-20708 dated

' June 29, 1984) of a potentially reportable deficiency concerning theLfabrication and installation of skewed auxiliary steel connections without the required approved design details.

Our

investigation of this issue is continuing, and this letter is submitted as an interim report in accordance with the requirements of 10CFR50.55(e) (3).

-Statement of Potentially Reportable Deficiency / Background The Clinton, Power Station (CPS) Constructor generated 13 LField Change Requests (FCRs) which indicate that 37 cable tray h_

~

support and~221 conduit support hangers were installed in Seismic I areas utilizing skewed auxiliary steel connections.

LCategory wed auxiliary steel connections were' fabricated and (These'see

-installed without approved design details.

The Constructor used La. standard ~90*,

double angle connection detail from Sargent &

Lundy (S&L) drawing E05-1912 as a guide in bending the clip angles tolthe angle required.co suit the configuration of the auxiliary steel in the field.

The final as-built skewed connection,:neither conforms to approved design details, nor to

-standard suggested skewed connection details of the AISC Manual.

Investigation Results/ Corrective Action Illinois Power has prepared and is implementing an

investigation plan.to determine the extent of this problem at L CPS. - The investigation plan includes

1.

A~ review will be performed to identify all conduit and cable

tray supports, utilizing skewed auxiliary steel connections that were installed-without approved design details.

9 D

i 8408080540 840726 bfL t

,t PDR ADOCK 05000461 gg(0i S-PDR

C

~

I6T' *

~

}]

Mr.iJcmes1G. Keppler

. Page 2 July 26, 1984 m

+

w

' 2 ~. ;

Nonconformance. Reports-(NCRs) will be generated to document da Ethose nonconforming or. indeterminate connections identified 1

lbyLitem #1.

These NCRs will be resolved:in accordance with

=

approved. site. procedures.

1' 13.

(S&Lwillianalyze'andevaluateeachas-builtconnection, f

. identified'in item fl, for adequacy.to carry design loads.

~

J4..

Baldwin Associates Quality Assurance Group will evaluate "thisipotential problem with respect to similar skewed connections which may have been installed by other l

disciplines.

1

. Corrective action taken on this issue to date includes the tissuing of Field Engineering Change Notice l(FECN) No. 4986 covering generic skewed.connectionLdetails.that will be. utilized 2

>for;all future installations of cable tray supports.

S&L-is also f

(preparing another generic 1FECN covering skewed connection details

.for. future installation-of. conduit-supports.

u xu

? Safety Implica'tions/ Significance Illinois-Power Company's-investigation of this potentially

" reportable deficiency is continuing.

The safety implications and

~ -

significance.of the' issue.will be assessed after further ibackground;information.is: evaluated._ It is anticipated that
tapproximatelyfninety;(90) days'will be necessary toicomplete our w-

. 1 investigation and to file a final' report on the matter.

MWe trust ~that thisLinterim' report _provides you sufficient

. background information.to perform-a general assessment of this potentially'. reportable deficiency and~ adequately describes our overall'approachcto resolve the problem.

Sincerely yours, x

~

P. Hall Vice President f'

!.RLC/cah-Lc'c: ~ NRC; Resident Office-

. Director, Office ofDI&E,-US NRC, Washington, DC 20555 Illinois Department of. Nuclear Safety

.INPO Records Center.

s.

e t

h

  • L U
Retrieved from "https://kanterella.com/w/index.php?title=ML20094D830&oldid=4326008"