ML20211B507: Difference between revisions

From kanterella
Jump to navigation Jump to search
VisualWikitext
StriderTol Bot insert
 
StriderTol Bot change
 
Line 17: Line 17:


=Text=
=Text=
{{#Wiki_filter:r Georgia Power Company Post Office Box 282 DU6 l       *
{{#Wiki_filter:r DU6 Georgia Power Company Post Office Box 282 l
  ,          Waynesboro, Georgia 30330 Telephone 404 554 9%1, Ext. 3360 404 724 8114. Ext. 3360 L
Waynesboro, Georgia 30330 Telephone 404 554 9%1, Ext. 3360 404 724 8114. Ext. 3360 L
: o. o.ro ,e,                              , J":: 4   M0:30               Georgia Power gPres ent,                                                          the smthem 6,xtrc sgrem May 29, 1986 United States Nuclear Regulatory Commission l
, J":: 4 M0:30 Georgia Power
Region II                                                       File: X78G03-M107 Suite 2900                                                       Log:     GN-930 101 Marietta Street, Northwest Atlanta, Georgia 30323
: o. o.ro,e, gPres ent the smthem 6,xtrc sgrem May 29, 1986 United States Nuclear Regulatory Commission Region II File: X78G03-M107 l
Suite 2900 Log:
GN-930 101 Marietta Street, Northwest Atlanta, Georgia 30323


==Reference:==
==Reference:==
Vogtle Electric Generating Plant-Units 1 and 2; 50-424, 50-425; Derating Factors for Cable Ampacities in Closed Tray; Letter GN-897, dated May 6, 1986 Attention: Mr. J. Nelson Grace In our previous correspondence on this subject, Georgia Power Company described a potentially reportable condition whereby ampacity derating for power cables routed in solid bottom cable tray with unventilated cover was not specifically addressed in applicabla calculations and design criteria.
Vogtle Electric Generating Plant-Units 1 and 2; 50-424, 50-425; Derating Factors for Cable Ampacities in Closed Tray; Letter GN-897, dated May 6, 1986 Attention: Mr. J. Nelson Grace In our previous correspondence on this subject, Georgia Power Company described a potentially reportable condition whereby ampacity derating for power cables routed in solid bottom cable tray with unventilated cover was not specifically addressed in applicabla calculations and design criteria.
A field walkdown was conducted to determine if any unventilated tray covers had been installed either for debris protection or for Regulatory Guide 1.75 separation barriers on power cable tray.                     The walkdown determined that no tray covers had been installed.                 Since no defective condition was identified as a result of the field walkdown, l           Georgia Power Company has concluded that this concern is not reportable pursuant to the requirements of 10 CFR 50.55(e) or 10 CFR 21.
A field walkdown was conducted to determine if any unventilated tray covers had been installed either for debris protection or for Regulatory Guide 1.75 separation barriers on power cable tray.
To prevent future concerns , design drawings are being modified to require engineering approval prior to the installation of unventilated
The walkdown determined that no tray covers had been installed.
;          tray cove *s on solid bottom cable tray susceptible to ampacity derating l           concerns.           In addition, the applicable calculation and design criteria will be revised to address ampacity derating for power cable in closed tray.
Since no defective condition was identified as a result of the field walkdown, l
Georgia Power Company has concluded that this concern is not reportable pursuant to the requirements of 10 CFR 50.55(e) or 10 CFR 21.
To prevent future concerns, design drawings are being modified to require engineering approval prior to the installation of unventilated tray cove *s on solid bottom cable tray susceptible to ampacity derating l
concerns.
In addition, the applicable calculation and design criteria will be revised to address ampacity derating for power cable in closed tray.
This response contains no proprietary information and may be placed in the NRC Public Document Room.
This response contains no proprietary information and may be placed in the NRC Public Document Room.
Yours,truly, f i     {
Yours,truly, f i
                                                        /D 0. Foster' REF/DOF/tdm Distribution on Page Two 8606110713 860529 PDR ADOCK 05000424 S               PDR
{
                                                                                          'l}O      hT  ;
/D
: 0. Foster' REF/DOF/tdm Distribution on Page Two 8606110713 860529 PDR ADOCK 05000424
}O S
PDR hT
'l


    ,  s 'e Page Two xc: U. S. Nuclear Regulatory Commission Document Control Desk Washington, D. C. 20555 J. H. Miller           R. A. Thomas   L. T. Gucwa J. P. O'Reilly         D. R. Altman   C. W. Hayes G. F. Head             P. R. Bemis     G. A. McCarley R. E. Conway           J. A. Bailey   D. S. Read J. T. Beckham         0. Batum       Sr. Resident (NRC)
s 'e Page Two xc:
R. H. Pinson           G. Bockhold     C. S. McCall (OPC)
U. S. Nuclear Regulatory Commission Document Control Desk Washington, D. C.
P. D. Rice             C. E. Belflower J. E. Joiner (TSLA)
20555 J. H. Miller R. A. Thomas L. T. Gucwa J. P. O'Reilly D. R. Altman C. W. Hayes G. F. Head P. R. Bemis G. A. McCarley R. E. Conway J. A. Bailey D. S. Read J. T. Beckham
B. M. Guthrie         J. F. D'Amico   D. C. Teper (GANE)
: 0. Batum Sr. Resident (NRC)
D. E. Dutton           E. D. Groover   NORMS
R. H. Pinson G. Bockhold C. S. McCall (OPC)
P. D. Rice C. E. Belflower J. E. Joiner (TSLA)
B. M. Guthrie J. F. D'Amico D. C. Teper (GANE)
D. E. Dutton E. D. Groover NORMS
:}}
:}}

Latest revision as of 00:25, 6 December 2024

Final Part 21 & Deficiency Rept Re Failure to Address Ampacity Derating for Power Cables in Calculations & Design Criteria.Initially Reported on 860506.Condition Not Reportable Per 10CFR50.55(e) & Part 21
ML20211B507
Person / Time
Site: Vogtle  
Issue date: 05/29/1986
From: Foster D
GEORGIA POWER CO.
To: Grace J
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
REF-PT21-86, REF-PT21-86-239-000 GN-930, PT21-86-239, PT21-86-239-000, NUDOCS 8606110713
Download: ML20211B507 (2)
v • d • e


Text

r DU6 Georgia Power Company Post Office Box 282 l

Waynesboro, Georgia 30330 Telephone 404 554 9%1, Ext. 3360 404 724 8114. Ext. 3360 L

, J":: 4 M0:30 Georgia Power

o. o.ro,e, gPres ent the smthem 6,xtrc sgrem May 29, 1986 United States Nuclear Regulatory Commission Region II File: X78G03-M107 l

Suite 2900 Log:

GN-930 101 Marietta Street, Northwest Atlanta, Georgia 30323

Reference:

Vogtle Electric Generating Plant-Units 1 and 2; 50-424, 50-425; Derating Factors for Cable Ampacities in Closed Tray; Letter GN-897, dated May 6, 1986 Attention: Mr. J. Nelson Grace In our previous correspondence on this subject, Georgia Power Company described a potentially reportable condition whereby ampacity derating for power cables routed in solid bottom cable tray with unventilated cover was not specifically addressed in applicabla calculations and design criteria.

A field walkdown was conducted to determine if any unventilated tray covers had been installed either for debris protection or for Regulatory Guide 1.75 separation barriers on power cable tray.

The walkdown determined that no tray covers had been installed.

Since no defective condition was identified as a result of the field walkdown, l

Georgia Power Company has concluded that this concern is not reportable pursuant to the requirements of 10 CFR 50.55(e) or 10 CFR 21.

To prevent future concerns, design drawings are being modified to require engineering approval prior to the installation of unventilated tray cove *s on solid bottom cable tray susceptible to ampacity derating l

concerns.

In addition, the applicable calculation and design criteria will be revised to address ampacity derating for power cable in closed tray.

This response contains no proprietary information and may be placed in the NRC Public Document Room.

Yours,truly, f i

{

/D

0. Foster' REF/DOF/tdm Distribution on Page Two 8606110713 860529 PDR ADOCK 05000424

}O S

PDR hT

'l

s 'e Page Two xc:

U. S. Nuclear Regulatory Commission Document Control Desk Washington, D. C.

20555 J. H. Miller R. A. Thomas L. T. Gucwa J. P. O'Reilly D. R. Altman C. W. Hayes G. F. Head P. R. Bemis G. A. McCarley R. E. Conway J. A. Bailey D. S. Read J. T. Beckham

0. Batum Sr. Resident (NRC)

R. H. Pinson G. Bockhold C. S. McCall (OPC)

P. D. Rice C. E. Belflower J. E. Joiner (TSLA)

B. M. Guthrie J. F. D'Amico D. C. Teper (GANE)

D. E. Dutton E. D. Groover NORMS

Retrieved from "https://kanterella.com/w/index.php?title=ML20211B507&oldid=4012265"