ML20128K095
| ML20128K095 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 06/11/1984 |
| From: | GIBBS & HILL, INC. (SUBS. OF DRAVO CORP.) |
| To: | |
| Shared Package | |
| ML20128K080 | List: |
| References | |
| DP-1, NUDOCS 8507100477 | |
| Download: ML20128K095 (9) | |
Text
.
TEXAS UTILIT.IES GENERATING COMPANY AGENT FOR DALLAS POWER & LIGHT COMPANY TEXAS ELECTRIC SERVICE COMPANY TEXAS POWER & LIGHT COMPANY COMANCHE PEAK STEAM ELECTRIC STATION UNIT NOS. 1&2 DESIGN PROCEDURE: DP-1 SEISMIC CATEGORY I ELECTRICAL CABLE TRAY SUPPORTS JUNE 11, 1984 p !, u e
i I
l l
l l
GIBBS & HILL, Inc.
ENGINEERS, DESIGNERS, CONSTRUCTORS NEW YORK, NEW YORK
\\
DR KO 45 PDR
\\
A
^
~?-i.--
~
~
~
yy 1 o
l CONTENTS l
SECTION TITLE PAGE 1.0 SCOPE OF WORK 1
2.0 RESPONSIBILITIES 1
t 2.1 ELECTRICAL DISCIPLINE 1
2.2 STRUCTURAL DISCIPLINE 1
3.0 DESCRIPTION
OF SUPPORT SYSTEM 2
3.1 DESCRIPTION
2 3.2 SUPPORT CATEGORIES 2
4.0 DESIGN AND DOCUMENTATION 2
4.1 DESIGN 2
j 4.2 DOCUMENTATION 3
4.3 DOC UM E'*T CO" ?T.* L i
5.0 REVISIOi;5 4
5.3 DRAWING REVISION 7
5.2 DE/CD REVISION 7
j 'I'
'5. 3 DCA AND CMC REVISIONS 7
6.0 REVIEW 7
6.1 G&H NY-BASED DESIGN CHANGE REVIEW 8
6.2 CPSES SITE-BASED DESIGN CHANGE REVIEW 8
4 0
1 DP-1 0
1.0 SCOPE OF WORK This document covers the procedures used in the design of Seismic Category I
Electrical Cable Tray Support Systems for the Comanche Peak Steam Electric Station.
These support systems under consideration are located in the Reactor, Safeguards, Auxiliary, Electrical Control,
- Fuel, Service Water Intake Structure and Diesel Generator Buildings.
2.0 RESPONSIBILITIES Close coordination between the Electrical and Structural disciplines is required to achieve adequate design of the support systems.
Responsibilities of these two disciplines are divided as follows:
2.1 ELECTRICAL DISCIPLINE a.
Select cable trays b.
Prepare cable tray layout drawings.
c.
Determine combined enveloping tray and cable weights.
2.2 STRUCTURAL DISCIPLINE a.
Establish specification requirements for Vendors' seismic qualification to ensure that the cable trays under specified loading, are capable of withstanding the loads induced by SSE without loss of function.
qp;'-:a b.
Review and evaluate tray seismic qualification reports submitted by the vendor for compliance with specifi-e-
cation requirements.
c.
Incorporate cable tray supports on the structural drawings based on the electrical tray raceway drawings.
d.
Check all tray supports for interferences, with other components and revise as required.
e.
Select structural materials and shapes for the support structures.
f.
Develop generic support configurations for general plant use to suit building and tray geometric requirements.
Develop special supports as required where use of generics is not appropriate.
/ ' ;t
~
DP-1 4
' i 4
d
.; g,4
~The -support configuration is selected by the engineers
.to suit the specific tray layout.
s h.
Perform analysis and design of the cable tray support structures and their wa]T/ ceiling interface connection deemils.
(
- .o
3.0 DESCRIPTION
OF SUPPORT SYSTEM
+
c g1 kw
3.1 DESCRIPTION
"f The cable tray support system consists of the cable tray, vertical and horizontal support
- members, bracing is-
/
' members and the connections to building structures.
The cable tray support system is designed to withstand the combined effects of all loads imposed on the system.
P 3.2 SUPPORT CATEGORIES
./
Cable tray sUports used for the Comanche Peak Steam Electric Station are divi,ded "into the following two categories:
s a.
Generic ~ supports:
Generic Supports are supports
"#f
^
j designed for typical geometry and worst envelope loading
,~ conditions for use throughout the plant.
b.
Special Supports:
Special Supports are supports designed for"particular. geometry and loading conditions.
~
- ;.--g _ 4.0 DESIGN AND DOCUMENTATION i
4.1 DESIGN Lead com'qinat(ons for the analysis and design of the cable tray, supports are in accordance with the
'I applicable ' sections of the. FSAR.
The design of the j;
support structural' members are in accordance with the l
applicable requirements' of AISC " Specification for the Design, Fabrication and Erection of Structural Steel for j-
, Buildings."
~
r a
D
- i. s
./
t
,/
t j
--.......,_ ~.
4.2 DOCUMENTATION 4.2.1 DRAWINGS a.
The cable tray support-span, location and detail identification are shown on the structural cable tray support outline drawings, i.e. 2323-El (or E2) - XXX -S drawing series.
The XXX is a 500 series drawing for the Reactor
- Building, a
600 series drawing for the Safeguards
- Building, a
700 series drawing for the Auxiliary and Safegurads Building and a
800 series drawing for the Fuel Building.
b.
The generic cable tray support details are shown on the structural cable tray support detail drawings 2323-S-0900 series.
Drawing 2323-S-0901 shows the generic regular cable tray supports, drawing 2323-5-0902 shows the generic longitudinal cable tray supports and drawing 2323-S-0903 shows the generic regular and multi-directional cable tray supports.
Special cable tray support details are shown on the support detail drawings or the support outline drawings, c.
The support connection details at the wall / ceiling interface are shown on the following drawings:
Drawings 2323-S-0902; 0903; 0908; 0909 and 0929 for connection details using Hilti expansion bolts and/or Richmond Screw inserts.
Drawings 2323-S-0919 and 0920 for connections attached directly to embedded strip plates.
{
q {-+-_.
Drawings 2323-S-0923 thru 0926 inclusive for connections attached directly to large steel plates.
l d.
Each cable tray support as defined in the support l
cutline drawing is identified, in a rectangular box next to the
- support, the support type, the height and the l
width of the support frame and other pertinent information.
The following are examples of how the supports are identified:
EXAMPLE 1:
A L = 3'-0" y
h = 2'-2" l
l 8
i
~
DP-1 This represents a
generic regular cable tray support Case AI having a frame width of 3'-0" and a frame height of 2'-2".
This detail is shown on the structural cable tray support detail drawing 2323-S-0901:
EXAMPLE 2:
L-B2:L = 3'-6" hy = 5t0 ". h2 = 3'-8" 1 = 2'-4" This represents a
generic longitudinal cable tray support case L-B2 having a frame width of 3'-6" and a
frame height of 5'-0" with intermediate beams located at 3'-8" and 2'-4" from ceiling.
This detail is shown on the structural cable tray su. ort detail drawing 2323-S-0902:
Det.
"20" (S-0904)
EXAMPLE 3:
L - 4e-0", h
= 6'-0"
~
1 h2 = 4'-8", h
= 3'-4" 3
This represents a special cable tray support detail "20" shown on structural cable tray support detail drawing 2323-S-0904.
The width of the frame is 4'-0" and the height is 6'-0" with intermediate beams located at 4'-8" and 3'-4" from ceiling.
4.2.2.
CALCULATIONS Design calculations are prepared for cable tray support structures and filed in books identified by the letters,
- SCS, a
hyphen, followed by the three numerical numbers and end with the letter, C (for example, SCS-101C).
The JT:," -
calculations are organized into the following six categories:
a.
Criteria Criteria calculations are shown in calculation book SCS-101C, Set 5.
b.
Generic Cable Tray Supports b.1 Calculations for the generic regular cable tray supports as shown on drawing 2323-S-0901 are given in; Calculation Books SCS-101C, Set 1 Computer Analyses:
DMI-5P; DMI-11C, Set 3 atd DMI-1GP4 4
- - - ~ ~ - - - - -
,w, ge-ws
,o, w
wvewo----no--' m-w m e -
-.,,~,------e,,
-nn
---w
-m-
~..
DP-1
- o
+
4 7
b.2 Calculations for the generic longitudinal cable tray 3
supports as shown on drawing 2323-S -0902 are given in; i
Calculation Book:
SCS-101C, Set 2 computer Analyses:
DMI-5P 4
b.3 Calculations for the generic regular and multi-directional cable tray supports as shown on drawing 2323-S-0903 are given in; Calculation book:
SCS-101C, Set 3.
4 c.
Special Cable Tray Supports calculations for the special cable tray supports are sorted by their referenced cable tray support outline drawings.
Calculation book number and set number are.
j assigned to each cable tray support outline drawing containing special cable tray supports.
For example; Calculations for the special cable tray supports as shown on drawing 2323-El-0500-01-S are given in calculation book SCS-103C, Set 1.
The Structural Department Calculation Master Index lists all the calculation books corresponding to the cable tray support outline drawings.
d.
Connections connection calculations are shown in the following calculation books:
Allowable loads for Hilti expansion bolts and Richmond j
g...
inserts:
SCS-101C, Set 5 i
e-l Allowable loads on embedded strip plates:
SCS-111C, Set 1.
Allowable loads on large steel plates:
SCS-111C, Set 7 Connection details attached to embedded strip plates as shown on drawings 2323-S-0919 and 0920:
SCS-113C, Sets 1&2 connection details attached to large steel plates as shown on drawings 2323-S-0923 thru 0926 inclusive SCS-113C, Sets 3 thru 7.
l
'*'*?_?
- ,
- L._:,.l_,
---.,,,J.J*%_*~-
' =*
- 'R**T**:2
i y.
e.
CMCs and DCAs Calculations for the CMCs and DCAs are listed in the CMC and DCA Master Indexes.
f.
Miscellaneous Calculations for the miscellaneous items on cable tray supports are identified by topics as follows:
Weld undersize:
SCS-125C and SCS-146C books 1 & 2 i
Weld undercut:
SCS-145C and SCS-147C.
4.2.3 DESIGN CHANGES i
Design Changes may be implemented by drawing revision,
}
DE/CD revision and CMC or DCA revision and are prepared in accordance with Section 5.0, Revisions.
4.3 DOCUMENT CONTROL t
4.3.1 CALCULATIONS Preparation and checking of technical calculations are performed in accordance with GEH Project Procedures Manual Design Control Procedure DC-7.
c..u 4.3.2 DRAWINGS Preparation and checking of drawings are performed in accordance with G&H Project Procedures Manual Design Control Procedure DC-3.
4.3.3 DESIGN REVIEW Design review of calculations and drawings are performed in accordance with G&H Project Procedures Manual Design Control Procedure DC-8.
5.0 REVISIONS During the course of the project, modifications and/or changes are needed to be made to the Category I
cable
~~ ~: r __ _ -_?_-
DP-1
)
I i
tray support structural drawings which have been released for construction.
One of the following three methods is used for these revisions:
I 2
5 '.1 DRAWING REVISION 4
Modifications may be incorporated into the appropriate drawing.
The procedure for revising the drawing and the associated calculations are the same as that for the original issue of the documents as outlined in G&H Project Procedures Manual DC-3 and DC-7, respectively.
5.2 DE/CD REVISION In lieu of revising the design
- drawing, a
DE/CD (Design / Engineering Change / Deviation) may be prepared and issued.
The field will then prepare a DCA (Design Change Authorization) or CMC (Component Modification Card) using the design change information on the DE/CD and initiate the necessary action to implement the change.
5.3 DCA AND CMC REVISIONS Revisions to engineering drawings may be initiated by authorized field personnel after the official release of j
the engineering drawing for construction.
The revision is accomplished by issuing Design Change Authorizations j
(DCAs) or Component Modification Cards (CMCs)in accordance with site procedures.
q.Q-u.
~
l t-6.0 REVIEW i
l Drawings and Calculations are reviewed in accordance with Section 4.3.3 Design Review.
Site generated design change documents (DCAs/CMCs) and their associated l
calculations are required to be reviewed by the G&H NY -
l based design change review team or the CPSES site -
based design change review team.
Design reviewers are members of the team who have not contributed to the field change and have been formally authorized by G&H NY to review the field changes shown on the DCA/ CMC.
i a
l r
_ _. _,.. _ _ _ _, _ _ _. _ _ - _,