ML20206T213
| ML20206T213 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 08/12/1986 |
| From: | Philbrick R ABB IMPELL CORP. (FORMERLY IMPELL CORP.) |
| To: | |
| Shared Package | |
| ML20206T195 | List:
|
| References | |
| PI-06, PI-6, NUDOCS 8610060113 | |
| Download: ML20206T213 (15) | |
Text
4 O
L. Y P _E L Lr A
O PROJECT INSTRUCTION t.w.: u., 2.x A e....Ja L. M + w'.! ::w tc=+-2M#w== wn=- :*r ac=Cm s.:s.,..
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Design Verification of Cable Trays and Tray Clamps f
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INSTRUCTION NUMBER:
PI-06 PAGE 1 OF 15 CLIENT:
Texas Utilities Generatina Comoany PROJECT:
Comanche Peak Steam Electric Station. Unit 1 0210-040 JOB NUMBER (S):
DIVISION (S)
Advarced Enaineerina I
REV.
PREPARED
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TITLE: DESIGN VERIFICATION OF CABLE TRAYS AND TRAY CLAMPS O
NUMBER:
PI 06 REVISION: A PAGE 2 OF 15 TABLE OF CONTENTS Page
1.0 INTRODUCTION
3 2.0 TRAY QUALIFICATION 3
3.0 CLAMP QUALIFICATION 4
3.1 Determine Clamp Loads 4
3.2 Determine Clamp Allowables 5
3.3 Load Comparison 5
3.4 Consider Edge Tear-out 5
4.0 REFERENCES
6 TABLES 7
FIGURES 13 O
,I I
H i
IN PELL ^r J
TITLE: DESIGN VERIFICATION OF CABLE TRAYS AND TRAY CLAMPS NUMBER:
PI 06 REVISION:
A PAGE 3 OF 15
1.0 INTRODUCTION
This project instruction describes the methodology for performing design verification of cable trays and tray clamps.
It is applicable to the Seismic Category I cable tray systems of the Comanche Peak Steam Electric Station (CPSES) Unit 1.
2.0 TRAY QUALIFICATION The following interaction equation shall be satisfied at all straight tray, elbow, cross, and tee locations for all loading conditions identified in PI-02, Reference [1]:
m*
m m
f Y
1.6
+
+
1.0 g
h M
F z
x x
Local tray coordinates as defined in Figure 2.1 where: x,y,z
=
Allowable axial force F
=
O Allowable Moments x,M,Mz t
=
y Applied axial force f
=
x Applied Moments m,m,mz
=
x y The following interaction equation shall be satisfied at all reducer locations for all loading cases identified in PI-02, Reference [1].
- m fe
+
m m
f x
y z
x 4 1.0 1.6
+
- g g
g x
y z
x
- W )/2 where e = (W) 2 W1 = width of the larger tray attached at the reducer Wp = width of the smaller tray attached at the reducer aT1 other terms defined above Allowable forces and moments for straight tray components are provided in Table 2.1.
Allowable forces and moments for horizontal elbows, crosses, and tees are provided in Table 2.2 and allowable forces and moments for reducers are provided in Table 2.3.
Allowable forces and moments for vertical elbows shall be taken as follows:
Axial force: 28% of straight tray M: 100% of straight tray x
M:
28% of straight tray M:
1005 of straight tray z
]7-
)\\
3 3
m
+
1
L % P aE L L *v TITLE: DESIGN VERIFICATION OF CABLE TRAYS AND TRAY CLAMPS O
NUMBER:
PI 06 REVISION:
A PAGE 4 OF 15 3.0 CLAW QUALIFICATION C1 amp qualification consists of comparing analysis clamp loads with the allowable loads determined by testing.
The evaluation is performed for all loading conditions identified in PI-02, Reference [1].
The steps in performing the qualification are as follows:
3.1 Determine Clamp Loads Consider both the forces and the moments applied by the tray to the clamp. All moments (M, M, M ) are converted to force x
y g
couples acting on the. clamp pair. The resulting forces will be absolute summed with conventional clamp forces (Fx,la5p, coo)rdinates):
F Fz as follows (see Figure 3.1 for a definition of local c F,'
=
F
+
2M
+ l M, l w
d
+l2Ml F'=
F i
y y
x l
w l
F'=
F, z
where w is the tray width and d is determined as shown in Figure 3.2 for various types of clamps. For transverse clamps, F shall be taken as zero when it acts towards the support member.x For longitudinal clamps, the larger absolute value of the positive and negative values of F shall be considered.
x If the exact clamp type is unknown, the following values of d shall be assumed:
1 General Cl amp Type Support Member d
Transverse C section, clamp on flange 1-3/4" Transverse C section, clamp on web 1/2 d, + 7/8" Longitudinal C section, clamp on flange min (1/2 bf or 2")
longitudinal C section, clamp on web 2"
where dw = width of web by = width of flange
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IMPaELL"r TITLE: DESIGN VERIFICATION OF CABLE TRAYS AND TRAY CLAMPS AV NUMBER:
PI 06 REVISION:
A PAGE 5 OF 15 3.2 Determine Clamp Allowables The allowables for transverse clamp pairs is given in Table 3.1 for types A. C and G (including both 4" and 6" high types A and G).
The allowables for longitudinal clamp pairs in three directions are given in Table 3.2.
If the clamp pair consists of dissimilar types, the lesser allowable of the two in each direction shall be selected.
If the exact clamp type is unknown, the lower bound allowables for either transverse or longitudinal clamps shall be used (see Tables 3.1 and 3.2).
3.3 Load Comparison The allowables are compared against the loads in each direction and are evaluated using the following linear interaction equations:
(
1.0 (transverse clamps)
+
F Yall z,j)
F F
F h*all F*all z,)) f 1.0 (longitudinal clamps)
+
+
3.4 Consider Edge Tear-out If longitudinal clamps are bolted to the flange of a supporting m9mber, check the analysis loading for edge tear-out against Fy as calculated in Section 3.1.
A110wables are given in Table T.3 for C4 x 7.25 and C6 x 8.2 flanges having a 1/2" or 5/8" bolts.
If it is not known whether the longitudinal clamps are bolted or welded to the support flange, bolting will be assumed and edge tear-cut will be checked.
If the edge distance is unknown,1/8" will be assumed. Note that the edge distances in Table 3.3 do not include the bolt diameter.
O PlEJMINAlY
d5 L%P_EL_ Lwr TITLE: DESIGN VERIFICATION OF CABLE' TRAYS AND TRAY CLAMPS O
NUMBER:
PI 06 REVISION:
A PAGE 6 OF 15
4.0 REFERENCES
(1)
Impell PI-02, Dynamic Analysis of Cable Tray Systems, Revision 4.
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Ah TABLE 2.1 Straight Tray Allowable Forces and Moments 3
3 1j l
Allowables l
[
l l
Moments (Kip-In)
Q l
Antal l l
l M
lYay i Force l i
i Tray Length btwaen Supports (feet)
Q I Section I (k tps) l M l Mz I cn y
l 5
l l
l l
l 4
5 6
7 8
9 10 l
.D H
GG-06SL 13 31 25 6.3 5.0 4.2 3.6 3.1 2.8 2.5 k
N
- -- p GG-12SL 13 41 25 12.7 10.1 8.4 7.2 6.3 5.6 5.0 55 U!
GG-185L 21 64 65 48.6 38.8 32.4 27.7 24.3 21.6 19.4 GG-24SL 21 64 65 64.8 51.8 43.2 37.0 32.4 28.8 25.9 z
z o
3 GG-30SL 42 107 95 118.7 95.0 79.1 67.8 59.3 52.7 47.5 O
GG-36L 42 105 95 14 2.5 114.0 95.0 81.4 71.2 63.3 57.0 mewarm GF-06SL 13 24 18 4.4 3.5 2.9 2.5 2.2 1.9 1.7
--e GF-12SL 24 55 59 29.3 23.4 19.5 16.7 14.6 13.0 11.7
~
GF-185L 24 54 59 43.9 35.1 29.3 25.1 21. 9 19.5 17.5 gr GF-24SL 46 106 89 88.8 71.4 59.2 50.7 44.4 39.4 35.5 r-n dem.-
GF-30SL 46 100 89 110.0 88.8 74.0 63.4 55.5 49.3 44.4 g
GF-3GL 46 97 89 133.2 106.5 88.8 76.1 66.6 59.2 53.2 GI-24SL 46 138 126 126.0 100.8 84.0 72.0 63.0 56.0 50.4
- .v GI-3(LL 76 138 126 157.5 126.0 105.0 90.0 78.7 70.0 63.0 JM-185L 42 81 74 55.5 44.4 37.0 31.7 27.7 24.7 22.2 JM-245L 73 143 123 123.4 98.7 82.2 70.5 61.7 54.8 49.3 5
.M-30SL 73 135 123 154.2 123.4 102.8 88.1 77.1 68.5 61.7
./(
JM-36SL 73 131 123 185.1 148.0 123.4 105.7 92.5 82.2 74.0 y
%,s m
~
O 71 U,
O O
O 2
H i
C q
E F
W x
g g.-
l a
s 4h Y
TABLE 2.2 o
i cn l
Allowable Forces and Moments for Elbows, Crosses, and Tees
- n l
l 1
-4 l
l Allowables 1
5 l
l l
Z l
Moments (Kip-In) o m
l l
l 9
l l Axial l
M n
g Tray Force l
Tray Len9th Between Supports (feet)
I g
muurxemm l Section (kips)
M Mz l
r-y l
1 4
5 6
7 8
9 10 l
m GG-06SL 6
31 11 2.73 2.18 1.82 1.56 1.37 1.21 1.09 l
GG-12SL 6
41 11 5.46 4.37 3.64 3.12 2.73 2.43 2.18 3
Eve.
GG-185L 9
64 29 20.9 16.7 13.9 11.9 10.4 9.29 8.36 E
GG-24SL 9
64 29 27.8 22.2 18.5 15.9 13.9 12.3 11.1 O
2 GG-305L 18 107 42 51.0 40.8 34.0 29.1 25.5 22.6 20.4 5
GG-36S L 18 105 42 61.2 49.0 40.8 35.0 30.6 27.2 24.5
~
GF-06SL 6
24 8
1.89 15.1 1.26 1.08 0.95 0.84 0.76 GF-12SL 11 55 26 12.6 10.0 8.4 7.2 6.3 5.6 5.04 h'g a GF-185L 11 54 26 18.9 15.1 12.6 10.8 9.45 8.4 7.56 GF-24SL 20 106 39 38.1 30.5 25.4 21.8 19.0 16.9 15.2 O
GF-30SL 20 100 39 47.7 38.1 31.8 27.2 23.8 21. 2 19.0 h
A yr GF-365L 20 97 39 57.2 45.8 38.1 32.7 28.6 25.4 22.9 P
GI-24SL 20 138 55 54.1 43.3 36.1 30.9 27.0 24.0 21.6 m
GI-305L 33 138 55 67.7 54.1 45.1 38.7
~ 33.8 30.1 27.0 JM-185L 18 81 33 23.9 19.1 15.9 13.6 11.9 10.6 9.56 es.* ?.
- JM-26L 32 143 54 53.0 42.4 35.3 30.3 26.5 23.5 21.2
.s
.M-30SL 32 135 54 66.3 53.0 44.2 37.9 33.1 29.4 26.5 Ji-365L 32 131 54 79.5 63.6 53.0 45.4 39.8 35.3 31.8 g
a m
m O
m
p Os C5 r
I" W
I g
=
m 3
M
~
TABLE 2.3 S
Allowable Forces and Moments for Reducers 9
3 I
m l
l A110wables l
g I
I I
~
l l
l l
Moments (Kip-In) l l
1 I
l l
l Axial I
ll M
l l
I I
l Tray l Force i
1.
Tray Length ketween Supports (feet) l O
i N
N l Section (kips)
M Mz l
4 5
6 7
8 9
10 l
y E
~^"",643 GG-06SL 13 18 25 6.3 5.0 4.2 3.6 3.1 2.8 2.5 D
q (S
GG-12SL 13 24 25 12.7 10.1 8.4 7.2 6.3 5.6 5.0 rg
- r.
GG-185L 21 39 65 48.6 38.8 32.4 27.7 24.3 21. 6 19.4 5
' "*g,'
GG-26 L 21 38 65 64.8 51.8 43.2 37.0 32.4 28.8 25.9 9
cn GG-305L 42 64 95 113.7 95.0 79.1 67.8 59.3 52.7 47.5 O
m.,.
GG-36SL 42 63 95 142.5 114.0 95.0 81.4 71.2 63.3 57.0 Z
z O
GF-06SL 13 14 18 4.4 3.5 2.9 2.5 2.2 1.9 1.7 er m:n#3 M"
GF-12SL 24 33 59 29.3 23.4 19.5 16.7 14.6 13.0 11.7
-4 f
GF-185L 24 32 59 43.9 35.1 29.3 25.1 21. 9 19.5 17.5 GF-245L 46 64 89 88.8 71.4 59.2 50.7 44.4 39.4 35.5 k
GF-30SL 46 60 89 110.0 88.8 74.0 63.4 55.5 49.3 44.4 n
g'. T-#)
r-GF-36SL 46 58 89 133.2 106.5 88.8 76.1 66.6 59.2 53.2 g
G1-24SL 46 83 126 126.0 100.8 84.0 72.0 63.0 56.0 50.4
- ]'M GI-35L 76 83 126 157.5 126.0 105.0 90.0 78.7 70.0 63.0 g
r.-
JM-185L 42 49 74 55.5 44.4 37.0 31.7 27.7 24.7 22.2 W
JM-245L 73 86 123 123.4 98.7 82.2 70.5 61.7 54.8 49.3 N'
.M-30SL 73 81 123 154.2 123.4 102.8 88.1 77.1 68.5 61.7 JM-365L 73 79 123 185.1 148.0 123.4 105.7 92.5 82.2 74.0 a.
T>O m
u)
O 71 N
~
db IN P_ ELL nr t
TITLE: DESIGN VERIFICATION OF CABLE TRAYS AND TRAY CLAMPS NUMBER:
PI 06 REVISION:
A PAGE 10 OF 15 TABLE 3.1 TRANSVERSE CLAMP ALLOWABLES Clamp Type Load Direction Allowable Load (1bs)
A (4")
F 2500 x
F 3440 z
A (6")
F 1500 x
F 3440 z
C (1/8" thick)
F 41 0
- x F
2200
- z O
G (4")
F 2400 x
F 7200 z
G (6")
F 2400 x
F 7200 z
- Lower bound allowables O
MRElMiNARY
e IMP _ ELL"w TITLE: DESIGN VERIFICATION OF CABLE TRAYS AND TRAY CLAMPS 3
NUMBER:
PI 06 REVISION: A PAGE 11 OF 15 TABLE 3.2 LONGITUDINAL CLAMP ALLOWABLES Clamp Type Load Direction Allowable Load (lbs)
B, E, K F
19,000 x
F 10,000 z
F 15,000 y
J, H F
17,500 x
F 10,000 z
F 15,000 y
0 D, F F
16,000 x
F 10,000 z
F 15,000 y
P, R F
8,300 x
F 9,130 z
F 8,280
- y N, Q F
6,890
- x F
6,800
- z F
9,720 y
- Lower bound allowables
!O l
3 fi ! P. I O
I
- Q E 8 : 1 I, C t t. [..x bb]5 l2WA
\\
AJL N- >'
db L%P_EL_L r 1
TITLE: DESIGN VERIFICATION OF CABLE TRAYS AND TRAY CLAMPS NUMBER:
PI 06 REVISION:
A PAGE 12 OF 15 TABLE 3.3 EDGE DISTANCE ALLOWABLE LOADS Notes:
- 1) For C4 x 7.25 and C6 x 8.2 with 1/2" or 5/8" bolts.
- 2) Edge distance does not include radius of hole.
Edge Distance Allowable Load (lbs)
(in.)
Pair of Bolts 0
1750 1/16 2700 1/8 5080 p
3/8 11700 V
l 1
l O 1
l RE ElMINARY
IMP _EL_L @
TITLE: DESIGN VERIFICATION OF CABLE TRAYS AND TRAY CLAMPS O
NUMBER:
PI 06 REVISION: A PAGE 13 OF 15 hj O
?
z Figure 2.1 Tray Local Coordinates El
]
LLdj ?! A IM A mv s n w i t i
~-
IMP _EL_L'r S
1 TITLE: DESIGN VERIFICATION OF CABLE TRAYS AND TRAY CLAMPS O
NUMBER:
PI 06 REVISION:
A PAGE 14 OF 15
=
- c_la m p
]y fle r Figure 3.1 Clamp Local Coordinate System O
p n b 'L l 4 W ^ m aDV ih lw nm
IMP _EL_L*r 1
f-TITLE: DESIGN VERIFICATION OF CABLE TRAYS AND TRAY CLAMPS Y)
NUMBER:
PI 06 REVISION: A PAGE 15 OF 15 d
d
+<
fruwee cl q 4F9
/ if U
+%
C
<>uf e er r% s4fr.1
/
4 LQg4dorxl alwp @, T,9, h
( ~)
+
oa j
ws I 9 p p i l
d a
I y
y.
Wb
}
79 9
0
/>
s C
- ( Cn kiL~) ck.fs
/y
(., M, (L, Q )
/,'
9*pp4 Y
%ff*A Figure 3.2 Determination of Dimension 'd' kj i
A h s/
(
1 l
f y' 0 L L, ' (M 1, It-l" '.. '
r.
i:
i t