12 0 107 KB
Project WCR No
Prepared by Checked by Date
: Lifting of Rocker Arm :
: Azlan : : 27-07-2009
1.0 C.O.G GEOMETRY DIMENSION PLAN DETAILS 6096 3048
3048
A1
B1
3201
3201
6402
C.L
CoG 3201
3201
CL
A2
B2 3048
3048
2.0 PADEYE ORIENTATION
A1
3048
3201
tan 1 =
1 =
3201
tan 2 =
3201 3048
3201 3048
2 =
46.40 deg.
3201
A2
B1
3048
46.40 deg.
3201
3048
tan 4 =
4 =
3048
3201 3048 46.40 deg.
tan 3 =
3 =
B2
3201 3048 46.40 deg.
0 Project WCR No
: :
Prepared by Checked by Date
Lifting of Rocker Arm 0
: : :
3.0 PADEYE CENTRE HOLE COORDINATE
Z =
-200
Z
X1
A1
X2
46.40
B1 46.40
Y2 Y1
X1 = -200 = -138
cos 46.40 mm
X2 = -200 = -138
Y1 = -200 = -145
sin 46.40 mm
Y2 = -200 sin 46.40 = -144.84 mm
Y4
A2
46.40 X4
cos 46.40 mm
Y3
46.40 X3
B2
X4 = -200 = -138
cos 46.40 mm
X3 = -200 = -138
cos 46.40 mm
Y4 = -200 = -145
sin 46.40 mm
Y3 = -200 = -145
sin 46.40 mm
Azlan 0 27-07-2009
0 Project WCR No
Prepared by Checked by Date
: Lifting of Rocker Arm : 0
: Azlan : 0 : 27-07-2009
4.0 RIGGING GEOMETRY ON PLANE
-138
3186
3186
-138
A1
B1
-145
-145
L A1 L B1 3346
3346
3346
3346
L B2 L A2 -145
-145
A2
B2 -138
3186
3186
-138
L A1
= [( 3186 )2 + ( = 4620 mm
3346
)2]1/2
L B1
= [( 3186 )2 + ( = 4620 mm
3346
)2]1/2
L A2
= [( 3186 )2 + ( = 4620 mm
3346
)2]1/2
L B2
= [( 3186 )2 + ( = 4620 mm
3346
)2]1/2
5.0 VERTICAL REACTION AT PADEYES: BASE CASE
Jacket Base Weight = 142
MT
Contingencies of 10% = 4.3
MT
Padeye Design Weight, WL = 146.3
Rigging Weight = 20 Sling Design Weight,WP = 166.3
MT
RA1
=
3048 6096
x x
3201 6402
x
166.26
=
41.6
MT
RB1
=
3048 6096
x x
3201 6402
x
166.26
=
41.6
MT
RB2
=
3048 6096
x x
3201 6402
x
166.26
=
41.6
MT
RA2
=
3048 6096
x x
3201 6402
x
166.26
=
41.6
MT
=
166.3
MT
Total
MT MT ( 183 ST)
0 Project WCR No
Prepared by Checked by Date
: Lifting of Rocker Arm : 0
6.0 VERTICAL REACTION AT PADEYES: OPTION CASE Vertical Reaction based on 75/25 load distribution method.
(As per SES 11.4)
6.1 SUPPORT LOADS *equations derived from sketch above Equ. 1
:
RA1
+
RB1
=
83.1
MT
Equ. 2
:
RB1
+
RB2
=
83.1
MT
Equ. 3
:
Equ. 2
-
Equ. 1,
RB2
-
RA1
=
0.0
6.2 LOAD CASE 1 - 75% OF LOAD ACROSS DIAGONAL A1 - B2 Equ. 4
Equ. 5
Equ. 5
RB1
:
:
into
into
RA1
+
Equ. 4
Equ. 2
Equ. 1
RA1
+
RB2
=
Equ. 3,
,
RB1
,
+
RA1
+
0.75 x W L =
RB1
+
+
RB2
0.75 x
166
=
125
MT
2 RB2
=
125
RB2
=
62.35
=
RB1
=
20.7825 MT
20.78
=
83.13
RA1
=
62.3475 MT
+ RA2
=
RA2
=
62.3475 MT 83.1
166 20.7825 MT
6.3 LOAD CASE 2 - 25% OF LOAD ACROSS DIAGONAL A1 - B2 Equ. 6
Equ. 7
Equ. 7
RB1
:
:
into
into
RA1
+
Equ. 6
Equ. 2
Equ. 1
RA1
+
RB2
0.25 x W L
=
0.25 x
=
41.57
Equ. 3,
,
RB1
,
+
=
RA1
RB1
+
+
+
RB2
166 MT
2 RB2
=
41.565
RB2
=
20.7825 MT
20.78
=
RB1
=
62.35
=
RA1
=
+ RA2
=
RA2
=
83.13 62.3475 MT 83.13 20.7825 MT 166 62.3475 MT
MT
: Azlan : 0 : 27-07-2009
0 Project WCR No
Prepared by Checked by Date
: Lifting of Rocker Arm : 0
: Azlan : 0 : 27-07-2009
7.0 TRUE SLING ANGLE
H = Vertical height
S1
= 8000
8000
S2
8000
A1
4620
= tan-1
8000 4620
= 59.99
S1 = 4620.0345 cos 59.99
S4
= tan-1
deg.
S2 =
= 9238 mm ( 30.3 ft )
8000
8000 4620
4620 cos 59.99
S4 =
deg.
= 9238 mm ( 30.3 ft )
4620
= tan-1
= 59.99
S3
8000
A2
B1
4620
B2
4620
8000 4620
4620 cos 59.99
= 59.99
= tan-1
deg.
S3 =
= 9238 mm ( 30.3 ft )
8000 4620
4620 cos 59.99
= 59.99
deg.
= 9238 mm ( 30.3 ft )
8.0 SUMMARY OF VERTICAL REACTION AT PADEYES. Padeye Base Case
Vertical Load Opt. Case 1
Opt. Case 2
Max. Load (MT)
SSL* (MT)
Required MBL (MT)
A1
41.57
62.35
20.78
62.35
72
288
B1
41.57
20.78
62.35
62.35
72
288
B2
41.57
62.35
20.78
62.35
72
288
A2
41.57
20.78
62.35
62.35
72
288
Total
166.26
166.26
166.26
249.39
288
1152
ATLAS OFFSHORE - TES Project : Lifting of Rocker Arm WCR No : 0
Prepared by Checked by Date
: : :
Azlan 0 27-07-2009
STRUCTURAL WEIGHT CALCULATION 1.0 For Padeye Design a) Roker Arm (Weighing) given wgt
=
162.0 MT
( Including
20.0 MT
Rigging Weight)
b) Actual Module 2 weight
=
142.0 MT
( Excluding 20.0 MT
Rigging Weight)
c) Contingencies of 10%
=
14.2 MT
d) Weight for Padeye Design
= Item b + Item c =
e) Load for Padeye Design Calculation
156.2
MT
= Static Sling Load (SSL) x 2.0
2.0 For Sling Design a) Roker Arm (Weighing) given wgt
=
162.0 MT
( Including
20.0 MT
Rigging Weight)
b) Actual Module 2 weight
=
142.0 MT
( Excluding 20.0 MT
Rigging Weight)
c) Contingencies of 10%
=
4.26 MT
d) Actual Rigging Weight
=
20 MT
d) Lift Weight for Sling Design
= Item b + Item c + Actual Rigging Weight =
e) Load for Sling Design Calculation
166.3
MT
= Static Sling Load (SSL) x 4.0