• Author / Uploaded
• Syafiq Halim

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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