Lifting Lug

LIFTING LUG DESIGN CALCULATION tL rL

d k TL

htl hp

r

hc

Wp

b a

tp

Lp

Weight of vessel, We

1.1

2.0

3.0

4.0 4.1

Number of lifting lug, N

= = =

3,270 kg 32,079 N 2

LIFTING LUG Distance from base to T.L., htl Distance from pad to T.L. hp Distance, hc Distance k Lug radius, rL Diameter of hole, d Lug thickness, tL Length a Length b Radius r Pad length, Lp Pad width, Wp Pad thickness, tp

= = = = = = = = = = = = =

250 140 150 90 60 35 25 40 100 20 220 200 15

Shackle S.W.L Type of shackle Pin size, Dp

: 6.5 tons : Forged Shackles G 2130 = 25.40 mm

LIFTING LUG MATERIAL & MECHANICAL PROPERTIES Material used Specified yield stress, Sy Impact load factor, p

= = =

SA 36 248.21 N/mm² 4.00

ALLOWABLE STRESSES Allowable tensile stress, St.all ( = 0.6 Sy ) Allowable bearing stress, Sbr.all ( = 0.9 Sy ) Allowable bending stress, Sbn.all ( = 0.66 Sy ) Allowable shear stress, Ss.all ( = 0.4 Sy )

= = = =

148.93 223.39 163.82 99.28

LIFTING LUG DESIGN - VERTICAL LIFTING DESIGN LOAD Design load , Wt ( = p.We ) Design load per lug, W ( = Wt / N ) Vertical component force, Fy

= = =

128315 N 64157 N 64157 N

mm mm mm mm mm mm mm mm mm mm mm mm mm

N/mm² N/mm² N/mm² N/mm²

4.2 STRESS CHECK AT PIN HOLE (a) Tensile Stress Vertical component force, Fy Cross sectional area of lug eye, Ae ( = [ rL - d/2 ] x tL ) Tensile stress, St ( = Fy / Ae ) Since St < St.all, therefore the lifting lug size is

= 64157 N = 1063 mm² = 60.38 N/mm² satisfactory.

(b) Bearing Stress Vertical component force, Fy Cross sectional area of lug eye, Ae ( = Dp x tL ) Bearing stress, Sbr ( = Fy / Ae ) Since Sbr < Sbr.all,therefore the lifting lug size is

= 64157 N = 635 mm² = 101.04 N/mm² satisfactory.

(c) Shear Stress Vertical component force, Fy Cross sectional area of lug eye, Ae ( = 2.(rL-d/2).tL ) Shear stress, Ss ( = Fy / Ae ) Since Ss < Ss.all,therefore the lifting lug size is

= 64157 N = 2125 mm² = 30.19 N/mm² satisfactory.

5.0 5.1

5.2 5.3

6.0 6.1

6.2 6.3

DESIGN OF WELD SIZE AT LUG TO PAD JOINT GENERAL Weld leg , w Weld throat thickness, tr Fillet weld joint efficiency, E Allowable welding stress for steel grade 43 ( E-43 )

= = = =

15 mm 10.6 mm 0.6 125 N/mm²

CRITICAL WELD CROSS-SECTIONAL PROPERTIES Area of weld, Aw ( = 2 tr ( a + 2b + 0.5 p r ) )

=

5757 mm²

STRESS DUE TO FORCE Fy Component force, Fy Shear stress, Ssx ( = Fy / Aw ) Allowable welding stress, Sa ( = E.Sa ) Since Ssx < Sa, therefore the selected weld size is

= 64157 N = 11.14 N/mm² = 75.00 N/mm² satisfactory .

DESIGN OF WELD SIZE AT PAD TO SHELL JOINT GENERAL Weld leg , w Weld throat thickness, tr Fillet weld joint efficiency, E Allowable welding stress for steel grade 43 ( E-43 )

= = = =

15 mm 10.6 mm 0.6 125 N/mm²

CRITICAL WELD CROSS-SECTIONAL PROPERTIES Area of weld, Aw ( = 2 tr ( Wp + Lp ) )

=

8908 mm²

STRESS DUE TO FORCE Fy Component force, Fy Shear stress, Ssx ( = Fy / Aw ) Allowable welding stress, Sa ( = E.Sa ) Since Ssx < Sa, therefore the selected weld size is

= 64157 N = 7.20 N/mm² = 75.00 N/mm² satisfactory .

WEIGHT SUMMARY ITEM NO. : V-3104 CONDENSATE STABILISER WATER DRAIN DRUM ALL UNITS ARE IN KG UNLESS SPECIFIED GROUP NO.

A

1 2 3

PART NAME

SECTION / COMPONENT NO.1 NO.2 NO.3 HEAD SHELL HEAD

TOTAL

1120

1120 500 560

5

SHELL 2:1 SEMI ELLIPSOIDAL MANWAY :- INCLUDE BLIND FLANGE AND DAVIT ASSEMBLY NOZZLE :- INCLUDE BLIND FLANGE FOR NOZZLE E AND F SKIRT SUPPORT

B

6

INT. / EXT. NON REMOVABLE

0

34

0

34

C

7 8 9 10

INT. / EXT. REMOVABLE INSULATION FIRE PROOFING PLATFORM & LADDER

0 3 0 0

0 16 0 0

0 3 0 0

0 23 0 0

D

11 OPERATING LIQUID *

232

417

0

649

E

12 TESTING LIQUID

238

2846

238

3322

399 402 634 640 0.238

2544 2560 2977 5406 2.846

304.5 308 308 546 0.238

3247 3270 3919 6592 3.32

4

250

250 560

130

320

40

490 0 390

390

SUMMARY I II III VI V

NOTE :

ERECTION WEIGHT ( A + 5% CONTINGENCY + B ) EMPTY WEIGHT ( I + C ) OPERATING WEIGHT ( I + C + D ) HYDRO - TESTING WEIGHT ( I + C + E ) VOLUME [ m³ ]

* - Operating Liquid height, H for shell = + 366 mm from bottom tan line of vessel.

CENTER OF GRAVITY x plane Vessel ( Head ) ID thk Head N axis TL/TL Skirt height *

COG 1219 15 178 2438 1220

mm mm mm mm mm

y plane 3

1

* Skirt height taken from datum to bottom Tan Line of Vessel. datum point COG In y plane Part

Mass

1 Head - 1 250 2 Shell - 2 1120 3 Head - 3 250 BLIND 4 Skirt 390 5 Base ring 126 GUSSET 6 A 90 7 B 60 8 C 40 9 E 20 10 F 50 11 D1 30 12 D2 30 13 G1 20 14 G2 20 15 MW 560 16 other 1 58 17 other 2 Empty Condition Total Mass Total MX COG = Operating Condition a Fluid in head 1 b Fluid in shell 2 c Fluid in head 3

Mass + 5% m (kg) 263 1176 263

Neutral axis from datum y (mm) 992 2439 3836

m*y (kgmm) 260400 2868264 1006950

410 132

579 10

237101 1323

95 63 42 21 53 32 32 21 21 588 61

2958 4138 686 4138 4138 1426 2920 2520 1420 1770 3658

279531 260694 28812 86898 217245 44919 91980 52920 29820 1040760 222934

3270 6730551 2058

232 417 0

988 2439 4646

Total Mass Total MX COG = Testing Condition a Water in head 1 b Water in shell 2 c Water in head 3 Total Mass Total MX COG =

229265 1017063 0 3919 7976879 2036

238 2846 238

kg kgmm mm

988 2439 4646 6592 15012837 2278

kg kgmm mm

235144 6941394 1105748 kg kgmm mm

Basering and Skirt Weld Calculation SOD

g Bid Bod

General Data Skirt OD Skirt Thickness Basering OD,Bod Basering ID, Bid Basering Thickness Empty Weight Operating Weight Hydrotest Weight Max. wind load (from PVELite Wind Load Calc) Wind Area (from PVELite Wind Load Calc) Wind Pressure, qs = wind load/wind area Axial Force = max. weight*9.81 Axial Compressive Stress = Axial Force/Skirt area

= = = = = = = = = = = = =

1249 10 1471 1071 20 3270 3919 6592 1420.64 3.79E+06 0.000374839 64665.01111 1.6613

mm mm mm mm mm kg kg kg N mm2 N/mm2 N N/mm2

Vessel Vessel ID Vessel thk. Insulation thk. Vessel effective diameter ( Included 10% over diameter ), De Overall height, H Joint efficiency, E Material used for shell / skirt / base plate Material tensile stress, St Material yield stress, Sy Empty Condition Design temperature, Td Material allowable stress, Sa Empty weight, We COG measured from base, he Shear stress at base, V = qs*De*H Overturning moment at base, MT = V*he

= 1219.0 = 15.00 = 50.0 = 1483.9 = 3962.8 = 1.0 SA 516 Gr. 70 N / SA 36 = 399.0 = 248.2

mm mm mm mm mm N/mm2 N/mm2

= = = =

38.0 114.5 32076.2 2058 2204.2 4537148.0

o

Operating Condition Design temperature, Td Material allowable stress, Sa Internal design pressure, Pi External design pressure, Pe Operating weight, Wo COG measured from base, ho Shear stress at base, V = qs*De*H Overturning moment at base, MT = V*ho

= = = = = = = =

69.2 114.5 1.1084 0.0 38443.4 2036 2204.2 4486696.4

o

Testing Condition Design temperature, Td Material allowable stress, Sa

= =

C N/mm2 N mm N Nmm

C N/mm2 N/mm2 N/mm2 N mm N Nmm

o 233.0 C 2 114.5 N/mm

Internal design pressure, Pi External design pressure, Pe Hydro-testing weight, Wt COG measured from base, ht Shear stress at base, V = qs*De*H Overturning moment at base, MT = 0.33*V*ht

= = = = = =

Skirt Weld Checking Maximum overturning moment, MT Skirt OD Skirt used thk Allowable stress, Sa Weld leg size, g Joint efficiency for fillet weld, E Filler metal material Length of weld for ID skirt, l1 = p*SID Area of weld, Aw1 =0.5*g*l1 Length of weld for Skirt OD, l2 = p*SOD Area of weld, Aw2 =0.5*g*l2 Welding stress for steel grade 43 ( E-43 ), fw Allowable stress for weld, fw = E*fw Maximum vertical force, Q = Max(W+V) Maximum horizontal force, FL = max(V) Max. stress due to Q & FL = max(Q, FL)/(Aw1+Aw2) 2.1

= = = = = = : = = = = = = = = = <

4537148.0 1249 10.0 114.5 8.0 0.7070 E-43 3861.0 15444.1 3923.8 15695.4 125.0 88.4 66869.2 2204.2 2.1 88.4

2.069 0.0 64665.0 2278 2204.2 1656618.4

Nmm mm mm N/mm2 mm -

Dm t Rm

mm mm2 mm mm2 N/mm2 N/mm2 N N N/mm2 N/mm2

Thus, the selected skirt weld size is satifactory.

Okay

Basering Weld Checking Maximum overturning moment, MT Basering OD,Bod Basering ID, Bid Weld leg size, g Joint efficiency for fillet weld, E Filler metal material Length of weld, l1 = p*Bod Area of weld, Aw1 =0.5*g*l1 Length of weld, l2 = p*Bid Area of weld, Aw2 =0.5*g*l2 Welding stress for steel grade 43 ( E-43 ), fw Allowable stress for weld, fw = E*fw Maximum vertical force, Q = Max(W+V) Maximum horizontal force, FL = max(V)

= = = = = : = = = = = = = =

Max stress due to Q & FL = max(Q,FL)/(Aw1+Aw2) 1.7 Thus, the selected basering weld size is satifactory.

N/mm2 N/mm2 N mm N Nmm

= <

4537148.0 1471 1071 10.0 0.7070 E-43 4621.3 23106.4 3364.6 16823.2 125.0 88.4 66869.2 2204.2

Nmm mm mm mm mm mm2 mm mm2 N/mm2 N/mm2 N N

2 1.7 N/mm 2 88.4 N/mm

Okay

2438 Comp1 304.75 Comp2 1220 Comp3 and Skirt 3962.75

1239.00 10.00 619.50