CLIENT SIEMENS PAGE NO.
: 155
ITEM DESC: ANION REGENERATION TANK
JOB NO. : 12-0827 REV. NO. : 0
LIFTING LUG ANALYSIS FOR HORIZONTAL EQUIPMENT
f
h t
45 a
t1
w
l
ERECTION WEIGHT, P : 19620 N ( 2000 Kg)
SHOCK FACTOR, F : 2
NUMBER OF LUGS : 2
LIFTING LUG DIMENSIONS: PAD DIMENSION:
h = 100 a = 200 LENGTH(l): 300
b = 100 f = 60 WIDTH(w) : 200
di= 60 t1 = 15 THICK.(t): 15
LUG ORIENTATION (PHI) : 90 D= 30 (Diameter of Pin)
FORCES :
VERTICAL LIFTING FORCE, PV = P/4*F = 19620.0 N
NOM.CIRCUM.FORCE, Pc = PV*COS(PHI)+5%PV= 981.0 N
NOM.RADIAL.FORCE, Pr = PV*COS(90-PHI) = 19620.0 N
MATERIAL : OF DOUBLER PAD SA516 GR 70 SA-36
YIELD STRESS, Ys= : 248.29 N/mm^2 248.29 N/mm^2
MATERIAL : OF PIN SA-36
YIELD STRESS, Ys= 248.29 N/mm^2
ALLOWABLE STRESSES :
TENSILE STRESS,Sa=0.6*Ys : 148.974 N/mm^2
SHEAR STRESS, Ss=0.4*Ys : 99.316 N/mm^2
BEARING STRESS, Se=0.8*Ys : 198.632 N/mm^2
BENDING STRESS, Sb=0.66*Ys : 163.8714 N/mm^2
ALLOWABLE SHEAR STRESS FOR PIN Ss=0.4*Ys : 99.316 N/mm^2
INDUCED STRESSES :
TENSILE STRESS = PV/(t1*(b-di)) = 32.70 N/mm^2 <Sa HENCE SAFE
SHEAR STRESS = PV/(2*t1*(f-ri))= 21.80 N/mm^2 <Ss HENCE SAFE
BEARING STRESS = PV/(di*t1) = 21.80 N/mm^2 <Se HENCE SAFE
BENDING STRESS = M/Z=Pc*h/(t1*a^2/6)= 0.98 N/mm^2 <Sb HENCE SAFE
SHEAR STRESS ON PIN = PV/(PI/4*D^2)= 27.76 N/mm^2 <Sb HENCE SAFE
OF LUG
TOP GREAT ENGINEERING & MARINE
PTE LTD
PROJECT : DORAD 800 MW COMBINED
CYCLE POWER PLANT
b
CLIENT SIEMENS PAGE NO.: 156
ITEM DESC: ANION REGENERATION TANK
SERIAL NO. : JOB NO. : 12-0827 REV. NO. : 0
LIFTING LUG ANALYSIS FOR HORIZONTAL EQUIPMENT
(as per bednar ex.10.5 page-275)
STRENGTH OF WELD (LIFTING LUG TO PAD) :
FILLET WELD THROAT, L1 = 4.2 mm
FILLET LEG SIZE (WFp) = 6 mm
TOTAL WELD LENGTH (Wl) = 430 mm
LINEAR SECT.MOD.(Z)=2*a^2/6= 13333.33 mm^2
UNIT FORCES DUE TO CIRCUMFERENTIAL FORCES
BENDING(f1) = Pc*h/Z = 7.36 N/mm
SHEAR (f2) = Pc/Wl = 2.28 N/mm
UNIT FORCES DUE TO RADIAL FORCES
SHEAR (f3) = Pr/Wl = 45.63 N/mm
REQUIRED WELD SIZE DUE TO COMBINED LOAD
f = sqrt[(f1+f2)^2+f3^2] = 46.63 N/mm
WELD EFFICIENCY = 0.55 (E)
WELD STRENGTH(49%of 0.9Sy)= 109.50 N/mm^2 (Sw)
fw = Sw.E = 60.22 N/mm^2
REQUIRED THROAT SIZE (WFc)= f/fw = 0.77 mm
AS WFp>WFc, PROVIDED WELD FILLET SIZE IS SUFFICIENT
STRENGTH OF WELD (LIFTING LUG PAD TO SHELL) :
FILLET WELD THROAT, L1 = 4.242 mm
FILLET LEG SIZE (WFp) = 6 mm
TOTAL WELD LENGTH (Wl) = 1000 mm
LINEAR SECT.MOD.(Z)=2*l^2/6= 30000.00 mm^2
UNIT FORCES DUE TO CIRCUMFERENTIAL FORCES
BENDING(f1) = Pc*(h+t)/Z = 3.76 N/mm
SHEAR (f2) = Pc/Wl = 0.98 N/mm
UNIT FORCES DUE TO RADIAL FORCES
SHEAR (f3) = Pr/Wl = 19.62 N/mm
REQUIRED WELD SIZE DUE TO COMBINED LOAD
f = sqrt[(f1+f2)^2+f3^2] = 20.18 N/mm
WELD EFFICIENCY = 0.55
WELD STRENGTH (49%of 0.9Sy)= 109.50 N/mm^2
fw = Sw.E = 60.22 N/mm^2
REQUIRED THROAT SIZE (WFc)= f/fw = 0.34 mm
AS WFp>WFc, PROVIDED WELD FILLET SIZE IS SUFFICIENT
TOP GREAT ENGINEERING & MARINE
PTE LTD
PROJECT : DORAD 800 MW COMBINED
CYCLE POWER PLANT
