The document provides information and equations for designing a shell vessel under internal pressure. It includes allowable stress values for different materials and services. Design parameters like vessel diameter, design pressure, temperature are provided. Equations are given for calculating minimum required thickness for different vessel elements like shell, heads, and sump considering circumferential and longitudinal stresses under internal pressure. Joint efficiency factors are also provided for different NDT methods.
The document provides information and equations for designing a shell vessel under internal pressure. It includes allowable stress values for different materials and services. Design parameters like vessel diameter, design pressure, temperature are provided. Equations are given for calculating minimum required thickness for different vessel elements like shell, heads, and sump considering circumferential and longitudinal stresses under internal pressure. Joint efficiency factors are also provided for different NDT methods.
The document provides information and equations for designing a shell vessel under internal pressure. It includes allowable stress values for different materials and services. Design parameters like vessel diameter, design pressure, temperature are provided. Equations are given for calculating minimum required thickness for different vessel elements like shell, heads, and sump considering circumferential and longitudinal stresses under internal pressure. Joint efficiency factors are also provided for different NDT methods.
The document provides information and equations for designing a shell vessel under internal pressure. It includes allowable stress values for different materials and services. Design parameters like vessel diameter, design pressure, temperature are provided. Equations are given for calculating minimum required thickness for different vessel elements like shell, heads, and sump considering circumferential and longitudinal stresses under internal pressure. Joint efficiency factors are also provided for different NDT methods.
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Design of Shell under Internal pressure
Always Edit this
lb/inch2 N/mm2
Inputs Vessel Inside Diameter (D) = 23.62 inch 600 mm
Sump Dia (d) = 12.75 inch 323.85 mm Design Pressure = 500 psi 3.448 bar Design Temp = 450 deg F 230 deg C Corrosion allowance = 0.125 inch 3.175 mm Service = Lethal Allowable stresses hence, S = 15000 psi 103.4214 N/mm2
1) Lethal service
Element Circum Long
Shell 0.402 0.217 Ellipsoidal head 0.395 Hemispherical head 0.198 Sump shell 0.217 0.117 Torispherical head 0.307 M= 1.44 Joint Efficency Radiography Type 1 Type 2 Full 1 0.9 Spot 0.85 0.8 None 0.7 0.65 Design of Shell under Internal pressure Always Edit this lb/inch2 N/mm2
Inputs Vessel Inside Diameter (D) = 23.62 inch 600 mm
Sump Dia (d) = 12.75 inch 323.85 mm Design Pressure = 500 psi 3.448 bar Design Temp = 450 deg F 230 deg C Corrosion allowance = 0.125 inch 3.175 mm Service = General Allowable stresses hence, S = 15000 psi 103.4214 N/mm2
1) Lethal service
Element Circum Long
Shell 0.402 0.244 Ellipsoidal head 0.395 Hemispherical head 0.198 Sump shell 0.256 0.162 Torispherical head 0.361 M= 1.44 Joint Efficency Radiography Type 1 Type 2 Full 1 0.9 Spot 0.85 0.8 None 0.7 0.65 Design of Shell under Internal pressure Always Edit this lb/inch2 N/mm2
Inputs Vessel Inside Diameter (D) = 23.62 inch 600 mm
Sump Dia (d) = 12.75 inch 323.85 mm Design Pressure = 500 psi 3.448 bar Design Temp = 450 deg F 230 deg C Corrosion allowance = 0.125 inch 3.175 mm Service = General Allowable stresses hence, S = 15000 psi 103.4214 N/mm2
1) Lethal service
Element Circum Long
Shell 0.474 0.300 Ellipsoidal head 0.465 Hemispherical head 0.283 Sump shell 0.256 0.162 Torispherical head 0.361 M= 1.44 Joint Efficency Radiography Type 1 Type 2 Full 1 0.9 Spot 0.85 0.8 None 0.7 0.65 Design of Shell under Internal pressure Always Edit this lb/inch2 N/mm2
Inputs Vessel Inside Diameter (D) = 23.62 inch 600 mm
Sump Dia (d) = 12.75 inch 323.85 mm Design Pressure = 500 psi 3.448 bar Design Temp = 450 deg F 230 deg C Corrosion allowance = 0.125 inch 3.175 mm Service = Steam Allowable stresses hence, S = 15000 psi 103.4214 N/mm2
1) Lethal service
Element Circum Long
Shell 0.402 0.217 Ellipsoidal head 0.395 Hemispherical head 0.198 Sump shell 0.217 0.117 Torispherical head 0.307 M= 1.44 Joint Efficency Radiography Type 1 Type 2 Full 1 0.9 Spot 0.85 0.8 None 0.7 0.65 Design of Shell under Internal pressure Always Edit this lb/inch2 N/mm2
Inputs Vessel Inside Diameter (D) = 23.62 inch 600 mm
Sump Dia (d) = 12.75 inch 323.85 mm Design Pressure = 500 psi 3.448 bar Design Temp = 450 deg F 230 deg C Corrosion allowance = 0.125 inch 3.175 mm Service = General Allowable stresses hence, S = 15000 psi 103.4214 N/mm2
1) Lethal service
Element Circum Long
Shell 0.402 0.244 Ellipsoidal head 0.395 Hemispherical head 0.198 Sump shell 0.217 0.162 Torispherical head 0.307 M= 1.44 Joint Efficency Radiography Type 1 Type 2 Full 1 0.9 Spot 0.85 0.8 None 0.7 0.65 Design of Shell under Internal pressure Always Edit this lb/inch2 N/mm2
Inputs Vessel Inside Diameter (D) = 78.74 inch 2000
External Pressure 14.5 psi 0.1 Design Pressure = 500 psi 3.448 Design Temp = 450 deg F 230 Length of shell = 236.22 inch 6000 Corrosion allowance = 0.125 inch 3.18 Service = General Allowable stresses hence, S = 15000 psi 103.4214 Modulus Elasticity = psi 1) Lethal service
Thk mm Element Circum Long Value Value
For Torispherical 34.0 Shell 1.339 0.724 D/2h L/r 59.2 6% Torispherical head 2.331 M= 1.77 16.66667 51.5 10% Torispherical head 2.028 M= 1.54 10 For Ellipsoidal 61.2 3:1 Ellipsoidal head 2.410 K= 1.83 3 33.4 2:1 Ellipsoidal head 1.317 K= 1 2 16.7 Hemispherical head 0.658 For Hemispherical
Design of Shell under External pressure
Compute Do/t value = 81.418394 inch
lways Edit this Joint Efficency Radiography Type 1 Type 2 mm Full 1 0.9 N/mm2 Spot 0.85 0.8 N/mm2 None 0.7 0.65 deg C mm mm
