THICKNESS CALCULATIONS FOR SHELL
CLIENT: Usha Martin Limited DATE: 3/7/2022
12337
EQUIPMENT: BFG Boiler PO5:
THICKNESS OF STEAM DRUM THICKNESS OF BOILER
Descripiton WHB#1 WHB#2
Inside dia of shell, mm 1700
Material SA-516 Gr 70 SA-516 Gr 70 SA-516 Gr 70
Operating pressure, Kg/cm2,g 92
Operating temperature, 0C 301
Design pressure ,Kg/cm2,g 101.2
Design Temperature, 0C 329
Allowable stress at
1322
design pressure, Kg/cm2
Ligament Efficiency 1 1 1
Corrission allowance,mm 0.75 0.75 0.75
code allowance, mm 0 0 0
69.180
Provided thickness 70
THICKNESS OF TUBE CALCULATIONS
FOR EXTERNAL PRESSURE
MATERIAL SA-178 Gr C sec I
OPERATING PRESSURE,kg/cm2 14.5
OPERATING TEMPERATURE , oC 198
DESIGN PRESSURE, kg/cm2 15.95
DESIGN TEMPERATURE, oC 226
TUBE O.D, mm 60.3
MAXIMUM ALLOWABLE STRESS, kg/cm2 1202
CORROSION ALLOWANCE 0.75
THICKNESS 1.250
Minimum Thickness as per IBR Table Reg.579-C 3.12
PROVIDED THICKNESS 3.66
FOR INTERNAL PRESSURE
MATERIAL SA-178 Gr C sec I 14.5
OPERATING PRESSURE,kg/cm2 14.5
OPERATING TEMPERATURE , oC 198
DESIGN PRESSURE, kg/cm2 15.95
DESIGN TEMPERATURE, oC 226
TUBE O.D, mm 60.3
MAXIMUM ALLOWABLE STRESS, kg/cm2 1202
CORROSION ALLOWANCE 0.75
THICKNESS 1.147
Minimum Thickness as per IBR Table Reg.579-D 2.4
PROVIDED THICKNESS 3.66
ASME,PART D-PROPERTIES
COMPLETED UPTO PAGE 33
Nominal Product Min.Tensile Min.Yield Applic.and Max.Temp.Limits
Sl.No Composition Form Spec.No Type/Grade Strength,KSI Strength,KSI NP=Not applicable,SPT=Supports only
I III VIII-I
TUBES
1 Carbon Steel Wld.tube SA-178 A 47 26 1000 NP NP
Carbon Steel Wld.tube SA-178 A 47 26 1000 NP 1000
2 Carbon Steel Wld.tube SA-178 C 60 37 1000 NP NP
Carbon Steel Wld.tube SA-178 C 60 37 1000 700 NP
Carbon Steel Wld.tube SA-178 C 60 37 1000 NP 1000
Carbon Steel Wld.tube SA-178 D 70 40 1000 NP NP
Carbon Steel Wld.tube SA-178 D 70 40 1000 NP NP
Carbon Steel Wld.tube SA-178 D 70 40 1000 NP NP
3 Carbon Steel Smls.tube SA-179 47 26 NP NP 900
4 Carbon Steel Smls.tube SA-192 47 26 1000 NP 1000
5 Carbon Steel Smls.tube SA-210 A1 60 37 1000 700 1000
Carbon Steel Smls.tube SA-210 C 70 40 1000 700 1000
6 0.5 Cr - 0.5 Mo Smls.tube SA-213 T2 60 30 1000 700 1000
1.25 Cr - 0.5 Mo - Si Smls.tube SA-213 T11 60 30 1200 700 1200
1 Cr - 0.5 Mo Smls.tube SA-213 T12 60 32 1200 700 1200
2.25 Cr - 1 Mo Smls.tube SA-213 T22 60 30 1200 700 1200
9 Cr - 1 Mo -V Smls.tube SA-213 T91 85 60 1200 700 1200
PIPES
1 Carbon Steel Smls.Pipe SA-106 A 48 30 1000 700 1000
Carbon Steel Smls.Pipe SA-106 B 60 35 1000 700 1000
Carbon Steel Smls.Pipe SA-106 C 70 40 1000 700 1000
2 1.25 Cr - 0.5 Mo - Si Smls.Pipe SA-335 P11 60 30 1200 700 1200
1 Cr - 0.5 Mo Smls.Pipe SA-335 P12 60 32 1200 700 1200
2.25 Cr - 1 Mo Smls.Pipe SA-335 P22 60 30 1200 700 1200
9 Cr - 1 Mo -V Smls.Pipe SA-335 P91 85 60 1200 NP 1200
PLATES
1 Carbon Steel Plate SA-285 B 50 27 900 NP NP
Carbon Steel Plate SA-285 B 50 27 NP 700 900
Carbon Steel Plate SA-285 C 55 30 900 700 900
2 Carbon Steel Plate SA-516 55 55 30 850 700 1000
Carbon Steel Plate SA-516 60 60 32 850 700 1000
Carbon Steel Plate SA-516 65 65 35 850 700 1000
Carbon Steel Plate SA-516 70 70 38 850 700 1000
3 Carbon Steel Plate SA-515 60 60 32 1000 700 1000
Carbon Steel Plate SA-515 65 65 35 1000 7000 1000
Carbon Steel Plate SA-515 70 70 38 1000 700 1000
4 1.25 Cr - 0.5 Mo - Si Plate SA-387 11 60 35 1200 700 1200
1.25 Cr - 0.5 Mo - Si Plate SA-387 11 75 45 1200 700 1200
External pressure
chart No. Maximum Allowable stress,KSI(multiply by 1000 to obtain PSI),for Metal Temparature, 0F,
-20 to 100 150 200 250 300 400 500 600 650 700 750 800 850 900 950 1000 1050
CS-1 13.4 13.4 13.4 13.4 13.4 13.4 13.3 12.8 12.4 10.7 9.2 7.9 5.9 4 2.5
CS-1 11.4 11.4 11.4 11.4 11.4 11.4 11.3 10.9 10.5 9.1 7.8 6.7 5 3.4 2.1
CS-2 17.1 17.1 17.1 17.1 17.1 17.1 17.1 17.1 15.6 13 10.8 8.7 5 3.4 2.1
CS-2 17.1 17.1 17.1 17.1 17.1 17.1 17.1 17.1 15.6 13 10.8 8.7 5.9 4 2.5
CS-2 14.6 14.6 14.6 14.6 14.6 14.6 14.6 13.3 11.1 9.2 7.4 5 3.4 2.1
CS-2 20 20 20 20 20 20 19.8 18.3 14.8 12 9.3 6.7 4 2.5
CS-2 20 20 20 20 20 20 19.8 18.3 14.8 12 9.3 5.7 3.4 2.1
CS-2 17 17 17 17 17 17 16.8 15.5 12.6 10.2 7.9 5.7 3.4 2.1
CS-1 13.4 13.4 13.4 13.4 13.4 13.4 13.3 12.8 12.4 10.7 9.2 7.9 5.9
CS-1 13.4 13.4 13.4 13.4 13.4 13.4 13.3 12.8 12.4 10.7 9.2 7.9 5.9 4 2.5
CS-2 17.1 17.1 17.1 17.1 17.1 17.1 17.1 17.1 15.6 13 10.8 8.7 5.9 4 2.5
CS-2 20 20 20 20 20 20 19.8 18.3 14.8 12 9.3 6.7 4 2.5
CS-2 17.1 17.1 17.1 17.1 16.9 16.4 16.1 15.7 15.4 14.9 14.5 13.9 9.2 5.9
CS-2 17.1 17.1 17.1 16.8 16.2 15.7 15.4 15.1 14.8 14.4 14 13.6 9.3 6.3 4.2
CS-2 17.1 16.8 16.5 16.5 16.5 16.3 16 15.8 15.5 15.3 14.9 14.5 11.3 7.2 4.5
CS-2 17.1 17.1 16.6 16.6 16.6 16.6 16.6 16.6 16.6 16.6 16.6 13.6 10.8 8 5.7
CS-3(thk>3 mm) 24.3 24.3 24.3 24.2 24.1 23.7 23.4 22.9 22.2 21.3 20.3 19.1 17.8 16.3 12.9
CS-1 13.7 13.7 13.7 13.7 13.7 13.7 13.7 13.7 12.5 10.7 9.3 7.9 6.5 4.5 2.5
CS-2 17.1 17.1 17.1 17.1 17.1 17.1 17.1 17.1 15.6 13 10.8 8.7 5.9 4 2.5
CS-2 20 20 20 20 20 20 19.8 18.3 14.8 12 9.3 6.7 4 2.5
CS-2 17.1 17.1 17.1 16.8 16.2 15.7 15.4 15.1 14.8 14.4 14 13.6 9.3 6.3 4.2
CS-2 17.1 16.8 16.5 16.5 16.5 16.3 16 15.8 15.5 15.3 14.9 14.5 11.3 7.2 4.5
CS-2 17.1 17.1 17.1 16.6 16.6 16.6 16.6 16.6 16.6 16.6 16.6 16.6 13.6 10.8 8 5.7
CS-3(thk>3 mm) 24.3 24.3 24.3 24.2 24.1 23.7 23.4 22.9 22.2 21.3 20.3 19.1 17.8 16.3 12.9
CS-1 14.3 14.3 14.3 14.3 14.3 13.8 13.3 12.5 11 9.4 7.3 5
CS-1 14.3 14.3 14.3 14.3 14.3 14.3 13.8 13.3 12.5 11.2 9.6 8.1 5.9
CS-2 15.7 15.7 15.7 15.7 15.7 15.7 15.3 14.8 14.3 13 10.8 8.7 5.9
CS-2 15.7 15.7 15.7 15.7 15.7 15.7 15.3 14.8 14.3 13 10.8 8.7 5.9 4 2.5
CS-2 17.1 17.1 17.1 17.1 17.1 17.1 16.4 15.8 15.3 13 10.8 8.7 5.9 4 2.5
CS-2 18.6 18.6 18.6 18.6 18.6 18.6 17.9 17.3 16.7 13.9 11.4 8.7 5.9 4 2.5
CS-2 20 20 20 20 20 20 19.4 18.8 18.1 14.8 12 9.3 6.7 4 2.5
CS-2 17.1 17.1 17.1 17.1 17.1 17.1 16.4 15.8 15.3 13 10.8 8.7 5.9 4 2.5
CS-2 18.6 18.6 18.6 18.6 18.6 18.6 17.9 17.3 16.7 13.9 11.4 8.7 5.9 4 2.5
CS-2 20 20 20 20 20 20 19.4 18.8 18.1 14.8 12 9.3 6.7 4 2.5
CS-2 17.1 17.1 17.1 17.1 17.1 17.1 17.1 17.1 17.1 16.8 16.4 13.7 9.3 6.3 4.2
CS-3 21.1 21.4 21.4 21.4 21.4 21.4 21.4 21.4 21.4 21.4 20.2 13.7 9.3 6.3 4.2
PSI),for Metal Temparature, 0F,Not exceeding
1100 1150 1200 1250 1300 1350 1400 1450 1500 1550 1600 1650
2.8 1.9 1.2
2.8 1.8 1.1
3.8 2.4 1.4
9.6 7 4.3
2.8 1.9 1.2
2.8 1.8 1.1
3.8 2.4 1.4
9.6 7 4.3
2.8 1.9 1.2
2.8 1.9 1.2
