Minimum Thickness
Content
MECHANICAL DESIGN CALCULATIONS FOR LOX BACKUP VAPORIZER
LIKE TO LIKE SHELL REPLACEMENT OF LOX 110-EX-062 A/B
PV Elite 2014 Licensee: DOHA PET. CONST. CO. LTD., QATAR
FileName : VEN-28442-LOX-5-12-0001 Rev
Internal Pressure Calculations :
Step:
3
2:10p Dec 10,2014
17
Element Thickness, Pressure, Diameter and Allowable Stress :
|
| Int. Press |
Nominal | Total Corr|
Element | Allowable |
From| To | + Liq. Hd | Thickness | Allowance |
Diameter | Stress(SE)|
|
|
MPa
|
mm
|
mm
|
mm
|
MPa
|
--------------------------------------------------------------------------10| 20|
0.1214 |
8.0000 |
... |
2134.0 |
115.15 |
20| 60|
0.1214 |
12.000 |
... |
2134.0 |
97.875 |
60| 90|
0.1214 |
6.0000 |
... |
2134.0 |
97.875 |
90| 100|
0.1214 |
12.000 |
... |
2134.0 |
97.875 |
100| 120|
0.1214 |
8.0000 |
... |
2134.0 |
115.15 |
Element Required Thickness and MAWP :
|
|
Design |
M.A.W.P. |
M.A.P. |
Minimum |
Required |
From| To |
Pressure | Corroded | New & Cold | Thickness | Thickness |
|
|
MPa
|
MPa
|
MPa
|
mm
|
mm
|
---------------------------------------------------------------------------10| 20|
0.10342 |
0.63285 |
0.65079 |
6.00000 |
1.50000 |
20| 60|
0.10342 |
1.08778 |
1.10572 |
12.0000 |
1.50000 |
60| 90|
0.10342 |
0.53367 |
0.55161 |
6.00000 |
1.50000 |
90| 100|
0.10342 |
1.08778 |
1.10572 |
12.0000 |
1.50000 |
100| 120|
0.10342 |
0.63285 |
0.65079 |
6.00000 |
1.50000 |
Minimum
0.103
0.552
MAWP: 0.103 MPa , limited by: DESIGN (user specified)
Internal Pressure Calculation Results :
Provided t
head min t
ASME Code, Section VIII, Division 1, 2013
Elliptical Head From 10 To 20 SA-240 304L at 110 °C
Longitudinal
Joint: Full Radiography per UW-11(a) Type 1
Circumferential Joint: Full Radiography per UW-11(a) Type 1
Material UNS Number:
S30403
Required Thickness due to Internal Pressure [tr]:
= (P*Do*Kcor)/(2*S*E+2*P*(Kcor-0.1)) per Appendix 1-4 (c)
= (0.121*2134.0000*1.000)/(2*115.15*1.00+2*0.121*(1.000-0.1))
= 1.1235 + 0.0000 = 1.1235 mm
Note: The thickness required was less than the Code Minimum, therefore
the Code Minimum value of 1.5000 mm per UG-16 will be used.
Max. Allowable Working Pressure at given Thickness, corroded [MAWP]:
Less Operating Hydrostatic Head Pressure of 0.018 MPa
= (2*S*E*t)/(Kcor*Do-2*t*(Kcor-0.1)) per Appendix 1-4 (c)
= (2*115.15*1.00*6.0000)/(1.000*2134.0000-2*6.0000*(1.00-0.1))
= 0.651 - 0.018 = 0.633 MPa
Maximum Allowable Pressure, New and Cold [MAPNC]:
shell min t
LIKE TO LIKE SHELL REPLACEMENT OF LOX 110-EX-062 A/B
PV Elite 2014 Licensee: DOHA PET. CONST. CO. LTD., QATAR
FileName : VEN-28442-LOX-5-12-0001 Rev
Internal Pressure Calculations :
Step:
3
2:10p Dec 10,2014
17
Element Thickness, Pressure, Diameter and Allowable Stress :
|
| Int. Press |
Nominal | Total Corr|
Element | Allowable |
From| To | + Liq. Hd | Thickness | Allowance |
Diameter | Stress(SE)|
|
|
MPa
|
mm
|
mm
|
mm
|
MPa
|
--------------------------------------------------------------------------10| 20|
0.1214 |
8.0000 |
... |
2134.0 |
115.15 |
20| 60|
0.1214 |
12.000 |
... |
2134.0 |
97.875 |
60| 90|
0.1214 |
6.0000 |
... |
2134.0 |
97.875 |
90| 100|
0.1214 |
12.000 |
... |
2134.0 |
97.875 |
100| 120|
0.1214 |
8.0000 |
... |
2134.0 |
115.15 |
Element Required Thickness and MAWP :
|
|
Design |
M.A.W.P. |
M.A.P. |
Minimum |
Required |
From| To |
Pressure | Corroded | New & Cold | Thickness | Thickness |
|
|
MPa
|
MPa
|
MPa
|
mm
|
mm
|
---------------------------------------------------------------------------10| 20|
0.10342 |
0.63285 |
0.65079 |
6.00000 |
1.50000 |
20| 60|
0.10342 |
1.08778 |
1.10572 |
12.0000 |
1.50000 |
60| 90|
0.10342 |
0.53367 |
0.55161 |
6.00000 |
1.50000 |
90| 100|
0.10342 |
1.08778 |
1.10572 |
12.0000 |
1.50000 |
100| 120|
0.10342 |
0.63285 |
0.65079 |
6.00000 |
1.50000 |
Minimum
0.103
0.552
MAWP: 0.103 MPa , limited by: DESIGN (user specified)
Internal Pressure Calculation Results :
Provided t
head min t
ASME Code, Section VIII, Division 1, 2013
Elliptical Head From 10 To 20 SA-240 304L at 110 °C
Longitudinal
Joint: Full Radiography per UW-11(a) Type 1
Circumferential Joint: Full Radiography per UW-11(a) Type 1
Material UNS Number:
S30403
Required Thickness due to Internal Pressure [tr]:
= (P*Do*Kcor)/(2*S*E+2*P*(Kcor-0.1)) per Appendix 1-4 (c)
= (0.121*2134.0000*1.000)/(2*115.15*1.00+2*0.121*(1.000-0.1))
= 1.1235 + 0.0000 = 1.1235 mm
Note: The thickness required was less than the Code Minimum, therefore
the Code Minimum value of 1.5000 mm per UG-16 will be used.
Max. Allowable Working Pressure at given Thickness, corroded [MAWP]:
Less Operating Hydrostatic Head Pressure of 0.018 MPa
= (2*S*E*t)/(Kcor*Do-2*t*(Kcor-0.1)) per Appendix 1-4 (c)
= (2*115.15*1.00*6.0000)/(1.000*2134.0000-2*6.0000*(1.00-0.1))
= 0.651 - 0.018 = 0.633 MPa
Maximum Allowable Pressure, New and Cold [MAPNC]:
shell min t
