Codeware, Inc.
Houston, TX, USA
www.codeware.com
COMPRESS Pressure Vessel Design Calculations
Item: Split Stream Dearator
Vessel No: V-1234
Customer: Magaladon Oil Venture
Contract: C-45490-R56
Designer: John Doe
Date: April 1, 2001
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Deficiencies Summary
No deficiencies found.
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Nozzle Schedule
Nozzle Materials
Service Size
mark
Nozzle Impact Norm Fine Grain Pad Impact Norm Fine Grain Flange
N1 Nozzle #1 4" Sch 80 (XS) SA-106 B Smls pipe No No No SA-516 70 No No No WN A105 Class 300
N2 Nozzle #2 10" Sch 140 (XXS) SA-106 B Smls pipe No No No SA-516 70 No No No WN A105 Class 300
N3 Nozzle #3 10" Sch 140 (XXS) SA-106 B Smls pipe No No No SA-516 70 No No No WN A105 Class 300
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Nozzle Summary
Reinforcement
Shell
Nozzle OD t Req t Pad Corr A /A
n n A1? A2? a r
mark (in) (in) (in) (in) (%)
Nom t Design t User t Width t
pad
(in) (in) (in) (in) (in)
N1 4.50 0.3370 0.2370 Yes Yes 0.3750* 0.3749 1.0000 0.3750 0.0000 102.6
N2 10.75 1.0000 0.3650 Yes Yes 0.5000 0.4846 2.0000 0.5000 0.0000 100.0
N3 10.75 1.0000 0.3650 Yes Yes 0.5000 0.4846 2.0000 0.5000 0.0000 100.0
tn: Nozzle thickness
Req tn: Nozzle thickness required per UG-45/UG-16
Nom t: Vessel wall thickness
Design t: Required vessel wall thickness due to pressure + corrosion allowance per UG-37
User t: Local vessel wall thickness (near opening)
Aa : Area available per UG-37, governing condition
Ar: Area required per UG-37, governing condition
Corr: Corrosion allowance on nozzle wall
* Head minimum thickness after forming
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Pressure Summary
Pressure Summary for Chamber bounded by Ellipsoidal Head #2 and Ellipsoidal Head #1
P T T Total Corrosion
MAWP MAP MAEP e MDMT MDMT Impact
Identifier Design Design external Allowance
( psi) ( psi) ( psi) (°F) Exemption Test
( psi) (°F) (°F) (in)
Ellipsoidal Head #1 80.0 150.0 138.47 207.40 26.61 150.0 -20.0 Note 1 0.125 No
Straight Flange on Ellipsoidal Head
80.0 150.0 206.33 275.48 18.50 150.0 -39.8 Note 2 0.125 No
#1
Cylinder #1 80.0 150.0 206.33 275.48 18.50 150.0 -39.8 Note 2 0.125 No
Straight Flange on Ellipsoidal Head
80.0 150.0 206.33 275.48 18.50 150.0 -39.8 Note 2 0.125 No
#2
Ellipsoidal Head #2 80.0 150.0 138.47 207.40 26.61 150.0 -20.0 Note 1 0.125 No
Nozzle #1 (N1) 80.0 150.0 152.66 229.32 18.50 150.0 -29.3 Nozzle Note 3; Pad Note 4 0.000 No
Nozzle #2 (N2) 80.0 150.0 206.32 266.94 18.50 150.0 -39.8 Nozzle Note 5; Pad Note 6 0.000 No
Nozzle #3 (N3) 80.0 150.0 206.32 266.94 18.50 150.0 -39.8 Nozzle Note 5; Pad Note 6 0.000 No
Chamber design MDMT is -20.00°F
Chamber rated MDMT is -20.00°F @ 138.47 psi
Chamber MAWP hot & corroded is 138.47 psi @ 150.0°F
Chamber MAP cold & new is 207.40 psi @ 70.0°F
Chamber MAEP is 18.50 psi @ 150.0°F
Vacuum rings did not govern the external pressure rating.
Notes for MDMT Rating:
Note # Exemption Details
1. Material is impact test exempt per UG-20(f) UCS-66 governing thickness = 0.375 in
Material impact test exemption temperature from Fig UCS-66 Curve B = -7 °F
2. UCS-66 governing thickness = 0.5 in
Fig UCS-66.1 MDMT reduction = 32.8 °F, (coincident ratio = 0.6720209)
Nozzle impact test exemption temperature from Fig UCS-66 Curve B = -20 °F
3. UCS-66 governing thickness = 0.2949 in.
Fig UCS-66.1 MDMT reduction = 9.3 °F, (coincident ratio = 0.90724)
Pad impact test exemption temperature from Fig UCS-66 Curve B = -20 °F
4. UCS-66 governing thickness = 0.375 in.
Fig UCS-66.1 MDMT reduction = 9.3 °F, (coincident ratio = 0.90724)
Nozzle impact test exemption temperature from Fig UCS-66 Curve B = -7 °F
5. UCS-66 governing thickness = 0.5 in.
Fig UCS-66.1 MDMT reduction = 32.8 °F, (coincident ratio = 0.67203)
Pad impact test exemption temperature from Fig UCS-66 Curve B = -7 °F
6. UCS-66 governing thickness = 0.5 in.
Fig UCS-66.1 MDMT reduction = 32.8 °F, (coincident ratio = 0.67203)
Design notes are available on the Settings Summary page.
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Revision History
No. Date Operator Notes
0 2/ 5/2013 YUDI YULISTIONO New vessel created ASME Section VIII Division 1 [Build 6258]
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Settings Summary
COMPRESS Build 6258
Units: U.S. Customary
Datum Line Location: 0.00" from bottom seam
Design
ASME Section VIII Division 1, 2007 Edition
Design or Rating: Get Thickness from Pressure
Minimum thickness: 1/16" per UG-16(b)
Design for cold shut down only: No
Design for lethal service (full radiography required): No
Design nozzles for: Design P, find nozzle MAWP and MAP
Corrosion weight loss: 100% of theoretical loss
UG-23 Stress Increase: 1.20
Skirt/legs stress increase: 1.0
Minimum nozzle projection: 6.0000"
Juncture calculations for α > 30 only: Yes
Preheat P-No 1 Materials > 1.25" and <= 1.50" thick: No
Butt welds are tapered per Figure UCS-66.3(a).
Hydro/Pneumatic Test
1.3 times vessel
Shop Hydrotest Pressure:
MAWP
Test liquid specific gravity: 1.00
Maximum stress during test: 90% of yield
Required Marking - UG-116
UG-116 (e) Radiography: RT1
UG-116 (f) Postweld heat treatment: None
Code Cases\Interpretations
Use Code Case 2547: No
Apply interpretation VIII-1-83-66: Yes
Apply interpretation VIII-1-86-175: Yes
Apply interpretation VIII-1-83-115: Yes
Apply interpretation VIII-1-01-37: Yes
Disallow UG-20(f) exemptions: No
UG-22 Loadings
UG-22 (a) Internal or External Design Pressure : Yes
UG-22 (b) Weight of the vessel and normal contents under operating or test conditions: Yes
UG-22 (c) Superimposed static reactions from weight of attached equipment (external loads): No
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UG-22 (d)(2) Vessel supports such as lugs, rings, skirts, saddles and legs: Yes
UG-22 (f) Wind reactions: No
UG-22 (f) Seismic reactions: No
Note: UG-22 (b),(c) and (f) loads only considered when supports are present.
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Thickness Summary
Component Material Diameter Length Nominal t Design t Joint Load
Identifier (in) (in) (in) (in) E
Ellipsoidal Head #1 SA-516 70 73.00 OD 18.44 0.3750* 0.3129 1.0000 External
Straight Flange on Ellipsoidal Head #1 SA-516 70 73.00 OD 2.00 0.5000 0.4696 1.0000 External
Cylinder #1 SA-516 70 73.00 OD 168.00 0.5000 0.4696 1.0000 External
Straight Flange on Ellipsoidal Head #2 SA-516 70 73.00 OD 2.00 0.5000 0.4696 1.0000 External
Ellipsoidal Head #2 SA-516 70 73.00 OD 18.44 0.3750* 0.3129 1.0000 External
Support Skirt #1 SA-36 68.00/73.00 OD 40.00 0.3750 0.0028 0.5500 Weight
Nominal t: Vessel wall nominal thickness
Design t: Required vessel thickness due to governing loading + corrosion
Joint E: Longitudinal seam joint efficiency
* Head minimum thickness after forming
Load
internal: Circumferential stress due to internal pressure governs
external: External pressure governs
Wind: Combined longitudinal stress of pressure + weight + wind governs
Seismic: Combined longitudinal stress of pressure + weight + seismic governs
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