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Codeware, Inc. Sarasota, FL, USA www.codeware.com COMPRESS Pressure Vessel Design Calculations Item: Vessel No: Customer: Contract: Designer: Date: You can edit this page by selecting Cover Page settings... in the report menu.

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Page 1: Codeware, Inc. - HS ENG · Deficiencies Summary Warnings Summary Warnings for Support Skirt It is recommended that the skirt thickness be at least D/400 (warning) The Skirt/Legs/Saddles

Codeware, Inc.

Sarasota, FL, USA

www.codeware.com

COMPRESS Pressure Vessel Design Calculations

Item: Vessel No: Customer: Contract: Designer:

Date:

You can edit this page by selecting Cover Page settings... in the report menu.

Page 2: Codeware, Inc. - HS ENG · Deficiencies Summary Warnings Summary Warnings for Support Skirt It is recommended that the skirt thickness be at least D/400 (warning) The Skirt/Legs/Saddles

Deficiencies Summary

Warnings Summary

Warnings for Support SkirtIt is recommended that the skirt thickness be at least D/400 (warning)The Skirt/Legs/Saddles Stress Increase factor is 1.20 (Set Mode Options dialog on the Calculationpage). AISC ASD supplement No. 1 (Dec. 17, 2001) paragraph A5 removed the stress increasefactor of 1/3. For the specified building code the recommended stress increase factor is 1.00.(warning)

Warnings for Top Ellipsoidal HeadExternal design pressure varies across this chamber. (warning)Check the following component(s): (warning)Shell (warning)

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Pressure Summary

Pressure Summary for Chamber bounded by Bottom Ellipsoidal Head and Top EllipsoidalHead

IdentifierP

Design( kPa)

T

Design( °C)

MAWP( kPa)

MAP( kPa)

MAEP( kPa)

Te

external( °C)

MDMT( °C)

MDMTExemption

ImpactTested

Top Ellipsoidal Head 343.23 168 411.49 418.78 N/A 145 -196 Note 1 No

Straight Flange on Top Ellipsoidal Head 343.23 168 483.04 491.59 N/A 145 -196 Note 2 No

Shell 343.23 168 1,188.31 1,224.27 287.28 145 -196 Note 3 No

Straight Flange on Bottom Ellipsoidal Head 343.23 168 468.15 491.59 N/A 145 -196 Note 2 No

Bottom Ellipsoidal Head 343.23 168 391.39 418.78 N/A 145 -196 Note 1 No

Jacket closure (Ring #2 in Group) N/A N/A N/A N/A 245.17 145 N/A N/A No

Jacket closure N/A N/A N/A N/A 245.17 145 N/A N/A No

Chamber design MDMT is -15 °CChamber rated MDMT is -196 °C @ 391.39 kPaChamber MAWP was used in the MDMT determination

Chamber MAWP hot & corroded is 391.39 kPa @ 168 °C

Chamber MAP cold & new is 418.78 kPa @ 17 °C

This pressure chamber is not designed for external pressure.

Notes for MDMT Rating:

Note # Exemption Details

1. Material Rated MDMT per UHA-51(d)(1)(a) = -196 °C

2. Rated MDMT per UHA-51(d)(1)(a) = -196 °C

3. Impact test exempt per UHA-51(g)(coincident ratio = 0.3303)

Design notes are available on the Settings Summary page.

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Revision History

No. Date Operator Notes

0 5/16/2012 YUIL New vessel created ASME Section VIII Division 1 [COMPRESS 2012Build 7200]

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Settings Summary

COMPRESS 2012 Build 7200

Units: SI

Datum Line Location: -30.00 mm from bottom seam

Design

ASME Section VIII Division 1, 2010 Edition, A11 Addenda Metric

Design or Rating: Get Thickness from PressureMinimum thickness: 1.5 mm per UG-16(b)Design for cold shut down only: NoDesign for lethal service (full radiography required): NoDesign nozzles for: Design P onlyCorrosion weight loss: 100% of theoretical lossUG-23 Stress Increase: 1.20Skirt/legs stress increase: 1.2Minimum nozzle projection: 150.01 mmJuncture calculations for α > 30 only: NoPreheat P-No 1 Materials > 1.25&#34 and <= 1.50" thick: YesUG-37(a) shell tr calculation considers longitudinal stress: NoButt welds are tapered per Figure UCS-66.3(a).

Hydro/Pneumatic Test

Shop Hydrotest Pressure: 1.3 times vessel MAWPTest liquid specific gravity: 1.00Maximum stress during test: 90% of yield

Required Marking - UG-116

UG-116(e) Radiography: RT1UG-116(f) Postweld heat treatment: None

Code Cases\Interpretations

Use Code Case 2547: NoApply interpretation VIII-1-83-66: YesApply interpretation VIII-1-86-175: YesApply interpretation VIII-1-83-115: Yes

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Apply interpretation VIII-1-01-37: YesNo UCS-66.1 MDMT reduction: NoNo UCS-68(c) MDMT reduction: NoDisallow UG-20(f) exemptions: No

UG-22 Loadings

UG-22(a) Internal or External Design Pressure : YesUG-22(b) Weight of the vessel and normal contents under operating or test conditions: YesUG-22(c) Superimposed static reactions from weight of attached equipment (external loads): YesUG-22(d)(2) Vessel supports such as lugs, rings, skirts, saddles and legs: YesUG-22(f) Wind reactions: YesUG-22(f) Seismic reactions: YesUG-22(j) Test pressure and coincident static head acting during the test: YesNote: UG-22(b),(c) and (f) loads only considered when supports are present.

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Thickness Summary

ComponentIdentifier

Material Diameter(mm)

Length(mm)

Nominal t(mm)

Design t(mm)

Total Corrosion(mm)

JointE

Load

Top Ellipsoidal Head SA-240 304L 2,800 ID 705.1 5.1* 4.25 0 1.00 Internal

Straight Flange on Top Ellipsoidal Head SA-240 304L 2,800 ID 30 6 4.26 0 1.00 Internal

Shell SA-240 304L 2,800 ID 2,840 15 13.47 0 1.00 External

Straight Flange on Bottom Ellipsoidal Head SA-240 304L 2,800 ID 30 6 4.45 0 1.00 Internal

Bottom Ellipsoidal Head SA-240 304L 2,800 ID 705.1 5.1* 4.5 0 1.00 Internal

Support Skirt SA-240 316L 2,800 ID 1,440 6 0.7 0 0.55 Seismic

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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Weight Summary

ComponentWeight ( kg) Contributed by Vessel Elements

MetalNew*

Metal

Corroded* Insulation InsulationSupports Lining Piping

+ Liquid

Operating Liquid Test Liquid

New Corroded New CorrodedTop Ellipsoidal Head 384.1 384.1 0 0 0 0 0 0 3,055.7 3,055.7

Shell 3,024.1 3,024.1 0 0 0 0 9,211.3 9,211.3 17,472.7 17,472.7

Bottom Ellipsoidal Head 384.1 384.1 0 0 0 0 2,322.3 2,322.3 3,055.7 3,055.7

Support Skirt 611.4 611.4 0 0 0 0 0 0 0 0

Skirt Base Ring 319.8 319.8 0 0 0 0 0 0 0 0

TOTAL: 4,723.5 4,723.5 0 0 0 0 11,533.7 11,533.7 23,584.1 23,584.1

* Shells with attached nozzles have weight reduced by material cut out for opening.

Component

Weight ( kg) Contributed by Attachments

Body Flanges Nozzles &Flanges Packed

BedsLadders &Platforms

Trays TraySupports

Rings &Clips

VerticalLoads

New Corroded New Corroded

Top Ellipsoidal Head 0 0 0 0 0 0 0 0 0 0

Shell 0 0 0 0 0 0 0 0 227.3 1,083

Bottom Ellipsoidal Head 0 0 0 0 0 0 0 0 0 0

Support Skirt 0 0 0 0 0 0 0 0 0 0

TOTAL: 0 0 0 0 0 0 0 0 227.3 1,083

Vessel operating weight, Corroded: 17,567 kgVessel operating weight, New: 17,567 kgVessel empty weight, Corroded: 6,034 kgVessel empty weight, New: 6,034 kgVessel test weight, New: 29,618 kgVessel test weight, Corroded: 29,618 kg

Vessel center of gravity location - from datum - lift condition

Vessel Lift Weight, New: 6,034 kgCenter of Gravity: 1,033.9 mm

Vessel Capacity

Vessel Capacity** (New): 23,604 litersVessel Capacity** (Corroded): 23,604 liters**The vessel capacity does not include volume of nozzle, piping or other attachments.

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Hydrostatic Test

Shop test pressure determination for Chamber bounded by Bottom Ellipsoidal Head andTop Ellipsoidal Head based on MAWP per UG-99(b)

Shop hydrostatic test gauge pressure is 517.81 kPa at 17 °C (the chamber MAWP = 391.39 kPa)

The shop test is performed with the vessel in the horizontal position.

Identifier

Localtest

pressurekPa

TestliquidstaticheadkPa

UG-99(b)stressratio

UG-99(b)pressure

factor

Stressduring

testMPa

Allowabletest

stressMPa

Stressexcessive?

Top Ellipsoidal Head (1) 545.24 27.44 1.0177 1.30 134.707 154.8 No

Straight Flange on TopEllipsoidal Head 545.24 27.44 1.0177 1.30 127.496 154.8 No

Shell 545.24 27.44 1.0177 1.30 51.162 154.8 No

Straight Flange onBottom Ellipsoidal Head 545.24 27.44 1.0177 1.30 127.496 154.8 No

Bottom Ellipsoidal Head 545.24 27.44 1.0177 1.30 134.707 154.8 No

Notes:(1) Top Ellipsoidal Head limits the UG-99(b) stress ratio.(2) The zero degree angular position is assumed to be up, and the test liquid height is assumed tothe top-most flange.

The field test condition has not been investigated for the Chamber bounded by Bottom EllipsoidalHead and Top Ellipsoidal Head .

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Vacuum Summary

Component Line of SupportElevation

above Datum(mm)

Length Le(mm)

Top Ellipsoidal Head - 3,605.1 N/A

- 1/3 depth of Top Ellipsoidal Head 3,133.33 N/A

Straight Flange on Top Ellipsoidal Head Top - 2,900 553.33

Straight Flange on Top Ellipsoidal Head Bottom - 2,870 553.33

Shell Top - 2,870 2,500

- Jacket closure (Ring #2 in Group) 2,580 1,526.67

- Jacket closure 80 1,406.67

Shell Bottom - 30 2,500

Straight Flange on Bottom Ellipsoidal Head Top - 30 313.33

Straight Flange on Bottom Ellipsoidal Head Bottom - 0 313.33

- 1/3 depth of Bottom Ellipsoidal Head -233.33 N/A

Bottom Ellipsoidal Head - -705.1 N/A

Notes

For main components, the listed value of 'Le' is the largest unsupported length for the component.

For Rings, the listed value of 'Le' is Ls per UG-29.

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Shell

ASME Section VIII Division 1, 2010 Edition, A11 Addenda Metric

Component: CylinderMaterial specification: SA-240 304L (II-D Metric p. 82, ln. 20)Impact test exempt per UHA-51(g)(coincident ratio = 0.3303)

Internal design pressure: P = 343.23 kPa @ 168 °CExternal design pressure: Pe = 245.17 kPa @ 145 °C

Static liquid head:

Ps = 14.67 kPa (SG = 0.76, Hs = 1,970 mm,Operating head)

Pth = 27.44 kPa (SG = 1, Hs = 2,800 mm, Horizontal testhead)

Corrosion allowance Inner C = 0 mm Outer C = 0 mm

Design MDMT = -15 °C No impact test performedRated MDMT = -196 °C Material is not normalized

Material is not produced to Fine Grain PracticePWHT is not performed

Radiography: Longitudinal joint - Full UW-11(a) Type 1Top circumferential joint - Full UW-11(a) Type 1Bottom circumferential joint - Full UW-11(a) Type 1

Estimated weight New = 3,024.1 kg corr = 3,024.1 kgCapacity New = 17,487.36 liters corr = 17,487.36 liters

ID = 2,800 mmLengthLc

= 2,840 mm

t = 15 mm

Design thickness, (at 168 °C) UG-27(c)(1)

t = P*R / (S*E - 0.60*P) + Corrosion= 357.9*1,400 / (113,000*1.00 - 0.60*357.9) + 0= 4.44 mm

Maximum allowable working pressure, (at 168 °C) UG-27(c)(1)

P = S*E*t / (R + 0.60*t) - Ps= 113,000*1.00*15 / (1,400 + 0.60*15) - 14.67= 1,188.31 kPa

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Maximum allowable pressure, (at 17 °C) UG-27(c)(1)

P = S*E*t / (R + 0.60*t)= 115,000*1.00*15 / (1,400 + 0.60*15)= 1,224.27 kPa

External Pressure, (Corroded & at 145 °C) UG-28(c)

L / Do = 2,500 / 2,830 = 0.8834Do / t = 2,830 / 13.47 = 210.1281From table G: A = 0.000503From table HA-3Metric: B = 38.6372 MPa

Pa = 4*B / (3*(Do / t))= 4*38,637.18 / (3*(2,830 / 13.47))= 245.17 kPa

Design thickness for external pressure Pa = 245.17 kPa

ta = t + Corrosion = 13.47 + 0 = 13.47mm

Maximum Allowable External Pressure, (Corroded & at 145 °C) UG-28(c)

L / Do = 2,500 / 2,830 = 0.8834Do / t = 2,830 / 15 = 188.6667From table G: A = 0.000601From table HA-3Metric: B = 40.6505 MPa

Pa = 4*B / (3*(Do / t))= 4*40,650.49 / (3*(2,830 / 15))= 287.28 kPa

% Forming strain - UHA-44(a)(2)(a)

EFE = (50*t / Rf)*(1 - Rf / Ro)= (50*15 / 1,407.5)*(1 - 1,407.5 / ϒ⊆)= 0.5329%

External Pressure + Weight + Wind Loading Check (Bergman, ASME paper 54-A-104)

Pv = W / (2*π*Rm) + M / (π*Rm2)

= 98.03*4,718.5 / (2*π*1,407.5) + 10000*24,370.8 / (π*1,407.52)= 91.4812 N/cm

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α = Pv / (Pe*Do)= 100*91.4812 / (245.17*2,830)= 0.0132

n = 6

m = 1.23 / (L / Do)2

= 1.23 / (2,500 / 2,830)2

= 1.5762

Ratio Pe = (n2 - 1 + m + m*α) / (n2 - 1 + m)= (62 - 1 + 1.5762 + 1.5762*0.0132) / (62 - 1 + 1.5762)= 1.0006

Ratio Pe * Pe ≤ MAEP design cylinder thickness is satisfactory.

External Pressure + Weight + Seismic Loading Check (Bergman, ASME paper 54-A-104)

Pv = (1 + VAccel)*W / (2*π*Rm) + M / (π*Rm2)

= 1.20*98.03*4,718.5 / (2*π*1,407.5) + 10000*36,317.8 / (π*1,407.52)= 121.1419 N/cm

α = Pv / (Pe*Do)= 100*121.1419 / (245.17*2,830)= 0.0175

n = 6

m = 1.23 / (L / Do)2

= 1.23 / (2,500 / 2,830)2

= 1.5762

Ratio Pe = (n2 - 1 + m + m*α) / (n2 - 1 + m)= (62 - 1 + 1.5762 + 1.5762*0.0175) / (62 - 1 + 1.5762)= 1.0008

Ratio Pe * Pe ≤ MAEP design cylinder thickness is satisfactory.

Design thickness = 13.47 mm

The governing condition is due to external pressure.

The cylinder thickness of 15 mm is adequate.

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Thickness Required Due to Pressure + External Loads

Condition Pressure P (kPa)

AllowableStressBeforeUG-23Stress

Increase (MPa)

Temperature (°C)

Corrosion C(mm) Load Req'd Thk Due

to Tension (mm)

Req'd Thk Dueto

Compression(mm)

St Sc

Operating, Hot & Corroded 343.23 113 44.18 168 0 Wind 1.78 1.7

Seismic 1.78 1.68

Operating, Hot & New 343.23 113 44.18 168 0 Wind 1.78 1.7

Seismic 1.78 1.68

Hot Shut Down, Corroded 0 113 44.18 168 0 Wind 0.01 0.17

Seismic 0 0.23

Hot Shut Down, New 0 113 44.18 168 0 Wind 0.01 0.17

Seismic 0 0.23

Empty, Corroded 0 115 63.58 21.11 0 Wind 0.01 0.12

Seismic 0.03 0.12

Empty, New 0 115 63.58 21.11 0 Wind 0.01 0.12

Seismic 0.03 0.12

Vacuum -245.17 115 47.17 145 0 Wind 3.02 3.19

Seismic 3.02 3.24

Hot Shut Down, Corroded,Weight & EccentricMoments Only

0 113 44.18 168 0 Weight 0.12 0.12

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Top Ellipsoidal Head

ASME Section VIII, Division 1, 2010 Edition, A11 Addenda Metric

Component: Ellipsoidal HeadMaterial Specification: SA-240 304L (II-D Metric p.82, ln. 20)Material Rated MDMT per UHA-51(d)(1)(a) = -196 °C

Internal design pressure: P = 343.23 kPa @ 168 °C

Static liquid head:

Ps= 0 kPa (SG=0.76, Hs=0 mm Operating head)Pth= 27.44 kPa (SG=1, Hs=2800 mm Horizontal test head)

Corrosion allowance: Inner C = 0 mm Outer C = 0 mm

Design MDMT = -15°C No impact test performedRated MDMT = -196°C Material is not normalized

Material is not produced to fine grain practicePWHT is not performedDo not Optimize MDMT / Find MAWP

Radiography: Category A joints - Full UW-11(a) Type 1 Head to shell seam - Full UW-11(a) Type 1

Estimatedweight*: new = 384.1 kg corr = 384.1 kg

Capacity*: new = 3,058.2 liters corr = 3,058.2 liters* includes straight flange

Inner diameter = 2800 mmMinimum head thickness = 5.1 mmHead ratio D/2h = 2 (new)Head ratio D/2h = 2 (corroded)Straight flange length Lsf = 30 mmNominal straight flange thickness tsf = 6 mmResults Summary

The governing condition is internal pressure.Minimum thickness per UG-16 = 1.5 mm + 0 mm = 1.5 mmDesign thickness due to internal pressure (t) = 4.25 mmMaximum allowable working pressure (MAWP) = 411.49 kPaMaximum allowable pressure (MAP) = 418.78 kPa

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Design thickness for internal pressure, (Corroded at 168 °C) UG-32(d)(1)

t = P*D / (2*S*E - 0.2*P) + Corrosion= 343.23*2,800 / (2*113,000.004*1 - 0.2*343.23) + 0= 4.25 mm

The head internal pressure design thickness is 4.25 mm.

Maximum allowable working pressure, (Corroded at 168 °C) UG-32(d)(1)

P = 2*S*E*t / (D + 0.2*t) - Ps= 2*113,000.004*1*5.1 / (2,800 +0.2*5.1) - 0= 411.49 kPa

The maximum allowable working pressure (MAWP) is 411.49 kPa.

Maximum allowable pressure, (New at 17 °C) UG-32(d)(1)

P = 2*S*E*t / (D + 0.2*t) - Ps= 2*114,999.995*1*5.1 / (2,800 +0.2*5.1) - 0= 418.78 kPa

The maximum allowable pressure (MAP) is 418.78 kPa.

% Forming strain - UHA-44(a)(2)(b)

EFE = (75*t / Rf)*(1 - Rf / Ro)= (75*6 / 479)*(1 - 479 / ϒ⊆)= 0.9395%

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Straight Flange on Top Ellipsoidal Head

ASME Section VIII Division 1, 2010 Edition, A11 Addenda Metric

Component: Straight FlangeMaterial specification: SA-240 304L (II-D Metric p. 82, ln. 20)Rated MDMT per UHA-51(d)(1)(a) = -196 °C

Internal design pressure: P = 343.23 kPa @ 168 °C

Static liquid head:

Ps = 0 kPa (SG = 0.76, Hs = 0 mm,Operating head)

Pth = 27.44 kPa (SG = 1, Hs = 2,800 mm, Horizontal testhead)

Corrosion allowance Inner C = 0 mm Outer C = 0 mm

Design MDMT = -15 °C No impact test performedRated MDMT = -196 °C Material is not normalized

Material is not produced to Fine Grain PracticePWHT is not performed

Radiography: Longitudinal joint - Full UW-11(a) Type 1Circumferential joint - Full UW-11(a) Type 1

Estimated weight New = 12.7 kg corr = 12.7 kgCapacity New = 184.73 liters corr = 184.73 liters

ID = 2,800 mmLengthLc

= 30 mm

t = 6 mm

Design thickness, (at 168 °C) UG-27(c)(1)

t = P*R / (S*E - 0.60*P) + Corrosion= 343.23*1,400 / (113,000*1.00 - 0.60*343.23) + 0= 4.26 mm

Maximum allowable working pressure, (at 168 °C) UG-27(c)(1)

P = S*E*t / (R + 0.60*t) - Ps= 113,000*1.00*6 / (1,400 + 0.60*6) - 0= 483.04 kPa

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Maximum allowable pressure, (at 17 °C) UG-27(c)(1)

P = S*E*t / (R + 0.60*t)= 115,000*1.00*6 / (1,400 + 0.60*6)= 491.59 kPa

% Forming strain - UHA-44(a)(2)(a)

EFE = (50*t / Rf)*(1 - Rf / Ro)= (50*6 / 1,403)*(1 - 1,403 / ϒ⊆)= 0.2138%

Design thickness = 4.26 mm

The governing condition is due to internal pressure.

The cylinder thickness of 6 mm is adequate.

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Thickness Required Due to Pressure + External Loads

Condition Pressure P (kPa)

AllowableStressBeforeUG-23Stress

Increase (MPa)

Temperature (°C)

Corrosion C(mm) Load Req'd Thk Due

to Tension (mm)

Req'd Thk Dueto

Compression(mm)

St Sc

Operating, Hot & Corroded 343.23 113 37.46 168 0 Wind 1.77 1.77

Seismic 1.77 1.77

Operating, Hot & New 343.23 113 37.46 168 0 Wind 1.77 1.77

Seismic 1.77 1.77

Hot Shut Down, Corroded 0 113 37.46 168 0 Wind 0 0.01

Seismic 0.01 0.01

Hot Shut Down, New 0 113 37.46 168 0 Wind 0 0.01

Seismic 0.01 0.01

Empty, Corroded 0 115 51.95 21.11 0 Wind 0 0.01

Seismic 0.01 0.01

Empty, New 0 115 51.95 21.11 0 Wind 0 0.01

Seismic 0.01 0.01

Hot Shut Down, Corroded,Weight & EccentricMoments Only

0 113 37.46 168 0 Weight 0.01 0.01

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Straight Flange on Bottom Ellipsoidal Head

ASME Section VIII Division 1, 2010 Edition, A11 Addenda Metric

Component: Straight FlangeMaterial specification: SA-240 304L (II-D Metric p. 82, ln. 20)Rated MDMT per UHA-51(d)(1)(a) = -196 °C

Internal design pressure: P = 343.23 kPa @ 168 °C

Static liquid head:

Ps = 14.89 kPa (SG = 0.76, Hs = 2,000 mm,Operating head)

Pth = 27.44 kPa (SG = 1, Hs = 2,800 mm, Horizontal testhead)

Corrosion allowance Inner C = 0 mm Outer C = 0 mm

Design MDMT = -15 °C No impact test performedRated MDMT = -196 °C Material is not normalized

Material is not produced to Fine Grain PracticePWHT is not performed

Radiography: Longitudinal joint - Full UW-11(a) Type 1Circumferential joint - Full UW-11(a) Type 1

Estimated weight New = 12.7 kg corr = 12.7 kgCapacity New = 184.73 liters corr = 184.73 liters

ID = 2,800 mmLengthLc

= 30 mm

t = 6 mm

Design thickness, (at 168 °C) UG-27(c)(1)

t = P*R / (S*E - 0.60*P) + Corrosion= 358.13*1,400 / (113,000*1.00 - 0.60*358.13) + 0= 4.45 mm

Maximum allowable working pressure, (at 168 °C) UG-27(c)(1)

P = S*E*t / (R + 0.60*t) - Ps= 113,000*1.00*6 / (1,400 + 0.60*6) - 14.89= 468.15 kPa

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Maximum allowable pressure, (at 17 °C) UG-27(c)(1)

P = S*E*t / (R + 0.60*t)= 115,000*1.00*6 / (1,400 + 0.60*6)= 491.59 kPa

% Forming strain - UHA-44(a)(2)(a)

EFE = (50*t / Rf)*(1 - Rf / Ro)= (50*6 / 1,403)*(1 - 1,403 / ϒ⊆)= 0.2138%

Design thickness = 4.45 mm

The governing condition is due to internal pressure.

The cylinder thickness of 6 mm is adequate.

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Thickness Required Due to Pressure + External Loads

Condition Pressure P (kPa)

AllowableStressBeforeUG-23Stress

Increase (MPa)

Temperature (°C)

Corrosion C(mm) Load Req'd Thk Due

to Tension (mm)

Req'd Thk Dueto

Compression(mm)

St Sc

Operating, Hot & Corroded 343.23 113 37.46 168 0 Wind 1.78 1.7

Seismic 1.78 1.68

Operating, Hot & New 343.23 113 37.46 168 0 Wind 1.78 1.7

Seismic 1.78 1.68

Hot Shut Down, Corroded 0 113 37.46 168 0 Wind 0.01 0.21

Seismic 0.01 0.27

Hot Shut Down, New 0 113 37.46 168 0 Wind 0.01 0.21

Seismic 0.01 0.27

Empty, Corroded 0 115 51.95 21.11 0 Wind 0.01 0.15

Seismic 0.04 0.15

Empty, New 0 115 51.95 21.11 0 Wind 0.01 0.15

Seismic 0.04 0.15

Hot Shut Down, Corroded,Weight & EccentricMoments Only

0 113 37.46 168 0 Weight 0.14 0.14

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Bottom Ellipsoidal Head

ASME Section VIII, Division 1, 2010 Edition, A11 Addenda Metric

Component: Ellipsoidal HeadMaterial Specification: SA-240 304L (II-D Metric p.82, ln. 20)Material Rated MDMT per UHA-51(d)(1)(a) = -196 °C

Internal design pressure: P = 343.23 kPa @ 168 °C

Static liquid head:

Ps= 20.11 kPa (SG=0.76, Hs=2700 mm Operating head)Pth= 27.44 kPa (SG=1, Hs=2800 mm Horizontal test head)

Corrosion allowance: Inner C = 0 mm Outer C = 0 mm

Design MDMT = -15°C No impact test performedRated MDMT = -196°C Material is not normalized

Material is not produced to fine grain practicePWHT is not performedDo not Optimize MDMT / Find MAWP

Radiography: Category A joints - Full UW-11(a) Type 1 Head to shell seam - Full UW-11(a) Type 1

Estimatedweight*: new = 384.1 kg corr = 384.1 kg

Capacity*: new = 3,058.2 liters corr = 3,058.2 liters* includes straight flange

Inner diameter = 2800 mmMinimum head thickness = 5.1 mmHead ratio D/2h = 2 (new)Head ratio D/2h = 2 (corroded)Straight flange length Lsf = 30 mmNominal straight flange thickness tsf = 6 mmResults Summary

The governing condition is internal pressure.Minimum thickness per UG-16 = 1.5 mm + 0 mm = 1.5 mmDesign thickness due to internal pressure (t) = 4.5 mmMaximum allowable working pressure (MAWP) = 391.39 kPaMaximum allowable pressure (MAP) = 418.78 kPa

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Design thickness for internal pressure, (Corroded at 168 °C) UG-32(d)(1)

t = P*D / (2*S*E - 0.2*P) + Corrosion= 363.34*2,800 / (2*113,000.004*1 - 0.2*363.34) + 0= 4.5 mm

The head internal pressure design thickness is 4.5 mm.

Maximum allowable working pressure, (Corroded at 168 °C) UG-32(d)(1)

P = 2*S*E*t / (D + 0.2*t) - Ps= 2*113,000.004*1*5.1 / (2,800 +0.2*5.1) - 20.11= 391.39 kPa

The maximum allowable working pressure (MAWP) is 391.39 kPa.

Maximum allowable pressure, (New at 17 °C) UG-32(d)(1)

P = 2*S*E*t / (D + 0.2*t) - Ps= 2*114,999.995*1*5.1 / (2,800 +0.2*5.1) - 0= 418.78 kPa

The maximum allowable pressure (MAP) is 418.78 kPa.

% Forming strain - UHA-44(a)(2)(b)

EFE = (75*t / Rf)*(1 - Rf / Ro)= (75*6 / 479)*(1 - 479 / ϒ⊆)= 0.9395%

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Jacket closure

Stiffener ring calculations per UG-29(a)

Ring type: Flat barRing description: 12t*130wRing material: SA-285 C (II-D Metric p. 6, ln. 42)External pressure: 245.17 kPaRing is located: outside the vesselDistance from ring neutral axis to datum: 80 mmRing corrosion allowance: 0 mmDistance to previous support: 2,500 mmDistance to next support: 313.33 mm

L / Do = 2,500 / 2,830 = 0.8834Do / t = 2,830 / 13.47 = 210.1226From Table G: A = 0.000503

From Table HA-3 Metric: B = 38.638MPa

Pa = 4*B / (3*(Do / t))= 4*38.638 / (3*(2,830 / 13.47))= 0.2452 MPa

B = 0.75*P*Do / (t + As / Ls)= 0.75*245.17*2,830 / (13.47 + 1,560 / 1,406.67) / 1000= 35.7 MPa

From Table CS-2 Metric: A = 0.00036015 (ring, 145°C)From Table HA-3 Metric: A = 0.00045692 (shell, 145°C)

Is' = [Do2*Ls*(t + As / Ls)*A] / 10.9

= [2,8302*1,406.67*(13.47 + 1,560 / 1,406.67)*0.00045692] / 10.9 / 10000= 688.37 cm4

I' for the composite corroded shell-ring cross section is 788.13 cm4

As I' >= Is' a 12t*130w stiffener is adequate for an external pressure of 245.17 kPa.

Check the stiffener ring attachment welds per UG-30

Fillet weld is: Continuous both sides

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Fillet weld leg size: 6 mmVessel thickness at weld location, new: 15 mmVessel corrosion allowance at weld location: 0 mmStiffener thickness at weld location: 12 mm

Per UG-30(f)(1) the minimum attachment weld size is 6 mm

** The fillet weld size of 6 mm is not adequate per UG-30(f)(1). **

Radial pressure load, P*Ls = 245.17*1,406.67 / 100 = 3,448.67 N/cmRadial shear load, V = 0.01*P*Ls*Do = 0.01*245.17 / 1000*1,406.67*2,830 = 9,759.74 NFirst moment of area, Q = 34*2.28 = 77.5251 cm3

Weld shear flow, q = V*Q / I' = 960.0238 N/cmCombined weld load, fw = Sqr(3,448.67112 + 960.02382) = 3,579.8 N/cm

Allowable weld stress per UW-18(d) Sw = 0.55*S = 0.55*108 = 59.4 MPa

Fillet weld size required to resist radial pressure and shear

= fw*(dweld segment

+ dtoe

) / (Sw*dweld total

) + corrosion= 3,579.8*(25.4 + 0) / (10*59.4*50.8) + 0= 3.01 mm

The fillet weld size of 6 mm is adequate to resist radial pressure and shear.

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Jacket closure (Ring #2 in Group)

Stiffener ring calculations per UG-29(a)

Ring type: Flat barRing description: 12t*130wRing material: SA-285 C (II-D Metric p. 6, ln. 42)External pressure: 245.17 kPaRing is located: outside the vesselDistance from ring neutral axis to datum: 2,580 mmRing corrosion allowance: 0 mmDistance to previous support: 553.33 mmDistance to next support: 2,500 mm

L / Do = 2,500 / 2,830 = 0.8834Do / t = 2,830 / 13.47 = 210.1226From Table G: A = 0.000503

From Table HA-3 Metric: B = 38.638MPa

Pa = 4*B / (3*(Do / t))= 4*38.638 / (3*(2,830 / 13.47))= 0.2452 MPa

B = 0.75*P*Do / (t + As / Ls)= 0.75*245.17*2,830 / (13.47 + 1,560 / 1,526.67) / 1000= 35.915 MPa

From Table CS-2 Metric: A = 0.00036230 (ring, 145°C)From Table HA-3 Metric: A = 0.00046558 (shell, 145°C)

Is' = [Do2*Ls*(t + As / Ls)*A] / 10.9

= [2,8302*1,526.67*(13.47 + 1,560 / 1,526.67)*0.00046558] / 10.9 / 10000= 756.7 cm4

I' for the composite corroded shell-ring cross section is 788.13 cm4

As I' >= Is' a 12t*130w stiffener is adequate for an external pressure of 245.17 kPa.

Check the stiffener ring attachment welds per UG-30

Fillet weld is: Continuous both sides

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Fillet weld leg size: 6 mmVessel thickness at weld location, new: 15 mmVessel corrosion allowance at weld location: 0 mmStiffener thickness at weld location: 12 mm

Per UG-30(f)(1) the minimum attachment weld size is 6 mm

** The fillet weld size of 6 mm is not adequate per UG-30(f)(1). **

Radial pressure load, P*Ls = 245.17*1,526.67 / 100 = 3,742.87 N/cmRadial shear load, V = 0.01*P*Ls*Do = 0.01*245.17 / 1000*1,526.67*2,830 = 10,592.33 NFirst moment of area, Q = 34*2.28 = 77.5251 cm3

Weld shear flow, q = V*Q / I' = 1,041.922 N/cmCombined weld load, fw = Sqr(3,742.87062 + 1,041.92162) = 3,885.19 N/cm

Allowable weld stress per UW-18(d) Sw = 0.55*S = 0.55*108 = 59.4 MPa

Fillet weld size required to resist radial pressure and shear

= fw*(dweld segment

+ dtoe

) / (Sw*dweld total

) + corrosion= 3,885.19*(25.4 + 0) / (10*59.4*50.8) + 0= 3.27 mm

The fillet weld size of 6 mm is adequate to resist radial pressure and shear.

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Skirt Base Ring

Base configuration: double base plateFoundation compressive strength: 11.432 MPaConcrete ultimate 28-day strength: 20.684 MPaAnchor bolt material: A 307-BAnchor bolt allowable stress, Sb: 102.97 MPaBolt circle, BC: 2,922 mmAnchor bolt corrosion allowance (applied to root radius): 0 mmAnchor bolt clearance: 16 mmBase plate material: A 285-CBase plate allowable stress, Sp: 137.895 MPaBase plate inner diameter, Di: 2,702 mmBase plate outer diameter, Do: 2,950 mmBase plate thickness, tb: 22 mmGusset separation, w: 80 mmGusset height, h: 212 mmGusset thickness, tg: 10 mmCompression ring width: 100 mmCompression ring thickness, tc: 16 mmInitial bolt preload: 0 % (0 MPa)Number of bolts, N: 8Bolt size and type: 24 mmBolt root area (corroded), Ab: 3.3826 cm2

Diameter of anchor bolt holes, db: 40 mm

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Load Vesselcondition

Base M(N-m)

W(kg)

Requiredbolt area

(cm2)

trBase(mm)

Foundationbearingstress(MPa)

tr compring

(mm)

trgusset(mm)

Wind operating, corroded 50,404.1 17,567.4 0 4.76 0.2255 0 0

Wind operating, new 50,404.1 17,567.4 0 4.76 0.2255 0 0

Wind empty, corroded 50,404.1 6,033.7 0.4066 4.61 0.2111 3.47 3.96

Wind empty, new 50,404.1 6,033.7 0.4066 4.61 0.2111 3.47 3.96

Seismic operating, corroded 81,214.3 17,567.4 0 5.48 0.2983 0 0

Seismic operating, new 81,214.3 17,567.4 0 5.48 0.2983 0 0

Seismic empty, corroded 32,392.8 6,033.7 0 3.3 0.1085 0 0

Seismic empty, new 32,392.8 6,033.7 0 3.3 0.1085 0 0

Anchor bolt load (governing)

P = -0.6*W / N + 4 * M / (N*BC)= -0.6*59,170.82 / 8 + 4 * 50,404.1 / (8*2.922)= 4,187.12 N

Required area per bolt = P / Sb = 0.4066 cm2

The area provided (3.3826 cm2) by the specified anchor bolt is adequate.

Foundation bearing stress (governing)

Ac = pi*(Do2 - Di

2) / 4 - N*pi*db2 / 4

= π*(2952 - 270.22) / 4 - 8*π*42 / 4= 10,908.36 cm2

Ic = π*(Do4 - Di

4) / 64= π*(2954 - 270.24) / 64= 1.1011E+08 cm4

fc = N*Ab*Preload / Ac + (1 + VAccel)*W / Ac + M / 2*Do / Ic= 8*3.3826*0 / (10,908.36) + (1 + 0.2)*172,277.34 / (100*10,908.36) + 81,214.3 / 2*2,950 /(10*1.1011E+08)= 0.298 MPa

As fc <= 11.432 MPa the base plate width is satisfactory.

Base plate required thickness (governing)

From Brownell & Young, Table 10.3:, l / b = 0.0659

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Mx = 0.0015*0.298*1,047.472 = 504 N

My = -0.4858*0.298*692 = -689.9 N

tr = (6*Mmax / Sp)0.5

= (6*689.91 / 137.895)0.5

= 5.48 mm

The base plate thickness is satisfactory.

Check the compression ring for bolt load (Jawad & Farr equation 12.13)

tcr = (3.91*F / (Sy*(2*b / w+w / (2*l)-db*(2 / w+1 / (2*l)))))0.5

= (3.91*1,190.06 / (206.822*(2*100 / 80+80 / (2*54.99)-40*(2 / 80+1 / (2*54.99)))))0.5

= 3.47 mm

The compression ring thickness is satisfactory.

Check gusset plate thickness (Bednar chapter 4.3)

Radius of gyration of gusset

r = 0.289*tg= 0.289*10= 2.89 mm

Cross sectional area of one gusset

Ag = tg*(b - 0.25*25.41)= 0.01*10*(69 - 0.25*25.41)= 6.265 cm2

Gusset allowable stress

Sa = 0.006895*(17000 - 0.485*(h / r)2)= 117.215 - 0.0033*(212 / 2.89)2

= 99.217 MPa

Gusset axial stress due to bolt load

Sg = F / (2 * Ag)= 1,190.06 / (100*2 * 6.265)= 0.95 MPa

The gusset plate thickness is satisfactory.

Check skirt thickness for bolt load reaction (Brownell & Young eq. 10.59)

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t = 1.76*(F*l / (Mb*hc*Ss))2 / 3*(ODs / 2)1 / 3

= 1.76*(1,190.06*55 / (1,104.27*250*172.5))2 / 3*(2,812 / 2)1 / 3

= 0.24 mm

The skirt thickness is satisfactory.

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Support Skirt

Material: SA-240 316L (II-D Metric p. 66, ln. 35)Design temperature, operating: 158 °CInner diameter at top, new: 2,800mmInner diameter at bottom, new: 2,800mmOverall length (includes base ring thickness): 1,440mmCorrosion allowance inside: 0 mmCorrosion allowance outside: 0 mmWeld joint efficiency top: 0.55Weld joint efficiency bottom: 0.8Nominal thickness, new: 6 mmSkirt is attached to: Bottom Ellipsoidal HeadSkirt attachment offset: 90 mm down from the top seam

Skirt design thickness, largest of the following + corrosion = 0.7 mm

The governing condition is due to earthquake, compressive stress at the base, operating &corroded.

The skirt thickness of 6 mm is adequate.

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LoadingVessel

Condition(Stress)

GoverningSkirt

Location

Temperature(°C)

AllowableStress(MPa)

CalculatedStress/E

(MPa)

Requiredthickness

(mm)

Wind operating, corroded (+) top 158 51.96 -1.16 0.13

Wind operating, corroded (-) bottom 158 51.96 4.56 0.53

Wind empty, corroded (+) bottom 17 138 0.9 0.04

Wind empty, corroded (-) bottom 17 61.77 2.42 0.23

Seismic operating, corroded (+) top 158 51.96 -2.06 0.24

Seismic operating, corroded (-) bottom 158 51.96 6.03 0.7

Seismic empty, corroded (+) top 17 61.77 -0.47 0.05

Seismic empty, corroded (-) bottom 17 61.77 2.14 0.21

Loading due to earthquake, operating & corroded

Tensile side

Required thickness, tensile stress at base:

t = -W / (π*D*St*E) + 4*M / (π*D2*St*E)= -169,141.34 / (π*2,806*51.96*1) + 4*1e3*81,214.3 / (π*2,8062*51.96*1)= 0.12 mm

Required thickness, tensile stress at the top:

t = -Wt / (π*Dt*St*E) + 4*Mt / (π*Dt2*St*E)

= -163,145.84 / (π*2,806*51.96*1) + 4*1e3*38,025.6 / (π*2,8062*51.96*1)= 0.24 mm

Compressive side

Required thickness, compressive stress at base:

t = (1 + VAccel)*W / (π*D*Sc*Ec) + 4*M / (π*D2*Sc*Ec)= (1 + 0.2)*169,141.34 / (π*2,806*51.96*1) + 4*1e3*81,214.3 / (π*2,8062*51.96*1)= 0.7 mm

Required thickness, compressive stress at the top:

t = (1 + VAccel)*Wt / (π*Dt*Sc*Ec) + 4*Mt / (π*Dt2*Sc*Ec)

= (1 + 0.2)*163,145.84 / (π*2,806*51.96*1) + 4*1e3*38,025.6 / (π*2,8062*51.96*1)= 0.55 mm

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Seismic Code

Method of seismic analysis: UBC 1997 ground supportedSeismic Zone: 2BSeismic Zone Factor (Table 16-I): Z = 0.2000R Factor (Table 16-P): R = 2.9000Soil profile: (Table 16-Q): SDImportance Factor: I = 1.2500Vertical Accelerations Considered: YesForce Multiplier: = 0.3333Minimum Weight Multiplier: = 0.2000

Vessel Characteristics

Vessel height: 16.7490 ft (5.11 m)Vessel Weight:Operating, Corroded: 38,729 lb (17,567 kg)

Empty, Corroded: 13,302 lb (6,034 kg)Vacuum, Corroded: 38,729 lb (17,567 kg)

Period of Vibration Calculation

Fundamental Period, T:Operating, Corroded: 0.020 sec (f = 49.4 Hz)

Empty, Corroded: 0.014 sec (f = 73.2 Hz)Vacuum, Corroded: 0.020 sec (f = 50.6 Hz)

The fundamental period of vibration T (above) is calculated using the Rayleigh method ofapproximation:

T = 2 * PI * Sqr( {Sum(Wi * yi2 )} / {g * Sum(Wi * yi )} ), where

Wi is the weight of the ith lumped mass, andyi is its deflection when the system is treated as a cantilever beam.

Seismic Shear Reports:

Operating, CorrodedEmpty, CorrodedVacuum, CorrodedBase Shear Calculations

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Seismic Shear Report: Operating, Corroded

Component Elevation of bottomabove base (mm)

Elastic modulus E(MPa)

Inertia I(m4)

Seismic shear atBottom (N)

Bending Moment atBottom (N-m)

Top Ellipsoidal Head 4,370 184,920.0 * 1,293 487.5

Shell 1,530 184,920.0 0.1314 26,654.7 36,317.8

Bottom Ellipsoidal Head (top) 1,440 184,920.0 * 27,147.6 38,739.2

Support Skirt 0 185,520.0 0.05206 30,148.5 81,214.3

*Moment of Inertia I varies over the length of the componentSeismic Shear Report: Empty, Corroded

Component Elevation of bottomabove base (mm)

Elastic modulus E(MPa)

Inertia I(m4)

Seismic shear atBottom (N)

Bending Moment atBottom (N-m)

Top Ellipsoidal Head 4,370 195,233.3 * 1,219.5 459.8

Shell 1,530 195,233.3 0.1314 9,615 16,962.9

Bottom Ellipsoidal Head (top) 1,440 195,233.3 * 9,661.8 17,830.4

Support Skirt 0 195,233.3 0.05206 10,354.9 32,392.8

*Moment of Inertia I varies over the length of the componentSeismic Shear Report: Vacuum, Corroded

Component Elevation of bottomabove base (mm)

Elastic modulus E(MPa)

Inertia I(m4)

Seismic shear atBottom (N)

Bending Moment atBottom (N-m)

Top Ellipsoidal Head 4,370 186,300.0 * 1,293 487.5

Shell 1,530 186,300.0 0.1314 26,654.7 36,317.8

Bottom Ellipsoidal Head (top) 1,440 186,300.0 * 27,147.6 38,739.2

Support Skirt 0 195,300.0 0.05206 30,148.5 81,214.3

*Moment of Inertia I varies over the length of the component

Vertical Acceleration Term, VAccel

Factor is applied to dead load.Compressive Side: = 1.0 + VAccel

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VAccel Term is:greater of (Force Mult * Base Shear / Weight) or (Min. Weight Mult.)

Force multiplier = 0.3333 Minimum Weight Multiplier = 0.2000

Condition Base Shear ( N) Weight ( kg) Force Mult * ShearWeight VAccel

Operating, Corroded 30,148.5 17,567.4 0.0583 0.2

Operating, New 30,148.5 17,567.4 0.0583 0.2

Empty, Corroded 10,354.9 6,033.7 0.0583 0.2

Empty, New 10,354.9 6,033.7 0.0583 0.2

Vacuum, Corroded 30,148.5 17,567.4 0.0583 0.2

Base Shear Calculations

Operating, CorrodedEmpty, CorrodedVacuum, Corroded

Base Shear Calculations: Operating, Corroded

Rigid structure per 1634.3, p2-21, since period of vibration = 0.020 < 0.06 .V = 0.70 * Ca * I * W / 1.40 = 0.70 * 0.2800 * 1.2500 * 38,729.4844 / 1.4 = 6,777.66 lb (3,074.29kg)

Base Shear Calculations: Empty, Corroded

Rigid structure per 1634.3, p2-21, since period of vibration = 0.014 < 0.06 .V = 0.70 * Ca * I * W / 1.40 = 0.70 * 0.2800 * 1.2500 * 13,302.1289 / 1.4 = 2,327.87 lb (1,055.91kg)

Base Shear Calculations: Vacuum, Corroded

Rigid structure per 1634.3, p2-21, since period of vibration = 0.020 < 0.06 .V = 0.70 * Ca * I * W / 1.40 = 0.70 * 0.2800 * 1.2500 * 38,729.4844 / 1.4 = 6,777.66 lb (3,074.29kg)

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Wind Code

Building Code: ASCE 7-05Elevation of base above grade: 0.9843 ft (0.3000 m)Increase effective outer diameter by: 1.9685 ft (0.6000 m) Wind Force Coefficient Cf: 0.7000

Basic Wind Speed:, V: 111.8468 mph (180.0000km/h)

Importance Factor:, I: 1.5000Exposure category: CWind Directionality Factor, Kd: 0.9500Topographic Factor, Kzt: 1.0000Enforce min. loading of 0.48 kPa: Yes

Vessel Characteristics

Vessel height, h: 16.7490 ft (5.1051 m)Vessel Minimum Diameter, b

Operating, Corroded: 9.2848 ft (2.8300 m)Empty, Corroded: 9.2848 ft (2.8300 m)

Fundamental Frequency, n1

Operating, Corroded: 49.4091 HzEmpty, Corroded: 73.2382 Hz

Vacuum, Corroded: 50.6065 Hz Damping coefficient, β

Operating, Corroded: 0.0245Empty, Corroded: 0.0200

Vacuum, Corroded: 0.0245

Table Lookup Values

2.4.1 Basic Load Combinations for Allowable Stress DesignThe following load combinations are considered in accordance with ASCE section 2.4.1:

5. D + P + Ps + W7. 0.6D + P + Ps + WWhereD = Dead loadP = Internal or external pressure loadPs = Static head loadW = Wind load

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Page 39: Codeware, Inc. - HS ENG · Deficiencies Summary Warnings Summary Warnings for Support Skirt It is recommended that the skirt thickness be at least D/400 (warning) The Skirt/Legs/Saddles

Wind Deflection Reports:

Operating, CorrodedEmpty, CorrodedVacuum, CorrodedWind Pressure Calculations

Wind Deflection Report: Operating, Corroded

Component

Elevation ofbottomabove

base (mm)

EffectiveOD(m)

ElasticmodulusE (MPa)

InertiaI (m4)

Platformwind shear

atBottom (N)

Total windshear atBottom

(N)

bendingmoment at

Bottom(N-m)

Deflectionat top (mm)

Top Ellipsoidal Head 4,370 3.41 184,920.0 * 0 2,580 837.3 0.03

Shell 1,530 3.43 184,920.0 0.1314 0 13,970 24,370.8 0.02

Bottom Ellipsoidal Head(top) 1,440 3.41 184,920.0 * 0 14,327.9 25,644.2 0

Support Skirt 0 3.41 185,520.0 0.05206 0 20,060.9 50,404.1 0

*Moment of Inertia I varies over the length of the componentWind Deflection Report: Empty, Corroded

Component

Elevation ofbottomabove

base (mm)

EffectiveOD(m)

ElasticmodulusE (MPa)

InertiaI (m4)

Platformwind shear

atBottom (N)

Total windshear atBottom

(N)

bendingmoment at

Bottom(N-m)

Deflectionat top (mm)

Top Ellipsoidal Head 4,370 3.41 195,233.3 * 0 2,580 837.3 0.03

Shell 1,530 3.43 195,233.3 0.1314 0 13,970 24,370.8 0.02

Bottom Ellipsoidal Head(top) 1,440 3.41 195,233.3 * 0 14,327.9 25,644.2 0

Support Skirt 0 3.41 195,233.3 0.05206 0 20,060.9 50,404.1 0

*Moment of Inertia I varies over the length of the component

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Page 40: Codeware, Inc. - HS ENG · Deficiencies Summary Warnings Summary Warnings for Support Skirt It is recommended that the skirt thickness be at least D/400 (warning) The Skirt/Legs/Saddles

Wind Deflection Report: Vacuum, Corroded

Component

Elevation ofbottomabove

base (mm)

EffectiveOD(m)

ElasticmodulusE (MPa)

InertiaI (m4)

Platformwind shear

atBottom (N)

Total windshear atBottom

(N)

bendingmoment at

Bottom(N-m)

Deflectionat top (mm)

Top Ellipsoidal Head 4,370 3.41 186,300.0 * 0 2,580 837.3 0.03

Shell 1,530 3.43 186,300.0 0.1314 0 13,970 24,370.8 0.02

Bottom Ellipsoidal Head(top) 1,440 3.41 186,300.0 * 0 14,327.9 25,644.2 0

Support Skirt 0 3.41 195,300.0 0.05206 0 20,060.9 50,404.1 0

*Moment of Inertia I varies over the length of the component

Wind Pressure (WP) Calculations

Gust Factor (G¯) Calculations

Kz = 2.01 * (Z/Zg)2/α

= 2.01 * (Z/274.3200)0.2105

qz = 0.613 * Kz * Kzt * Kd * V2 * I= 0.613 * Kz * 1.0000 * 0.9500 * 50.00002 * 1.5000= 2,183.8125 * Kz

WP = qz * G * Cf (Minimum 0.48 kPa)= qz * G * 0.7000 (Minimum 0.48 kPa)

Design Wind Pressures

HeightZ

(m)Kz qz

(kPa)

WP:Operating

(kPa)

WP:Empty(kPa)

WP:Hydrotest

New(kPa)

WP: HydrotestCorroded

(kPa)

WP:Vacuum

(kPa)

4.6 0.8489 1.8548 1.1668 1.1668 N.A. N.A. 1.1668

6.1 0.9019 1.9707 1.2397 1.2397 N.A. N.A. 1.2397Design Wind Force determined from: F = Pressure * Af , where Af is the projected area.

Gust Factor Calculations

Operating, CorrodedEmpty, CorrodedVacuum, Corroded

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Page 41: Codeware, Inc. - HS ENG · Deficiencies Summary Warnings Summary Warnings for Support Skirt It is recommended that the skirt thickness be at least D/400 (warning) The Skirt/Legs/Saddles

Gust Factor Calculations: Operating, Corroded

Vessel is considered a rigid structure as n1 = 49.4091 Hz ≥ 1 Hz.

z¯ = max ( 0.60 * h , zmin )= max ( 0.60 * 16.7490 , 15.0000 )= 15.0000

Iz¯ = c * (33 / z¯)1/6

= 0.2000 * (33 / 15.0000)1/6

= 0.2281Lz¯ = l * (z¯ / 33)ep

= 500.0000 * (15.0000 / 33)0.2000

= 427.0566Q = Sqr(1 / (1 + 0.63 * ((b + h) / Lz¯)0.63))

= Sqr(1 / (1 + 0.63 * ((9.2848 + 16.7490) / 427.0566)0.63))= 0.9500

G = 0.925 * (1 + 1.7 * gQ * Iz¯ * Q) / (1 + 1.7 * gv * Iz¯)= 0.925 * (1 + 1.7 * 3.40* 0.2281 * 0.9500) / (1 + 1.7 * 3.40 * 0.2281)= 0.8987

Gust Factor Calculations: Empty, Corroded

Vessel is considered a rigid structure as n1 = 73.2382 Hz ≥ 1 Hz.

z¯ = max ( 0.60 * h , zmin )= max ( 0.60 * 16.7490 , 15.0000 )= 15.0000

Iz¯ = c * (33 / z¯)1/6

= 0.2000 * (33 / 15.0000)1/6

= 0.2281Lz¯ = l * (z¯ / 33)ep

= 500.0000 * (15.0000 / 33)0.2000

= 427.0566Q = Sqr(1 / (1 + 0.63 * ((b + h) / Lz¯)0.63))

= Sqr(1 / (1 + 0.63 * ((9.2848 + 16.7490) / 427.0566)0.63))= 0.9500

G = 0.925 * (1 + 1.7 * gQ * Iz¯ * Q) / (1 + 1.7 * gv * Iz¯)= 0.925 * (1 + 1.7 * 3.40* 0.2281 * 0.9500) / (1 + 1.7 * 3.40 * 0.2281)= 0.8987

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Page 42: Codeware, Inc. - HS ENG · Deficiencies Summary Warnings Summary Warnings for Support Skirt It is recommended that the skirt thickness be at least D/400 (warning) The Skirt/Legs/Saddles

Gust Factor Calculations: Vacuum, Corroded

Vessel is considered a rigid structure as n1 = 50.6065 Hz ≥ 1 Hz.

z¯ = max ( 0.60 * h , zmin )= max ( 0.60 * 16.7490 , 15.0000 )= 15.0000

Iz¯ = c * (33 / z¯)1/6

= 0.2000 * (33 / 15.0000)1/6

= 0.2281Lz¯ = l * (z¯ / 33)ep

= 500.0000 * (15.0000 / 33)0.2000

= 427.0566Q = Sqr(1 / (1 + 0.63 * ((b + h) / Lz¯)0.63))

= Sqr(1 / (1 + 0.63 * ((9.2848 + 16.7490) / 427.0566)0.63))= 0.9500

G = 0.925 * (1 + 1.7 * gQ * Iz¯ * Q) / (1 + 1.7 * gv * Iz¯)= 0.925 * (1 + 1.7 * 3.40* 0.2281 * 0.9500) / (1 + 1.7 * 3.40 * 0.2281)= 0.8987

Table Lookup Values

α = 9.5000, zg = 274.3200 m [Table 6-2, page 78]c = 0.2000, l = 500.0000, ep = 0.2000 [Table 6-2, page 78]a¯ = 0.1538, b¯ = 0.6500 [Table 6-2, page 78]zmin = 15.0000 ft [Table 6-2, page 78]gQ = 3.40 [6.5.8.1 page 26]gv = 3.40 [6.5.8.1 page 26]

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Page 43: Codeware, Inc. - HS ENG · Deficiencies Summary Warnings Summary Warnings for Support Skirt It is recommended that the skirt thickness be at least D/400 (warning) The Skirt/Legs/Saddles

Jacket wt

Load Orientation Vertical LoadElevation above datum: 1,250 mmDirection angle: 0.00 degreesDistance from center of vessel: 0 mmMagnitude of force: 1,083 kg

Present when operating: YesIncluded in vessel lift weight: YesPresent when vessel is empty: YesPresent during hydrotest: Yes

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Page 44: Codeware, Inc. - HS ENG · Deficiencies Summary Warnings Summary Warnings for Support Skirt It is recommended that the skirt thickness be at least D/400 (warning) The Skirt/Legs/Saddles

Liquid Level bounded by Ellipsoidal Head #2

Location from datum 2,000 mm

Operating Liquid Specific Gravity 0.76

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