CODEWARE
6530 Sawyer Loop Rd.
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COMPRESS Pressure Vessel Design Calculations
Contract: 123-789
Designer: CTD
Name: Demo Vessel8310
P.O. Number: 123456
Unit Number: 2256-001
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Table of Contents
1
Deficiencies Summary
3
Nozzle Schedule
4
Nozzle Summary
5
Pressure Summary
6
Revision History
8
Settings Summary
9
Radiography Summary
11
Thickness Summary
12
Weight Summary
13
Long Seam Summary
Hydrostatic Test
Vacuum Summary
Nameplate Summary
Foundation Load Summary
Bill of Materials
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General Arrangement Drawing
14
16
17
18
20
21
22
Ellipsoidal Head #1
23
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Liquid Level bounded by Ellipsoidal Head #2
Straight Flange on Ellipsoidal Head #1
25
Nozzle #4 (N4)
28
Cylinder #2
32
Ear lug
35
Nozzle #2 (N2)
37
Nozzle #3 (N3)
42
Cylinder #1
47
Legs #1
51
Nozzle #1 (N1)
59
Tail lug
64
Straight Flange on Ellipsoidal Head #2
66
Ellipsoidal Head #2
69
Seismic Code
71
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General Arrangement Drawing
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2/74
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Deficiencies Summary
Deficiencies for Nozzle #4 (N4)
Nozzle MAWP (78.93 psi) is less than the design pressure (100 psi).
UG-37: Not adequately reinforced (Internal Pressure)
Nozzle MAP (82.19 psi) is less than the design pressure (100 psi).
UG-37: Not adequately reinforced (External Pressure)
UG-37: Nozzle MAEP (12.14 psi) is less than the external design pressure (15 psi).
Warnings Summary
Warnings for Legs #1
Pad width (1.75 in) is greater than 8*min[t , tp] = 1.5 in. External loads may cause the pad to fail by buckling unless intermediate pad
welds are used (See Bednar 7.5 paragraph 3). (warning)
Warnings for Nozzle #1 (N1)
The attached ASME B16.5 flange limits the nozzle MAWP. (warning)
Warnings for Nozzle #2 (N2)
The attached ASME B16.5 flange limits the nozzle MAWP. (warning)
Warnings for Nozzle #3 (N3)
The attached ASME B16.5 flange limits the nozzle MAWP. (warning)
Warnings for Nozzle #4 (N4)
Nozzle does not satisfy the specified minimum projection length of 6" (warning)
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Warnings for Seismic Code
ASCE 7-22 provisions require a separate design for support legs over 24 in. (610 mm) long. Additional calculations may be required for
this equipment support structure. See ASCE 7-22 Commentary, Section C13.6.4. (warning)
Warnings for Vessel
Changes to steelmaking practices have increased the risk of brittle fracture at temperatures higher than the ASME impact test
exemption temperatures. It is highly recommended that the following supplemental requirements be applied for SA-105, SA-106 B, SA53 seamless, and SA-234: material composition should have a minimum Mn:C ratio of 5, and SA-105 flanges should require a grain size
of 7 or finer. (warning)
ASME B16.5 / B16.47 Flange Warnings Summary
Flange
Applicable Warnings
Nozzle #4 (N4) 1, 2
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Nozzle #2 (N2) 1, 2
Nozzle #3 (N3) 1, 2
Nozzle #1 (N1) 1, 2
No.
Warning
1 For Class 150 flanges, ASME B16.5 para. 5.4.3 recommends gaskets to be in accordance with Nonmandatory Appendix B, Table
B1, Group No. I.
2 For Class 150 flanges when temperature exceeds 400 °F, care should be taken to avoid imposing severe external loads and/or
thermal gradients or leakage may develop. ASME B16.5 para. 2.5.2.
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Nozzle Schedule
Specifications
Nozzle
mark
Identifier
Size
N1
Nozzle #1
6.625 OD x 0.28
N4
Nozzle #3
Normalized Fine Grain
Nozzle
SA-105
No
No
No
Pad
SA-105
No
No
No
Nozzle
SA-105
No
No
No
Pad
SA-105
No
No
No
Nozzle
SA-105
No
No
No
Pad
SA-105
No
No
No
No
No
No
6.625 OD x 0.28
6.625 OD x 0.28
Nozzle #4 NPS 3.5 Sch 40 (Std) Nozzle SA-106 B Smls pipe
Flange
Blind
NPS 6 Class 150
WN A105
No
NPS 6 Class 150
WN A105
No
NPS 6 Class 150
WN A105
No
NPS 3 1/2 Class 150
WN A105
No
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N3
Nozzle #2
Impact
Tested
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N2
Materials
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Nozzle Summary
Dimensions
Shell
Nozzle
mark
OD
(in)
tn
Req tn
(in)
(in)
Reinforcement
Pad
A1? A2?
Nom t
(in)
Design t User t Width
(in)
(in)
(in)
tpad
Corr
(in)
Aa/Ar
(%)
(in)
N1
6.625
0.28
0.1565 Yes Yes
0.1875
0.1565
1
0.1339
0
100.0
N2
6.625
0.28
0.1565 Yes Yes
0.1875
0.1565
1
0.1339
0
100.0
N3
6.625
0.28
0.1565 Yes Yes
0.1875
0.1565
1
0.1339
0
100.0
N4
4
0.226 0.0864 Yes Yes 0.1007*
0.1006
N/A
N/A
0
69.8**
*Head minimum thickness after forming
**The nozzle does not have sufficient reinforcement.
Definitions
tn
Nozzle thickness
Req tn
Nozzle thickness required per UG-45/UG-16
Increased for pipe to account for 12.5% pipe thickness tolerance
Nom t
Vessel wall thickness
User t
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Design t Required vessel wall thickness due to pressure + corrosion allowance per UG-37
Local vessel wall thickness (near opening)
Area available per UG-37, governing condition
Ar
Area required per UG-37, governing condition
Corr
Corrosion allowance on nozzle wall
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Aa
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Pressure Summary
Component Summary
Identifier
P
T
MAWP
Design Design
(psi)
(psi)
(°F)
MAP
(psi)
Te
MAEP
MDMT
external
(psi)
(°F)
(°F)
MDMT
Exemption
Impact
Tested
Ellipsoidal Head #1
100
650
105.12 111.83
15.02
650
-55
Note 1
No
Straight Flange on Ellipsoidal Head #1
100
650
194.62 207.04
18.38
650
-55
Note 2
No
Cylinder #2
100
650
193.75 207.04
18.38
650
-55
Note 3
No
Cylinder #1
100
650
192.45 207.04
18.38
650
-55
Note 4
No
Straight Flange on Ellipsoidal Head #2
100
650
192.38 207.04
18.38
650
-55
Note 6
No
Ellipsoidal Head #2
100
650
102.55 111.83
15.02
650
-55
Note 5
No
Legs #1
100
650
78.93
N/A
N/A
N/A
N/A
N/A
N/A
Nozzle #1 (N1)
100
650
123.63
173
18.38
650
-55
Nozzle #3 (N3)
Nozzle #4 (N4)
100
100
650
650
124.93
124.78
173
173
18.38
18.38
650
650
Note 7
No
Pad
Note 8
No
Nozzle
Note 9
No
-55
Pad Note 10
No
Nozzle Note 11
No
Pad Note 12
No
-55
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Nozzle #2 (N2)
Nozzle
100
650
78.93
82.19
12.14
650
-55
Note 13
No
Chamber Summary
Design MDMT
Rated MDMT
MAWP hot & corroded
MAP cold & new
MAEP
-20 °F
-20 °F @ 78.93 psi
78.93 psi @ 650 °F
82.19 psi @ 70 °F
12.14 psi @ 650 °F
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(1) The rated MDMT is limited to the design MDMT based on the setting in the Calculations tab of the Set Mode dialog.
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Notes for MDMT Rating
Note #
Exemption
Details
1. Straight Flange governs MDMT
Material impact test exemption temperature from Fig UCS-66 Curve B = -20°F
2. Fig UCS-66.1 MDMT reduction = 108.7°F, (coincident ratio = 0.3798)
UCS-66 governing thickness = 0.1875 in
Rated MDMT of -128.7°F is limited to -55°F by UCS-66(b)(2)
Material impact test exemption temperature from Fig UCS-66 Curve B = -20°F
3. Fig UCS-66.1 MDMT reduction = 105.1°F, (coincident ratio = 0.3839)
UCS-66 governing thickness = 0.1875 in
Rated MDMT of -125.1°F is limited to -55°F by UCS-66(b)(2)
Material impact test exemption temperature from Fig UCS-66 Curve B = -20°F
4. Fig UCS-66.1 MDMT reduction = 100.1°F, (coincident ratio = 0.3902)
UCS-66 governing thickness = 0.1875 in
Rated MDMT of -120.1°F is limited to -55°F by UCS-66(b)(2)
5. Straight Flange governs MDMT
Material impact test exemption temperature from Fig UCS-66 Curve B = -20°F
6. Fig UCS-66.1 MDMT reduction = 99.8°F, (coincident ratio = 0.3906)
UCS-66 governing thickness = 0.1875 in
Rated MDMT of -119.8°F is limited to -55°F by UCS-66(b)(2)
UCS-66 governing thickness = 0.1875 in.
Pad impact test exemption temperature from Fig UCS-66 Curve B = -20°F
8. Fig UCS-66.1 MDMT reduction = 102.7°F, (coincident ratio = 0.3869)
Rated MDMT of -122.7°F is limited to -55°F by UCS-66(b)(2)
UCS-66 governing thickness = 0.1339 in.
Nozzle impact test exemption temperature from Fig UCS-66 Curve B = -20°F
9. Fig UCS-66.1 MDMT reduction = 107.9°F, (coincident ratio = 0.3806)
Rated MDMT of -127.9°F is limited to -55°F by UCS-66(b)(2)
UCS-66 governing thickness = 0.1875 in.
Pad impact test exemption temperature from Fig UCS-66 Curve B = -20°F
10. Fig UCS-66.1 MDMT reduction = 107.9°F, (coincident ratio = 0.3806)
Rated MDMT of -127.9°F is limited to -55°F by UCS-66(b)(2)
UCS-66 governing thickness = 0.1339 in.
Nozzle impact test exemption temperature from Fig UCS-66 Curve B = -20°F
11. Fig UCS-66.1 MDMT reduction = 107.3°F, (coincident ratio = 0.3813)
Rated MDMT of -127.3°F is limited to -55°F by UCS-66(b)(2)
UCS-66 governing thickness = 0.1875 in.
Pad impact test exemption temperature from Fig UCS-66 Curve B = -20°F
12. Fig UCS-66.1 MDMT reduction = 107.3°F, (coincident ratio = 0.3813)
Rated MDMT of -127.3°F is limited to -55°F by UCS-66(b)(2)
UCS-66 governing thickness = 0.1339 in.
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Nozzle impact test exemption temperature from Fig UCS-66 Curve B = -20°F
7. Fig UCS-66.1 MDMT reduction = 102.7°F, (coincident ratio = 0.3869)
Rated MDMT of -122.7°F is limited to -55°F by UCS-66(b)(2)
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13. Nozzle is impact test exempt per UCS-66(d) (NPS 4 or smaller pipe).
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Revision History
Revisions
Operator
Notes
1/ 6/2022 christian.dionisio New vessel created ASME Section VIII Division 1 [COMPRESS 2022 Build 8200]
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Settings Summary
COMPRESS 2023 Build 8310
ASME Section VIII Division 1, 2021 Edition
U.S. Customary
Datum Line Location
0.00" from bottom seam
Vessel Design Mode
Rating Mode (Analysis)
Minimum thickness
0.0625" per UG-16(b)
Design for cold shut down only
No
Design for lethal service (full radiography required)
No
Design nozzles for
Design P only
Corrosion weight loss
100% of theoretical loss
UG-23 Stress Increase
1.00
Skirt/legs stress increase
1.0
Minimum nozzle projection
6"
Juncture calculations for a > 30 only
Yes
Preheat P-No 1 Materials > 1.25" and <= 1.50" thick
No
UG-37(a) shell tr calculation considers longitudinal stress
No
Cylindrical shells made from pipe are entered as minimum thickness
No
Nozzles made from pipe are entered as minimum thickness
No
ASME B16.9 fittings are entered as minimum thickness
No
Butt welds
Tapered per Figure UCS-66.3(a)
Apply interpretation VIII-1-86-175
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Units
Apply interpretation VIII-1-01-37
Yes
Apply interpretation VIII-1-01-150
Yes
Apply interpretation VIII-1-07-50
Yes
Apply interpretation VIII-1-16-85
No
No UCS-66.1 MDMT reduction
No
No UCS-68(c) MDMT reduction
No
Disallow UG-20(f) exemptions
No
Disallow Appendix 1-5, 1-8 calculations under 15 psi
No
Hydro/Pneumatic Test
Shop Hydrotest Pressure
Test liquid specific gravity
Maximum stress during test
1.3 times vessel MAWP [UG-99(b)]
1.00
90% of yield
Required Marking - UG-116
UG-116(e) Radiography
RT1
Use Appendix 46
Use UG-44(b)
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UG-116(f) Postweld heat treatment
Use Code Case 3035
Apply interpretation VIII-1-83-66
None
Code Cases\Interpretations
No
No
No
Yes
Yes
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
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
Yes
UG-22(j) Test pressure and coincident static head acting during the test:
No
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Note: UG-22(b),(c) and (f) loads only considered when supports are present.
Note 2: UG-22(d)(1),(e),(f)-snow,(g),(h),(i) are not considered. If these loads are present, additional calculations must be performed.
License Information
Company Name Codeware, Inc.
License
Commercial
License Key ID
81004
Support Expires June 03, 2024
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Account Number 502363524104218
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Radiography Summary
UG-116 Radiography
Longitudinal Seam
Category
(Fig UW3)
Component
Top Circumferential Seam
Radiography / Joint
Type
Category
(Fig UW3)
Radiography / Joint
Type
Bottom Circumferential Seam
Category
Mark
(Fig UW- Radiography / Joint Type
3)
Ellipsoidal Head #1
N/A
Seamless No RT
N/A
N/A
B
Full UW-11(a) / Type 1
RT1
Cylinder #2
A
Full UW-11(a) / Type 1
B
Full UW-11(a) / Type 1
B
Full UW-11(a) / Type 1
RT1
Cylinder #1
A
Full UW-11(a) / Type 1
B
Full UW-11(a) / Type 1
B
Full UW-11(a) / Type 1
RT1
Ellipsoidal Head #2
N/A
Seamless No RT
B
Full UW-11(a) / Type 1
N/A
N/A
RT1
Nozzle
Longitudinal Seam
Nozzle to Vessel Circumferential
Seam
Nozzle free end Circumferential
Seam
N/A
Seamless No RT
D
N/A / Type 7
C
UW-11(a)(4) exempt /
Type 1
N/A
Nozzle #2 (N2)
N/A
Seamless No RT
D
N/A / Type 7
C
UW-11(a)(4) exempt /
Type 1
N/A
Nozzle #3 (N3)
N/A
Seamless No RT
D
N/A / Type 7
C
UW-11(a)(4) exempt /
Type 1
N/A
Nozzle #1 (N1)
N/A
Seamless No RT
D
N/A / Type 7
C
UW-11(a)(4) exempt /
Type 1
N/A
Nozzle Flange
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Nozzle #4 (N4)
Longitudinal Seam
Flange Face
Nozzle to Flange Circumferential
Seam
ASME B16.5/16.47 flange attached to Nozzle
#4 (N4)
N/A
Seamless No RT
N/A
N/A / Gasketed
C
UW-11(a)(4) exempt /
Type 1
N/A
ASME B16.5/16.47 flange attached to Nozzle
#2 (N2)
N/A
Seamless No RT
N/A
N/A / Gasketed
C
UW-11(a)(4) exempt /
Type 1
N/A
ASME B16.5/16.47 flange attached to Nozzle
#3 (N3)
N/A
Seamless No RT
N/A
N/A / Gasketed
C
UW-11(a)(4) exempt /
Type 1
N/A
ASME B16.5/16.47 flange attached to Nozzle
#1 (N1)
N/A
Seamless No RT
N/A
N/A / Gasketed
C
UW-11(a)(4) exempt /
Type 1
N/A
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UG-116(e) Required Marking: RT1
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Thickness Summary
Component Data
Component
Identifier
Material
Ellipsoidal Head #1
Diameter Length Nominal t Design t Total Corrosion Joint
(in)
(in)
(in)
(in)
(in)
E
Load
SA-516 70
36 ID
9.1007
0.1007*
0.1007
0
1.00 External
Straight Flange on Ellipsoidal Head #1 SA-516 70
36 ID
2
0.1875
0.1729
0
1.00 External
Cylinder #2
SA-516 70
36 ID
36
0.1875
0.1729
0
1.00 External
Cylinder #1
SA-516 70
36 ID
36
0.1875
0.1729
0
1.00 External
Straight Flange on Ellipsoidal Head #2 SA-516 70
36 ID
2
0.1875
0.1729
0
1.00 External
Ellipsoidal Head #2
36 ID
9.1007
0.1007*
0.1007
0
1.00 External
SA-516 70
*Head minimum thickness after forming
Definitions
Nominal t Vessel wall nominal thickness
Design t
Required vessel thickness due to governing loading + corrosion
Joint E
Longitudinal seam joint efficiency
Load
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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Internal
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Weight Summary
Weight (lb) Contributed by Vessel Elements
Component
Operating Liquid
Metal
Metal
Insulation
Piping
Insulation
Lining
New* Corroded
Supports
+ Liquid
Test Liquid
Surface Area
New
Corroded
New
Corroded
ft2
0
0
295.2
295.2
13
Ellipsoidal Head #1
54.5
54.5
0
0
0
0
Cylinder #2
213.5
213.5
0
0
0
0
890.4
890.4
1,332.1
1,332.1
28
Cylinder #1
215.3
215.3
0
0
0
0
1,327.4
1,327.4
1,327.4
1,327.4
28
13
Ellipsoidal Head #2
54.9
54.9
0
0
0
0
293.9
293.9
293.9
293.9
Legs #1
233.8
233.8
0
0
0
0
0
0
0
0
22
TOTAL:
772.1
772.1
0
0
0
0
2,511.8
2,511.8
3,248.6
3,248.6
104
*Shells with attached nozzles have weight reduced by material cut out for opening.
Weight (lb) Contributed by Attachments
Nozzles &
Flanges
Body Flanges
Component
New
Corroded
Ellipsoidal Head #1
0
0
15
15
0
0
0
0
0
0
1
Cylinder #2
0
0
66.4
66.4
0
0
0
0
20.9
0
5
Cylinder #1
0
0
33.2
33.2
0
0
0
0
4.6
0
2
Ellipsoidal Head #2
0
0
0
0
0
0
0
0
0
0
0
Legs #1
0
0
0
0
0
0
0
0
0
0
0
TOTAL:
0
0
114.6
114.6
0
0
0
0
25.4
0
8
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New Corroded
Packed Ladders &
Tray
Rings & Vertical Surface Area
Trays
Beds
Platforms
Supports Clips
Loads
ft2
Vessel Totals
Operating Weight (lb)
Empty Weight (lb)
Test Weight (lb)
Capacity** (US gal)
Corroded
3,424
912
912
4,161
4,161
112
-
388
388
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Surface Area (ft2)
New
3,424
**The vessel capacity does not include volume of nozzle, piping or other attachments.
Vessel Lift Condition
Vessel Lift Weight, New (lb)
912
Center of Gravity from Datum (in) 25.2464
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Long Seam Summary
Shell Long Seam Angles
Component
Seam 1
Cylinder #2
225°
Cylinder #1
135°
Shell Plate Lengths
Component
Starting
Plate 1
Angle
Cylinder #2
225°
113.6864"
Cylinder #1
135°
113.6864"
Notes
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1) Plate Lengths use the circumference of the vessel based on the mid diameter of the components.
2) North is located at 0°
14/74
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PL RE
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Shell Rollout
15/74
Hydrostatic Test
Horizontal shop hydrostatic test based on MAWP per UG-99(b)
Gauge pressure at 70°F
= 1.3 ⋅ M AW P ⋅ LSR
= 1.3 ⋅ 78.93 ⋅ 1
=102.61 psi
Horizontal shop hydrostatic test
Local test
pressure
(psi)
Test liquid
static head
(psi)
UG-99(b)
stress
ratio
UG-99(b)
pressure
factor
Ellipsoidal Head #1
104.205
1.595
1.0638
1.30
Straight Flange on Ellipsoidal Head #1
104.205
1.595
1.0638
1.30
Cylinder #2
104.205
1.595
1.0638
1.30
Cylinder #1
104.205
1.595
1.0638
1.30
Straight Flange on Ellipsoidal Head #2
104.205
1.595
1.0638
1.30
Ellipsoidal Head #2
104.205
1.595
1.0638
1.30
Nozzle #1 (N1)
102.899
0.289
1.1236
1.30
Nozzle #2 (N2)
103.665
1.055
1.1236
1.30
102.899
0.289
1.1236
1.30
103.619
1.009
1
1.30
Nozzle #3 (N3)
Nozzle #4 (N4) (1)
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Identifier
(1) Nozzle #4 (N4) 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 to the top-most flange.
The field test condition has not been investigated.
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The test temperature of 70 °F is warmer than the minimum recommended temperature of -25 °F so the brittle fracture provision of UG99(h) has been met.
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Vacuum Summary
Largest Unsupported Length Le
Elevation
Length Le
above Datum
(in)
(in)
Component
Line of Support
Ellipsoidal Head #1
-
83.1007
N/A
-
1/3 depth of Ellipsoidal Head #1
77
N/A
Straight Flange on Ellipsoidal Head #1 Top
-
74
82
Straight Flange on Ellipsoidal Head #1 Bottom
-
72
82
Cylinder #2 Top
-
72
82
Cylinder #2 Bottom
-
36
82
Cylinder #1 Top
-
36
82
Cylinder #1 Bottom
-
0
82
82
-
0
-
-2
82
-
1/3 depth of Ellipsoidal Head #2
-5
N/A
Ellipsoidal Head #2
-
-11.1007
N/A
CO
D
EX E
W
AM A
PL RE
E
Straight Flange on Ellipsoidal Head #2 Top
Straight Flange on Ellipsoidal Head #2 Bottom
17/74
Nameplate Summary
CO
Orientation
D
EX E
W
AM A
PL RE
E
Geometry
Longitudinal
Projection
3"
Height
5"
Width
7"
Thickness
0.25"
Weld Size
0.1875"
Material
Attached To
Cylinder #1 (7.5" from bottom end)
Angle
45°
18/74
Nameplate Content
National Board Number
NB Number
Certification Mark Designator
U
Manufacturer’s Serial Number Manf. Serial No.
Certified by
Codeware Example
Notes
Nameplate Notes
Construction Type
W
Special Service
RT1
PWHT
None
MAWP
78.93 psi @ 650 °F
MDMT
-20 °F @ 78.93 psi
MAEP
12.14 psi @ 650 °F
CO
D
EX E
W
AM A
PL RE
E
Non Destructive Examination
19/74
Foundation Load Summary
Legs #1: Total Loading at Base
Base Shear Base Moment Vertical Force
( lbf )
( lbf -ft )
( lbf )
Load
Vessel Condition
Weight
Operating, Corroded
0
165
3,424
Weight
Operating, New
0
165
3,424
Seismic
Operating, Corroded
913
5,727
3,972
Seismic
Operating, New
913
5,727
3,972
Seismic
Empty, Corroded
219
1,643
1,058
Seismic
Empty, New
219
1,643
1,058
913
5,727
3,972
Seismic External Pressure, Corroded
Shear and moment values reported above are presented without applicable load combination factors.
Vertical Force values in the Seismic case include the 1 + 0.2 * SDS dead load factor (compressive) as described in the Seismic Code
report. This excludes the 0.7 load combination factor as well.
Support Information
Legs
4
Base Plate Length
10"
Base Plate Width
Base Plate Thickness
D
EX E
W
AM A
PL RE
E
Support Type
Number of Support Elements (Base Plates)
8"
0.375"
Number of Anchor Bolts Per Base Plate
1
Bolt Circle Diameter
38.375"
Bolt Size and Type
Bolt Hole Clearance
0.375"
65.2464"
CO
Center of Gravity (Distance from Support Base)
3/8" coarse bolt
20/74
Bill of Materials
Heads
Item #
Type
Material
Thk [in]
Dia. [in]
Wt. [lb] (ea.)
Qty
H1
Ellipsoidal Head
SA-516 70
0.1007 (min.)
36 ID
54.9
2
Shells
Item #
Type
Material
Thk [in]
Dia. [in]
Length [in]
Wt. [lb] (ea.)
Qty
S1
Cylinder
SA-516 70
0.1875
36 ID
36
217.2
2
Legs
Item #
Type
Material
Thk [in]
Length [in]
Wt. [lb]
Qty
L1
4 inch sch 40 pipe
Leg material
0.237
50
58.4
4
Nozzles
Item #
Type
Material
NPS
Thk [in]
Dia. [in]
Length [in]
Wt. [lb]
Noz1
Nozzle
SA-106 B Smls pipe
NPS 3.5 Sch 40 (Std)
0.226
4 OD
4
3
Noz2
Nozzle
SA-105
-
0.28
6.625 OD
15.7
27.6
Item #
D
EX E
W
AM A
PL RE
E
Flanges
Type
Material
NPS
Dia. [in]
Wt. [lb] (ea.)
Qty
AF1
ASME B16.5 Welding Neck - Class 150
A105
3 1/2
8.5 x 3.55
12
1
AF2
ASME B16.5 Welding Neck - Class 150
A105
6
11 x 6.07
24
3
Fasteners
Item #
Description
Material
Length [in]
FB1
5/8" coarse bolt
SA-193 B7 Bolt <= 2 1/2
3
Qty
8
FB2
3/4" coarse bolt
SA-193 B7 Bolt <= 2 1/2
3.3
24
SB1
3/8" coarse bolt
Support Leg bolt material
-
4
All listed flange bolts require associated nuts and washers in accordance with Division 1, UCS-11.
Plate1
CO
Plates
Item #
Plate1 - Note: Applies to nozzle pad
Plate2
Material
Thk [in]
Wt. [lb]
Qty [ ft²]
SA-105
0.1339
49.6
1.22
Unspecified material
0.1875
20.4
2.67
Unspecified material
0.375
34
2.22
A36
0.5
10.6
0.52
A36
0.625
1.1
0.0417
Unspecified material
0.25
3.5
0.3472
Plate2 - Note: Applies to support leg plates
Plate3
Plate3 - Note: Applies to support leg base plates
Plate4
Plate4 - Note: Applies to lift lug plates
Plate5
Plate5 - Note: Applies to lift lug plates
Plate6
Plate6 - Note: Applies to nameplate front, nameplate projection
21/74
Liquid Level bounded by Ellipsoidal Head #2
ASME Section VIII Division 1, 2021 Edition
60
Operating Liquid Specific Gravity
1
CO
D
EX E
W
AM A
PL RE
E
Location from Datum (in)
22/74
Ellipsoidal Head #1
ASME Section VIII Division 1, 2021 Edition
Component
Ellipsoidal Head
Material
SA-516 70 (II-D p. 20, ln. 45)
Attached To
Cylinder #2
Impact
Tested
Normalized
No
No
Fine Grain
Practice
PWHT
No
No
Maximize MDMT/
No MAWP
No
Design
Design
Pressure (psi) Temperature (°F)
Design
MDMT (°F)
Internal
100
650
External
15
650
Condition
Ps (psi)
Hs (in)
SG
Test horizontal
1.6
44.1875
1
-20
Static Liquid Head
Dimensions
Inner Diameter
36"
2
Corrosion
D
EX E
W
AM A
PL RE
E
Head Ratio
Minimum Thickness
0.1007"
Inner
0"
Outer
0"
Length Ls f
2"
Nominal Thickness ts f
0.1875"
Weight and Capacity
New
Corroded
Weight (lb)1
Capacity (US gal)1
54.55
35.25
54.55
35.25
Radiography
Seamless No RT
CO
Category A joints
Head to shell seam
1 includes straight flange
Full UW-11(a) Type 1
Results Summary
Governing condition
external pressure
Minimum thickness per UG-16
0.0625" + 0" = 0.0625"
Design thickness due to internal pressure (t)
0.0958"
Design thickness due to external pressure (te) 0.1007"
Maximum allowable working pressure (MAWP) 105.12 psi
Maximum allowable pressure (MAP)
111.83 psi
Maximum allowable external pressure (MAEP) 15.02 psi
Straight Flange governs MDMT
-55°F
Design thickness for internal pressure, (Corroded at 650 °F) UG-32(c)(1)
t=
P ⋅D
2 ⋅ S ⋅ E − 0.2 ⋅ P
+ Corrosion =
100 ⋅ 36
2 ⋅ 18,800 ⋅ 1 − 0.2 ⋅ 100
+ 0 = 0.0958"
Maximum allowable working pressure, (Corroded at 650 °F) UG-32(c)(1)
P =
2⋅S ⋅E ⋅t
2 ⋅ 18,800 ⋅ 1 ⋅ 0.1007
− Ps =
D + 0.2 ⋅ t
36 + 0.2 ⋅ 0.1007
− 0 = 105.12 psi
23/74
Maximum allowable pressure, (New at 70 °F) UG-32(c)(1)
P =
2 ⋅ 20,000 ⋅ 1 ⋅ 0.1007
2⋅S ⋅E ⋅t
− Ps =
D + 0.2 ⋅ t
36 + 0.2 ⋅ 0.1007
− 0 = 111.83 psi
Design thickness for external pressure, (Corroded at 650 °F) UG-33(d)
Equivalent outside spherical radius
Ro = Ko ⋅ D o = 0.895 ⋅ 36.2014 = 32.401 in
A =
0.125
0.125
=
Ro / t
32.401 / 0.100643
From Table CS-2: B
Pa =
t
=
4,829.0887 psi
4,829.0887
B
=
Ro / t
32.401 / 0.1006
=
= 0.000388
= 15 psi
0.1006"+Corrosion = 0.1006" + 0" = 0.1006"
D
EX E
W
AM A
PL RE
E
The head external pressure design thickness (te) is 0.1006".
Maximum Allowable External Pressure, (Corroded at 650 °F) UG-33(d)
Equivalent outside spherical radius
Ro = Ko ⋅ D o = 0.895 ⋅ 36.2014 = 32.401 in
A =
0.125
0.125
=
Ro / t
32.401 / 0.1007
From Table CS-2: B
4,831.7742 psi
4,831.7742
B
=
Ro / t
32.401 / 0.1007
= 15.0168 psi
CO
Pa =
=
= 0.000388
The maximum allowable external pressure (MAEP) is 15.02 psi.
% Extreme fiber elongation - UCS-79(d)
EF E = (
Rf
75 ⋅ t
75 ⋅ 0.1875
6.2138
) ⋅ (1 −
) =(
) ⋅ (1 −
) = 2.2631 %
Rf
Ro
6.2138
∞
The extreme fiber elongation does not exceed 5%.
24/74
Straight Flange on Ellipsoidal Head #1
ASME Section VIII Division 1, 2021 Edition
Component
Cylinder
Material
SA-516 70 (II-D p. 20, ln. 45)
Impact
Tested
Normalized
No
No
Fine Grain
Practice
PWHT
No
No
Maximize MDMT/
No MAWP
No
Design
Design
Pressure (psi) Temperature (°F)
Internal
100
650
External
15
650
Design
MDMT (°F)
-20
Static Liquid Head
Condition
Test horizontal
Ps (psi)
Hs (in)
SG
1.6
44.1875
1
Dimensions
Inner Diameter
36"
Length
2"
0.1875"
Inner
Corrosion
D
EX E
W
AM A
PL RE
E
Nominal Thickness
0"
Outer
0"
Weight and Capacity
New
Corroded
Weight (lb)
Capacity (US gal)
12.07
8.81
12.07
8.81
Radiography
Longitudinal seam
Seamless No RT
Bottom Circumferential seam
Full UW-11(a) Type 1
Results Summary
CO
Governing condition
Minimum thickness per UG-16
External pressure
0.0625" + 0" = 0.0625"
Design thickness due to internal pressure (t)
0.0961"
Design thickness due to external pressure (te)
0.1729"
Design thickness due to combined loadings + corrosion 0.0478"
Maximum allowable working pressure (MAWP)
194.62 psi
Maximum allowable pressure (MAP)
207.04 psi
Maximum allowable external pressure (MAEP)
18.38 psi
Rated MDMT
-55 °F
25/74
UCS-66 Material Toughness Requirements
Governing thickness, tg =
0.1875"
Exemption temperature from Fig UCS-66 Curve B =
-20°F
tr =
78.93 ⋅ 18
20,000 ⋅ 1 − 0.6 ⋅ 78.93
Stress ratio =
=
0.0712"
tr ⋅ E *
0.0712 ⋅ 1
=
=
tn − c
0.1875−0
0.3798
3,773 ⋅ 1
=
20,000 ⋅ 1
0.1886
Stress ratio longitudinal =
Reduction in MDMT, TR from Fig UCS-66.1 =
108.7°F
M DM T = max [M DM T − TR , − 55] = max [ − 20 − 108.7, − 55] = -55°F
Material is exempt from impact testing at the Design MDMT of -20°F.
Design thickness, (at 650 °F) UG-27(c)(1)
P ⋅R
S ⋅ E − 0.60 ⋅ P
+ Corrosion =
100 ⋅ 18
18,800 ⋅ 1.00 − 0.60 ⋅ 100
+ 0 = 0.0961"
D
EX E
W
AM A
PL RE
E
t=
Maximum allowable working pressure, (at 650 °F) UG-27(c)(1)
P =
S ⋅E ⋅t
18,800 ⋅ 1.00 ⋅ 0.1875
− Ps =
R + 0.60 ⋅ t
18 + 0.60 ⋅ 0.1875
− 0 = 194.62 psi
Maximum allowable pressure, (at 70 °F) UG-27(c)(1)
P =
20,000 ⋅ 1.00 ⋅ 0.1875
S ⋅E ⋅t
=
R + 0.60 ⋅ t
18 + 0.60 ⋅ 0.1875
= 207.04 psi
CO
External Pressure, (Corroded & at 650 °F) UG-28(c)
L
82
=
= 2.2543
Do
36.375
Do
36.375
=
= 210.4376
t
0.1729
From table G:
A = 0.000189
From table CS-2: B = 2,367.4126 psi
Pa =
4 ⋅ 2, 367.41
4⋅B
=
3 ⋅ (Do /t)
3 ⋅ (36.375/0.1729)
= 15 psi
Design thickness for external pressure Pa = 15 psi
ta = t + Corrosion = 0.1729 + 0 = 0.1729"
Maximum Allowable External Pressure, (Corroded & at 650 °F) UG-28(c)
L
82
=
= 2.2543
Do
36.375
Do
36.375
=
= 194.0000
t
0.1875
26/74
From table G:
A = 0.000213
From table CS-2: B = 2,674.7775 psi
Pa =
4 ⋅ 2, 674.78
4⋅B
=
3 ⋅ (Do /t)
3 ⋅ (36.375/0.1875)
= 18.38 psi
% Extreme fiber elongation - UCS-79(d)
EF E = (
Rf
50 ⋅ t
50 ⋅ 0.1875
18.0938
) ⋅ (1 −
) =(
) ⋅ (1 −
) = 0.5181 %
Rf
Ro
18.0938
∞
The extreme fiber elongation does not exceed 5%.
Thickness Required Due to Pressure + External Loads
Condition
Allowable Stress Before UG-23
Stress Increase ( psi)
Temperature Corrosion
( °F)
C (in)
St
Sc
Operating, Hot & Corroded
18,800
8,919
650
Operating, Hot & New
18,800
8,919
650
Hot Shut Down, New
Empty, Corroded
Empty, New
Vacuum
Req'd Thk Due
to Tension (in)
Req'd Thk Due to
Compression (in)
0
Seismic
393.31
0.0478
0.0478
0
Seismic
393.31
0.0478
0.0478
8,919
650
0
Seismic
0
0
0.0001
18,800
8,919
650
0
Seismic
0
0
0.0001
20,000
13,226
70
0
Seismic
0
0
0.0001
20,000
13,226
70
0
Seismic
0
0
0.0001
18,800
8,919
650
0
Seismic
186.49
0.0151
0.0152
18,800
8,919
650
0
Seismic
0
0.0001
0.0001
18,800
CO
Hot Shut Down, Corroded, Weight &
Eccentric Moments Only
Pressure
P ( psi)
D
EX E
W
AM A
PL RE
E
Hot Shut Down, Corroded
Load
27/74
Nozzle #4 (N4)
ASME Section VIII Division 1, 2021 Edition
Note: round inside edges per UG-76(c)
Location and Orientation
Ellipsoidal Head #1
Orientation
D
EX E
W
AM A
PL RE
E
Located on
90°
End of nozzle to datum line
Calculated as hillside
Distance to head center, R
88.8421"
Yes
6"
Passes through a Category A joint
No
Nozzle
Description
NPS 3.5 Sch 40 (Std)
Access opening
No
Material specification
Inside diameter, new
3.548"
0.226"
CO
Pipe nominal wall thickness
SA-106 B Smls pipe (II-D p. 16, ln. 16)
Pipe minimum wall thickness1
0.1978"
Corrosion allowance
0"
Opening chord length
Projection available outside vessel, Lpr
3.6037"
3.1564"
Projection available outside vessel to flange face, Lf 5.9664"
Local vessel minimum thickness
0.1007"
Liquid static head included
0 psi
Welds
Inner fillet, Leg41
0.1875"
Nozzle to vessel groove weld
0.1875"
Radiography
Longitudinal seam
Seamless No RT
Circumferential seam
Full UW-11(a) Type 1
1
Pipe minimum thickness = nominal thickness times pipe tolerance factor of 0.875.
28/74
ASME B16.5-2017 Flange
Description
NPS 3.5 Class 150 WN A105
Bolt Material
SA-193 B7 Bolt <= 2 1/2 (II-D p. 410, ln. 32)
Blind included
No
Rated MDMT
-55°F
Liquid static head
0 psi
MAWP rating
125 psi @ 650°F
MAP rating
285 psi @ 70°F
Hydrotest rating
450 psi @ 70°F
PWHT performed
No
Produced to Fine Grain Practice and No
Supplied in Heat Treated Condition
Impact Tested
No
Circumferential joint radiography
Full UW-11(a) Type 1
Notes
Flange rated MDMT per UCS-66(b)(3) = -155°F (Coincident ratio = 0.277)
Bolts rated MDMT per Fig UCS-66 note (c) = -55°F
Governing thickness, tg =
D
EX E
W
AM A
PL RE
E
UCS-66 Material Toughness Requirements Nozzle At Intersection
0.1007"
Impact test exempt per UCS-66(d) (NPS 4 or smaller pipe) = -155°F
tr =
78.93 ⋅ 0.9 ⋅ 36
2 ⋅ 20,000 ⋅ 1 − 0.2 ⋅ 78.93
Stress ratio =
=
0.064"
tr ⋅ E *
0.064 ⋅ 1
=
=
tn − c
0.1007−0
MDMT limited per UCS-68(b) =
0.6352
-55°F
Material is exempt from impact testing at the Design MDMT of -20°F.
CO
UCS-66 Material Toughness Requirements Nozzle
Impact test exempt per UCS-66(d) (NPS 4 or smaller pipe) = -155°F
Material is exempt from impact testing at the Design MDMT of -20°F.
Reinforcement Calculations for Internal Pressure
UG-37 Area Calculation Summary (in2)
UG-45 Summary (in)
For P = 100 psi @ 650 °F
The opening is NOT adequately reinforced
The nozzle passes UG-45
A
A
required available
0.3142
A1
A2
A
welds
A3 A5
0.1823 0.0516 0.0987 -- -- 0.032
treq
tmin
0.0958
0.1978
UG-41 Weld Failure Path Analysis Summary
The nozzle is exempt from weld strength calculations per UW-15(b)(1)
UW-16 Weld Sizing Summary
Weld description
Nozzle to shell fillet (Leg41)
Required weld Actual weld
throat size (in) throat size (in)
0.1313
0.1313
Status
weld size is adequate
Reinforcement Calculations for MAWP
Available reinforcement per UG-37 governs the MAWP of this nozzle.
29/74
UG-37 Area Calculation Summary (in2)
UG-45 Summary (in)
For P = 78.93 psi @ 650 °F
The opening is adequately reinforced
The nozzle passes UG-45
A
A
required available
0.248
A1
A2
A
welds
A3 A5
0.2481 0.1164 0.0997 -- -- 0.032
treq
tmin
0.0756
0.1978
UG-41 Weld Failure Path Analysis Summary
The nozzle is exempt from weld strength calculations per UW-15(b)(1)
UW-16 Weld Sizing Summary
Required weld Actual weld
throat size (in) throat size (in)
Weld description
Nozzle to shell fillet (Leg41)
0.1313
Status
0.1313
weld size is adequate
Reinforcement Calculations for MAP
Available reinforcement per UG-37 governs the MAP of this nozzle.
UG-45 Summary (in)
For P = 82.19 psi @ 70 °F
The opening is adequately reinforced
The nozzle passes UG-45
A
A
required available
0.2444
A1
A2
D
EX E
W
AM A
PL RE
E
UG-37 Area Calculation Summary (in2)
A
welds
A3 A5
0.2444 0.1207 0.0936 -- -- 0.0301
treq
tmin
0.074
0.1978
UG-41 Weld Failure Path Analysis Summary
The nozzle is exempt from weld strength calculations per UW-15(b)(1)
Reinforcement Calculations for External Pressure
UG-45 Summary (in)
For Pe = 15 psi @ 650 °F
The opening is NOT adequately reinforced
The nozzle passes UG-45
CO
UG-37 Area Calculation Summary (in2)
A
A
required available
0.1834
0.128
A1
A2
A
welds
A3 A5
0.0002 0.0958 -- -- 0.032
treq
tmin
0.0625
0.1978
UG-41 Weld Failure Path Analysis Summary
Weld strength calculations are not required for external pressure
UW-16 Weld Sizing Summary
Required weld Actual weld
throat size (in) throat size (in)
Weld description
Nozzle to shell fillet (Leg41)
0.1313
0.1313
Status
weld size is adequate
Reinforcement Calculations for MAEP
UG-37 Area Calculation Summary (in2)
UG-45 Summary (in)
For Pe = 12.14 psi @ 650 °F
The opening is adequately reinforced
The nozzle passes UG-45
A
A
required available
0.1648
A1
A2
A3 A5
A
welds
0.1649 0.0365 0.0964 -- -- 0.032
treq
tmin
0.0625
0.1978
UG-41 Weld Failure Path Analysis Summary
Weld strength calculations are not required for external pressure
30/74
UW-16 Weld Sizing Summary
Required weld Actual weld
throat size (in) throat size (in)
0.1313
0.1313
weld size is adequate
CO
Nozzle to shell fillet (Leg41)
Status
D
EX E
W
AM A
PL RE
E
Weld description
31/74
Cylinder #2
ASME Section VIII Division 1, 2021 Edition
Component
Cylinder
Material
SA-516 70 (II-D p. 20, ln. 45)
Impact
Tested
Normalized
No
No
Fine Grain
Practice
PWHT
No
No
Maximize MDMT/
No MAWP
No
Design
Design
Pressure (psi) Temperature (°F)
Internal
100
650
External
15
650
Design
MDMT (°F)
-20
Static Liquid Head
Condition
Ps (psi)
Hs (in)
SG
Operating
Test horizontal
0.87
24
1
1.6
44.1875
1
Dimensions
Inner Diameter
36"
36"
0.1875"
Inner
Corrosion
D
EX E
W
AM A
PL RE
E
Length
Nominal Thickness
0"
Outer
0"
Weight and Capacity
New
Corroded
Weight (lb)
Capacity (US gal)
213.51
158.63
213.51
158.63
Radiography
Longitudinal seam
Full UW-11(a) Type 1
Top Circumferential seam
Full UW-11(a) Type 1
CO
Bottom Circumferential seam
Full UW-11(a) Type 1
Results Summary
Governing condition
Minimum thickness per UG-16
External pressure
0.0625" + 0" = 0.0625"
Design thickness due to internal pressure (t)
0.0969"
Design thickness due to external pressure (te)
0.1729"
Design thickness due to combined loadings + corrosion 0.0481"
Maximum allowable working pressure (MAWP)
193.75 psi
Maximum allowable pressure (MAP)
207.04 psi
Maximum allowable external pressure (MAEP)
18.38 psi
Rated MDMT
-55 °F
32/74
UCS-66 Material Toughness Requirements
Governing thickness, tg =
0.1875"
Exemption temperature from Fig UCS-66 Curve B =
-20°F
tr =
79.8 ⋅ 18
20,000 ⋅ 1 − 0.6 ⋅ 79.8
Stress ratio =
=
0.072"
tr ⋅ E *
0.072 ⋅ 1
=
=
tn − c
0.1875−0
Stress ratio longitudinal =
0.3839
3,800 ⋅ 1
=
20,000 ⋅ 1
0.19
Reduction in MDMT, TR from Fig UCS-66.1 =
105.1°F
M DM T = max [M DM T − TR , − 55] = max [ − 20 − 105.1, − 55] = -55°F
Material is exempt from impact testing at the Design MDMT of -20°F.
Design thickness, (at 650 °F) UG-27(c)(1)
P ⋅R
S ⋅ E − 0.60 ⋅ P
+ Corrosion =
100.87 ⋅ 18
18,800 ⋅ 1.00 − 0.60 ⋅ 100.87
+ 0 = 0.0969"
D
EX E
W
AM A
PL RE
E
t=
Maximum allowable working pressure, (at 650 °F) UG-27(c)(1)
P =
S ⋅E ⋅t
18,800 ⋅ 1.00 ⋅ 0.1875
− Ps =
R + 0.60 ⋅ t
18 + 0.60 ⋅ 0.1875
− 0.87 = 193.75 psi
Maximum allowable pressure, (at 70 °F) UG-27(c)(1)
P =
20,000 ⋅ 1.00 ⋅ 0.1875
S ⋅E ⋅t
=
R + 0.60 ⋅ t
18 + 0.60 ⋅ 0.1875
= 207.04 psi
CO
External Pressure, (Corroded & at 650 °F) UG-28(c)
L
82
=
= 2.2543
Do
36.375
Do
36.375
=
= 210.4376
t
0.1729
From table G:
A = 0.000189
From table CS-2: B = 2,367.4126 psi
Pa =
4 ⋅ 2, 367.41
4⋅B
=
3 ⋅ (Do /t)
3 ⋅ (36.375/0.1729)
= 15 psi
Design thickness for external pressure Pa = 15 psi
ta = t + Corrosion = 0.1729 + 0 = 0.1729"
Maximum Allowable External Pressure, (Corroded & at 650 °F) UG-28(c)
33/74
L
82
=
= 2.2543
Do
36.375
Do
36.375
=
= 194.0000
t
0.1875
A = 0.000213
From table G:
From table CS-2: B = 2,674.7775 psi
4 ⋅ 2, 674.78
4⋅B
=
3 ⋅ (Do /t)
3 ⋅ (36.375/0.1875)
Pa =
= 18.38 psi
% Extreme fiber elongation - UCS-79(d)
EF E = (
Rf
50 ⋅ t
50 ⋅ 0.1875
18.0938
) ⋅ (1 −
) =(
) ⋅ (1 −
) = 0.5181 %
Rf
Ro
18.0938
∞
The extreme fiber elongation does not exceed 5%.
(1 + 0.14 ⋅ S DS ) ⋅ W
Pv =
α=
+
2 ⋅ π ⋅ Rm
Pv
10.2011
=
P e ⋅ Do
15 ⋅ 36.375
M
π ⋅ R2m
1.23
( DL )
o
=
1.23
( 36.375 )
82
2
1.11 ⋅ 370.3
2 ⋅ π ⋅ 18.0938
+
6, 767
π ⋅ 18.0938 2
= 10.2011 lb/in
= 0.242
n2 − 1 + m + m ⋅ α
n2 − 1 + m
=
42 − 1 + 0.242 + 0.242 ⋅ 0.0187
42 − 1 + 0.242
= 1.0003
CO
Ratio P e =
2
=
= 0.0187
n =4
m=
D
EX E
W
AM A
PL RE
E
External Pressure + Weight + Seismic Loading Check (Bergman, ASME paper 54-A-104)
Ratio P e ⋅ Pe ≤ MAEP
(1.0003 ⋅ 15 = 15) ≤ 18.38
Cylinder thickness is satisfactory.
Thickness Required Due to Pressure + External Loads
Condition
Allowable Stress Before UG-23
Stress Increase ( psi)
Temperature Corrosion
( °F)
C (in)
Load
Pressure
P ( psi)
Req'd Thk Due
to Tension (in)
Req'd Thk Due to
Compression (in)
0
Seismic
392.75
0.0481
0.0473
650
0
Seismic
392.75
0.0481
0.0473
650
0
Seismic
0
0.0003
0.0011
8,919
650
0
Seismic
0
0.0003
0.0011
13,226
70
0
Seismic
0
0.0001
0.0006
13,226
70
0
Seismic
0
0.0001
0.0006
18,800
8,919
650
0
Seismic
185.45
0.0146
0.0163
18,800
8,919
650
0
Seismic
0
0.0002
0.0005
St
Sc
Operating, Hot & Corroded
18,800
8,919
650
Operating, Hot & New
18,800
8,919
Hot Shut Down, Corroded
18,800
8,919
Hot Shut Down, New
18,800
Empty, Corroded
20,000
Empty, New
20,000
Vacuum
Hot Shut Down, Corroded, Weight &
Eccentric Moments Only
34/74
Ear lug
Minimum report
Geometry Inputs
Cylinder #2
Material
A36
Distance of Lift Point From Datum
82"
Angular Position
45° and 225°
Length, L
10"
Width, B
D
EX E
W
AM A
PL RE
E
Attached To
5"
Thickness, t
0.5"
Hole Diameter, d
1"
Pin Diameter, Dp
0.875"
Diameter at Pin, D
3"
Load Angle from Vertical, f
Has Brace Plate
0°
No
Welds
Size, tw
0.25"
Weld Length, L3
CO
5"
Intermediate Values
Load Factor
1.5000
Vessel Weight (new, incl. Load Factor), W
1,368.1 lb
Lug Weight (new), Wlug
20.9 lb (Qty=2)
Distance from Center of Gravity to Top Lug, l1
56.7536"
Distance from Center of Gravity to Tail Lug, l2
18.9964"
Distance from Vessel Center Line to Tail Lug, l3
20.1875"
Allowable Stress, Tensile, st
19,980 psi
Allowable Stress, Shear, ss
13,320 psi
Allowable Stress, Bearing, sp
29,970 psi
Allowable Stress, Bending, sb
22,201 psi
Allowable Stress, Weld Shear, tallowable
13,320 psi
Allowable Stress set to 1/3 Sy per ASME B30.20 No
35/74
Summary Values
Required Lift Pin Diameter, dreqd
0.1808"
Required Lug Thickness, treqd
0.0261"
Lug Stress Ratio, sratio
0.05
Weld Shear Stress Ratio, tratio
0.05
Lug Design
Acceptable
Local Stresses WRC 537
Acceptable
Maximum Out of Plane Lift Angle - Weak Axis Bending 34.06°
CO
D
EX E
W
AM A
PL RE
E
COMPRESS recommends a spreader beam be used to prevent weak axis bending of the top lugs.
No consideration is given for any bracing plate from the lug to the vessel.
36/74
Nozzle #2 (N2)
ASME Section VIII Division 1, 2021 Edition
Note: round inside edges per UG-76(c)
Location and Orientation
Cylinder #2
Orientation
D
EX E
W
AM A
PL RE
E
Located on
90°
Nozzle center line offset to datum line
58"
End of nozzle to shell center
26.1875"
Passes through a Category A joint
No
Nozzle
Access opening
No
Material specification
Inside diameter, new
Nominal wall thickness
Corrosion allowance
SA-105 (II-D p. 20, ln. 31)
6.065"
0.28"
0"
CO
Projection available outside vessel, Lpr
Internal projection, hn e w
4.5"
0.25"
Projection available outside vessel to flange face, Lf
8"
Local vessel minimum thickness
0.1875"
Liquid static head included
0.18 psi
Reinforcing Pad
Material specification
SA-105 (II-D p. 20, ln. 31)
Diameter, Dp
8.625"
Thickness, te
0.1339"
Is split
No
Welds
Inner fillet, Leg41
0.1875"
Outer fillet, Leg42
0.1339"
Lower fillet, Leg43
0.25"
Nozzle to vessel groove weld
0.1875"
Pad groove weld
0.1339"
Radiography
Longitudinal seam
Seamless No RT
Circumferential seam
Full UW-11(a) Type 1
37/74
ASME B16.5-2017 Flange
Description
NPS 6 Class 150 WN A105
Bolt Material
SA-193 B7 Bolt <= 2 1/2 (II-D p. 410, ln. 32)
Blind included
No
Rated MDMT
-55°F
Liquid static head
0.07 psi
MAWP rating
125 psi @ 650°F
MAP rating
285 psi @ 70°F
Hydrotest rating
450 psi @ 70°F
PWHT performed
No
Produced to Fine Grain Practice and No
Supplied in Heat Treated Condition
Impact Tested
No
Circumferential joint radiography
Full UW-11(a) Type 1
Notes
Flange rated MDMT per UCS-66(b)(3) = -155°F (Coincident ratio = 0.2772)
Bolts rated MDMT per Fig UCS-66 note (c) = -55°F
Governing thickness, tg =
D
EX E
W
AM A
PL RE
E
UCS-66 Material Toughness Requirements Nozzle At Intersection
0.1875"
Exemption temperature from Fig UCS-66 Curve B =
tr =
79.11 ⋅ 18
20,000 ⋅ 1 − 0.6 ⋅ 79.11
Stress ratio =
=
-20°F
0.0714"
tr ⋅ E *
0.0714 ⋅ 1
=
=
tn − c
0.1875−0
0.3806
3,775 ⋅ 1
=
20,000 ⋅ 1
0.1887
Stress ratio longitudinal =
Reduction in MDMT, TR from Fig UCS-66.1 =
107.9°F
CO
M DM T = max [M DM T − TR , − 55] = max [ − 20 − 107.9, − 55] = -55°F
Material is exempt from impact testing at the Design MDMT of -20°F.
UCS-66 Material Toughness Requirements Nozzle
tr =
79.11⋅3.0325
20,000 ⋅ 1 − 0.6 ⋅ 79.11
=
0.012"
tr ⋅ E *
0.012 ⋅ 1
=
=
tn − c
0.28−0
0.0429
Stress ratio ≤ 0.35, MDMT per UCS-66(b)(3) =
-155°F
Stress ratio =
Material is exempt from impact testing at the Design MDMT of -20°F.
38/74
UCS-66 Material Toughness Requirements Pad
Governing thickness, tg =
0.1339"
Exemption temperature from Fig UCS-66 Curve B =
-20°F
tr =
79.11 ⋅ 18
20,000 ⋅ 1 − 0.6 ⋅ 79.11
Stress ratio =
=
0.0714"
tr ⋅ E *
0.0714 ⋅ 1
=
=
tn − c
0.1875−0
0.3806
3,775 ⋅ 1
=
20,000 ⋅ 1
0.1887
Stress ratio longitudinal =
Reduction in MDMT, TR from Fig UCS-66.1 =
107.9°F
M DM T = max [M DM T − TR , − 55] = max [ − 20 − 107.9, − 55] = -55°F
Material is exempt from impact testing at the Design MDMT of -20°F.
Reinforcement Calculations for Internal Pressure
UG-45 Summary (in)
For P = 100.18 psi @ 650 °F
The opening is adequately reinforced
The nozzle passes UG-45
A
A
required available
0.5865
A1
A2
D
EX E
W
AM A
PL RE
E
UG-37 Area Calculation Summary (in2)
A3
A
welds
A5
1.2799 0.5508 0.2334 0.1326 0.2536 0.1095
treq
tmin
0.0962
0.28
UG-41 Weld Failure Path Analysis Summary (lbf)
All failure paths are stronger than the applicable weld loads
Weld load
W
Weld load
W1-1
Path 1-1
strength
Weld load
W2-2
Path 2-2
strength
Weld load
W3-3
Path 3-3
strength
1,580.97 10,101.38 50,597.73 10,487.88 85,213.65 15,575.3 65,662.75
Weld description
CO
UW-16 Weld Sizing Summary
Required weld Actual weld
size (in)
size (in)
Nozzle to pad fillet (Leg41)
0.0938
Pad to shell fillet (Leg42)
0.067
Status
0.1313
weld size is adequate
0.0938
weld size is adequate
Reinforcement Calculations for MAWP
The attached ASME B16.5 flange limits the nozzle MAWP.
UG-37 Area Calculation Summary (in2)
UG-45 Summary (in)
For P = 125.11 psi @ 650 °F
The opening is adequately reinforced
The nozzle passes UG-45
A
A
required available
0.733
A1
A2
A3
A5
A
welds
1.1309 0.4057 0.2295 0.1326 0.2536 0.1095
treq
tmin
0.1203
0.28
UG-41 Weld Failure Path Analysis Summary (lbf)
All failure paths are stronger than the applicable weld loads
Weld load
W
Weld load
W1-1
Path 1-1
strength
Weld load
W2-2
Path 2-2
strength
Weld load
W3-3
Path 3-3
strength
6,823.77 10,028.06 50,597.73 10,414.56 85,213.65 15,501.98 65,662.75
39/74
UW-16 Weld Sizing Summary
Required weld Actual weld
size (in)
size (in)
Weld description
Status
Nozzle to pad fillet (Leg41)
0.0938
0.1313
weld size is adequate
Pad to shell fillet (Leg42)
0.067
0.0938
weld size is adequate
Reinforcement Calculations for MAP
Available reinforcement per UG-37 governs the MAP of this nozzle.
UG-37 Area Calculation Summary (in2)
UG-45 Summary (in)
For P = 173 psi @ 70 °F
The opening is adequately reinforced
The nozzle passes UG-45
A
A
required available
0.9492
A1
A2
A3
A
welds
A5
0.9493 0.188 0.2378 0.14 0.2679 0.1156
treq
tmin
0.1565
0.28
UG-41 Weld Failure Path Analysis Summary (lbf)
All failure paths are stronger than the applicable weld loads
Weld load
W1-1
Weld load
W2-2
Path 1-1
strength
Path 2-2
strength
Weld load
W3-3
Path 3-3
strength
D
EX E
W
AM A
PL RE
E
Weld load
W
15,571.75 11,175.14 56,851.38 11,610
94,123.31 17,325.14 72,156.01
Reinforcement Calculations for External Pressure
UG-37 Area Calculation Summary (in2)
UG-45 Summary (in)
For Pe = 15 psi @ 650 °F
The opening is adequately reinforced
The nozzle passes UG-45
A
A
required available
0.5267
A1
A2
A3
A
welds
A5
0.8107 0.0884 0.2266 0.1326 0.2536 0.1095
treq
tmin
0.0625
0.28
CO
UG-41 Weld Failure Path Analysis Summary
Weld strength calculations are not required for external pressure
UW-16 Weld Sizing Summary
Weld description
Required weld Actual weld
size (in)
size (in)
Nozzle to pad fillet (Leg41)
0.0938
Pad to shell fillet (Leg42)
0.067
Status
0.1313
weld size is adequate
0.0938
weld size is adequate
Reinforcement Calculations for MAEP
UG-37 Area Calculation Summary (in2)
UG-45 Summary (in)
For Pe = 18.38 psi @ 650 °F
The opening is adequately reinforced
The nozzle passes UG-45
A
A
A1
required available
0.5714
0.7204
A2
A3
A5
A
welds
-- 0.2247 0.1326 0.2536 0.1095
treq
tmin
0.0625
0.28
UG-41 Weld Failure Path Analysis Summary
Weld strength calculations are not required for external pressure
40/74
UW-16 Weld Sizing Summary
Required weld Actual weld
size (in)
size (in)
Weld description
Status
0.0938
0.1313
weld size is adequate
Pad to shell fillet (Leg42)
0.067
0.0938
weld size is adequate
CO
D
EX E
W
AM A
PL RE
E
Nozzle to pad fillet (Leg41)
41/74
Nozzle #3 (N3)
ASME Section VIII Division 1, 2021 Edition
Note: round inside edges per UG-76(c)
Location and Orientation
Cylinder #2
Orientation
D
EX E
W
AM A
PL RE
E
Located on
0°
Nozzle center line offset to datum line
54"
End of nozzle to shell center
26.1875"
Passes through a Category A joint
No
Nozzle
Access opening
No
Material specification
Inside diameter, new
Nominal wall thickness
Corrosion allowance
SA-105 (II-D p. 20, ln. 31)
6.065"
0.28"
0"
CO
Projection available outside vessel, Lpr
Internal projection, hn e w
4.5"
0.25"
Projection available outside vessel to flange face, Lf
8"
Local vessel minimum thickness
0.1875"
Liquid static head included
0.33 psi
Reinforcing Pad
Material specification
SA-105 (II-D p. 20, ln. 31)
Diameter, Dp
8.625"
Thickness, te
0.1339"
Is split
No
Welds
Inner fillet, Leg41
0.1875"
Outer fillet, Leg42
0.1339"
Lower fillet, Leg43
0.25"
Nozzle to vessel groove weld
0.1875"
Pad groove weld
0.1339"
Radiography
Longitudinal seam
Seamless No RT
Circumferential seam
Full UW-11(a) Type 1
42/74
ASME B16.5-2017 Flange
Description
NPS 6 Class 150 WN A105
Bolt Material
SA-193 B7 Bolt <= 2 1/2 (II-D p. 410, ln. 32)
Blind included
No
Rated MDMT
-55°F
Liquid static head
0.22 psi
MAWP rating
125 psi @ 650°F
MAP rating
285 psi @ 70°F
Hydrotest rating
450 psi @ 70°F
PWHT performed
No
Produced to Fine Grain Practice and No
Supplied in Heat Treated Condition
Impact Tested
No
Circumferential joint radiography
Full UW-11(a) Type 1
Notes
Flange rated MDMT per UCS-66(b)(3) = -155°F (Coincident ratio = 0.2777)
Bolts rated MDMT per Fig UCS-66 note (c) = -55°F
Governing thickness, tg =
D
EX E
W
AM A
PL RE
E
UCS-66 Material Toughness Requirements Nozzle At Intersection
0.1875"
Exemption temperature from Fig UCS-66 Curve B =
tr =
79.26 ⋅ 18
20,000 ⋅ 1 − 0.6 ⋅ 79.26
Stress ratio =
=
-20°F
0.0715"
tr ⋅ E *
0.0715 ⋅ 1
=
=
tn − c
0.1875−0
0.3813
3,779 ⋅ 1
=
20,000 ⋅ 1
0.1889
Stress ratio longitudinal =
Reduction in MDMT, TR from Fig UCS-66.1 =
107.3°F
CO
M DM T = max [M DM T − TR , − 55] = max [ − 20 − 107.3, − 55] = -55°F
Material is exempt from impact testing at the Design MDMT of -20°F.
UCS-66 Material Toughness Requirements Nozzle
tr =
79.26⋅3.0325
20,000 ⋅ 1 − 0.6 ⋅ 79.26
=
0.012"
tr ⋅ E *
0.012 ⋅ 1
=
=
tn − c
0.28−0
0.043
Stress ratio ≤ 0.35, MDMT per UCS-66(b)(3) =
-155°F
Stress ratio =
Material is exempt from impact testing at the Design MDMT of -20°F.
43/74
UCS-66 Material Toughness Requirements Pad
Governing thickness, tg =
0.1339"
Exemption temperature from Fig UCS-66 Curve B =
-20°F
tr =
79.26 ⋅ 18
20,000 ⋅ 1 − 0.6 ⋅ 79.26
Stress ratio =
=
0.0715"
tr ⋅ E *
0.0715 ⋅ 1
=
=
tn − c
0.1875−0
0.3813
3,779 ⋅ 1
=
20,000 ⋅ 1
0.1889
Stress ratio longitudinal =
Reduction in MDMT, TR from Fig UCS-66.1 =
107.3°F
M DM T = max [M DM T − TR , − 55] = max [ − 20 − 107.3, − 55] = -55°F
Material is exempt from impact testing at the Design MDMT of -20°F.
Reinforcement Calculations for Internal Pressure
UG-45 Summary (in)
For P = 100.33 psi @ 650 °F
The opening is adequately reinforced
The nozzle passes UG-45
D
EX E
W
AM A
PL RE
E
UG-37 Area Calculation Summary (in2)
A
A
required available
A1
0.5874
0.55 0.2333 0.1326 0.2536 0.1095
1.279
A2
A3
A
welds
A5
treq
tmin
0.0964
0.28
UG-41 Weld Failure Path Analysis Summary (lbf)
All failure paths are stronger than the applicable weld loads
Weld load
W
Weld load
W1-1
Path 1-1
strength
Weld load
W2-2
Weld load
W3-3
Path 2-2
strength
Path 3-3
strength
1,610.65 10,099.5 50,597.73 10,486 85,213.65 15,573.42 65,662.75
Weld description
CO
UW-16 Weld Sizing Summary
Required weld Actual weld
size (in)
size (in)
Nozzle to pad fillet (Leg41)
0.0938
Pad to shell fillet (Leg42)
0.067
Status
0.1313
weld size is adequate
0.0938
weld size is adequate
Reinforcement Calculations for MAWP
The attached ASME B16.5 flange limits the nozzle MAWP.
UG-37 Area Calculation Summary (in2)
UG-45 Summary (in)
For P = 125.11 psi @ 650 °F
The opening is adequately reinforced
The nozzle passes UG-45
A
A
required available
0.733
A1
A2
A3
A5
A
welds
1.1309 0.4057 0.2295 0.1326 0.2536 0.1095
treq
tmin
0.1203
0.28
UG-41 Weld Failure Path Analysis Summary (lbf)
All failure paths are stronger than the applicable weld loads
Weld load
W
Weld load
W1-1
Path 1-1
strength
Weld load
W2-2
Path 2-2
strength
Weld load
W3-3
Path 3-3
strength
6,823.77 10,028.06 50,597.73 10,414.56 85,213.65 15,501.98 65,662.75
44/74
UW-16 Weld Sizing Summary
Required weld Actual weld
size (in)
size (in)
Weld description
Status
Nozzle to pad fillet (Leg41)
0.0938
0.1313
weld size is adequate
Pad to shell fillet (Leg42)
0.067
0.0938
weld size is adequate
Reinforcement Calculations for MAP
Available reinforcement per UG-37 governs the MAP of this nozzle.
UG-37 Area Calculation Summary (in2)
UG-45 Summary (in)
For P = 173 psi @ 70 °F
The opening is adequately reinforced
The nozzle passes UG-45
A
A
required available
0.9492
A1
A2
A3
A
welds
A5
0.9493 0.188 0.2378 0.14 0.2679 0.1156
treq
tmin
0.1565
0.28
UG-41 Weld Failure Path Analysis Summary (lbf)
All failure paths are stronger than the applicable weld loads
Weld load
W1-1
Weld load
W2-2
Path 1-1
strength
Path 2-2
strength
Weld load
W3-3
Path 3-3
strength
D
EX E
W
AM A
PL RE
E
Weld load
W
15,571.75 11,175.14 56,851.38 11,610
94,123.31 17,325.14 72,156.01
Reinforcement Calculations for External Pressure
UG-37 Area Calculation Summary (in2)
UG-45 Summary (in)
For Pe = 15 psi @ 650 °F
The opening is adequately reinforced
The nozzle passes UG-45
A
A
required available
0.5267
A1
A2
A3
A
welds
A5
0.8107 0.0884 0.2266 0.1326 0.2536 0.1095
treq
tmin
0.0625
0.28
CO
UG-41 Weld Failure Path Analysis Summary
Weld strength calculations are not required for external pressure
UW-16 Weld Sizing Summary
Weld description
Required weld Actual weld
size (in)
size (in)
Nozzle to pad fillet (Leg41)
0.0938
Pad to shell fillet (Leg42)
0.067
Status
0.1313
weld size is adequate
0.0938
weld size is adequate
Reinforcement Calculations for MAEP
UG-37 Area Calculation Summary (in2)
UG-45 Summary (in)
For Pe = 18.38 psi @ 650 °F
The opening is adequately reinforced
The nozzle passes UG-45
A
A
A1
required available
0.5714
0.7204
A2
A3
A5
A
welds
-- 0.2247 0.1326 0.2536 0.1095
treq
tmin
0.0625
0.28
UG-41 Weld Failure Path Analysis Summary
Weld strength calculations are not required for external pressure
45/74
UW-16 Weld Sizing Summary
Required weld Actual weld
size (in)
size (in)
Weld description
Status
0.0938
0.1313
weld size is adequate
Pad to shell fillet (Leg42)
0.067
0.0938
weld size is adequate
CO
D
EX E
W
AM A
PL RE
E
Nozzle to pad fillet (Leg41)
46/74
Cylinder #1
ASME Section VIII Division 1, 2021 Edition
Component
Cylinder
Material
SA-516 70 (II-D p. 20, ln. 45)
Impact
Tested
Normalized
No
No
Fine Grain
Practice
PWHT
No
No
Maximize MDMT/
No MAWP
No
Design
Design
Pressure (psi) Temperature (°F)
Internal
100
650
External
15
650
Design
MDMT (°F)
-20
Static Liquid Head
Condition
Ps (psi)
Hs (in)
SG
Operating
Test horizontal
2.17
60
1
1.6
44.1875
1
Dimensions
Inner Diameter
36"
36"
0.1875"
Inner
Corrosion
D
EX E
W
AM A
PL RE
E
Length
Nominal Thickness
0"
Outer
0"
Weight and Capacity
New
Corroded
Weight (lb)
Capacity (US gal)
215.34
158.63
215.34
158.63
Radiography
Longitudinal seam
Full UW-11(a) Type 1
Top Circumferential seam
Full UW-11(a) Type 1
CO
Bottom Circumferential seam
Full UW-11(a) Type 1
Results Summary
Governing condition
Minimum thickness per UG-16
External pressure
0.0625" + 0" = 0.0625"
Design thickness due to internal pressure (t)
0.0982"
Design thickness due to external pressure (te)
0.1729"
Design thickness due to combined loadings + corrosion 0.0492"
Maximum allowable working pressure (MAWP)
192.45 psi
Maximum allowable pressure (MAP)
207.04 psi
Maximum allowable external pressure (MAEP)
18.38 psi
Rated MDMT
-55 °F
47/74
UCS-66 Material Toughness Requirements
Governing thickness, tg =
0.1875"
Exemption temperature from Fig UCS-66 Curve B =
-20°F
tr =
81.1 ⋅ 18
20,000 ⋅ 1 − 0.6 ⋅ 81.1
Stress ratio =
=
0.0732"
tr ⋅ E *
0.0732 ⋅ 1
=
=
tn − c
0.1875−0
0.3902
3,908 ⋅ 1
=
20,000 ⋅ 1
0.1954
Stress ratio longitudinal =
Reduction in MDMT, TR from Fig UCS-66.1 =
100.1°F
M DM T = max [M DM T − TR , − 55] = max [ − 20 − 100.1, − 55] = -55°F
Material is exempt from impact testing at the Design MDMT of -20°F.
Design thickness, (at 650 °F) UG-27(c)(1)
P ⋅R
S ⋅ E − 0.60 ⋅ P
+ Corrosion =
102.17 ⋅ 18
18,800 ⋅ 1.00 − 0.60 ⋅ 102.17
+ 0 = 0.0982"
D
EX E
W
AM A
PL RE
E
t=
Maximum allowable working pressure, (at 650 °F) UG-27(c)(1)
P =
S ⋅E ⋅t
18,800 ⋅ 1.00 ⋅ 0.1875
− Ps =
R + 0.60 ⋅ t
18 + 0.60 ⋅ 0.1875
− 2.17 = 192.45 psi
Maximum allowable pressure, (at 70 °F) UG-27(c)(1)
P =
20,000 ⋅ 1.00 ⋅ 0.1875
S ⋅E ⋅t
=
R + 0.60 ⋅ t
18 + 0.60 ⋅ 0.1875
= 207.04 psi
CO
External Pressure, (Corroded & at 650 °F) UG-28(c)
L
82
=
= 2.2543
Do
36.375
Do
36.375
=
= 210.4376
t
0.1729
From table G:
A = 0.000189
From table CS-2: B = 2,367.4126 psi
Pa =
4 ⋅ 2, 367.41
4⋅B
=
3 ⋅ (Do /t)
3 ⋅ (36.375/0.1729)
= 15 psi
Design thickness for external pressure Pa = 15 psi
ta = t + Corrosion = 0.1729 + 0 = 0.1729"
Maximum Allowable External Pressure, (Corroded & at 650 °F) UG-28(c)
L
82
=
= 2.2543
Do
36.375
Do
36.375
=
= 194.0000
t
0.1875
48/74
From table G:
A = 0.000213
From table CS-2: B = 2,674.7775 psi
4 ⋅ 2, 674.78
4⋅B
=
3 ⋅ (Do /t)
3 ⋅ (36.375/0.1875)
Pa =
= 18.38 psi
% Extreme fiber elongation - UCS-79(d)
EF E = (
Rf
50 ⋅ t
50 ⋅ 0.1875
18.0938
) ⋅ (1 −
) =(
) ⋅ (1 −
) = 0.5181 %
Rf
Ro
18.0938
∞
The extreme fiber elongation does not exceed 5%.
External Pressure + Weight + Seismic Loading Check (Bergman, ASME paper 54-A-104)
(1 + 0.14 ⋅ S DS ) ⋅ W
α=
+
2 ⋅ π ⋅ Rm
Pv
29.0453
=
P e ⋅ Do
15 ⋅ 36.375
M
π ⋅ R2m
1.23
( DL )
o
Ratio P e =
2
=
1.23
( 36.375 )
82
2
1.11 ⋅ 617.4
2 ⋅ π ⋅ 18.0938
23, 662
+
π ⋅ 18.0938 2
= 29.0453 lb/in
= 0.0532
n =4
m=
=
= 0.242
n2 − 1 + m + m ⋅ α
n2 − 1 + m
D
EX E
W
AM A
PL RE
E
Pv =
=
Ratio P e ⋅ Pe ≤ MAEP
(1.0008 ⋅ 15 = 15.01) ≤ 18.38
42 − 1 + 0.242 + 0.242 ⋅ 0.0532
= 1.0008
42 − 1 + 0.242
CO
Cylinder thickness is satisfactory.
External Pressure + Weight + Seismic Loading Check at Bottom Seam(Bergman, ASME paper 54-A-104)
(0.6 − 0.14 ⋅ S DS ) ⋅ W
Pv =
α=
+
2 ⋅ π ⋅ Rm
Pv
10.7931
= −
P e ⋅ Do
15 ⋅ 36.375
M
π ⋅ R 2m
=
0.49 ⋅ -2, 572.7
2 ⋅ π ⋅ 18.0938
+
257
π ⋅ 18.0938 2
= − 10.7931 lb/in
= − 0.0198
n =4
m=
1.23
( DL )
o
Ratio P e =
2
=
1.23
( 36.375 )
82
2
= 0.242
n2 − 1 + m + m ⋅ α
n2 − 1 + m
=
42 − 1 + 0.242 + 0.242 ⋅ − 0.0198
4 2 − 1 + 0.242
=1
Ratio P e ⋅ Pe ≤ MAEP
(1 ⋅ 15 = 15) ≤ 18.38
Cylinder thickness is satisfactory.
49/74
Thickness Required Due to Pressure + External Loads
Allowable Stress Before UG-23
Stress Increase ( psi)
Condition
Operating, Hot & Corroded
Sc
18,800
8,919
18,800
Hot Shut Down, Corroded
Hot Shut Down, New
18,800
Top
Seismic
100
0.0489
0.0463
Bottom
Seismic
100
0.0492
0.0484
Top
Seismic
100
0.0489
0.0463
Bottom
Seismic
100
0.0492
0.0484
0
0
Top
Seismic
0
0.0011
0.0033
Bottom
Seismic
0
0.0014
0.0006
0
0
0.0011
0.0033
Seismic
0
0.0014
0.0006
Top
Seismic
0
0.0003
0.0011
Bottom
Seismic
0
0
0
Top
Seismic
0
0.0003
0.0011
Bottom
Seismic
0
0
0
Top
Seismic
-15
0.0128
0.0184
Bottom
Seismic
18,800
18,800
8,919
13,226
13,226
8,919
8,919
650
70
70
650
650
0
0
0
0
-15
0.0123
0.0139
Top
Seismic
0
0.0004
0.0008
Bottom
Seismic
0
0.0012
0.0012
0
CO
Hot Shut Down, Corroded, Weight &
Eccentric Moments Only
Req'd Thk Due
to Compression
(in)
Seismic
20,000
Vacuum
650
Req'd Thk
Due to
Tension (in)
Top
20,000
Empty, New
8,919
650
Pressure
P ( psi)
Bottom
18,800
Empty, Corroded
8,919
650
Load
D
EX E
W
AM A
PL RE
E
Operating, Hot & New
St
Temperature Corrosion
Location
( °F)
C (in)
50/74
Legs #1
Inputs
Leg material
Leg description
4 inch sch 40 pipe
Number of legs, N
4
Overall length
50"
Base to girth seam length
40"
User defined leg eccentricity
0"
Effective length coefficient, K
1.5
Coefficient, Cm
0.85
Leg yield stress, Fy
36,000 psi
Leg elastic modulus, E
29,000,000 psi
Angular Position
0°
Anchor Bolts
Anchor bolt size
0.375" coarse threaded
Anchor bolt material
38.375"
D
EX E
W
AM A
PL RE
E
Bolt circle, BC
Anchor bolts/leg, n
1
Anchor bolt allowable stress, Sb
20,000 psi
Anchor bolt corrosion allowance
0"
Anchor bolt hole clearance
0.375"
Reinforcing Pad
Pad length
12"
Pad width
8"
Pad thickness
0.1875"
Base Plate
Base plate length
10"
Base plate width
8"
0.375" (0.169" required)
CO
Base plate thickness
Base plate allowable stress
24,000 psi
Foundation allowable bearing stress
1,658 psi
Welds
Leg to pad fillet weld
Pad to shell fillet weld
Legs braced
0.1875" (0.0213" required)
0.1875" (0.0092" required)
No
Note: The support attachment point is assumed to be 1 in up from the cylinder circumferential seam.
Conditions Investigated (Only Governing Condition Reported)
Weight operating corroded
Weight empty corroded
Weight vacuum corroded
Seismic operating corroded
Seismic empty corroded
Seismic vacuum corroded
51/74
Governing Condition : Seismic operating corroded, Moment = 1,950.4 lbf-ft
Axial
Shear Axial Bending Bending Ratio Ratio
Force
Leg
fa
fbx
fby
attack position ° end load resisted
H1-1 H1-2
lbf
lbf
angle °
psi
psi
psi
0
-247.7
159.8
-78
2,048
0
0.0691 0.0826
90
886.8
159.8
180
1,523.7
159.8
280
0
2,048
0.0881 0.0991
481
2,048
0
0.0988 0.1084
270
886.8
159.8
0
-247.7
159.8
280
0
2,048
0.0881 0.0991
-78
1,448
1,448
90
-247.7
0.0994 0.1183
159.8
-78
1,448
1,448
0.0994 0.1183
180
270
1,523.7
159.8
481
1,448
1,448
0.1293 0.1442
1,523.7
159.8
481
1,448
1,448
0.1293 0.1442
0
45
Leg Calculations (AISC manual ninth edition)
Axial end load, P1 (Based on vessel total bending moment acting at leg attachment elevation)
3,190.1
48 ⋅ 1,950.4
Wt
48 ⋅ Mt
+
= (1 + 0.14 ⋅ 0.8) ⋅
+
4
4 ⋅ 36.75
N
N ⋅D
= 1,523.71 lb f
D
EX E
W
AM A
PL RE
E
P 1 = (1 + 0.14 ⋅ SDS ) ⋅
Allowable axial compressive stress, Fa (AISC chapter E)
−−−−−−−−−−−−−−−
−−−−2−−−−
2 ⋅ π 2 ⋅ 29,000,000
2⋅π ⋅E
Cc = √
=√
= 126.0993
36,000
Fy
K ⋅l
1.5⋅41.1875
=
r
1.5102
Fa =
(K⋅l/r) 2
) ⋅ Fy
2⋅Cc2
K⋅l/r
5
+ 38 ⋅ C
3
c
(K⋅l/r) 3
−
=
8⋅C c3
1 ⋅ (1 −
(40.9088)2
2⋅126.09932
) ⋅ 36,000
(40.9088)3
5
40.9088
+ 38 ⋅ 126.0993
−
3
8⋅126.09933
= 19,117 psi
CO
1 ⋅ (1 −
= 40.9088
Allowable axial compression and bending (AISC chapter H)
′ =
F ex
F ey′ =
1 ⋅ 12 ⋅ π 2 ⋅ E
23 ⋅ (K ⋅ l/r)
2
=
1 ⋅ 12 ⋅ π 2 ⋅ E
23 ⋅ (K ⋅ l/r)
=
2
1 ⋅ 12 ⋅ π 2 ⋅ 29,000,000
23 ⋅ (40.9088) 2
1 ⋅ 12 ⋅ π 2 ⋅ 29,000,000
23 ⋅ (40.9088) 2
= 89,231 psi
= 89,231 psi
F b = 1 ⋅ 0.66 ⋅ Fy = 1 ⋅ 0.66 ⋅ 36,000 = 23,760 psi
Compressive axial stress
fa =
1,523.71
P1
=
= 481 psi
3.17
A
Bending stresses
f bx =
f by =
F ⋅ cos(α) ⋅ L
Ix /Cx
F ⋅ sin(α) ⋅ L
Iy /C y
+
=
159.78 ⋅ cos(45) ⋅ 41.1875
P1 ⋅ E cc
=
Ix /C x
7.23/2.25
159.78 ⋅ sin(45) ⋅ 41.1875
7.23/2.25
+
1,523.71 ⋅ 0
7.23/2.25
= 1,448 psi
= 1,448 psi
AISC equation H1-1
52/74
H1−1 =
=
fa
Fa
+
Cmx ⋅ fbx
+
(1 − f a/ Fex′ ) ⋅ F bx
C my ⋅ fby
(1 − fa /F ey′ ) ⋅ Fby
0.85⋅1,448
481
+
19,117
(1 − 481/89,231) ⋅ 23,760
+
0.85⋅1,448
(1 − 481/89,231) ⋅ 23,760
= 0.1293
AISC equation H1-2
H1−2 =
fa
+
0.6 ⋅ 1 ⋅ F y
f bx
F bx
+
f by
F by
=
481
0.6 ⋅ 1 ⋅ 36,000
+
1,448
1,448
+
= 0.1442
23,760
23,760
4, 4 inch sch 40 pipe legs are adequate.
Anchor bolts - Seismic operating corroded condition governs
Tensile loading per leg (1 bolt per leg)
R=
(0.6 − 0.14 ⋅ SDS ) ⋅ W
48 ⋅ M
−
N ⋅ BC
N
=
48 ⋅ 4,058.7
(0.6 − 0.14 ⋅ 0.8) ⋅ 3,423.86
−
4 ⋅ 38.375
4
= 851.45 lb f
Required area per bolt
D
EX E
W
AM A
PL RE
E
R
851.45
=
= 0.0426 in 2
20,000 ⋅ 1
Sb ⋅ n
Ab =
Area of a 0.375" coarse threaded bolt (corroded) = 0.0678 in2
0.375" coarse threaded bolts are satisfactory.
Check the leg to pad fillet weld, Bednar 10.3, Seismic operating corroded governs
Note: continuous welding is assumed for all support leg fillet welds.
2 ⋅ b ⋅ d + d2
3
Jw =
(b + 2 ⋅ d)
12
=
=
3
−
(4.5 + 2 ⋅ 8.8125)
12
= 280.4816 in 3
E=
2 ⋅ 4.5 ⋅ 8.8125 + 8.8125 2
3
d 2 ⋅ (b + d)
b +2 ⋅d
2
= 52.3242 in 2
CO
Zw =
3
−
8.8125 2 ⋅ (4.5 + 8.8125)
4.5+2 ⋅ 8.8125
d2
8.8125 2
=
4.5+2 ⋅ 8.8125
b +2 ⋅d
2
= 3.510064 in
Governing weld load fx = Cos(45) ⋅ 159.78 = 112.98 lb f
Governing weld load fy = Sin(45) ⋅ 159.78 = 112.98 lb f
f1 =
f2 =
f3 =
f4 =
1,523.71
P1
=
= 68.87 lb f /in (VL direct shear)
22.125
Lweld
fy ⋅ Lleg ⋅ 0.5 ⋅ b
Jw
fy
Lweld
=
112.98 ⋅ 41.1875 ⋅ 0.5 ⋅ 4.5
280.4816
= 37.33 lb f /in (VL torsion shear)
112.98
= 5.11 lb f /in (Vc direct shear)
22.125
fy ⋅ Lleg ⋅ E
Jw
=
=
112.98 ⋅ 41.1875 ⋅ 3.5101
280.4816
= 58.23 lb f /in (Vc torsion shear)
53/74
f5 =
f6 =
fx ⋅ L leg + P1 ⋅ E cc
Zw
fx
Lweld
=
=
112.98 ⋅ 41.1875 + 1,523.71 ⋅ 0
52.3242
= 88.93 lb f /in (ML bending)
112.98
= 5.11 lb f /in (Direct outward radial shear)
22.125
−−−−−−−−−−−−−−−−−−−−−−−−−−−−
f = √(f 1 + f 2 ) 2 + (f 3 + f 4 ) 2 + (f 5 + f 6 ) 2
−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−
= √(68.87 + 37.33) 2 + (5.11 + 58.23) 2 + (88.93 + 5.11) 2
= 155.35 lb f /in (Resultant shear load)
Required leg to pad fillet weld leg size (welded both sides + top)
tw =
f
0.707 ⋅ 0.55 ⋅ Sa
=
155.35
0.707 ⋅ 0.55 ⋅ 18,800
= 0.0213 in
The 0.1875 in leg to pad attachment fillet weld size is adequate.
Check the pad to vessel fillet weld, Bednar 10.3, Seismic operating corroded governs
d2
12 2
= 8 ⋅ 12 +
= 144 in 2
3
3
3
3
Jw =
(b + d)
6
f1 =
1,523.71
P1
=
= 38.09 lb f /in (VL direct shear)
40
Lweld
f3 =
f4 =
f5 =
f6 =
fy ⋅ Lleg ⋅ 0.5 ⋅ b
Jw
fy
Lweld
=
=
Jw
=
fx ⋅ L leg + P1 ⋅ E cc
Zw
Lweld
=
112.98 ⋅ 41.1875 ⋅ 0.5 ⋅ 8
1,333.3333
= 13.96 lb f /in (VL torsion shear)
112.98
= 2.82 lb f /in (Vc direct shear)
40
fy ⋅ Lleg ⋅ 0.5 ⋅ d
fx
= 1,333.3333 in 3
CO
f2 =
=
(8 + 12)
6
D
EX E
W
AM A
PL RE
E
Zw = b ⋅ d +
112.98 ⋅ 41.1875 ⋅ 0.5 ⋅ 12
1,333.3333
=
= 20.94 lb f /in (Vc torsion shear)
112.98 ⋅ 41.1875 + 1,523.71 ⋅ 0
144
= 32.32 lb f /in (ML bending)
112.98
= 2.82 lb f /in (Direct outward radial shear)
40
−−−−−−−−−−−−−−−−−−−−−−−−−−−−
f = √(f 1 + f 2 ) 2 + (f 3 + f 4 ) 2 + (f 5 + f 6 ) 2
−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−
= √(38.09 + 13.96) 2 + (2.82 + 20.94) 2 + (32.32 + 2.82) 2
= 67.15 lb f /in (Resultant shear load)
Required pad to vessel fillet weld leg size (welded all around the pad edge)
tw =
f
0.707 ⋅ 0.55 ⋅ Sa
=
67.15
0.707 ⋅ 0.55 ⋅ 18,800
= 0.0092 in
0.1875 in pad to vessel attachment fillet weld size is adequate.
Base plate thickness check, AISC 3-106
fp =
2,220.99
P
=
= 28 psi
8 ⋅ 10
B ⋅N
54/74
tb =
−−−−−
3 ⋅ fp
N − (d − tL )
10 − (4.5 − 0.237)
⋅√
=
2
2
Sb
−−−−−−
3 ⋅ 28
⋅√
= 0.169 in
24,000
CO
D
EX E
W
AM A
PL RE
E
The base plate thickness is adequate.
55/74
Check the leg to vessel attachment stresses, WRC 537 (Seismic operating corroded governs)
Applied Loads
Radial load, Pr
-159.78 lbf
Circumferential moment, Mc 0 lbf -in
Circumferential shear, Vc
0 lbf
Longitudinal moment, ML
6,580.9 lbf -in
Longitudinal shear, VL
-247.67 lbf
Torsion moment, Mt
0 lbf -in
Internal pressure, P
81.1 psi
Mean shell radius, Rm
18.0938"
Local shell thickness, T
0.1875"
Design factor
3
Maximum stresses due to the applied loads at the pad edge (includes pressure)
Rm
18.0938
=
= 96.5
T
0.1875
C 1 = 4,C 2 = 9.5244 in
D
EX E
W
AM A
PL RE
E
γ=
Local circumferential pressure stress =
Local longitudinal pressure stress =
P ⋅ Ri
= 7,785 psi
T
P ⋅ Ri
= 3,892 psi
2⋅T
Maximum combined stress (P L + Pb + Q) = 10,017 psi
Allowable combined stress (P L + Pb + Q) = ± 3 ⋅ S = ± 56,400 psi
CO
The maximum combined stress (P L + Pb + Q) is within allowable limits.
Maximum local primary membrane stress (P L ) = 8,686 psi
Allowable local primary membrane stress (P L ) = ± 1.5 ⋅ S = ± 28,200 psi
The maximum local primary membrane stress (PL) is within allowable limits.
56/74
Stresses at the pad edge per WRC Bulletin 537
Figure
Y
b
Au
Al
Bu
Bl
Cu
Cl
Du
Dl
3C*
1.2708
0.4678
0
0
0
0
60
60
60
60
4C*
5.9065
0.3939
278
278
278
278
0
0
0
0
1C
0.05
0.3095
0
0
0
0
2C-1
0.0069
0.3095
189
-189
189
-189
0
0
0
0
3A*
2.3853
0.2952
0
0
0
0
0
0
0
0
1,363 -1,363 1,363 -1,363
1A
0.0541
0.3194
0
0
0
0
0
0
0
0
3B*
3.0328
0.3942
-623
-623
623
623
0
0
0
0
1B-1
0.0064
0.3458
-1,142 1,142
1,142
-1,142
0
0
0
0
7,785 7,785
7,785
7,785 7,785
7,785 7,785
7,785
6,487 8,393 10,017
7,355 9,208
6,482 9,208
6,482
8,686 7,845
7,845 7,845
7,845
Pressure stress*
Total circumferential stress
Primary membrane circumferential stress* 7,440 7,440
3C*
1.7016
0.3939
80
80
8,686
80
80
0
0
0
0
217
4.6162
0.4678
0
0
0
0
217
217
217
0.01
0.4071
273
-273
273
-273
0
0
0
0
2C
0.03
0.4071
0
0
0
0
818
-818
818
-818
4A*
8.9792
0.2952
0
0
0
0
0
0
0
0
2A
0.0203
0.3917
4B*
1.6528
2B-1
0.0114
D
EX E
W
AM A
PL RE
E
4C*
1C-1
0
0
0.3942
-509
-509
0.4266
-1,658 1,658
3,892 3,892
3,892
3,892 3,892
3,892 3,892
3,892
2,078 4,848
6,412
2,550 4,927
3,291 4,927
3,291
3,463 3,463
4,481
4,481 4,109
4,109 4,109
4,109
Pressure stress*
Total longitudinal stress
Primary membrane longitudinal stress*
Shear from Mt
Circ shear from Vc
Long shear from VL
Total Shear stress
0
0
0
0
0
509
509
0
0
0
0
1,658
-1,658
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
35
35
-35
-35
0
0
0
0
35
35
-35
-35
6,482 9,208
6,482
6,487 8,393 10,017
CO
Combined stress (PL+Pb+Q)
0
* denotes primary stress.
7,355 9,208
Maximum stresses due to the applied loads at the leg edge (includes pressure)
γ=
Rm
18.0938
=
= 48.25
T
0.375
C 1 = 2.25,C 2 = 6.9945 in
Local circumferential pressure stress =
Local longitudinal pressure stress =
P ⋅ Ri
= 7,785 psi
T
P ⋅ Ri
= 3,892 psi
2⋅T
Maximum combined stress (P L + Pb + Q) = 9,933 psi
Allowable combined stress (P L + Pb + Q) = ± 3 ⋅ S = ± 56,400 psi
The maximum combined stress (P L + Pb + Q) is within allowable limits.
Maximum local primary membrane stress (P L ) = 8,500 psi
Allowable local primary membrane stress (P L ) = ± 1.5 ⋅ S = ± 28,200 psi
The maximum local primary membrane stress (PL) is within allowable limits.
57/74
Stresses at the leg edge per WRC Bulletin 537
Figure
Y
b
Au
Al
Bu
Bl
Cu
Cl
Du
Dl
3C*
2.0861
0.3144
0
0
0
0
49
49
49
49
4C*
5.891
0.2589
139
139
139
139
0
0
0
0
1C
0.0631
0.1955
0
0
0
0
430
-430
430
-430
2C-1
0.0316
0.1955
215
-215
215
-215
0
0
0
0
3A*
1.9329
0.1815
0
0
0
0
0
0
0
0
1A
0.0694
0.2172
0
0
0
0
0
0
0
0
3B*
3.9825
0.2649
-576
-576
576
576
0
0
0
0
1B-1
0.0185
0.2353
-1,218 1,218 1,218 -1,218
0
0
0
0
Pressure stress*
7,785 7,785 7,785 7,785 7,785 7,785 7,785 7,785
Total circumferential stress
6,345 8,351 9,933 7,067 8,264 7,404 8,264 7,404
Primary membrane circumferential stress* 7,348 7,348 8,500 8,500 7,834 7,834 7,834 7,834
3C*
2.737
0.2589
64
64
64
64
0
0
0
0
120
5.097
0.3144
0
0
0
0
120
120
120
0.0419
0.2688
286
-286
286
-286
0
0
0
0
2C
0.03
0.2688
0
0
0
0
205
-205
205
-205
4A*
3.6513
0.1815
0
0
0
0
0
0
0
0
2A
0.0256
0.2794
4B*
1.5391
2B-1
0.0247
D
EX E
W
AM A
PL RE
E
4C*
1C-1
0
0
0
0
0
0
0
0
0.2649
-367
-367
367
367
0
0
0
0
0.3051
-1,258 1,258 1,258 -1,258
0
0
0
0
Pressure stress*
Total longitudinal stress
Primary membrane longitudinal stress*
Shear from Mt
Circ shear from Vc
Long shear from VL
Total Shear stress
2,617 4,561 5,867 2,779 4,217 3,807 4,217 3,807
3,589 3,589 4,323 4,323 4,012 4,012 4,012 4,012
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
24
24
-24
-24
0
0
0
0
24
24
-24
-24
6,345 8,351 9,933 7,067 8,264 7,404 8,264 7,404
CO
Combined stress (PL+Pb+Q)
3,892 3,892 3,892 3,892 3,892 3,892 3,892 3,892
* denotes primary stress.
58/74
Nozzle #1 (N1)
ASME Section VIII Division 1, 2021 Edition
Note: round inside edges per UG-76(c)
Location and Orientation
Cylinder #1
Orientation
D
EX E
W
AM A
PL RE
E
Located on
0°
Nozzle center line offset to datum line
22"
End of nozzle to shell center
26.1875"
Passes through a Category A joint
No
Nozzle
Access opening
No
Material specification
Inside diameter, new
Nominal wall thickness
Corrosion allowance
SA-105 (II-D p. 20, ln. 31)
6.065"
0.28"
0"
CO
Projection available outside vessel, Lpr
Internal projection, hn e w
4.5"
0.25"
Projection available outside vessel to flange face, Lf
8"
Local vessel minimum thickness
0.1875"
Liquid static head included
1.48 psi
Reinforcing Pad
Material specification
SA-105 (II-D p. 20, ln. 31)
Diameter, Dp
8.625"
Thickness, te
0.1339"
Is split
No
Welds
Inner fillet, Leg41
0.1875"
Outer fillet, Leg42
0.1339"
Lower fillet, Leg43
0.25"
Nozzle to vessel groove weld
0.1875"
Pad groove weld
0.1339"
Radiography
Longitudinal seam
Seamless No RT
Circumferential seam
Full UW-11(a) Type 1
59/74
ASME B16.5-2017 Flange
Description
NPS 6 Class 150 WN A105
Bolt Material
SA-193 B7 Bolt <= 2 1/2 (II-D p. 410, ln. 32)
Blind included
No
Rated MDMT
-55°F
Liquid static head
1.37 psi
MAWP rating
125 psi @ 650°F
MAP rating
285 psi @ 70°F
Hydrotest rating
450 psi @ 70°F
PWHT performed
No
Produced to Fine Grain Practice and No
Supplied in Heat Treated Condition
Impact Tested
No
Circumferential joint radiography
Full UW-11(a) Type 1
Notes
Flange rated MDMT per UCS-66(b)(3) = -155°F (Coincident ratio = 0.2818)
Bolts rated MDMT per Fig UCS-66 note (c) = -55°F
Governing thickness, tg =
D
EX E
W
AM A
PL RE
E
UCS-66 Material Toughness Requirements Nozzle At Intersection
0.1875"
Exemption temperature from Fig UCS-66 Curve B =
tr =
80.41 ⋅ 18
20,000 ⋅ 1 − 0.6 ⋅ 80.41
Stress ratio =
=
-20°F
0.0726"
tr ⋅ E *
0.0726 ⋅ 1
=
=
tn − c
0.1875−0
0.3869
3,826 ⋅ 1
=
20,000 ⋅ 1
0.1913
Stress ratio longitudinal =
Reduction in MDMT, TR from Fig UCS-66.1 =
102.7°F
CO
M DM T = max [M DM T − TR , − 55] = max [ − 20 − 102.7, − 55] = -55°F
Material is exempt from impact testing at the Design MDMT of -20°F.
UCS-66 Material Toughness Requirements Nozzle
tr =
80.41⋅3.0325
20,000 ⋅ 1 − 0.6 ⋅ 80.41
Stress ratio =
=
tr ⋅ E *
0.0122 ⋅ 1
=
=
tn − c
0.28−0
Stress ratio ≤ 0.35, MDMT per UCS-66(b)(3) =
0.0122"
0.0437
-155°F
Material is exempt from impact testing at the Design MDMT of -20°F.
60/74
UCS-66 Material Toughness Requirements Pad
Governing thickness, tg =
0.1339"
Exemption temperature from Fig UCS-66 Curve B =
-20°F
tr =
80.41 ⋅ 18
20,000 ⋅ 1 − 0.6 ⋅ 80.41
Stress ratio =
=
0.0726"
tr ⋅ E *
0.0726 ⋅ 1
=
=
tn − c
0.1875−0
0.3869
3,826 ⋅ 1
=
20,000 ⋅ 1
0.1913
Stress ratio longitudinal =
Reduction in MDMT, TR from Fig UCS-66.1 =
102.7°F
M DM T = max [M DM T − TR , − 55] = max [ − 20 − 102.7, − 55] = -55°F
Material is exempt from impact testing at the Design MDMT of -20°F.
Reinforcement Calculations for Internal Pressure
UG-45 Summary (in)
For P = 101.48 psi @ 650 °F
The opening is adequately reinforced
The nozzle passes UG-45
A
A
required available
0.5941
A1
A2
D
EX E
W
AM A
PL RE
E
UG-37 Area Calculation Summary (in2)
A3
A
welds
A5
1.2722 0.5433 0.2332 0.1326 0.2536 0.1095
treq
tmin
0.0975
0.28
UG-41 Weld Failure Path Analysis Summary (lbf)
All failure paths are stronger than the applicable weld loads
Weld load
W
Weld load
W1-1
Path 1-1
strength
Weld load
W2-2
Path 2-2
strength
Weld load
W3-3
Path 3-3
strength
1,852.73 10,097.62 50,597.73 10,484.12 85,213.65 15,571.54 65,662.75
Weld description
CO
UW-16 Weld Sizing Summary
Required weld Actual weld
size (in)
size (in)
Nozzle to pad fillet (Leg41)
0.0938
Pad to shell fillet (Leg42)
0.067
Status
0.1313
weld size is adequate
0.0938
weld size is adequate
Reinforcement Calculations for MAWP
The attached ASME B16.5 flange limits the nozzle MAWP.
UG-37 Area Calculation Summary (in2)
UG-45 Summary (in)
For P = 125.11 psi @ 650 °F
The opening is adequately reinforced
The nozzle passes UG-45
A
A
required available
0.733
A1
A2
A3
A5
A
welds
1.1309 0.4057 0.2295 0.1326 0.2536 0.1095
treq
tmin
0.1203
0.28
UG-41 Weld Failure Path Analysis Summary (lbf)
All failure paths are stronger than the applicable weld loads
Weld load
W
Weld load
W1-1
Path 1-1
strength
Weld load
W2-2
Path 2-2
strength
Weld load
W3-3
Path 3-3
strength
6,823.77 10,028.06 50,597.73 10,414.56 85,213.65 15,501.98 65,662.75
61/74
UW-16 Weld Sizing Summary
Required weld Actual weld
size (in)
size (in)
Weld description
Status
Nozzle to pad fillet (Leg41)
0.0938
0.1313
weld size is adequate
Pad to shell fillet (Leg42)
0.067
0.0938
weld size is adequate
Reinforcement Calculations for MAP
Available reinforcement per UG-37 governs the MAP of this nozzle.
UG-37 Area Calculation Summary (in2)
UG-45 Summary (in)
For P = 173 psi @ 70 °F
The opening is adequately reinforced
The nozzle passes UG-45
A
A
required available
0.9492
A1
A2
A3
A
welds
A5
0.9493 0.188 0.2378 0.14 0.2679 0.1156
treq
tmin
0.1565
0.28
UG-41 Weld Failure Path Analysis Summary (lbf)
All failure paths are stronger than the applicable weld loads
Weld load
W1-1
Weld load
W2-2
Path 1-1
strength
Path 2-2
strength
Weld load
W3-3
Path 3-3
strength
D
EX E
W
AM A
PL RE
E
Weld load
W
15,571.75 11,175.14 56,851.38 11,610
94,123.31 17,325.14 72,156.01
Reinforcement Calculations for External Pressure
UG-37 Area Calculation Summary (in2)
UG-45 Summary (in)
For Pe = 15 psi @ 650 °F
The opening is adequately reinforced
The nozzle passes UG-45
A
A
required available
0.5267
A1
A2
A3
A
welds
A5
0.8107 0.0884 0.2266 0.1326 0.2536 0.1095
treq
tmin
0.0625
0.28
CO
UG-41 Weld Failure Path Analysis Summary
Weld strength calculations are not required for external pressure
UW-16 Weld Sizing Summary
Weld description
Required weld Actual weld
size (in)
size (in)
Nozzle to pad fillet (Leg41)
0.0938
Pad to shell fillet (Leg42)
0.067
Status
0.1313
weld size is adequate
0.0938
weld size is adequate
Reinforcement Calculations for MAEP
UG-37 Area Calculation Summary (in2)
UG-45 Summary (in)
For Pe = 18.38 psi @ 650 °F
The opening is adequately reinforced
The nozzle passes UG-45
A
A
A1
required available
0.5714
0.7204
A2
A3
A5
A
welds
-- 0.2247 0.1326 0.2536 0.1095
treq
tmin
0.0625
0.28
UG-41 Weld Failure Path Analysis Summary
Weld strength calculations are not required for external pressure
62/74
UW-16 Weld Sizing Summary
Required weld Actual weld
size (in)
size (in)
Weld description
Status
0.0938
0.1313
weld size is adequate
Pad to shell fillet (Leg42)
0.067
0.0938
weld size is adequate
CO
D
EX E
W
AM A
PL RE
E
Nozzle to pad fillet (Leg41)
63/74
Tail lug
Minimum report
Geometry Inputs
Cylinder #1
Material
A36
Orientation
Longitudinal
Distance of Lift Point From Datum
6.25"
Angular Position
315°
Length, L
D
EX E
W
AM A
PL RE
E
Attached To
2"
Height, H
3"
Thickness, t
0.625"
Hole Diameter, d
0.625"
Pin Diameter, Dp
0.5"
Load Eccentricity, a1
0"
Distance from Load to Shell or Pad, a2 2"
Load Angle Normal to Vessel, b
0°
Load Angle from Vertical, f
0°
Welds
0.25"
CO
Size, tw
Intermediate Values
Load Factor
1.5000
Vessel Weight (new, incl. Load Factor), W
1,368.1 lb
Lug Weight (new), Wlug
1.1 lb
Distance from Center of Gravity to Top Lug, l1
56.7536"
Distance from Center of Gravity to Tail Lug, l2
18.9964"
Distance from Vessel Center Line to Tail Lug, l3
20.1875"
Allowable Stress, Tensile, st
19,980 psi
Allowable Stress, Shear, ss
13,320 psi
Allowable Stress, Bearing, sp
29,970 psi
Allowable Stress, Bending, sb
22,201 psi
Allowable Stress, Weld Shear, tallowable
13,320 psi
Allowable Stress set to 1/3 Sy per ASME B30.20 No
64/74
Summary Values
Required Lift Pin Diameter, dreqd 0.2213"
0.0684"
Lug Stress Ratio, sratio
0.15
Weld Shear Stress Ratio, tratio
0.24
Lug Design
Acceptable
Local Stresses WRC 537
Acceptable
CO
D
EX E
W
AM A
PL RE
E
Required Lug Thickness, treqd
65/74
Straight Flange on Ellipsoidal Head #2
ASME Section VIII Division 1, 2021 Edition
Component
Cylinder
Material
SA-516 70 (II-D p. 20, ln. 45)
Impact
Tested
Normalized
No
No
Fine Grain
Practice
PWHT
No
No
Maximize MDMT/
No MAWP
No
Design
Design
Pressure (psi) Temperature (°F)
Internal
100
650
External
15
650
Design
MDMT (°F)
-20
Static Liquid Head
Condition
Ps (psi)
Hs (in)
SG
Operating
Test horizontal
2.24
62
1
1.6
44.1875
1
Dimensions
Inner Diameter
36"
2"
Inner
Corrosion
Outer
D
EX E
W
AM A
PL RE
E
Length
Nominal Thickness
0.1875"
0"
0"
Weight and Capacity
New
Corroded
Weight (lb)
Capacity (US gal)
12.07
8.81
12.07
8.81
Radiography
Longitudinal seam
Top Circumferential seam
Seamless No RT
Full UW-11(a) Type 1
CO
Results Summary
Governing condition
Minimum thickness per UG-16
External pressure
0.0625" + 0" = 0.0625"
Design thickness due to internal pressure (t)
0.0983"
Design thickness due to external pressure (te)
0.1729"
Design thickness due to combined loadings + corrosion 0.0492"
Maximum allowable working pressure (MAWP)
192.38 psi
Maximum allowable pressure (MAP)
207.04 psi
Maximum allowable external pressure (MAEP)
18.38 psi
Rated MDMT
-55 °F
66/74
UCS-66 Material Toughness Requirements
Governing thickness, tg =
0.1875"
Exemption temperature from Fig UCS-66 Curve B =
-20°F
tr =
81.17 ⋅ 18
20,000 ⋅ 1 − 0.6 ⋅ 81.17
Stress ratio =
=
0.0732"
tr ⋅ E *
0.0732 ⋅ 1
=
=
tn − c
0.1875−0
0.3906
3,907 ⋅ 1
=
20,000 ⋅ 1
0.1954
Stress ratio longitudinal =
Reduction in MDMT, TR from Fig UCS-66.1 =
99.8°F
M DM T = max [M DM T − TR , − 55] = max [ − 20 − 99.8, − 55] = -55°F
Material is exempt from impact testing at the Design MDMT of -20°F.
Design thickness, (at 650 °F) UG-27(c)(1)
P ⋅R
S ⋅ E − 0.60 ⋅ P
+ Corrosion =
102.24 ⋅ 18
18,800 ⋅ 1.00 − 0.60 ⋅ 102.24
+ 0 = 0.0983"
D
EX E
W
AM A
PL RE
E
t=
Maximum allowable working pressure, (at 650 °F) UG-27(c)(1)
P =
S ⋅E ⋅t
18,800 ⋅ 1.00 ⋅ 0.1875
− Ps =
R + 0.60 ⋅ t
18 + 0.60 ⋅ 0.1875
− 2.24 = 192.38 psi
Maximum allowable pressure, (at 70 °F) UG-27(c)(1)
P =
20,000 ⋅ 1.00 ⋅ 0.1875
S ⋅E ⋅t
=
R + 0.60 ⋅ t
18 + 0.60 ⋅ 0.1875
= 207.04 psi
CO
External Pressure, (Corroded & at 650 °F) UG-28(c)
L
82
=
= 2.2543
Do
36.375
Do
36.375
=
= 210.4376
t
0.1729
From table G:
A = 0.000189
From table CS-2: B = 2,367.4126 psi
Pa =
4 ⋅ 2, 367.41
4⋅B
=
3 ⋅ (Do /t)
3 ⋅ (36.375/0.1729)
= 15 psi
Design thickness for external pressure Pa = 15 psi
ta = t + Corrosion = 0.1729 + 0 = 0.1729"
Maximum Allowable External Pressure, (Corroded & at 650 °F) UG-28(c)
67/74
L
82
=
= 2.2543
Do
36.375
Do
36.375
=
= 194.0000
t
0.1875
From table G:
A = 0.000213
From table CS-2: B = 2,674.7775 psi
Pa =
4 ⋅ 2, 674.78
4⋅B
=
3 ⋅ (Do /t)
3 ⋅ (36.375/0.1875)
= 18.38 psi
% Extreme fiber elongation - UCS-79(d)
EF E = (
Rf
50 ⋅ t
50 ⋅ 0.1875
18.0938
) ⋅ (1 −
) =(
) ⋅ (1 −
) = 0.5181 %
Rf
Ro
18.0938
∞
The extreme fiber elongation does not exceed 5%.
Condition
Operating, Hot & Corroded
Operating, Hot & New
Hot Shut Down, Corroded
Hot Shut Down, New
Empty, Corroded
Empty, New
Vacuum
Allowable Stress Before UG-23
Stress Increase ( psi)
Temperature Corrosion
( °F)
C (in)
Load
Pressure
P ( psi)
Req'd Thk Due
to Tension (in)
Req'd Thk Due to
Compression (in)
0
Seismic
390.48
0.0492
0.0484
650
0
Seismic
390.48
0.0492
0.0484
650
0
Seismic
0
0.0013
0.0006
8,919
650
0
Seismic
0
0.0013
0.0006
13,226
70
0
Seismic
0
0
0
13,226
70
0
Seismic
0
0
0
18,800
8,919
650
0
Seismic
187.8
0.0123
0.0139
18,800
8,919
650
0
Seismic
0
0.0012
0.0012
St
Sc
18,800
8,919
650
18,800
8,919
18,800
8,919
18,800
20,000
20,000
CO
Hot Shut Down, Corroded, Weight &
Eccentric Moments Only
D
EX E
W
AM A
PL RE
E
Thickness Required Due to Pressure + External Loads
68/74
Ellipsoidal Head #2
ASME Section VIII Division 1, 2021 Edition
Component
Ellipsoidal Head
Material
SA-516 70 (II-D p. 20, ln. 45)
Attached To
Cylinder #1
Impact
Tested
Normalized
No
No
Fine Grain
Practice
PWHT
No
No
Maximize MDMT/
No MAWP
No
Design
Design
Pressure (psi) Temperature (°F)
Design
MDMT (°F)
Internal
100
650
External
15
650
Condition
Ps (psi)
Hs (in)
SG
Operating
2.56
71
1
Test horizontal
1.6
44.1875
1
-20
Static Liquid Head
Dimensions
36"
Head Ratio
2
Minimum Thickness
Corrosion
D
EX E
W
AM A
PL RE
E
Inner Diameter
0.1007"
Inner
0"
Outer
0"
Length Ls f
2"
Nominal Thickness ts f
0.1875"
Weight and Capacity
New
Corroded
Weight (lb)1
Capacity (US gal)1
54.91
35.25
54.91
35.25
CO
Radiography
Category A joints
Seamless No RT
Head to shell seam
1 includes straight flange
Full UW-11(a) Type 1
Results Summary
Governing condition
external pressure
Minimum thickness per UG-16
0.0625" + 0" = 0.0625"
Design thickness due to internal pressure (t)
0.0983"
Design thickness due to external pressure (te) 0.1007"
Maximum allowable working pressure (MAWP) 102.55 psi
Maximum allowable pressure (MAP)
111.83 psi
Maximum allowable external pressure (MAEP) 15.02 psi
Straight Flange governs MDMT
-55°F
Design thickness for internal pressure, (Corroded at 650 °F) UG-32(c)(1)
t=
P ⋅D
2 ⋅ S ⋅ E − 0.2 ⋅ P
+ Corrosion =
102.56 ⋅ 36
2 ⋅ 18,800 ⋅ 1 − 0.2 ⋅ 102.56
+ 0 = 0.0983"
Maximum allowable working pressure, (Corroded at 650 °F) UG-32(c)(1)
69/74
P =
2⋅S ⋅E ⋅t
2 ⋅ 18,800 ⋅ 1 ⋅ 0.1007
− Ps =
D + 0.2 ⋅ t
36 + 0.2 ⋅ 0.1007
− 2.56 = 102.55 psi
Maximum allowable pressure, (New at 70 °F) UG-32(c)(1)
P =
2 ⋅ 20,000 ⋅ 1 ⋅ 0.1007
2⋅S ⋅E ⋅t
− Ps =
D + 0.2 ⋅ t
36 + 0.2 ⋅ 0.1007
− 0 = 111.83 psi
Design thickness for external pressure, (Corroded at 650 °F) UG-33(d)
Equivalent outside spherical radius
Ro = Ko ⋅ D o = 0.895 ⋅ 36.2014 = 32.401 in
0.125
0.125
=
Ro / t
32.401 / 0.100643
From Table CS-2: B
Pa =
t
=
4,829.0887 psi
4,829.0887
B
=
Ro / t
32.401 / 0.1006
=
= 0.000388
= 15 psi
0.1006"+Corrosion = 0.1006" + 0" = 0.1006"
D
EX E
W
AM A
PL RE
E
A =
The head external pressure design thickness (te) is 0.1006".
Maximum Allowable External Pressure, (Corroded at 650 °F) UG-33(d)
Equivalent outside spherical radius
Ro = Ko ⋅ D o = 0.895 ⋅ 36.2014 = 32.401 in
A =
0.125
0.125
=
Ro / t
32.401 / 0.1007
Pa =
=
4,831.7742 psi
CO
From Table CS-2: B
= 0.000388
4,831.7742
B
=
Ro / t
32.401 / 0.1007
= 15.0168 psi
The maximum allowable external pressure (MAEP) is 15.02 psi.
% Extreme fiber elongation - UCS-79(d)
EF E = (
Rf
75 ⋅ t
75 ⋅ 0.1875
6.2138
) ⋅ (1 −
) =(
) ⋅ (1 −
) = 2.2631 %
Rf
Ro
6.2138
∞
The extreme fiber elongation does not exceed 5%.
70/74
Seismic Code
Building Code: ASCE 7-22 ground supported
Risk Category (Table 1.5-1)
II
Site Class
C
Importance Factor, Ie
1.0000
Spectral Response Acceleration at short periods (% g), SS
100.00%
Adjusted Spectral Response Acceleration at short periods (% g), SMS
120.00%
Spectral Response Acceleration at 1 second period (% g), S1
40.00%
Adjusted Spectral Response Acceleration at 1 second period (% g), SM1 60.00%
Response Modification Coefficient from Table 15.4-2, R
3.0000
Long-period Transition Period, TL
12.0000
Redundancy factor, r
1.0000
User Defined Vertical Accelerations Considered
No
Hazardous, toxic, or explosive contents
No
Vessel Characteristics
Height
10.2584 ft
Weight
D
EX E
W
AM A
PL RE
E
Operating, Corroded 3,424 lb
Empty, Corroded 912 lb
Vacuum, Corroded 3,424 lb
Period of Vibration Calculation
Operating, Corroded 0.091 sec (f = 10.9 Hz)
Fundamental Period, T
Empty, Corroded 0.043 sec (f = 23.4 Hz)
Vacuum, Corroded 0.091 sec (f = 10.9 Hz)
The fundamental period of vibration T (above) is calculated using the Rayleigh method of approximation
−−−−−−−−−−
−−
∑(W i ⋅ yi2 )
g ⋅ ∑(W i ⋅ y i )
,where
CO
T =2⋅π ⋅√
W i is the weight of the ith lumped mass, and
y i is its deflection when the system is treated as a cantilever beam.
12.4 Basic Load Combinations for Allowable Stress Design
Load combinations considered in accordance with ASCE section 2.4.5:
D + P + Ps + 0.7E
= (1.0 + 0.14SDS)D + P + Ps + 0.7r QE
10. 0.6D + P + Ps + 0.7E
= (0.6 - 0.14SDS)D + P + Ps + 0.7r QE
8.
Parameter description
D
= Dead load
P
= Internal or external pressure load
Ps
= Static head load
E
= Seismic load
= Eh +/- Ev
= r QE +/- 0.2SDSD
Seismic Shear Reports:
Operating, Corroded
Empty, Corroded
Vacuum, Corroded
Base Shear Calculations
71/74
Seismic Shear Report: Operating, Corroded
Component
Elevation of Bottom Elastic Modulus E Inertia I Seismic Shear at Bending Moment at
Bottom (lbf )
Bottom (lbf -ft)
above Base (in)
(106 psi)
(ft4)
Ellipsoidal Head #1
112
26.0
*
28
23
Cylinder #2
76
26.0
0.1683
324
564
Cylinder #1 (top)
40
26.0
0.1683
576
1,972
Legs #1
0
29.0
0.0014
639
4,059
Cylinder #1 (bottom)
40
26.0
0.1683
50
21
40
26.0
*
45
17
Ellipsoidal Head #2
*Moment of Inertia I varies over the length of the component
Seismic Shear Report: Empty, Corroded
Component
Elevation of Bottom Elastic Modulus E Inertia I Seismic Shear at Bending Moment at
Bottom (lbf )
Bottom (lbf -ft)
above Base (in)
(106 psi)
(ft4)
112
29.4
*
26
22
Cylinder #2
76
29.4
0.1683
96
315
Cylinder #1 (top)
40
29.4
0.1683
134
713
Legs #1
0
29.0
0.0014
153
1,200
Cylinder #1 (bottom)
40
29.4
0.1683
7
4
29.4
*
7
3
Ellipsoidal Head #2
40
D
EX E
W
AM A
PL RE
E
Ellipsoidal Head #1
*Moment of Inertia I varies over the length of the component
Seismic Shear Report: Vacuum, Corroded
Component
Elevation of Bottom Elastic Modulus E Inertia I Seismic Shear at Bending Moment at
Bottom (lbf )
Bottom (lbf -ft)
above Base (in)
(106 psi)
(ft4)
112
Cylinder #2
76
Cylinder #1 (top)
40
Legs #1
0
Cylinder #1 (bottom)
40
Ellipsoidal Head #2
40
26.0
*
28
23
26.0
0.1683
324
564
26.0
0.1683
576
1,972
29.0
0.0014
639
4,059
26.0
0.1683
50
21
26.0
*
45
17
CO
Ellipsoidal Head #1
*Moment of Inertia I varies over the length of the component
11.4.4: Design spectral response acceleration parameters
Design earthquake spectral response acceleration at short period, SDS
SDS =
2 SMS
2 120.00
⋅
= ⋅
= 0.8000
3 100
3
100
Design earthquake spectral response acceleration at 1 s period, SD1
SD1 =
2 S M1
2 60.00
⋅
= ⋅
= 0.4000
3 100
3 100
11.6 Seismic Design Category
The Risk Category is II.
From Table 11.6-1, the Seismic Design Category based on SDS = 0.8000 is D.
From Table 11.6-2, the Seismic Design Category based on SD1 = 0.4000 is D.
This vessel is assigned to Seismic Design Category D.
12.4: Seismic Load Combinations: Vertical Term
Factor is applied to dead load.
72/74
Compressive Side: = 1.0 + 0.14 ⋅ SDS = 1.0 + 0.14 ⋅ 0.8000 = 1.1120
= 0.6 − 0.14 ⋅ SDS = 0.6 − 0.14 ⋅ 0.8000 = 0.4880
Tensile Side:
Base Shear Calculations
Operating, Corroded
Empty, Corroded
Vacuum, Corroded
Base Shear Calculations: Operating, Corroded
Paragraph 15.4.4: Period Determination
Fundamental Period is taken from the Rayleigh method listed previously in this report.
T = 0.0915 sec .
12.8.1: Calculation of Seismic Response Coefficient
Cs =
SDS
R
Ie
=
0.8000
= 0.2667
3.0000
1.0000
D
EX E
W
AM A
PL RE
E
Cs is the value computed below, bounded by Cs Min and Cs Max:
Cs Min is calculated with equation 15.4-1 and shall not be less than 0.03; in addition, if S1 >= 0.6g, Cs Min shall not be less than eqn
15.4-2.
Cs Max calculated with 12.8-4 because (T = 0.0915) <= (TL = 12.0000)
C s Min = max [0.044 ⋅ SDS ⋅ Ie ,0.03] = max [0.044 ⋅ 0.8000 ⋅ 1.0000,0.03] = 0.0352
C s Max =
SD1
R
T ⋅(I )
e
=
0.4000
0.0915 ⋅ ( 1.0000 )
3.0000
C s = 0.2667
= 1.4576
CO
12.8.1: Calculation of Base Shear
V = C s ⋅ W = 0.2667 ⋅ 3,423.8584 = 913.03 lb
12.4.2.1 Seismic Load Combinations: Horizontal Seismic Load Effect, Eh
QE
=V
Eh
= 0.7 ⋅ ρ ⋅ Q E (Only 70% of seismic load considered as per Section 2.4.5)
= 0.7 ⋅ 1.0000 ⋅ 913.03
=639.12 lb
Base Shear Calculations: Empty, Corroded
Paragraph 15.4.2: T < 0.06, so:
V
= 0.30 ⋅ SDS ⋅ W ⋅ Ie
= 0.30 ⋅ 0.8000 ⋅ 912.0975 ⋅ 1.0000
=218.90 lb
12.4.2.1 Seismic Load Combinations: Horizontal Seismic Load Effect, Eh
73/74
QE
=V
Eh
= 0.7 ⋅ ρ ⋅ Q E (Only 70% of seismic load considered as per Section 2.4.5)
= 0.7 ⋅ 1.0000 ⋅ 218.90
=153.23 lb
Base Shear Calculations: Vacuum, Corroded
Paragraph 15.4.4: Period Determination
Fundamental Period is taken from the Rayleigh method listed previously in this report.
T = 0.0915 sec .
12.8.1: Calculation of Seismic Response Coefficient
Cs =
SDS
R
Ie
=
0.8000
= 0.2667
3.0000
1.0000
D
EX E
W
AM A
PL RE
E
Cs is the value computed below, bounded by Cs Min and Cs Max:
Cs Min is calculated with equation 15.4-1 and shall not be less than 0.03; in addition, if S1 >= 0.6g, Cs Min shall not be less than eqn
15.4-2.
Cs Max calculated with 12.8-4 because (T = 0.0915) <= (TL = 12.0000)
C s Min = max [0.044 ⋅ SDS ⋅ Ie ,0.03] = max [0.044 ⋅ 0.8000 ⋅ 1.0000,0.03] = 0.0352
C s Max =
SD1
T ⋅ ( IR )
e
=
0.4000
0.0915 ⋅ ( 3.0000
)
1.0000
C s = 0.2667
= 1.4576
12.8.1: Calculation of Base Shear
CO
V = C s ⋅ W = 0.2667 ⋅ 3,423.8584 = 913.03 lb
12.4.2.1 Seismic Load Combinations: Horizontal Seismic Load Effect, Eh
QE
=V
Eh
= 0.7 ⋅ ρ ⋅ Q E (Only 70% of seismic load considered as per Section 2.4.5)
= 0.7 ⋅ 1.0000 ⋅ 913.03
=639.12 lb
74/74