INSPECT
Highlighted Features
FEA-Clips
- FEA is available for clips on heads and shells
Clip FEA is now available for clips attached to cylinders, hemi heads, and ellipsoidal heads.New options available with Clip FEA
- Structural shapes are available.
- A torsional moment, Mt can be defined for analysis.
- A rotation angle is available.
- Offset orientation available when placed on a shell.
- A pad corner radius is available.
[78609]
- FEA is available for clips on heads and shells
FEA-Nozzles
General
- ASME VIII, Division 1 2025 Edition
(1) The materials database now includes all ASME Section II, Part D 2025 Edition data for both Customary and Metric editions. This includes all materials from Tables 1A, 1B and 3, and any changes to Table U (tensile strength), Table Y-1 (yield strength), the physical properties tables, and vacuum chart tabular values.
(2) Table U-3: ASME B16.5 and B16.47 flanges are now updated to use the 2025 editions.
(3) UG-14: Pressure parts machined from bar material now have the option to apply a 50% reduction to the "B" value for external pressure or compressive allowable stress and the yield and tensile strengths as applicable per Table UG-14-1, regardless of size, in addition to the specified allowable stress.
(4) UG-39: Bolt circle to inner edge of opening ligament check added for openings on bolted covers with full face gaskets.
(5) UG-99: The Hydrostatic Test report now includes a Common Elements Subject to Collapse due to External Pressure table evaluating each common component's Limiting Test Pressure (LTP) per UG-99(e).
(6) UG-100: The Pneumatic Test report now includes a Common Elements Subject to Collapse due to External Pressure table evaluating each common component's Limiting Test Pressure (LTP) per UG-100(d).
(7) UG-116(a)(1)(-a): Option to mark “USER” above nameplate Certification Mark is no longer available.
(8) Figures UCS-66 and UCS-66M
- SA-193 B5, SA-193 B16 with a diameter between 64 mm and 175 mm, SA-307 B, SA-325 1, and SA-449 bolting material Impact Test Exemption Temperature is updated to -29°C from -30°C.
- SA-193 B16 bolting with a diameter of 2.5 inches (64 mm) or less now has an Impact Test Exemption Temperature of -55°F (-29°C).
(9) UNF-65(b): A warning is issued in the Deficiencies Summary for precipitation-hardening nickel alloys UNS N07718 and UNS N07750 to be impact tested in accordance with UHT-6 at no warmer than MDMT.
(10) Table UHA-32-2: Alloy UNS S44400 and vessels constructed from SA-479 405 bar material (UNS S40500) are now exempt from postweld heat treatment.
(11) Mandatory Appendix 2: Design requirements in 2-4 and Section VIII, Division 2, Part 4.16 are now used in lieu of those previously required in Mandatory Appendix 2. Ring type loose, slip on loose, and slip on integral flanges are not available in the 2025 Edition and later. Full face gasket flange design per Taylor Forge Bulletin 502, and flanges designed per Nonmandatory Appendix Y do not reflect the 2025 Edition changes at this time.
- Ring type flanges are available per Table 4.2.9 Details 2, 4, 9, 10, and 11.
- Weld neck integral flanges are available per Figure 4.16.1 sketch (c), and Table 4.2.9 Details 6 and 7.
- Welded slip-on flanges are available per Table 4.2.9 Details 1, 3, and 12.
- Lap joint and split loose flanges are available per Figure 4.16.5 and Table 4.2.9 Detail 5.
- Reverse weld neck integral flanges are available per Figure 4.16.6.
- Reverse ring type flanges are available per Table 4.2.9 Details 2 and 4, and Figure UW-13.2 sketches (c) and (d).
(12) Jacketed Vessels: Section VIII, Division 2, Part 4.11 rules are now used in lieu of those previously required in Mandatory Appendix 9, except as noted in Part UJV-1.
(13) Vessels of Noncircular Cross Section: VIII, Division 2, Part 4.12 rules are now used in lieu of those previously required in Mandatory Appendix 13, except as noted in Part UNC-1.
(14) Mandatory Appendix 14: Section VIII, Division 2, Part 4.6.4 rules are now used in lieu of those previously required in Mandatory Appendix 14, except as noted in Mandatory Appendix 14-1.
(15) ASME Forms U-1, U-1A, U-2, and U-2A now include the updated month and year, (07/25), and have replaced the term “his/her” with “the Inspector’s.” For combination units, the limiting test pressure for common elements subject to collapse due to external pressure is now included in the “Remarks” fields.
(16) Half-Pipe Jackets: Section VIII, Division 2, Part 4.11.6 rules are now used in lieu of those previously required in Nonmandatory Appendix EE, except as noted in EE-1. [79962]
- ASME VIII, Division 1 2025 Edition
Lateral Force
- Ability to add vertical, transverse, and longitudinal acceleration or forces to saddle supported horizontal vessels has been added
The ability to specify vertical, transverse, and longitudinal loads individually or simultaneously in combination on horizontal vessels is now available. These loads can be evaluated by activating the Consider Operating Loads options switch in the Saddle Design Screen 2 dialog. Operating loads can be specified as load coefficients or direct loads by selecting the respective option radio button in the Operating Load Case Acceleration factors dialog.Considerations for using load coefficients:
- This multiplier is applied to the weight in each load case independently.
- The magnitude of the applied force can vary in each load case (e.g. new versus corroded cases).
- This option is best for simulating acceleration or loadings that are a function of the vessel weight.
Considerations for using direct loads:
- This force is applied to each load case directly, with no change in magnitude.
- This option is best for simulating external forces, or loads that are static and not a function of the vessel weight.
- Ability to add vertical, transverse, and longitudinal acceleration or forces to saddle supported horizontal vessels has been added
Platform/Ladders
- The ability to add platforms to horizontal vessels has been added
Platforms on horizontal vessels are now active. To add a platform, saddles or shipping saddles must first be present. Multiple platforms (up to 10) are supported. Note: the option for Eccentric Offset is allowed for visual platform placement; however, eccentric loading is not considered and all calculations assume the platform's center of gravity is located on the vessel's centerline. [1439]
- The ability to add platforms to horizontal vessels has been added
Rings
Shipping Saddles
- Option to include Vertical Loads in Shipping Saddle calculations
An option is now available to include Vertical Loads in Shipping Saddle calculations. The option Include in Shipping Saddle Analysis can be found in the Edit Vertical Load dialog. When active, the Vertical Load will be included in Shipping Saddle calculations. If Shipping Saddles are not present the load will be included in normal Saddle reactions due to shipping calculations if the Consider Shipping Loads option is active in the Saddle Design Screen 2 dialog. Note that in either case for a Vertical Load to be included in Saddle calculations, that Present when Vessel is Empty must also be active for that load. [64508]
- Option to include Vertical Loads in Shipping Saddle calculations
Wave Motion
- Wave motion can now be investigated for horizontal vessels supported by saddles
Wave motion can be evaluated for horizontal vessels by activating the Consider Operating Loads options switch in the Saddle Design Screen 2 dialog. Operating loads can be specified as load coefficients or direct loads by selecting the respective option radio button in the Operating Load Case Acceleration factors dialog.Considerations for using load coefficients:
- This multiplier is applied to the weight in each load case independently.
- The magnitude of the applied force can vary in each load case (e.g. new versus corroded cases).
- This option is best for simulating acceleration or loadings that are a function of the vessel weight.
Considerations for using direct loads:
- This force is applied to each load case directly, with no change in magnitude.
- This option is best for simulating external forces, or loads that are static and not a function of the vessel weight.
- Wave motion can now be investigated for horizontal vessels supported by saddles
Additional Features
API 579 Part 4
ASME B16.9 Tees
- ASME B16.9 reducing tees available for nozzle connections
ASME B16.9 reducing tees are now available for nozzle connections and can be specified on the second page of the B16.9 Tee dialog using the Size dropdown menu. [70453]
- ASME B16.9 reducing tees available in B31.3 and B31.4 piping documents
ASME B16.9 reducing tees are now available in B31.3 and B31.4 piping documents and can be specified on the second page of the B16.9 Tee dialog using the Size dropdown menu. [60845]
- ASME B16.9 reducing tees available for nozzle connections
ASME PCC-1
- Appendix O flange yield strength in joint component approach
The flange maximum permissible bolt stress is no longer reduced by the ratio of flange yield stress at operation to yield stress at assembly, SfmaxSyo/Sya, for flanges calculated using Section VIII 2025 Edition and later. This may result in a higher initial bolt torque in order to minimize the risk of joint leakage, while risking possible permanent deformation. [79054]
- Appendix O flange yield strength in joint component approach
ASME/ANSI Flanges
Cover Page
- Long date format
The option switch Use Long Date Format is now available in the Cover Page Settings dialog. The long date format matches the region setting of the computer. [78706]
- Option to add Revision History is now available
Display Revision Table check box is now available in the Cover Page Settings dialog, which when activated will display the Revision Table on the Cover Page. [76260]
- Long date format
Elbows
FEA-Clips
FEA-Nozzles
- Elastic Analysis Summary hyperlinks.
The Load Case names in the Elastic Analysis Summary are now hyperlinks to the FEA plot. [78752]
- Elastic Analysis: Triaxial Stress Limit
The option to Enable Triaxial Analysis (Div. 2 Part 5.3) has been added to the FEA load input dialog. When enabled, an Elastic Analysis: Triaxial Stress Limit table is included in the report. [78350]
- FEA component table cleanup
The component tables in the FEA report have been cleaned up by removing unnecessary data. [79767]
- FEA overstressed condition
The FEA results summary was updated to reflect overstressed as a yes/no condition. [78143]
- FEA: Energy Norm Stress Error
Stress Error is now calculated using von Mises energy norm error. Previously this was determined using direct nodal stress error. [78642]
- Inner and Lower Fillet weld improvements
The Inner and Lower Fillet welds are no longer set to the same value for meshing. [79723]
- Notes indicating why FEA analysis cannot be performed on specific nozzles
The FEA option in the Load Analysis Type dropdown menu in the WRC/FEA dialog has been removed for nozzles not currently supported for FEA analysis, and a note indicating why a specific nozzle cannot have FEA analysis performed has been added to the WRC/FEA dialog. [78251]
- Nozzle loads in the Results Page
The nozzle loads are now included in the Results Page which is accessed through the FEA Pane. [78846]
- Sortable FEA results table
The 5.2.2 Governing Elastic Analysis Results table now has columns that are sortable. [79744]
- Elastic Analysis Summary hyperlinks.
Forms
- ASME U-3 Form now available
The ASME U-3 Form is now available in Forms > ASME U-Forms. [79325]
- Material designation options
A material with a unique specification number and no type or grade will now appear without a UNS number after the material specification number. The UNS number can be manually added when editing the forms.Materials specified using the ANSI/ASTM designation will now appear in the ASME forms with that designation unless either of two new option switches are activated, changing the material name to the ASME specification.
- Forms > Form Settings and Defaults > Use Equivalent ASME Specifications for ANSI materials: This option switch, when activated, will use the ASME equivalent designation of all materials specified in the ASME forms.
- Select the Associated ASME Material: This option switch, located in the Nozzle dialog for Long Weld Neck and Variable Thickness nozzles, will use the ASME material designation in the ASME forms for that nozzle only.
- Option now available to fill empty form fields with user defined text
An option is now available to fill empty form fields with user defined text. This option for Custom “N/A” test for blank fields appears when the Fill blank fields with “N/A” text option switch is active in the Form Settings and Defaults dialog. [78630]
- ASME U-3 Form now available
Hydrotest
- Common component's MAEP when MAP isn't considered
The Common Components External Pressure Summary Report table now reports the cold MAEP for common components when the MAP condition isn't considered. Previously, when the Calculate MAP Set Mode option switch was inactive, the summary table would report the shell side internal design pressure as the common component's MAEP. [78728]
- Common component's MAEP when MAP isn't considered
Metal Loss
- API 579 Flaw tsl due to compressive stress no longer combined with required thickness due to internal pressure
API 579 flaw required thickness for supplemental loads due to compressive stress is no longer combined with required thickness due to internal pressure in minimum required thickness and MAWP calculations. In those cases, the required thickness for supplemental loads due to tensile stress is now used. [79982]
- API 579 Flaw tsl due to compressive stress no longer combined with required thickness due to internal pressure
Nozzles
PDF Reports
Set Mode Options F7
- RCB-2.3.1 Thinning Constant
The thinning constant, C, located in Set Mode Options > General 2 now applies to newly created U-tube heat exchangers. In addition, the default TEMA edition may be set in a drop-down box under Calculation Options. Previously, the thinning constant only set the default value used in half pipe jackets. [74153]
- RCB-2.3.1 Thinning Constant
Structural Sections
- Components using structures now display all structures of the selected type
Components using structural sections can now display all structural sections of a given type if the Show all option switch in the component dialog below the list of structural sections is active. The list can also display only structural sections of the working set, as was the case in previous builds, if the Show all option switch is deactivated. A structural section, chosen not from the original working set, will be added to the working set after the component’s dialog is closed.
The affected dialogs include:
- Ring Structural Member dialog
- Support Legs dialog
- Saddle Stiffener Rings dialog
- Top Angle page of the Tank dialog
- Stiffening Rings page of the Tank dialog
- Vessel Wizard Legs dialog
- Rings page of the Vessel Wizard Defaults dialog
- Filter function now available
A search box and a combo box is now available in the Structural Sections dialog, Materials > Structures in the main toolbar, allowing the list of structures to be filtered. The search box highlights entries in User Selected Subset when the text input into the search box matches any part of a Section Description for any structure. A value other than “All” input into the combo box will filter and only display structures in the User Selected Subset that match the type selected in the combo box. [78664]
- Components using structures now display all structures of the selected type
Toolbars
- Attachments toolbar - Clips, lift lugs, and nameplates
A new attachments toolbar is now available for clips, lift lugs, and nameplates. In addition, clips may now be placed with Quick Design Mode where the structure type, size, and rotation can be specified. When locating on a head, the clip orientation can be toggled between radial and hillside using the tab key. [75699]
- New Attachment Toolbar
A new Attachment Toolbar contains buttons for Clips, Lugs, and Nameplates. [79046]
- Attachments toolbar - Clips, lift lugs, and nameplates
WRC 107
WRC 537
Welded Covers
XML
Heat Exchanger
ASME/ANSI Flanges
- Appendix 2 / Part 4.16 calculations now available for ASME B16.5/16.47 weld neck flanges with pass partitions
ASME B16.5/16.47 weld neck flanges that seat pass partition rib gasket(s) in a heat exchanger may now be calculated per Appendix 2 / Part 4.16 (see Part 4.16.2.5 and UHX-4). Two new controls are now available near the bottom of the Select ASME B16.5/16.47 Flange dialog for applicable flanges:- Activate the Perform Appendix 2 calculation option switch to enable the Custom Flange Dimensions button.
- Activate the Custom Flange Dimensions button to view and edit the flange's radiography, rigidity, and hub length.
- Appendix 2 / Part 4.16 calculations now available for ASME B16.5/16.47 weld neck flanges with pass partitions
Heat Exchanger
- ASME Section VIII, Division 1 and Division 2 2025 Edition
(1) Part 4.18 updated tubesheet equations
- The channel pressure loading equation, ωc, in Step 4 for Part 4.18.7.4 and Step 5 for Parts 4.18.8.4 and 4.18.9.4, is now rewritten to distribute the channel characteristic length, βc, to terms inside of the brackets. The channel pressure loading value does not change.
- Equations for the channel coefficients Cmδ, Cmθ, Cqδ, and Cqθ for tubesheets with a concentric conical channel attached have been combined with the channel coefficient denominator for conical channels, CC, equation from the 2023 addenda and simplified. There are no numerical changes to these channel coefficients.
(2) Hydrotest and Pneumatic test stress limits
- Equations 4.18.250 and 4.18.252 are now used for the determination of the shell membrane plus bending stress or the channel membrane plus bending stress respectively when the membrane stress for that component is greater than two-thirds yield stress of the component but less than the test condition load factor, βT, multiplied by the yield stress of the component.
- The membrane stress limit for corners and tori of flexible shell elements designed per 4.18.12 now meet the requirements of 4.1.6.2 instead of the stress limits of Table 4.18.5.
- The membrane plus bending stress limit for the annular plates and straight flanges of flexible shell elements designed per 4.18.12 now meet the requirements of 4.1.6.2 instead of the stress limits of Table 4.18.5.
(3) Tube-to-Tubesheet Welds
- The yield strength for tubesheet material at the ambient temperature, Sy,a, and yield strength for tube material at the ambient temperature, Sy,t,a, are now used in place of the respective yield strengths at design temperatures in the equations for determining the tube expanding pressure, Pe, and the interface pressure between the tube and tubesheet that remains after expanding the tube, Po.
- Tube-to-tubesheet joints are now indicated in the Radiography Summary as Type “9” and Category “F” for the tube circumferential seams.
(4) Bellow Expansion Joints: Section VIII, Division 2, Part 4.19 rules are now used in lieu of those previously required in Mandatory Appendix 26, except as noted in Part UEB-1
(5) Flexible Shell Elements: Section VIII, Division 2, Part 4.20 rules are now used in lieu of those previously required in Mandatory Appendix 5, except as noted in Part UEJ-1 [79964]
- Heat exchanger U-Tube Bend Schedule available
A U-Tube Bend Schedule is now available for U-tube heat exchangers. To generate this report, the Include optional tube layout (required for solid model) option switch must be activated in the Tubes and Shell page of the Heat Exchanger Wizard or the Heat Exchanger dialog. [57869]
- ASME Section VIII, Division 1 and Division 2 2025 Edition
TEMA
- TEMA 11th Edition is now available
- The metric equivalent values have been updated throughout where checks are applied.
- RCB-3.1.3 - Minimum shell thicknesses by nominal shell diameter have been updated.
- The required tube wall thickness for a U-bend is now calculated using the mean diameter of the bend instead of the radius, and the typical values for the thinning constant C have been adjusted so that the resulting thickness has not changed.
- Groove weld size inputs and full penetration groove weld option switches are now available for pass partition plates. This change applies retroactively to all editions of TEMA and is not isolated to the 11th edition.
- Tables updated:
- D-5M
- D-7M
[77113]
ASME/ANSI Flanges
Bolts
- TEMA Table D-5
The bolting data from TEMA Table D-5(M) is now the default bolt series for flanged connections for TEMA designed heat exchangers. Tables D-5 and D-5M are available to select in Set Mode Options > Defaults > Flanges > Bolt Defaults and may be used with ASME designed heat exchangers and vessel flanges. The Table D-5(M) bolt data changes to match the TEMA edition set on the Heat Exchanger -> General Options page, or in Set Mode Options -> Calculation -> General 2. [78823]
- TEMA Table D-5
Heat Exchanger
- Conical channel pass partition inputs
The pass groove depth input is now available in the channel cover dialog when the channel is a reducer. Additionally, the gasket factors m and y, effective seating width br, and total rib length rl inputs are now available on the Pass Partition page when the tubesheet is integral with the channel and the channel is a reducer. [78923]
- Tube bundle and attachments weight table
The Weight Summary now includes a separate table for the tube bundle. This table includes auxiliary bundle components such as tie rods, impingement devices, seal rods and bars, dummy tubes, and skid bars, which are now also included in weight-dependent calculations. To generate this report, the Include optional tube layout (required for solid model) option switch must be activated in the Tubes and Shell page of the Heat Exchanger Wizard or the Heat Exchanger dialog. [78849]
- Conical channel pass partition inputs
Pass Partition
- Remove option to not include pass partitions
The option switch Do not include pass partitions in multi-pass exchangers is no longer available in Set Mode Options > Defaults > Exchanger Design for new heat exchanger files.The option switch remains active if used in existing heat exchanger files, and a deficiency is reported in the Deficiency Summary to indicate that flange bolt load calculations do not consider pass partition gaskets. For these files, the option switch becomes unavailable once it is deactivated.
[78727]
- Remove option to not include pass partitions
TEMA
- Class B minimum tubesheet thickness
A deficiency is now issued in the Deficiencies Summary in rating mode when a TEMA class B heat exchanger with expanded tubes has a tubesheet thickness less than 3/4" per B-7.1.1. In design mode, the tubesheet thickness is increased to meet the minimum plus corrosion and pass groove depth. [78636]
- RB-5.3.1 design temperature limit
A deficiency is now issued in the Deficiencies Summary if a design temperature exceeding 375° F (190° C) is used for an externally sealed floating tubesheet heat exchanger. [78632]
- RCB-3.1.3 check for channel reducer cylinders
A deficiency is now reported in the Deficiencies Summary if the channel reducer small or large end cylinder thickness is less than required per the RCB-3.1.3 minimum shell thickness tables. [78672]
- Class B minimum tubesheet thickness
Tube Bundle Removal
Tube Layout
- Calculate total rib length button
Calculate from layout buttons are now available on the Pass Partition page of the Heat Exchanger dialog, next to the front and rear pass partition inputs for total rib length, rl. The buttons are only available when the Include optional tube layout option switch is active on the Tubes and Shell page. [58213]
- Calculate total rib length button
- TEMA 11th Edition is now available
Division 2 2007 Edition and Newer
General
- ASME VIII, Division 2 2025 Edition
(1) The materials database now includes all ASME Section II, Part D 2025 Edition data for both Customary and Metric editions. This includes all materials from Tables 5A, 5B and 3, and any changes to Table U (tensile strength), Table Y-1 (yield strength), and the physical properties tables.
(2) Class 1 vessels are no longer available. Existing Class 1 vessels used in the 2025 Edition will use compatible materials from ASME Section II, Part D Tables 5A and 5B.
(3) Table 1.1: ASME B16.5 and B16.47 flanges are now updated to use the 2025 editions.
(4) A-Forms: ASME Forms A-1 and A-2 now include the updated month and year, (07/25), have replaced the term “his/her” with “the Inspector’s,” and removed the “Class” field. For combination units, the limiting test pressure for common elements subject to collapse due to external pressure is now included in the “Remarks” fields.
(5) 2-F.1: Option to mark “USER” above nameplate Certification Mark is removed.
(6) 3.2.5.2: Pressure parts machined from bar material now have the option to apply a 50% reduction to the allowable compressive stress and the yield and tensile strengths as applicable per Table 3.1, regardless of size, in addition to the specified allowable stress. The reduction switch is available through the Material Properties dialog.
(7) Table 3.5: SA-193 B16 bolting with a diameter of 2.5 inches (64 mm) or less now has an MDMT Without Impact Testing of -55°F (-29°C).
(8) Annex 3-F: The previous code edition equation, 3-F.1, has been revised and includes a new term, Sac, whose denominator is set to the minimum value of the modulus of elasticity between ambient and assessment temperature. Additionally, Table 3-F.1 has been updated to now list values of Young’s Modulus for the smooth bar fatigue curves.
(9) 4.1.1.3: A deficiency is now reported in the Deficiencies Summary when a nozzle, which is not integrally reinforced, is used on a vessel operating at a temperature where the allowable stress is governed by time dependent properties.
(10) Table 4.1.2: The load combination addressing overturning in foundation design is no longer investigated.
(11) 4.4.2: The allowable stress increase factor of 1.2 for the combination of design loads and earthquake loading and wind loading may no longer be applied to Fbha or Fba.
(12) 4.4.6.1(c): The diameter used to determine the thickness for external pressure of conical shells has changed from the average diameter to the large-end diameter.
(13) 4.4.12.2(c): The axial compressive stress due to bending moment per 4.4.12.2(c), Fba, is now set equal to Fxa for all values of λc. Previously, Fba was set equal to Fca for λc > 0.15 and Fxa for λc ≤ 0.15.
(14) 4.5.4.1: Nozzle neck minimum required thickness now uses the parent component's required minimum thickness instead of the parent component's corroded thickness.
(15) Part 4.5.7: New equations have been added for tilted nozzles in a cylindrical shell.
(16) Part 4.5.9: New equations have been added for nozzles on a conical shell with perpendicular or parallel orientations.
(17) 4.16: Design rules for flanged joints
- Flanges designed per Table 4.2.9 Details 2 and 4 are now calculated as integral type flanges.
- Welded slip-on flanges are now available per Table 4.2.9 Details 1, 3, and 12. Flange stress factors FS and VS are calculated per Table 4.16.5.
- Reverse Ring Type flanges designed per Table 4.2.9 Details 2 and 4 are now calculated as reverse integral type flanges.
- Loose type reverse flanges per Figure 4.16.7 are now available.
- Gasket facing sketches 2, 3, 4, and 5 are no longer available, and sketch 6 is now designated as sketch 2 per Table 4.16.3.
(18) 6.6.5.2: PWHT is no longer required for SA-353 and SA-553, Type I materials with a nominal thickness over 2 in. (50 mm) provided the requirements of 6.6.5.2(f) are met.
(19) Table 6.17: Note 2 is no longer applicable for SA-553, Types I, II, and III.
(20) 8.1.3: The Hydrostatic Test report and Pneumatic Test report now include a Common Elements Subject to Collapse due to External Pressure table evaluating each common component's Limiting Test Pressure (LTP) per Part 8.1.3.3. [79963]
- ASME VIII, Division 2 2025 Edition
API Storage Tank
API 650
- Annex J - shop assembled storage tanks now available
API 650 Annex J - Shop Assembled Storage Tanks are now available. This option can be activated in the General Information page of the tank dialog. If annex J is active, the option for a flanged roof is also available in the Tank Roof tab of the tank dialog. [77589]
- API standard 650 welded tanks for oil storage fourteenth edition now available
The design of Welded Tanks for Oil Storage per API Standard 650, Fourteenth Edition, is now available. [79653]
- Annex J - shop assembled storage tanks now available
Annex F
Solid Model
API 650
- Anchor chair weld size equation allowable stress
The anchor chair weld size equations per API 650 section 5.12.7 now consider the anchor chair allowable as the lesser of the stress allowable from API 650 or AISC 360, the value used in the anchor chair top plate design equations. [79637]
- API 650 - 5.11.4 wind sliding resistance check
INSPECT now performs two stability checks for sliding due to wind. The first check, based on section 5.11.2.1's first uplift criteria, considers both vertical and horizontal wind loads and applies a 0.6 wind load factor to both. The second check, based on 5.11.2.1's third uplift criteria, considers only horizontal wind pressure and applies a 1.0 wind load factor. [78951]
- Exclude corrosion allowance on nozzle welds
Nozzle welds are now sized based on the new dimensions. [78811]
- Insulation in weight to resist tank overturning
An option switch is now available in the Site Conditions - Wind and Seismic page of the tank dialog to Include Insulation in Weight to Resist Tank Overturning. If the switch is active, insulation weight is included in the W1 and W2 terms in the Table 5.20a/b uplift loads and the DLS and DLR terms in the 5.11.2 self-anchored overturning checks. [79095]
- Lining and Insulation echo sections added for tank components
Lining and insulation thicknesses, densities, and weights are now reported in the Tank Roof, Shell Courses, and Tank Bottom reports if attached to those components. [78797]
- Live load now included in 5.2.2(e)(1) and 5.2.2(e)(2) gravity load combinations for roof thickness equations in 5.10.5.1 and 5.10.6.1
Roof live load, Lr, is now included in the API 650 section 5.2.2(e)(1) and 5.2.2(e)(2) gravity load combinations when calculating roof required thickness per 5.10.5.1 and 5.10.6.1. [79636]
- Manways in the tank shell and roof can now have their ID set to the OD dimension for use in certain tables
Manways in the tank shell and roof can now have their ID set to the OD dimension for use in tables 5.3a, 5.3b, 5.4a, 5.4b, 5.5a, 5.5b, 5.6a, 5.6b, 5.13a, and 5.13b. [79096]
- Roof Uplift
Uplift on the tank roof due to wind is now calculated using ASCE 7's Components & Cladding (C&C) method when the specified Wind Pressure Method is "5.2.1(k)(1)(a) to (c): National Standards" and the specified Wind Code is an ASCE standard (e.g. not purchaser-specified). These inputs can be found in the Site Conditions - Wind and Seismic tab of the Storage Tank dialog. This uplift pressure represents a vertical force acting on the roof's horizontally projected area and is used to calculate MWR, defined by INSPECT as the moment about the shell-to-bottom joint due to vertical wind pressure. It is labeled "Vertical" in the Wind Pressure (WP) Calculations section of the Wind Code Report. [78935]
- Shell weight in self-anchored overturning moment checks
The shell weight, DLS, used in the API 650 Section 5.11.2 self-anchored tank overturning checks, now has corrosion removed from the weight as it is more conservative. [79044]
- Specify pressure in inches of water
Tank internal and external pressure values can now be set using Inches of Water, inH2O. When the Specify in Inches of Water option switch is activated in either the Tank General Information page of the Tank dialog or in Set Mode Options > Defaults > Storage Tank Design > Design Information, design and operating pressures for both internal and external pressure can now be specified using Inches of Water in the Tank dialog.
The pressures specified in inH2O will also appear in the echo sections and summaries of the following reports: Tank Summary, Foundation Load Summary, Tank Roof report, and the Shell Courses report.
[78560]
- Specify shell course height in inches
Shell course heights can now be specified using inches by activating the Specify Shell Height in Inches option switch in the Shell Courses page of the Tank dialog. [78559]
- Tank external pressure calculation no longer performed when external pressure is less than 1 inch of water
Tank external pressure calculation no longer performed when external pressure is less than 1 inch of water. [78892]
- Tank height and diameter are now specified in feet and inches
Storage tank height, diameter, Design Liquid Level, and Minimum Operating Liquid Level now have separate entries for foot and inch dimensional values, in the General Information page of the Storage Tank dialog, when using U.S. Customary units. [79057]
- Tank nozzle area of reinforcement term A1 updated
Tank nozzle area of reinforcement term, A1, has now been updated so that if the limit of reinforcement for the nozzle spans multiple shells with differing thicknesses, only the limits located on the thickest of those shells is included in A1. [80018]
- Tank sketch report now available
An API 650 Tank Sketch report is now available when running the calculations. It displays basic dimensions for the tank including diameter, shell dimensions, and design liquid level. [79055]
- Anchor chair weld size equation allowable stress
ASME/ANSI Flanges
MDMT
Rings
Tank Bottom
- Minimum operating liquid level input now available for V.9.1 tank bottom external pressure calculations
A minimum operating liquid level input is now available in the General Information page of the Storage Tank dialog. This value is now included in the Annex V.9.1 tank bottom external pressure calculations. [78869]
- Tank shell to bottom weld check in the corroded condition
The tank shell to bottom weld check per API 650 Section 5.1.5.7 is no longer performed in the corroded condition. [78999]
- Minimum operating liquid level input now available for V.9.1 tank bottom external pressure calculations
Tank Roof
- Input for additional weight supported by tank shell now available
An input for additional weight supported by the tank shell is now available in the Shell Courses page of the tank dialog. This weight is applied at the tank center of gravity [78644]
- Nozzle cut out weight now removed from the tank roof dead load in 5.2.2 load combinations
The nozzle cut out weights are now removed from the tank roof dead load used in the API 650 Section 5.2.2 load combination equations. [78699]
- WRC 537 hollow attachment for nozzle loads
The WRC 537 - Hollow attachment and WRC 537 - Solid attachment options are now available in the WRC 537 Load Cases dialog for nozzles attached to dome or umbrella type roofs. Previously, the nozzle was assumed to be a rigid attachment. [80042]
- Input for additional weight supported by tank shell now available
Tank Shells
- Tank diameter input for shell courses
Options are now available in the Shell Courses page of the Tank dialog to set nominal tank diameter to the bottom shell inner diameter, center-line diameter, or outer diameter. The shell can also be set to have the shell courses match each other's inner diameters, center-line diameters, or outer diameters. Previously, tanks were set to have nominal diameter represent center-line diameter and shell courses to have their inner diameters match each other. [78643]
- Tank diameter input for shell courses
Tank Summary
Wind and Seismic
- 5.9.5 top wind girder calculations removed for non-open top tanks
API 650 Section 5.9.5 top wind girder calculations have been removed for non-open top tanks. [78918]
- API 650 wind code dialog notes now available
Notes clarifying the wind pressure method are now displayed below the Wind section in the Site Conditions - Wind and Seismic tab of the Storage Tank dialog. These notes explain how each of the three options for wind speed source affects wind pressure for the 5.2.1(k)(1): ASCE 7-05 Exp. C wind pressure method. [78911]
- 5.9.5 top wind girder calculations removed for non-open top tanks
B31.3 Piping
B31.4 Piping
ASME B16.9 Tees
B31.4 Piping