Appendix Y

• Appendix Y Flat Face Flanges with Metal-To-Metal Contact Outside the Bolt Circle
  Appendix Y Class 1 and Class 3 assembly designs are now available. [72209]
  
  

B16.11 Couplings

• ASME B16.11 Threaded and socket-welding couplets
  ASME B16.11 threaded and socket-welding couplets in accordance with Figure UW-16.1 Sketch bb (Table 4-2.12 Detail 5) are now available. Couplets may be added using the B16.11 Coupling button on the Standard Components toolbar or by using Quick Design with couplets set as the coupling default in the Set Mode Options dialog. Custom dimensions may also be specified in the Nozzle dialog for non-ASME B16.11 based couplets. [60868]
  
  

Nameplate

• ASME nameplates now available
  ASME nameplates are now available for heat exchangers and single-chamber, multi-chamber, and jacketed vessels.
  
  Highlights of the new nameplate feature include:
  • A new report section, the Nameplate Summary, which summarizes nameplate content and geometry in one place.
  • Automatic population of calculable nameplate content including Non-Destructive Examination, Post-Weld Heat Treatment, Lethal Service, Maximum Allowable Working Pressure, and more.
  • Dialog inputs for code-mandated nameplate information, each with a reference to its governing code section.
  • Two bracket styles, Single and Double, and two orientation options, Longitudinal and Circumferential.
  
  Some limitations apply:
  • Nameplates may only be attached to cylindrical shells.
  • Nameplates may be added using the Attach -> Nameplate menu option or by pressing the keyboard shortcut [Alt]+t+m.
  • Heat Exchangers: The nameplate reports design pressures and temperatures from the first active, non-hydrotest design condition.
  [72371]
  
  

Nozzles

• Reinforcing pads available for set in variable thickness nozzles
  Reinforcing pads are now available for set in variable thickness nozzle types including Standard (from Catalog), Standard Forged Stub, and Custom Manufactured configurations. Similar to other nozzle styles, a reinforcing pad may be added by navigating to the second page of the Nozzle dialog. [4411]
  
  

Pressure Summary

• Limit chamber rated MDMT to design MDMT option switch
  The chamber rated MDMT may now be limited to the design MDMT in the Pressure Summary using the Limit chamber rated MDMT to design MDMT option switch located on the General tab of the Set Mode Options dialog. [71859]
  
  

WRC 538

• Flange limit determination for ASME PCC-1 Appendix O
  The flange limit, Sf_max, can now be determined using ASME code equations as outlined in WRC Bulletin 538, section 4.

  The Use WRC 538 to determine Sfmax option switch is available in the ASME PCC-1 Appendix O Variables dialog under Joint Component -> Bolt Stress Values.

  This method is available when ASME PCC-1 Appendix O is available, except for the following flange cases:
  • Standard flanges
  • Dished covers and dished cover mating flanges
  • Slip on loose type flanges
  • Lap joint loose type flanges with hub
  • Split loose type flanges with hub

  Flange reports now include the calculation of the hub stress factors per WRC 538, section 4, flange stress calculations per ASME code equations using the moment at the assembly bolt stress flange limit, and a summary table indicating which flange stress limit is met. The Sf_max determined by this method is used in step 4 and step 8 of the ASME PCC-1 Appendix O Joint Component Approach.

  A modified temperature yield of the flange material is used to find the flange stress limit in cases when the yield strength of the flange may reduce significantly during operation. In those cases, Sf_max is no longer reduced by the ratio of the yield stresses in the joint component approach. [66907]
  
  

Appendix 2 Flanges

• Summary table over-stress flag
  The Stress Summary, Bolt Summary, and Rigidity Summary in the custom flange component report now warn or flag over-stress, insufficient area, and excessive flange rigidity index conditions by highlighting the cell yellow or red respectively. Previously, these issues were only indicated in the Deficiencies Summary. [72048]
  
  

Custom Flanges

• Details dialog in rating mode
  Custom flanges now provide the bolt area, bolt load, rigidity index, and max pressure values in the details dialog when designing in rating mode. [53032]
  
  
• Option to use larger inside diameter in longitudinal stress equation
  The option switch When B < 20*g1, substitute B1 for B for longitudinal stress SH is now available in the custom flange dialog for the following flange types:
  • ring type integral
  • weld neck integral
  • slip-on full face gasket
  • slip-on loose
  • slip-on integral
  • lap joint loose
  • split loose
  [6508]
  
  

Foundation Load Summary

• New condition reported for saddles
  The New condition is now reported in the Foundation Load Summary for saddle supported vessels. [71544]
  
  

Jackets

• Deficiency when jacket test pressure exceeds inner shell MAEP
  A deficiency is now reported when the jacket test pressure exceeds the inner shell and/or head MAEP in the jacketed region for Type 1 and Type 2 jackets. [66532]
  
  

Seismic

• ASCE 7-16 Section 11.4.8 Exception 2 Alternate C_s Determination
  ASCE 7-16 and IBC 2018 Ground Supported seismic codes for structures located on Site Class D sites and with S₁ greater than or equal to 0.2 (20 percent g) require a site-specific ground motion hazard analysis (GMHA) according to Section 11.4.8. An exception to this requirement is possible by using a modified procedure for determining the seismic response coefficient C_s.
  COMPRESS now includes consideration of this exception: when Site Class D is specified and S₁ ≥ 0.2, a new option "A ground motion hazard analysis was performed" is now available in the Seismic Codes dialog. If the option is activated, the C_s determination is unaffected; if the option is not activated, indicating a ground motion hazard analysis for the site was not performed, the rules of Section 11.4.8 Exception 2 will be enforced, and a factor of 1.5 may be applied to the determination of C_s for certain periods.
  Note that the previous assumption within COMPRESS seismic calculations for Site Class D and S₁ ≤ 0.2 was that a GMHA was both required and performed. Calculations for structures without a GMHA performed were potentially unconservative as the 1.5 factor on C_s was not considered. [71947]
  
  
• Site Coefficients F_a and F_v Look-up Override
  Options to override automatic look-up of the short-period site coefficient F_a and the long-period site coefficient F_v are now available in the Seismic Codes dialog for ASCE and IBC seismic codes. Activating the option(s) and entering the desired value(s) allows application of ASCE 7-16 and IBC 2018 requirements such as F_a >= 1.2 for default Site Class D from ASCE Section 11.4.4 (IBC 1613.2.3), and F_a = F_v = 1.0 (unity) for Site Class B sites with no site-specific velocity measurements from ASCE Section 11.4.3 (IBC 1613.2.2). [63611]
  
  

Toolbars

• Keyboard shortcut for B16.11 Couplings
  Couplings may now be placed in Division 1, Division 2, and API 653 Tank Document types using the keyboard shortcut Shift+F2. [71877]
  
  

Vessel Wizard

• Warnings and errors grouped into one dialog upon creation
  Warnings and errors encountered after creating a vessel through the Vessel Wizard dialog are now grouped together and reported in one dialog. Previously, each warning and error had to be cleared individually, making per-component warnings and errors difficult to get past. [63241]
  
  

XML

• Nozzle description for LWN nozzles
  The nozzle description is now included for long weld neck nozzles inside of the XML report. [55887]
  
  
• Skirt base ring bolt at zero degrees option switch
  The state of the skirt base ring bolt at zero degrees option switch is now included in the XML report. [71600]
  
  
• Skirt opening sleeve length
  The skirt opening sleeve length is now included in the XML report. [72114]
  
  
• Socket welded couplings
  The NPS size and class for socket welded couplings are now included in the XML report. [71751]
  
  
• Welded cover inner and outer fillet welds
  Welded cover inner and outer fillet welds are now included in the XML report. [56842]
  
  

Tubesheets

• Tubesheet steps on the integral side of the tubsheet and Figure UW-13.2 Sketch (i) corner joint now available
  Steps on the integral side of the tubesheet are now available in the Tubesheet Connection Details dialog and tubesheet corner joint Figure UW-13.2 Sketch (i) may be specified. [52331]
  
  
• Tubesheet weld sizing now available per Figure UW-13.2 in Division 1 and Table 4.2.6 and 4.2.8 in Division 2
  Figure UW-13.2 Sketches (a) through (l) and Table 4.2.6 Detail 1 through 3 and Table 4.2.8 Detail 1 may now be specified for the tubesheet corner joint in Division 1 and Division 2 respectively, in the Tubesheet Connection Details dialog. The tubesheet sketch is now included in the Tubesheet component report and weld sizing for the selected corner joint is included at the bottom of the report. Applicable corner joint sketches are indicated with a check mark in the Tubesheet Connection Details dialog along with a caution symbol for invalid sketch types. The dialog also shows a minimum required weld size to the right of the weld size input. [50289]
  
  

U-Tube HX

• Bolted covers as rear shell closures on U-Tube heat exchangers
  Bolted covers are now available to be selected as rear shell closures for U-tube type heat exchangers. [53963]
  
  

Heat Exchanger Dialog

• Exchanger type input
  The Exchanger Type input in the first page of the Heat Exchanger Wizard for switching between fixed, floating, and u-tube type exchangers is now a drop-down menu instead of using radio buttons. [71292]
  
  
• Set heat exchanger orientation in wizard
  The orientation of the heat exchanger can now be set using the Heat Exchanger -> General Options -> Orientation control in the Heat Exchanger wizard. Previously, the vessel orientation would be set to horizontal if the General Options -> Add Saddles checkbox was checked and vertical otherwise. Adding saddles is now a separate option. [71293]
  
  

Materials and Gaskets Summary

• Materials and Gaskets Summary removed
  The Materials and Gaskets Summary is no longer reported as all of the content is redundant with the addition of the Bill of Materials report. [61877]
  
  

Tubesheets

• Clearance check for integral tubesheets extended for bolting
  The minimum clearance between the bolt circle and the integral tubesheet weld is is now considered. Previously, an outer fillet weld size equal to the integral shell thickness was assumed. [50354]