What's New in PVElite 2006 and CodeCalc
2006
Below is a listing of the new features in this years version. Many of the new
features and improvements come directly from your comments. There have also been
a number of new features that have been included in builds to the 2005 version
during the last year. Those features are not discussed below,
but you can find them at this link.
- ASME VIII Division 1, 2, and Section II Part D updates. There were
literally hundreds of changes to material properties. For this years version,
the yield stress database was regenerated and several new tables of
information have been added. Approximately 100 new yield stress vs.
temperature listings have been added to this database.
Other Code
changes include those made to Appendix 1-4(f), Appendix 2 (rigidity is now
mandatory), Appendix 26 (Expansion Joint Design)
- PVElite has added calculations per UG-39. There are now
ligament checks for nozzles that are close together and checks for how close
the nozzles are from the edge of the flat head.
- For calculations performed in metric units there is now a new option to
write the results using a consistent set of metric units. This is essentially
MPa, Newtons, and N · mm. This makes reviewing the output easier while
maintaining the convenience of entering the data in your selected set of
metric units.
- In the tubesheet input, there is now an option to enter Appendix 26 thin
bellows expansion joint data. After typing in the data, the results can be
reviewed immediately using the calculator button. When the formal analysis is
made, PVElite will compute the joint movement and determine
the acceptability of the joint using the Code rules.
- ASME Code Case 2286 has been added as an option to
PVElite. These are alternate rules for determining allowable
external pressure and allowable compressive stresses for combinations of
stress due to weight, bending moment and external pressure as well as shear.
Stiffening ring calculations on cylinders are also included as well as
cone/shell ring calculations. A complete run down of this new feature can be
found in the help screen for Code Case 2286.
- Nozzles in Flat heads are now addressed for the PD:5500 and EN-13445
Codes. The methodology is to compute the required thickness of the head based
on the proximity of the nozzles to the edge and their spacing.
- A new autosave feature has been added this version. It allows you to
specify a time period in between saves. These saves can be silent if desired
or you can be prompted each time. This feature is in the
tools->configuration menu Set Default Values tab.
- A new nozzle pressure design option has been added. This option computes
the MAWP of the vessel and adds the static pressure to the nozzle location.
The other MAWP options compute the static head to the bottom of the governing
element or to the element where the nozzle is located. This option is valid
for both horizontal and vertical geometries.
- The List feature has been updated in this verison. Users can now switch
between the ANSI Metric and ANSI Imperial Nozzle tables just by changing the
option in the pull down menu. Also in the list dialog, full penetration pad
welds and nozzle welds can be specified for all nozzles. This option is handy
when the vessel thickness is changed after the nozzles are modelled.
- There is now an alternate method for checking wide flange, channel type,
and T shaped legs. This method breaks down the load due to wind or seismic
into its component directions and resolves the stresses around each axis using
the Unity Check approach. While the default method has worked quite well over
the years, this method provides an alternative. Please note that the results
between the two methods may be quite different.
- For horizontal vessels on saddle supports, PVElite now
examines the rings over each saddle independently and uses the appropriate
ring properties when computing the stresses in the ring and the shell at the
stiffener. Previously, the program assumed symmetry with regard to the rings.
- When hydrotesting large horizontal vessels, it is necessary to use short
term intermediate (crib) supports to keep saddle stresses within computed
allowables in some cases. The program now gathers the number of intermediate
supports and uses this information to compute a reduced saddle load Q for the
hydrotest case.
- The liquid dialog has a new button that clarifies the entry of liquid from
the datum line. Once the height from the datum line is entered, press the
"Fill Elements Now" button to add the liquid to the vessel.
- The units files have been updated. The conversion constants have remained
the same, but the text labels for the units have been revised for consistency
with international standards. Also, the program that modifies the units
(Makeunit.exe) has been updated as well.
- In the material database selection dialogs, a "Search Again" feature has
been added that allows repeat searching for the entered material.
- The stiffening ring dialog has a new entry for the height of the section
ring. This value is needed when computing the stress at the tip of the ring
for ASME STS calculations. This distance is also used for the ring stress
calculations in the Zick Analysis.
- In the seismic code selection, the IBC 2003 Seismic design code has been
added.
- Some extra logic has been added that updates the ring diameters for bar
type rings. When the vessel diameter or thickness is changed, the ring
diameters will automatically be changed as well. This is also accounted for
when using the share and update element commands.
- The "Nozzle Schedule" report has been updated to include nozzle cut length
calculations. Having this data available will eliminate the time that
designers spend computing these values on CAD systems.
- Platforms can now be added on horizontal vessels in the same manner as
vertical vessels. These platforms will rectangular in shape.
- For Angle type stiffening rings, the input echo now displays the text
"Hard Way" or "Easy Way" after the stiffening ring name to denote how the ring
is attached to the vessel. This will only work if the ring was selected from
the supplied database of shapes.
- Flange pressure ratings for several DIN specifications have been added.
What's New in CodeCalc
2006
- ASME VIII Division 1, 2, and Section II Part D updates. There were
literally hundreds of changes to material properties. For this years version,
the yield stress database was regenerated and several new tables of
information have been added. Approximately 100 new yield stress vs.
temperature listings have been added to this database. 2 new external
pressures charts were also added.
Other Code changes include those
made to Appendix 1-4(f), Appendix 2 (rigidity is now mandatory), Appendix 26
(Expansion Joint Design)
- New Wind codes have been made available for the Support Lug and Legs. The
codes that were added are ASCE 7-2002/95/98 and UBC-1997.
- New Wind codes have been added in the horizontal vessel module. The codes
that were added are ASCE 7-2002/95/98 and UBC-1997.
- The option of entering the loads in Sustained, Expansion and Occasional
categories using the WRC-107 convention system is available now. Once, the
loads are categorized they can be combined per ASME Sec. VIII Div. 2 rules and
compared with the allowables.
The previous versions would only allow
categorization of the loads when they were entered in the global convention
system. Now, both WRC-107 and global convention can be used. Moreover, the
loads can be converted from one convention to another with a flip of a button
from the input screen. You can also run the Nozzle Pro interface by
entering loads in WRC-107 convention for the 90 degree nozzles.
- A new autosave feature has been added this version. It allows you to
specify a time period in between saves. These saves can be silent if desired
or you can be prompted each time. This feature is in the
tools->configuration menu Miscellaneous tab.
- The variable names used in the input echo and output of the flange and
floating head modules were made consistent with the ASME code's
nomenclature.
- The recommendation for the minimum gasket width was
added in floating head calculations.