The pipe class edit window is activated by selecting in the main menu pipe class, 'New' or 'Edit'. The window consists of tabs which contains different pipe class settings. The tab PT rating will be completed with data by the user as indicated below.

Pipe Class Edit PT Rating
Pipe Class Edit PT Rating

The purpose of this PT rating tab is to enter the Pressure and Temperature combinations to be used in the calculations. The Pressure Temperature (PT) combinations can be entered and edited manually. Also standard tables are availabe to import the relevant PT combinations.

The input fields are as follows:

  • 'Flange rating standard', to select the flange standard to copy the PT combinations.
  • 'Material group', to select the relevant material group table in above selected standard for copying the PT combinations.
  • 'Flange rating', to select the flange rating in above selected standard to copy the PT combinations.
  • 'Test pressure mode', to select how the test pressure will be calculated. For further information see Test pressure
  • 'Design temperature limit', to set the maximum limit of the design temperature to be imported.
  • 'Import to temperature Limit' checkbox, indication whether the PT combinations should be imported up to the Design Temperature Limit set above
  • 'Import', click this button to import the PT ratings by the settings above. Note that the previous selection of PT combinations will be deleted and overwritten with the imported PT combinations.
  • 'Pressure Temperature Combinations List', shows the list of the currently set PT combinations. Left click with the mouse a combination to select the PT combination for editing.
  • 'New', click this button to enter a new PT combination.
  • 'Delete', click this button to delete the selected PT combination from the list.

At the bottom of the dialog:

  • 'Help' button, to show this help page
  • 'OK' button, to save the edited data in the database and close the dialog.
  • 'Cancel' button, to cancel the edited data and close the dialog.