Modify Tab

Imported VOLM and EQUI elements contain GENPRI and GENCUR elements. These are the imported solid and curve objects. GENPRI and GENCUR elements can be moved, rotated and deleted by using the same menu and Model Editor functions as other Equipment primitives. However, the geometry of the shape cannot be modified in Outfitting/Design. GENPRI and GENCUR elements cannot be modified with the Primitives utility accessed from the Modify menu.

The Modify tab allows the user to find and modify GENPRI and GENCUR elements.

1. The Find Elements to Modify pane gives the search criteria to find GENPRI and GENCUR elements to modify.

   

2. The In volume radio button allows the user to find all the elements (of type GENPRI, GENCUR, NOZZ, SUBE, BOX and CYLI) within a volume.

   Select an element in the Design Explorer, for example, the owning Equipment of an imported model, then press the CE button. A bounding box is placed around the current element in the 3D graphical view. The box's position and size and can be modified by using the Centre and Extent sliders.

   When the Find button is pressed, any elements found within the volume that belong to the current element are displayed in the grid.

   Note: Elements that are within Application Data Worlds (APPDWL) will not be found by this method as they are not part of the spatial map.

3. The Beneath element radio button allows the user to find all elements (of type GENPRI, GENCUR, NOZZ, SUBE, BOX and CYLI) beneath the specified element.

   Select an element in the Design Explorer, for example, the owning Equipment of an imported model, then press the CE button. When the Find button is pressed, any elements that are members of the specified element are displayed in the grid.

4. Items in the grid can be selected by clicking on them with the left mouse button. Items can be multi-selected by using the Ctrl key and left mouse button or by clicking on an item with the left mouse button and then dragging down.

   Select All selects all items in the grid and Deselect all deselects all items in the grid. The pop-up menu on the grid allows the user to Highlight, Unhighlight and Navigate To selected elements.

   

   No	the number of each element. The total number of elements found is displayed at the bottom left of the grid.
   Name	Name of the element.
   Type	Type of the element. GENPRI, GENCUR, NOZZ, SUBE, BOX or CYLI.
   X, Y, Z Lengths	Size of the bounding box around the element.
   Obstruction	Obstruction value of the element (if it has one), which can either be Hard, Soft or None.
   Display Level	Display level of the element (if it has one).

5. The Display level and Obstruction level attributes displayed on the Representation pane are set to default values when the model is loaded. By selecting items in the grid the user can modify the displayed obstruction and display level values. Click on Apply to store the new values in the database.

   

6. Box and Cylinder primitives can be generated from items in the grid. The user can select items from the grid and then choose the Primitive by selecting Box or Cylinder from the drop-down menu. Click Create to create either the boxes or cylinders.

   

7. GENPRI and GENCUR elements do not have P-points. Some facilities, such as dimensioning in Draft and Associations in Design, rely on having connection points to reference. Design points can be added to Equipment by using the Points command Equipment Create menu. These behave like P-points belonging to the Equipment element.

8. Equipment elements and Volume Model elements containing GENPRI and GENCUR elements can be used to create Design Templates. GENPRI and GENCUR geometry cannot be changed, so it is not possible to parameterize these elements, or create Repeat Rules for these elements in a Design Template.

9. Standard Design primitives can be added to imported models by using the Create then Primitives menu command.

10. Nozzles and electrical components can be added to imported Equipment by using the Create Nozzles... and Create Electrical Component... options on the Create Connections pane. These will display the standard forms for creating nozzles and electrical components.

    

11. Clicking Create Nozzle at Selected Element displays the Create Nozzle window.

    

12. Clicking Parameters displays a plot file as also displayed on the Create Nozzle window after clicking Create Nozzles. The middle part of the window allows the user to Name the nozzle, select a nozzle from the current MDB and enter various attribute details.

13. After clicking Position Nozzle, the user is prompted to identify an edge for the nozzle face by picking two points on a circumference of the nozzle on the required GENPRI element.

    Note: Due to the lack of data behind the imported files, two picks are required to constrain the position of the nozzle to the required accuracy.

    Note: The two picks must lie on the same circumference and in the same plane.

    

    

    Once two picks have been made, several aids are displayed indicating the selected nozzle center. The aid sphere marks the center point of the nozzle and represents P0 on the created nozzle. The plane indicates the position of the created nozzle face. The aid arrow represents the P1 direction of the created nozzle P1 direction.

    Once the position has been selected, Create Nozzle and Flip Direction become activate. The measured diameter is also displayed under the Purpose field.

14. If the direction arrow is in the opposite direction to that required, clicking Flip Direction reverses the direction and update the aids.

    The plane aid will also provide the user with feedback if the edges picked are not in the same plane.

15. To create the nozzle, click Create Nozzle. The created nozzle is based on the picked position and orientation and the selected attributes. Once the nozzle has been created it is displayed in the 3D View and the Create Nozzle window is reset ready for the next nozzle pick.

    Design Points, coupled with Create Nozzle, assists the user to add intelligence into the imported geometric model. Once positioned these design points can be selected in the same manner as conventional p-points can be in graphical selection modes and when drawing or annotating in draft.

    Note: Design Points can only be created beneath an equipment element.

16. To create a Design Point, select the equipment element in the explorer and click Create Design Points to display the Create Design Point window.

    

17. The equipment element is displayed at the top of the Create Design Point window and can be changed by selecting a different equipment element in the explorer and clicking CE.

18. Each Design Point must have a unique positive number for each equipment item. The user can enter a number in the Number text field. The number is validated by the system and changed to the next available number if it's found to be already in use. The user can leave the Number field blank and click Next Available to let the system pick the next available number.

19. The user can add a Description, Function and Purpose to the created point. The Direction field sets the direction of the point. When the user enters a value, that value is checked to make sure it is a valid direction. Clicking Flip reverses the direction and updates the field.

20. The Piping Attributes for the Design Point can be set by the user.

21. Clicking Position Point allows the user to pick a position for the point using the standard positioning functionality.

    Note: It is recommended that the standard positioning functionality is set to Graphics when picking GENPRI elements.

22. After clicking Centre Position, the user is prompted to pick two edges of a feature. The two edge picks are converted to a position at the center of the picked feature with the direction normal to the plane on which the two points are picked.

23. To create the Design Point, click Create Point.