Label Validation against Lists of Valid Values

Only valid entries may be selected when completing Properties Dialogs or entered at the command prompt, items with invalid labels are displayed in red in the Engineering Explorer, and drafting errors and omissions are highlighted with a balloon or symbol of the project's choice, and detailed in an error file. Where possible, these errors should be rectified before the data is exported to the database. Null characters may be used for pipe labels, if information is unknown.

The following label data is validated:

• Area codes

• Block codes

• Equipment Type Letters (equipment descriptions for each equipment type).

• Fluid/Service codes

• Function codes

• Identical Instruments are identified by suffixes

• Instrument Types (for example, PI=Pressure Indicator)

• Insulation Codes

• Line Number Uniqueness

• Line/Pipe Sizes

• Nozzle Sizes

• Nozzle Tag Uniqueness (per equipment item)

• Paint Codes

• Reducer Inlet and Outlet of different sizes

• Specification codes

• Tracing Codes

• Valve Closures (failure positions)

• Valve Codes

• Valve Sizes (if not placed in-line)

Validation Files

Entered data is checked against the allowable project values held in the project validation files.

The project validation files edited using the List of Values Configuration Category of the AVEVA P&ID Project Administration program.

Online validation does not prevent the data export, as this might unnecessarily hold up a project, when information is missing for only a small number of items.

Typical Items

When labels of typical items are validated on input, they are not only checked against the drawing labels but also typical labels on relevant items.

The validation process checks for duplicates. These are reported when OK on the typical data entry dialog is clicked. The dialog remains open so that the required changes can be made.

Associated Project Configuration Options

If unlabelled nozzles are to result in an error message, check the Nozzle error balloon placement checkbox. If unlabelled reducers are to result in an error message, check the Reducer not labelled error balloon placement checkbox.

Enter the symbol used to indicate an error in the Symbol Name field. Enter the position in which error text is displayed in the Text position from origin field.

The validation files are located in the Validation Directory identified in the Project Configuration Category of the Administration program.