Data Consistency Checking

This chapter describes the commands used for the Model Data Consistency Checking Utility (DATACON). The checks include the following:

1. Adjacent items are connected and no gaps exist.

2. Connection types are compatible.

3. Connected components are not skewed with respect to one another.

4. Pipe bores or hanger rod diameters are consistent.

5. Branch and equipment connections are properly terminated.

6. Hangers are correctly connected to Fittings and Attas.

7. Tubes or rods joining components are not less than minimum acceptable lengths.

8. Angles of pulled Bends and Elbows fall within the limits set in the relevant Specifications.

9. Structural Sections and Joints are correctly positioned with respect to each other and are properly connected.

10. Lengths of structural Sections fall within predefined ranges.

The commands for checking for data inconsistencies fall into three general categories:

• Those which specify the design areas to be checked and how diagnostic messages will be output.

• Those which specify the maximum misalignments or positional errors allowed between adjacent components. No errors will be reported below these limits.

• Those which specify minimum lengths of tube between adjacent piping components (normally dependent upon the tube diameter) or for rod between adjacent hanger components, the maximum acceptable angle for pipe bends, and the minimum and maximum lengths of structural Sections.