Description of HCU

MDS creates supports across four disciplines: structural, piping, electrical and HVAC, and it is possible one of the disciplines could inadvertently corrupt the multi-discipline support in some way. This utility checks for the existence of any problems.

Separate checks are performed for ancillaries, structural supports, hangers, trunnions and groups. Ancillaries which are part of structural supports (for example, /DATUM) are checked as part of the structural supports, using the ancillary checking method.

After the HCU has completed the checks, a report is created which can be displayed on the screen, or it can be in the form of a text file or a comma separated variables formatted file.

The checks that are carried out are listed below:

• Ancillaries

  • The ancillary is still valid for the pipes.

    • Bore

    • Material

    • Insulation thickness

    • Temperature

    • Elevation

  • The ancillary has valid

    • Specification references (SPREF)

    • Guide references

    • Description values for standard supports

    • Any other reference

  • Check for unknown references

• Supports

  • Check support type exists in available types

  • Check SREF and DATUM exist

  • Check specification references (SPREF)

  • Ancillary check DATUM atta

  • Check for support structure existence

  • Structures have members

  • Check for valid group members

  • Check frameworks have members

  • Check for unnamed elements

  • Check any other references

  • Check for valid description values for standard supports

  • Run MDS Integrity Checker

  • Check for unknown references

• Hangers

  • Check ATTA exists

  • Data consistency check on RESTRAINT

  • Check for valid group members

  • Check component names valid

  • Check for valid SPREF of atta

• Trunnions

  • Data consistency check on trunnion BRAN

  • Check for correct name of trunnion BRAN

  • Check for correct configuration for an MDS trunnion (correct straight pipe, elbow, reducer or tee is used)

  • Check for correct main line specification

    Note: All existing checks that are performed by the MDS Integrity Checker, which is executed on completion of a support (End the Creation of a Support), are included in the supports check section.