The control structure design supplied by the EPC and package vendors will be checked with respect to overall process operability. This service is done by reviewing design documents (such as P&IDs, control narratives or SCD's) towards our checklists and library of challenging control problems with known working and non-working control solutions.
If a plant simulator is available this will be utilized to verify that the control logic supports planned operations and to confirm identified operability issues from the operability review and as a tool to identify more complex issues, hard to identify on paper.
For the issues discovered, re-engineering of the relevant process control design will be supplied as mark-ups on existing control documentation. The actual implementation will be handled by the automation project.