Further, while process flow diagrams (PFDs) are well understood by that name, piping and instrument diagrams (P&IDs) may exist under various other names or variations, such as mechanical flow diagrams ...

The ISA5 Committee now is working on a new technical report on instrumentation and control content of process flow diagrams (PFDs) and piping and instrument diagrams (P&IDs). While ISA-5.1 deals with ...