Basic diagrams showing the flow and the tracking of the particular piping throughout the facility
have been adequate to this point in time. But, identification is the bigger issue. In most cases, the
engineering diagrams that the company has obtained from their engineering companies (i.e., the
companies responsible for designing and constructing the equipment and installing it) would
suffice for inspectional purposes. It is important that those engineering diagrams be current and
that they actually show what’s in place in the plant at that particular moment. Linking your change
control program to updates to your engineering drawings is key to keeping them current.
