tag class
A diagram showing the main features and locations of major items. Usually has some dimensions to convey spatial relationships but is generally inadequate for construction.
A document that describes methods of operating a piece of equipment or process unit, including but not limited to Instructions, procedures, drawings, tables, etc. for the operation -stop, start, and emergency shutdown. Including operational limits, function testing, possible interruptions, corrective actions, hazards and corrective measures to be taken.
A heat exchanger that consists of two co-axial pipes of different sizes, where one fluid passes though the inner pipe and the other fluid passes through the space between the inner and the outer pipes.