equipment class
Installation refers to the mounting, setting, erection, etc. of equipment and accessories. These diagrams are for transient activity during installation (eg. sequence of activity) and not finished work.
A list describing the contents of a shipment received.
A document certifying a welder is qualified to perform work according to certain weld procedure.
A unit or assembly of units or sections and associated fittings forming a rigid structural system used to securely fasten or support cables and raceways.