tag class
A collection of all instrument set points and/or alarms. Each instrument having an alarm or trip function is listed. Alarms and settings are given as percentages of transmitter range and in engineering units, together with transmitter range, location of the annunciation point, cabinet, identification and relevant P&IDs/PEFS or logic drawing.
A document outlining the premise and intent for start-up and shutdown for process control. May also list instrument and control equipment, pre-alarm and shutdown alarm/trip requirements, failure modes of valves and equipment and type of signals to and from the control logic. Basis to develop more detailed control narrative.
A datasheet which provides precise information about a tag and compliments equipment specification.
A specification that describes the physical equipment for the purpose of procurement or fabrication. Compliments the datasheet.
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 procedure detailing heating, soak, cooling parameters, limits of strain during forming, temperature ranges, method of attachment of thermocouples, temperature control, equipment calibration, production testing, etc.
A document capturing what particular activities and requirements will be executed and delivered relating to inspection and testing for construction & vendor work.
A document that describes methods of installing a piece of equipment. Installation refers to the mounting, setting, erection, etc.
A document that describes methods of maintaining a specific piece of equipment. Typically originates from the equipment or package supplier.
A physical object that is intended to induce a reaction in a process fluid by heating it.