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Site A site is an installation or platform based at a geographic location. A site comprises of one or more STATIONS.
Station A metering STATION at a SITE comprising of but not limited to a: Measurement Skid, containing LOCATION’s where instrumentation and actuators are installed, one or more Quality Instrumentation Loops, Tank farm’s etc.Each Station will also have a STORES, OFFSITE, OBSOLETE and a TEST EQUIPMENT facility.
Location A part of a STATION.e.g. Individual streams, Provers, Quality Loops etc.
Process Element A PROCESS ELEMENT defines a specific part of the process, several of which could be encompassed within a LOCATION. The PROCESS ELEMENT could be a measurement process such as Temperature, Pressure or Flow or it could be a control process such as a control valve or block valve.
Tag The physical location of a piece of EQUIPMENT, or composite piece of EQUIPMENT made up of discreet pieces of EQUIPMENT, represented by a TAG NUMBER that is generally represented on the STATION (or SYSTEM) Process and Instrumentation Diagram (P&ID).e.g. Temperature Indicator 21-TI-1001; or an Orifice Meter 21-FX-1001 made up from a carrier, several orifice plates and a number of DP cells that may have be placed within the LOCATION on a STATION at a specific related TAG NUMBER egg DP Cells 21- PK-1001A, 21-PK-1001B, 21-PK-1001C in the case on a three DP cell stack on 21-FX-1001.
Equiptment An item of control or measurement instrumentation, which can be identified by a discreet serial number. It may be located in service at a TAG or in STORES or OFF SITE. It may also be OBSOLETE. The EQUIPMENT can have, but will not necessarily be limited to a: Name, Manufacturer, and Model Number in support of its identification. It must have a serial number.e.g. 21-DP-1001A (TAG); a Differential Pressure Transmitter (Name); manufactured by Fisher-Rosemount (Manufacture); 3051S (Model Number); 0034567 (Serial Number).
Stores A location considered as a virtual store, featuring EQUIPMENT that is not in service at a TAG on a STATION within a SITE, but is available for use at the site as a spare or replacement for EQUIPMENT already in service at specific TAGS.
Test Equiptment A virtual collection of TEST EQUIPMENT used on the SITE. TEST EQUIPMENT is treated in the same way as other EQUIPMENT is so far as it can have log book entries and it too can be calibrated. TEST EQUIPMENT can be used to calibrate other pieces of EQUIPMENT.e.g. Deadweight Tester
Off site A virtual location that stores EQUIPMENT that is not in service at a TAG or in STORES on a STATION within a SITE.e.g. EQUIPMENT that is back at the manufacturer for repair or external calibration.
Obsolete A virtual location that stores EQUIPMENT that is no longer available for service at a TAG or in STORES or OFFSITE on a STATION within a SITE.e.g. EQUIPMENT that is in effect scrap. Logbook entries and calibration histories are still maintained for audit purposes of equipment that is not being used.