General Abbreviations:


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 DCS : DISTRIBUTED CONTROL SYSTEM
 SCADA : SUPERVISORY CONTROL AND DATA ACQUISITION SYSTEM
 PLC : PROGRAMMABLE LOGIC CONTROLLER
 HART : HIGHWAY ADDRESSABLE REMOTE TRANSDUCER
 HHT : HAND HELD TERMINAL
 SFC : SMART FIELD CONFIGURATOR
 ESD : EMERGENCY SHUT DOWN
 AOV : AIR OPERATED VALVE
 MOV : MOTOR OPERATED VALVE
 SV : SOLENOID VALVE
 XVE : VIBRATION PROXIMITOR
 XVT : VIBRATION TRANSMITTER
 AE : ANALYZER
 JB : JUNCTION BOX
 ILD : INSTRUMENT LOOP DIAGRAM
 P&ID : PIPING AND INSTRUMENT DIAGRAM
 IIS : INSTRUMENT INSTALLATION SCHEDULE
 TDR : TIME DELAY RELAY
 SP : SET POINT
 NC : NORMALLY CLOSED
 NO : NORMALLY OPEN
 MCC : MOTOR CONTROL CENTRE
 IAS : INSTRUMENT AIR SUPPLY
 IGS : INSTRUMENT GAS SUPPLY
 ACFO : AIR TO CLOSE FAIL OPEN
 AOFC : AIR TO OPEN FAIL CLOSE
 FFA : FLAME FAILURE ALARM
 P/I – P to I : PNEUMATIC TO CURRENT CONVERTER
 I/P – I to P : CURRENT TO PNEUMATIC CONVERTER
 PB : PUSH BUTTON
 PID : PROPORTIONAL, INTEGRAL AND DERIVATIVE
 E/H : ELECTRO HYDRAULIC ACTUATOR
 BOV : BLOW DOWN VALVE
 A/M : AUTO / MANUAL – 2 POSITION SWITCH
 ZS : POSITION SWITCH
 HS : HAND SWITCH