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