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2.2 Abbreviations
2.2.1 APC——advanced process control;
2.2.2 DCS——distributed control system;
2.2.3 PFD——process flow diagram;
2.2.4 P&ID——piping & instrument diagram;
2.2.5 FGS——fire and gas detection system;
2.2.6 HVAC——heating,ventilation & air condition;
2.2.7 PCS——process computer system;
2.2.8 PLC——programmable logic controller;
2.2.9 SCADA——supervisory control and data acquisition;
2.2.10 SIS——safety instrumentation system;
2.2.11 UID——utility piping & instrument diagram.