INSTRUMENT IDENTIFICATION LETTERS INSTRUMENT TAG NUMBERING SYSTEM BDV - BLOWDOWN VALVE PG PHS PI PIC PIT PP PR PS - PRESSURE GAUGE PRESSURE HAND SWITCH PRESSURE INDICATOR PRESSURE INDICATOR CONTROLLER PRESSURE INDICATOR TRANSMITTER PRESSURE POINT PRESSURE RECORDER PRESSURE SWITCH PSV PT PV PX PY PZA - PRESSURE SAFETY VALVE PRESSURE TRANSMITTER PRESSURE CONTROL VALVE PRESSURE SIGNAL CONDTIONER/RELAY I/P CONVERTOR PRESSURE ALARM AAAAA - AA NNN GENERAL INSTRUMENT SYMBOLS LOCALLY MOUNTED A MOUNTED ON LOCAL CONTROL PANEL INSTRUMENT TYPE SYSTEM NUMBER SEQUENTIAL NUMBER CENTRAL CONTROL ROOM MOUNTED BEHIND PANEL SUFFIX (Optional) FF FOUNDATION FIELD BUS DEVICE LOOP NUMBER ICS OPERATOR STATION FUNCTION 1 (CENTRAL CONTROL ROOM) ESD FO FC FA FC FCV FDS FE FI FIC FIR FIT FO FQI FQIS FQR FR FRC FS FT - - FAIL OPEN (VALVE ONLY) FAIL CLOSE (VALVE ONLY) FLOW ALARM FLOW CONTROLLER FLOW CONTROL VALVE (SELF ACTUATING) FLOW DIFFERENTIAL SWITCH FLOW ELEMENT FLOW INDICATOR FLOW INDICATOR CONTROLLER FLOW INDICATOR RECORDER FLOW INDICATOR TRANSMITTER FLOW (RESTRICTION) ORIFICE FLOW TOTALISER INDICATOR FLOW TOTALISER INDICATOR WITH SWITCH FLOW TOTALISER RECORDER FLOW RECORDER FLOW RECORDING CONTROLLER FLOW SWITCH FLOW TRANSMITTER TZA TC - TEMPERATURE ALARM TEMPERATURE CONTROLLER TDY TE THS TI TIC TIT TR TS TT TV TW TAH TAHH TAL TALL - I/P CONVERTOR TEMPERATURE ELEMENT TEMPERATURE HAND SWITCH TEMPERATURE INDICATOR TEMPERATURE INDICATOR CONTROLLER TEMPERATURE INDICATOR TRANSMITTER TEMPERATURE RECORDER TEMPERATURE SWITCH TEMPERATURE TRANSMITTER TEMPERATURE CONTROL VALVE THERMOWELL TEMPERATURE ALARM HIGH TEMPERATURE ALARM HIGH HIGH TEMPERATURE ALARM LOW TEMPERATURE ALARM LOW LOW XA XE XHS XI XIA XL/XA - STATUS ALARM MISCELLANEOUS ELEMENT XT XV - MISCELLANEOUS TRANSMITTER MISCELLANEOUS ON/OFF VALVE XXY - SOLENOID VALVE INSTRUMENT SYMBOLS X S TYPICAL VALVE DWG SOLENOID OPERATED VALVE - HAND CONTROLLER HAND CONTROL VALVE HAND INDICATING CONTROLLER HAND INDICATING SWITCH HAND SWITCH HSO HSC - POSITION COMMAND - (OPEN) POSITION COMMAND - (CLOSED) HSP HST HV HY - PUMP STOP PUMP START SHUT OFF VALVE I/P CONVERTOR IE II IR IT - CURRENT ELEMENT CURRENT INDICATOR (AMMETER) CURRENT RECORDER CURRENT TRANSMITTER JI - POWER INDICATOR (WATTAGE INDICATOR) KC KI KIC KT - TIME CYCLE CONTROLLER CLOCK TIME CYCLE INDICATOR CONTROLLER TIME-SCHEDULE TRANSMITTER LC LCV LG LI LIC LIT LQR LRC LS LT LTC LV LY LXY LSH LSHL LSL LAH LAHH LAL LALL - LEVEL CONTROLLER LEVEL CONTROL VALVE (SELF ACTUATING) LEVEL GAUGE LEVEL INDICATOR LEVEL INDICATOR CONTROLLER LEVEL INDICATOR TRANSMITTER LEVEL TOTALISER RECORDER LEVEL RECORDING CONTROLLER LEVEL SWITCH LEVEL TRANSMITTER LEVEL TRANSMITTER CONTROLLER LEVEL CONTROL VALVE I/P CONVERTOR LEVEL CONTROL VALVE SOLENOID VALVE LEVEL SWITCH HIGH LEVEL SWITCH HIGH AND LOW LEVEL SWITCH LOW LEVEL ALARM HIGH LEVEL ALARM HIGH HIGH LEVEL ALARM LOW LEVEL ALARM LOW LOW PC PCV PDA PDC PDI PDIC PDIS PDIT PDS PDT PAH PAHH PAL PALL - PRESSURE CONTROLLER PRESSURE CONTROL VALVE (SELF ACTUATING) PRESSURE DIFFERENTIAL ALARM PRESSURE DIFFERENTIAL CONTROLLER PRESSURE DIFFERENTIAL INDICATOR PRESSURE DIFFERENTIAL INDICATOR CONTROLLER PRESSURE DIFFERENTIAL INDICATOR SWITCH PRESSURE DIFFERENTIAL INDICATOR TRANSMITTER PRESSURE DIFFERENTIAL SWITCH PRESSURE DIFFERENTIAL TRANSMITTER PRESSURE ALARM HIGH PRESSURE ALARM HIGH HIGH PRESSURE ALARM LOW PRESSURE ALARM LOW LOW R SOLENOID OPERATED VALVE WITH LOCAL MANUAL RESET PISTON OPERATED VALVE I LOGIC INTERLOCK R RESET F&G FIRE & GAS ICS INTEGRATED CONTROL SYSTEM PCS PROCESS CONTROL SYSTEM AIR SUPPLY AS HYDRAULIC FLUID SUPPLY HFS LOCAL PANEL LIGHT VALVE WITH HAND WHEEL HAND CONTROL VALVE HYDRAULIC CYLINDER TYPE VALVE (OPENING) CHECK VALVE ОЈ STATUS INDICATOR CHANGE OF STATUS ALARM MISCELLANEOUS LIGHT/ALARM Summing INSTRUMENT LINE SYMBOLS FC CONTROL VALVE AND FAILURE ACTION VALVE FAILURE ACTION HC HCV HIC HIS HS S SHUTDOWN SYSTEM HYDRAULIC CYLINDER TYPE VALVE (OPEN/SHUT) DIAPHRAGM OPERATED SELF ACTUATED VALVE (TAPPING IN ASSOCIATED PIPEWORK) PNEUMATIC SIGNAL ELECTRIC SIGNAL FC-FAIL CLOSED FO-FAIL OPEN FL-FAIL LAST ZA ZC ZE ZI ZIH ZIL ZIS ZIT ZS ZSH ZSHL ZSL ZT - POSITION ALARM POSITION CONTROLLER POSITION ELEMENT POSITION INDICATOR ANALOGUE POSITION INDICATOR (OPEN) POSITION INDICATOR (CLOSED) POSITION INDICATOR SWITCH POSITION INDICATOR TRANSMITTER POSITION SWITCH POSITION SWITCH (OPEN) OR ZSHH POSITION SWITCH (OPEN/CLOSED) POSITION SWITCH (CLOSED) OR ZSLL POSITION TRANSMITTER CAPILLARY TUBING FILLED SYSTEM PSV PSV PSV HYDRAULIC SIGNAL DATA LINK PRESSURE SAFETY VALVE COMBINED VACUUM RELIEF & PRESSURE SAFETY VALVE VACUUM RELIEF VALVE PI FO PRESSURE PSE RESTRICTION ORIFICE PSE ZE PRESSURE SWITCH LOW. FUNCTION DESIGNATION FOR RELAYS RUPTURE DISC S SUM (ADD) DIFFERENCE (SUBTRACT) BIAS MULTIPLY RUPTURE DISC WITH RUPTURE DETECTION DEVICE EXTRACT SQUARE ROOT F(x) CHARACTERIZE 1.1 BOOST HIGH SELECT LOW SELECT I/P CURRENT TO PNEUMATIC P/I PNEUMATIC TO CURRENT E/P VOLTAGE TO PNEUMATIC E/I VOLTAGE TO CURRENT I/H CURRENT TO HYDRAULIC Issued 0 Rev. Index Date Document No. : Revision Note / Reason for Issue Drawn Checked ??? Piping & Instrument Diagram Legend Title : Project : Page 1 of 4 Sample Project Approved RG-L014-0025 Vapor Main FC RG-HV-014 P > Pset RG-L012-0150 GCU FC HH PIC H 011 L LL P < Pset RG-PCV-012 LD Compressor / Export Header RG-L013-0025 FC N2 RG-PCV-013 RG-L011-0050 FO RG-PCV-011 RG-PSV-017 RG-L017-0250 RG-L012-0150 TZA H 011 L HH LIC H 001 L LL TE 011 PT 011 RG-L022-0300 LS 011 Suction Drum RG01V-1 LIT 001 TE 001 Cargo Pump PI 011 RG-L021-0250 RG-L001-0400 FC Spray Pump RG-L002-0080 RG-L015-0200 FC RG-LCV-001 B RG-LCV-002 RG-L003-0080 FC RG-L401-0400 RG-L301-0400 Drain To Cargo Tank Train 1 LNG Booster Pump RG-L225-0150 Train 2 LNG Booster Pump RG-L325-0150 Train 3 LNG Booster Pump RG-L425-0150 Train 4 LNG Booster Pump TE 012 HH TZA H 012 L RG-L123-0150 Train 1 LNG Booster Pump LS 012 LZA 012 LL RG-L223-0150 Train 2 LNG Booster Pump RG-L323-0150 Train 3 LNG Booster Pump RG-L423-0150 Train 4 LNG Booster Pump RG-L016-0700 RG-LCV-001 A LZA HH 011 RG-L125-0150 Train 4 Train 3 FO RG-L127-0025 RG-L227-0025 RG-L337-0025 RG-L447-0025 RG-HV-015 RG-L201-0400 Train 2 Train 1 LNG Booster Pump Train 3 LNG Booster Pump Train 4 LNG Booster Pump Issued 0 Train 2 LNG Booster Pump Rev. Index Train 1 Date Document No. : Revision Note / Reason for Issue Drawn Checked ??? RG-L101-0400 Piping & Instrument Diagram Legend Title : Project : Page 1 of 4 Sample Project Approved