7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 121

Legend amp Symbols

PampID

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 221

Legend amp Symbol

Abbreviation Meaning

BDV Blowdown Valve

EDP Emergency Depressurize

ESD Emergency Shutdown

ESDV Emergency Shutdown Valve

HCV Hand Control Valve

IAS Instrument Air Supply

MCS Monitoring and Control System

PST Pump Start

PSTP Pump Stop

R Reset

REV Reverse Acting

Abbreviation Meaning

SDV Shutdown Valve

SOV Solenoid Valve

SP Set Point

SR Split Range

SS Soft StartStart

TBG Tubing

UA Unit Alarm

VDU Visual Display Unit

VFD Variable Frequency D

XV Actuated OnOff Valv

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 321

Legend amp Symbol

Item Description

Connection to Process Mechanical Link or

Instrument Supply

Pneumatic Signal

Software or Data Link

Electrical Signal

Electromagnetic or High Frequency Signal

Instrument Tubing

Hydraulic Signal

Capillary

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 421

Legend amp Symbol

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 521

Legend amp Symbol

Temperature

Capillary Temperature Transmitter(with well)

Bi-Metallic Type (with Well)

Thermowell

RTD ndash Tempera

(with well)

Temperature E

(with well)

Flanged Therm

Pressure

Pressure Gauge Pressure Transm

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 221

Legend amp Symbol

Abbreviation Meaning

BDV Blowdown Valve

EDP Emergency Depressurize

ESD Emergency Shutdown

ESDV Emergency Shutdown Valve

HCV Hand Control Valve

IAS Instrument Air Supply

MCS Monitoring and Control System

PST Pump Start

PSTP Pump Stop

R Reset

REV Reverse Acting

Abbreviation Meaning

SDV Shutdown Valve

SOV Solenoid Valve

SP Set Point

SR Split Range

SS Soft StartStart

TBG Tubing

UA Unit Alarm

VDU Visual Display Unit

VFD Variable Frequency D

XV Actuated OnOff Valv

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 321

Legend amp Symbol

Item Description

Connection to Process Mechanical Link or

Instrument Supply

Pneumatic Signal

Software or Data Link

Electrical Signal

Electromagnetic or High Frequency Signal

Instrument Tubing

Hydraulic Signal

Capillary

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 421

Legend amp Symbol

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 521

Legend amp Symbol

Temperature

Capillary Temperature Transmitter(with well)

Bi-Metallic Type (with Well)

Thermowell

RTD ndash Tempera

(with well)

Temperature E

(with well)

Flanged Therm

Pressure

Pressure Gauge Pressure Transm

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 321

Legend amp Symbol

Item Description

Connection to Process Mechanical Link or

Instrument Supply

Pneumatic Signal

Software or Data Link

Electrical Signal

Electromagnetic or High Frequency Signal

Instrument Tubing

Hydraulic Signal

Capillary

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 421

Legend amp Symbol

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 521

Legend amp Symbol

Temperature

Capillary Temperature Transmitter(with well)

Bi-Metallic Type (with Well)

Thermowell

RTD ndash Tempera

(with well)

Temperature E

(with well)

Flanged Therm

Pressure

Pressure Gauge Pressure Transm

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 421

Legend amp Symbol

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 521

Legend amp Symbol

Temperature

Capillary Temperature Transmitter(with well)

Bi-Metallic Type (with Well)

Thermowell

RTD ndash Tempera

(with well)

Temperature E

(with well)

Flanged Therm

Pressure

Pressure Gauge Pressure Transm

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 521

Legend amp Symbol

Temperature

Capillary Temperature Transmitter(with well)

Bi-Metallic Type (with Well)

Thermowell

RTD ndash Tempera

(with well)

Temperature E

(with well)

Flanged Therm

Pressure

Pressure Gauge Pressure Transm

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 621

Legend amp Symbol

Level

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 721

Legend amp Symbol

Silencer

Variable Area

Flow

Orifice Plate

Turbine Primary

Element

Positive Dispalcement

Type with Flow Totalizing

Indicator

Flow Switch

Non Intrusive Element

Restricted Orifice

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 821

Legend amp Symbol

Valves

Gate Valve

Ball Valve

Globe Valve

Check Valve

Butterfly Valve

Hand Control Valve

Motor Operated

Valve

Control Valve cw

Positioner

Self-Acuating Control

Valve

Control Valve with

Hand WheelPlug Valve

Needle Valve

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 721

Legend amp Symbol

Silencer

Variable Area

Flow

Orifice Plate

Turbine Primary

Element

Positive Dispalcement

Type with Flow Totalizing

Indicator

Flow Switch

Non Intrusive Element

Restricted Orifice

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 821

Legend amp Symbol

Valves

Gate Valve

Ball Valve

Globe Valve

Check Valve

Butterfly Valve

Hand Control Valve

Motor Operated

Valve

Control Valve cw

Positioner

Self-Acuating Control

Valve

Control Valve with

Hand WheelPlug Valve

Needle Valve

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 821

Legend amp Symbol

Valves

Gate Valve

Ball Valve

Globe Valve

Check Valve

Butterfly Valve

Hand Control Valve

Motor Operated

Valve

Control Valve cw

Positioner

Self-Acuating Control

Valve

Control Valve with

Hand WheelPlug Valve

Needle Valve

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 921

Legend amp Symbol

Connection

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1021

Equipment

Legend amp Symbol

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1121

Equipment

Legend amp Symbol

MOTOR DRIVEN SCREW PUMP

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1221

Equipment

Legend amp Symbol

FLAME ARRESTOR BUG SCREEN

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1321

General

Legend amp Symbol

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1421

For liquid sample below 150 degF with atm

Boiling temperature above the sample

Temperature for all possible conditions

For liquid sample below 150 degF with a

Boiling temperature below the samp

Temperature

Sample Connection

Legend amp Symbol

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1521

For HC vapor and Fuel Gas

For propane liquid

Propane is sampled at liquid

Sample Connection

Legend amp Symbol

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1621

Instrument Identification

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1721

Instrument Identification

Functional Identifier

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1821

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1921

Line Identification

Service Code

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 2021

Line Identification

Piping Class

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 2121

Line Identification

Line Type Off-skid number On-skid n

Low Pressure Process (300 ASME and lower) 1000 100

High Pressure Process (600 and higher) 2000 200

Extra High Pressure (API 30005000 10000 15000 eqp trim) 3000 300

LP FlareCold FlareVent 4000 400

HP FlareVent 5000 500

Drain OpenClosed 6000 600

Fuel amp Utility Gases 7000 700

Fuel amp Utility Liquid 8000 800

Utility Water 9000 900

Piping Line Numbering

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1021

Equipment

Legend amp Symbol

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1121

Equipment

Legend amp Symbol

MOTOR DRIVEN SCREW PUMP

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1221

Equipment

Legend amp Symbol

FLAME ARRESTOR BUG SCREEN

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1321

General

Legend amp Symbol

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1421

For liquid sample below 150 degF with atm

Boiling temperature above the sample

Temperature for all possible conditions

For liquid sample below 150 degF with a

Boiling temperature below the samp

Temperature

Sample Connection

Legend amp Symbol

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1521

For HC vapor and Fuel Gas

For propane liquid

Propane is sampled at liquid

Sample Connection

Legend amp Symbol

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1621

Instrument Identification

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1721

Instrument Identification

Functional Identifier

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1821

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1921

Line Identification

Service Code

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 2021

Line Identification

Piping Class

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 2121

Line Identification

Line Type Off-skid number On-skid n

Low Pressure Process (300 ASME and lower) 1000 100

High Pressure Process (600 and higher) 2000 200

Extra High Pressure (API 30005000 10000 15000 eqp trim) 3000 300

LP FlareCold FlareVent 4000 400

HP FlareVent 5000 500

Drain OpenClosed 6000 600

Fuel amp Utility Gases 7000 700

Fuel amp Utility Liquid 8000 800

Utility Water 9000 900

Piping Line Numbering

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1121

Equipment

Legend amp Symbol

MOTOR DRIVEN SCREW PUMP

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1221

Equipment

Legend amp Symbol

FLAME ARRESTOR BUG SCREEN

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1321

General

Legend amp Symbol

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1421

For liquid sample below 150 degF with atm

Boiling temperature above the sample

Temperature for all possible conditions

For liquid sample below 150 degF with a

Boiling temperature below the samp

Temperature

Sample Connection

Legend amp Symbol

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1521

For HC vapor and Fuel Gas

For propane liquid

Propane is sampled at liquid

Sample Connection

Legend amp Symbol

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1621

Instrument Identification

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1721

Instrument Identification

Functional Identifier

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1821

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1921

Line Identification

Service Code

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 2021

Line Identification

Piping Class

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 2121

Line Identification

Line Type Off-skid number On-skid n

Low Pressure Process (300 ASME and lower) 1000 100

High Pressure Process (600 and higher) 2000 200

Extra High Pressure (API 30005000 10000 15000 eqp trim) 3000 300

LP FlareCold FlareVent 4000 400

HP FlareVent 5000 500

Drain OpenClosed 6000 600

Fuel amp Utility Gases 7000 700

Fuel amp Utility Liquid 8000 800

Utility Water 9000 900

Piping Line Numbering

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1221

Equipment

Legend amp Symbol

FLAME ARRESTOR BUG SCREEN

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1321

General

Legend amp Symbol

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1421

For liquid sample below 150 degF with atm

Boiling temperature above the sample

Temperature for all possible conditions

For liquid sample below 150 degF with a

Boiling temperature below the samp

Temperature

Sample Connection

Legend amp Symbol

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1521

For HC vapor and Fuel Gas

For propane liquid

Propane is sampled at liquid

Sample Connection

Legend amp Symbol

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1621

Instrument Identification

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1721

Instrument Identification

Functional Identifier

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1821

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1921

Line Identification

Service Code

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 2021

Line Identification

Piping Class

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 2121

Line Identification

Line Type Off-skid number On-skid n

Low Pressure Process (300 ASME and lower) 1000 100

High Pressure Process (600 and higher) 2000 200

Extra High Pressure (API 30005000 10000 15000 eqp trim) 3000 300

LP FlareCold FlareVent 4000 400

HP FlareVent 5000 500

Drain OpenClosed 6000 600

Fuel amp Utility Gases 7000 700

Fuel amp Utility Liquid 8000 800

Utility Water 9000 900

Piping Line Numbering

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1321

General

Legend amp Symbol

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1421

For liquid sample below 150 degF with atm

Boiling temperature above the sample

Temperature for all possible conditions

For liquid sample below 150 degF with a

Boiling temperature below the samp

Temperature

Sample Connection

Legend amp Symbol

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1521

For HC vapor and Fuel Gas

For propane liquid

Propane is sampled at liquid

Sample Connection

Legend amp Symbol

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1621

Instrument Identification

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1721

Instrument Identification

Functional Identifier

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1821

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1921

Line Identification

Service Code

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 2021

Line Identification

Piping Class

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 2121

Line Identification

Line Type Off-skid number On-skid n

Low Pressure Process (300 ASME and lower) 1000 100

High Pressure Process (600 and higher) 2000 200

Extra High Pressure (API 30005000 10000 15000 eqp trim) 3000 300

LP FlareCold FlareVent 4000 400

HP FlareVent 5000 500

Drain OpenClosed 6000 600

Fuel amp Utility Gases 7000 700

Fuel amp Utility Liquid 8000 800

Utility Water 9000 900

Piping Line Numbering

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1421

For liquid sample below 150 degF with atm

Boiling temperature above the sample

Temperature for all possible conditions

For liquid sample below 150 degF with a

Boiling temperature below the samp

Temperature

Sample Connection

Legend amp Symbol

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1521

For HC vapor and Fuel Gas

For propane liquid

Propane is sampled at liquid

Sample Connection

Legend amp Symbol

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1621

Instrument Identification

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1721

Instrument Identification

Functional Identifier

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1821

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1921

Line Identification

Service Code

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 2021

Line Identification

Piping Class

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 2121

Line Identification

Line Type Off-skid number On-skid n

Low Pressure Process (300 ASME and lower) 1000 100

High Pressure Process (600 and higher) 2000 200

Extra High Pressure (API 30005000 10000 15000 eqp trim) 3000 300

LP FlareCold FlareVent 4000 400

HP FlareVent 5000 500

Drain OpenClosed 6000 600

Fuel amp Utility Gases 7000 700

Fuel amp Utility Liquid 8000 800

Utility Water 9000 900

Piping Line Numbering

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1521

For HC vapor and Fuel Gas

For propane liquid

Propane is sampled at liquid

Sample Connection

Legend amp Symbol

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1621

Instrument Identification

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1721

Instrument Identification

Functional Identifier

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1821

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1921

Line Identification

Service Code

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 2021

Line Identification

Piping Class

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 2121

Line Identification

Line Type Off-skid number On-skid n

Low Pressure Process (300 ASME and lower) 1000 100

High Pressure Process (600 and higher) 2000 200

Extra High Pressure (API 30005000 10000 15000 eqp trim) 3000 300

LP FlareCold FlareVent 4000 400

HP FlareVent 5000 500

Drain OpenClosed 6000 600

Fuel amp Utility Gases 7000 700

Fuel amp Utility Liquid 8000 800

Utility Water 9000 900

Piping Line Numbering

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1621

Instrument Identification

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1721

Instrument Identification

Functional Identifier

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1821

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1921

Line Identification

Service Code

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 2021

Line Identification

Piping Class

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 2121

Line Identification

Line Type Off-skid number On-skid n

Low Pressure Process (300 ASME and lower) 1000 100

High Pressure Process (600 and higher) 2000 200

Extra High Pressure (API 30005000 10000 15000 eqp trim) 3000 300

LP FlareCold FlareVent 4000 400

HP FlareVent 5000 500

Drain OpenClosed 6000 600

Fuel amp Utility Gases 7000 700

Fuel amp Utility Liquid 8000 800

Utility Water 9000 900

Piping Line Numbering

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1721

Instrument Identification

Functional Identifier

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1821

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1921

Line Identification

Service Code

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 2021

Line Identification

Piping Class

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 2121

Line Identification

Line Type Off-skid number On-skid n

Low Pressure Process (300 ASME and lower) 1000 100

High Pressure Process (600 and higher) 2000 200

Extra High Pressure (API 30005000 10000 15000 eqp trim) 3000 300

LP FlareCold FlareVent 4000 400

HP FlareVent 5000 500

Drain OpenClosed 6000 600

Fuel amp Utility Gases 7000 700

Fuel amp Utility Liquid 8000 800

Utility Water 9000 900

Piping Line Numbering

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1821

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1921

Line Identification

Service Code

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 2021

Line Identification

Piping Class

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 2121

Line Identification

Line Type Off-skid number On-skid n

Low Pressure Process (300 ASME and lower) 1000 100

High Pressure Process (600 and higher) 2000 200

Extra High Pressure (API 30005000 10000 15000 eqp trim) 3000 300

LP FlareCold FlareVent 4000 400

HP FlareVent 5000 500

Drain OpenClosed 6000 600

Fuel amp Utility Gases 7000 700

Fuel amp Utility Liquid 8000 800

Utility Water 9000 900

Piping Line Numbering

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 1921

Line Identification

Service Code

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 2021

Line Identification

Piping Class

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 2121

Line Identification

Line Type Off-skid number On-skid n

Low Pressure Process (300 ASME and lower) 1000 100

High Pressure Process (600 and higher) 2000 200

Extra High Pressure (API 30005000 10000 15000 eqp trim) 3000 300

LP FlareCold FlareVent 4000 400

HP FlareVent 5000 500

Drain OpenClosed 6000 600

Fuel amp Utility Gases 7000 700

Fuel amp Utility Liquid 8000 800

Utility Water 9000 900

Piping Line Numbering

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 2021

Line Identification

Piping Class

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 2121

Line Identification

Line Type Off-skid number On-skid n

Low Pressure Process (300 ASME and lower) 1000 100

High Pressure Process (600 and higher) 2000 200

Extra High Pressure (API 30005000 10000 15000 eqp trim) 3000 300

LP FlareCold FlareVent 4000 400

HP FlareVent 5000 500

Drain OpenClosed 6000 600

Fuel amp Utility Gases 7000 700

Fuel amp Utility Liquid 8000 800

Utility Water 9000 900

Piping Line Numbering

7212019 Legend Symbols

httpslidepdfcomreaderfulllegend-symbols 2121

Line Identification

Line Type Off-skid number On-skid n

Low Pressure Process (300 ASME and lower) 1000 100

High Pressure Process (600 and higher) 2000 200

Extra High Pressure (API 30005000 10000 15000 eqp trim) 3000 300

LP FlareCold FlareVent 4000 400

HP FlareVent 5000 500

Drain OpenClosed 6000 600

Fuel amp Utility Gases 7000 700

Fuel amp Utility Liquid 8000 800

Utility Water 9000 900

Piping Line Numbering