PROCESS AND INSTRUMENTATION DIAGRAMS STANDARD DRAFTING SYMBOLS CHART SA WATER STANDARDS
This document is a standard drafting symbols chart for SA Water Process and Instrumentation Diagrams. It provides a legend for line types, symbols, fittings, self-actuated regulating valves, general instrument functions, level sensors, actuators, primary element flow rate sensors, piping valves, and piping hazardous classification levels.
Source: TS-112-Process-and-Instrument-Diagrams.pdf · page 16/27 · Drawing: 4003-00001-01 rev 1 · Components: 87 (1 equipment, 19 instrument, 37 valve, 10 line, 20 other)
Equipment (1)
| Tag | Description | Details | Connects to |
|---|---|---|---|
| P-driven-by-VSM | PUMP DRIVEN BY A VARIABLE SPEED MOTOR | SIC / M | — |
Instruments (19)
| Tag | Function (ISA 5.1) | Description | Details | Connects to |
|---|---|---|---|---|
| pilot-light | — | PILOT LIGHT | — | — |
| XXX-right | Unidentified instrument function | PRESSURE SETTING BALLOON (RIGHT) | — | — |
| XXX-left | Unidentified instrument function | PRESSURE SETTING BALLOON (LEFT) | — | — |
| logic-interlock | — | UNDEFINED INTERLOCK LOGIC | — | — |
| LE-ultrasonic | LE = Level Element | UTRASONIC | — | — |
| LE-conductivity | LE = Level Element | CONDUCTIVITY PROBE | — | — |
| LE-ball-float | LE = Level Element | BALL FLOAT | — | — |
| flow-element-orifice | — | FLOW ELEMENT, ORIFICE TYPE | — | — |
| flume | — | FLUME | — | — |
| FE-code-balloon | FE = Flow Element | FLOW ELEMENT CODE BALLOON (To be associated with Element) | — | — |
| M-magnetic-flowmeter | — | MAGNETIC FLOWMETER | M | — |
| pitot-tube-or-annubar | — | PITOT TUBE or ANNUBAR | — | — |
| positive-displacement-flowmeter | — | POSITIVE DISPLACEMENT FLOWMETER | — | — |
| T-thermal-mass-flowmeter | — | THERMAL MASS FLOWMETER | T | — |
| turbine-flowmeter | — | TURBINE FLOWMETER | — | — |
| ultrasonic-flowmeter | — | ULTRASONIC FLOWMETER | — | — |
| variable-area-flow-indicator | — | VARIABLE AREA FLOW INDICATOR | — | — |
| vortex-meter | — | VORTEX METER | — | — |
| weir | — | WEIR | — | — |
Valves (37)
| Tag | Description | Details | Connects to |
|---|---|---|---|
| PSV-1 | GLOBE, DIAPHRAGM TYPE PRESSURE SUSTAINING VALVE | — | — |
| PCV-1 | GLOBE, DIAPHRAGM TYPE PRESSURE REGULATING VALVE | — | — |
| PRV-1 | GLOBE, DIAPHRAGM TYPE PRESSURE RELIEF VALVE | — | — |
| PSV-2 | SPRING ACTUATEDPRESSURE RELIEF VALVE | — | — |
| PSV-3 | SPRING ACTUATED 90 DEG PRESSURE RELIEF VALVE | — | — |
| HOCV-1 | HOCV | ...kPa / ...kPa | — |
| HOSV-1 | HOSV | ...kPa / ...kPa | — |
| actuator-diaphragm | DIAPHRAGM | — | — |
| actuator-diaphragm-pressure-balanced | DIAPHRAGM PRESSURE BALANCED | — | — |
| actuator-float | FLOAT | — | — |
| actuator-hand-or-handwheel | HAND ACTUATED OR HANDWHEEL | — | — |
| actuator-piston | PISTON | — | — |
| actuator-piston-with-positioner | PISTON ACTUATOR WITH POSITIONER OR POSITION SWITCHES | — | — |
| positioner-on-actuator | POSITIONER SHOWN ON ACTUATOR | — | — |
| positioner-tag | POSITIONER TAG | — | — |
| actuator-rotary-motor | ROTARY MOTOR (MAY BE ELECTRIC HYDRAULIC or PNEUMATIC) | M / E | — |
| actuator-solenoid | SOLENOID | S | — |
| actuator-spring | SPRING - FOR PRESSURE RELIEF OR SAFETY VALVE ONLY | — | — |
| actuator-weight | WEIGHT | — | — |
| valve-angle | VALVE, ANGLE | — | — |
| valve-ball | VALVE, BALL | — | — |
| valve-butterfly | VALVE, BUTTERFLY | — | — |
| valve-diaphragm | VALVE, DIAPHRAGM | — | — |
| valve-fire-plug | VALVE, FIRE PLUG | — | — |
| valve-gas-release | VALVE, GAS RELEASE | — | — |
| valve-gate | VALVE, GATE | — | — |
| valve-general | VALVE, GENERAL | — | — |
| valve-globe | VALVE, GLOBE | — | — |
| hydrant | HYDRANT | H | — |
| valve-knife-gate | VALVE, KNIFE GATE | — | — |
| valve-needle | VALVE, NEEDLE | — | — |
| valve-non-return | VALVE, NON RETURN | — | — |
| valve-backflow-prevention-device | VALVE, BACKFLOW PREVENTION DEVICE | — | — |
| penstock | PENSTOCK | — | — |
| valve-pinch | VALVE, PINCH | — | — |
| valve-plug | VALVE, PLUG | — | — |
| valve-3-way | VALVE, 3 WAY | — | — |
Lines (10)
| Tag | Description | Details | Connects to |
|---|---|---|---|
| line-main-process | MAIN PROCESS LINES | — | — |
| line-secondary-process | SECONDARY PROCESS LINE | — | — |
| line-covered-channel | COVERED CHANNEL | — | — |
| line-open-channel | OPEN CHANNEL | — | — |
| line-instrument-supply | INSTRUMENT SUPPLY OR CONNECTION TO PROCESS | — | — |
| line-undefined-signal | UNDEFINED SIGNAL | — | — |
| line-pneumatic-signal | PNEUMATIC SIGNAL | — | — |
| line-electrical-signal | ELECTRICAL SIGNAL | — | — |
| line-electrical-signal-digital | ELECTRICAL SIGNAL (DIGITAL) | — | — |
| line-software-link | SOFTWARE LINK | — | — |
Other (20)
| Tag | Description | Details | Connects to |
|---|---|---|---|
| symbol-termination-point | TERMINATION POINT | EXISTING / NEW | — |
| symbol-in-left-out-right | IN LEFT/OUT RIGHT | — | — |
| symbol-out-left-in-right | OUT LEFT/IN RIGHT | — | — |
| symbol-liquid-flow-arrow | LIQUID FLOW ARROW | — | — |
| symbol-connection-lines | CONNECTION (OF LINES) | — | — |
| fitting-cap | CAP | — | — |
| fitting-blind-flange | BLIND FLANGE | — | — |
| fitting-flange-joint | FLANGE JOINT | — | — |
| fitting-flexible-coupling | FLEXIBLE COUPLING | — | — |
| fitting-flexible-hose | FLEXIBLE HOSE | — | — |
| fitting-hose-coupling | HOSE COUPLING | — | — |
| fitting-nozzle | NOZZLE | — | — |
| fitting-reducer-concentric | REDUCER - CONCENTRIC | — | — |
| fitting-reducer-flat-bottom | REDUCER - FLAT BOTTOM | — | — |
| fitting-reducer-flat-top | REDUCER - FLAT TOP | — | — |
| stop-plate | STOP PLATE | — | — |
| stoplog | STOPLOG | — | — |
| haz-level-B | HAZ LEVEL | B / (AVERAGE) / eg. CHLORINE, CAUSTIC | — |
| haz-level-C | HAZ LEVEL | C / (LOW) / eg. POLYMER, HIGH PRESSURE | — |
| haz-level-E | HAZ LEVEL | E / (NEGLIGIBLE) / eg. WATER | — |
Notes on drawing
- NOTE: THIS DRAWING SHOWS THE STANDARD SYMBOLS TO BE USED WHEN PRODUCING P & ID's FOR SA WATER AND ON ALL SA WATER PROJECTS. REFER TO TS112
- PIPING HAZARDOUS CLASSIFICATION LEVELS TO AS4343
- DO NOT SCALE PAPER PRINT