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