PROCESS AND INSTRUMENTATION DIAGRAMS STANDARD DRAFTING SYMBOLS CHART SA WATER STANDARDS
This drawing is a standard legend sheet showing symbols and codes for line types, self-actuated regulating valves, actuators, piping valves, fittings, level sensors, and flow rates used on SA Water P&ID drawings.
Source: TS-112-Process-and-Instrument-Diagrams.pdf · page 16/27 · Drawing: 4003-00001 rev 01 · Components: 14 (1 equipment, 4 instrument, 6 valve, 3 other)
Equipment (1)
| Tag |
Description |
Details |
Connects to |
| SIC-VSD-Pump |
Pump Driven by a Variable Speed Motor |
Variable speed drive centrifugal pump unit with motor (M) |
— |
Instruments (4)
| Tag |
Function (ISA 5.1) |
Description |
Details |
Connects to |
| LE-ultrasonic |
LE = Level Element |
Ultrasonic Level Sensor |
Ultrasonic level element/sensor symbol |
— |
| LE-conductivity |
LE = Level Element |
Conductivity Probe Level Sensor |
Conductivity probe type level sensor |
— |
| LE-float |
LE = Level Element |
Ball Float Level Sensor |
Ball float type level element |
— |
| FE-flow-element |
FE = Flow Element |
Flow Element Code Balloon |
To be associated with flow element sensor |
— |
Valves (6)
| Tag |
Description |
Details |
Connects to |
| PSV-sust |
Globe Diaphragm Type Pressure Sustaining Valve |
Self-actuated regulating valve, globe diaphragm type |
— |
| PCV-reg |
Globe Diaphragm Type Pressure Regulating Valve |
Self-actuated pressure regulating valve |
— |
| PRV-relief |
Globe, Diaphragm Type Pressure Relief Valve |
Globe, diaphragm type pressure relief valve |
— |
| PSV-spring |
Spring Actuated Pressure Relief Valve |
Spring actuated pressure relief valve |
— |
| HOCV |
Hydraulically Operated Control Valve |
Contains hydraulic actuator and pressure tapping points |
— |
| HOSV |
Hydraulically Operated Solenoid Valve |
Contains solenoid pilot control |
— |
Other (3)
| Tag |
Description |
Details |
Connects to |
| HAZ-LEVEL-B |
Hazard Level B (Average) |
Piping hazardous classification level B (eg. Chlorine, Caustic) |
— |
| HAZ-LEVEL-C |
Hazard Level C (Low) |
Piping hazardous classification level C (eg. Polymer, High Pressure) |
— |
| HAZ-LEVEL-E |
Hazard Level E (Negligible) |
Piping hazardous classification level E (eg. Water) |
— |
Notes on drawing
- 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