PROCESS AND INSTRUMENTATION DIAGRAMS STANDARD DRAFTING SYMBOLS CHART SA WATER STANDARDS
This drawing is a legend/standard drafting symbols chart for SA Water process and instrumentation diagrams. It defines standard line types, self-actuated regulating valves, actuators, piping valves, fittings, general instrument functions, level sensors, and flow rate primary elements.
Source: TS-112-Process-and-Instrument-Diagrams.pdf · page 16/27 · Drawing: 4003-00001-01 rev 01 · Components: 8 (1 equipment, 3 instrument, 4 valve)
Equipment (1)
| Tag | Description | Details | Connects to |
|---|---|---|---|
| SIC-XXX | Pump driven by a variable speed motor | Pump driven by a variable speed motor diagram standard block definition | — |
Instruments (3)
| Tag | Function (ISA 5.1) | Description | Details | Connects to |
|---|---|---|---|---|
| LE-xxxx-1 | LE = Level Element (Ultrasonic) | Ultrasonic Level Sensor | Ultrasonic level element symbol definition | — |
| LE-xxxx-2 | LE = Level Element (Conductivity Probe) | Conductivity Probe Level Sensor | Conductivity probe level element symbol definition | — |
| LE-xxxx-3 | LE = Level Element (Ball Float) | Ball Float Level Sensor | Ball float level element symbol definition | — |
Valves (4)
| Tag | Description | Details | Connects to |
|---|---|---|---|
| PSV-xxx-1 | Globe, diaphragm type pressure sustaining valve | Globe, diaphragm type pressure sustaining valve symbol definition | — |
| PCV-xxx | Globe, diaphragm type pressure regulating valve | Globe, diaphragm type pressure regulating valve symbol definition | — |
| PRV-xxx | Globe, diaphragm type pressure relief valve | Globe, diaphragm type pressure relief valve symbol definition | — |
| PSV-xxx-2 | Spring actuated pressure relief valve | Spring actuated pressure relief valve symbol definition | — |
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
- DO NOT SCALE PAPER PRINT