Safety Precautions with Electrical and Electronic Equipment
Safety Precautions for Working with Electrical and Electronic Equipment:
- Avoid Contact with Voltage Sources:
- Turn off power before touching circuit parts to prevent electrical shocks.
- Do Not Work Alone:
- Have someone nearby or ensure a telephone is available in case of emergencies.
- Avoid Working When Fatigued:
- Refrain from working when tired or under the influence of medications that induce drowsiness.
- Remove Metallic Jewelry:
- Take off rings, watches, and metallic jewelry before working on circuits.
- Know Proper Procedures:
- Learn and understand correct procedures and potential hazards before working on equipment.
- Check Power Cords:
- Ensure power cords are in good condition, with no missing or bent grounding pins.
- Maintain Tools:
- Keep tools well-maintained, including checking insulation on metal tool handles.
- Make High-Voltage Connections Last:
- When making circuit connections, connect to the highest voltage point last.
- Avoid Power Supply Terminals:
- Steer clear of direct contact with power supply terminals.
- Use Insulated Wires and Connectors:
- Always use insulated wires and connectors with insulating shrouds.
- Minimize Cable Length:
- Keep cables short and connect polarized components correctly.
- Report Unsafe Conditions:
- Report any unsafe conditions promptly.
- Follow Workplace Rules:
- Adhere to workplace and laboratory rules; avoid having drinks or food near equipment.
- Handling Energized Conductors:
- If someone is unable to release an energized conductor, switch off power immediately or use nonconductive material for separation.
- Lockout/Tagout Procedure:
- Implement lockout/tagout procedures to prevent accidental power-on during circuit work.
- Handle Tools Properly:
- Use tools correctly and maintain a tidy work area.
- Wear Safety Glasses:
- Wear safety glasses, especially during tasks like soldering and wire clipping.
- Power Shutdown and Capacitor Discharge:
- Turn off power and discharge capacitors before touching any part of a circuit.
- Know Emergency Locations:
- Be aware of emergency power-off switches and emergency exits.
- Respect Safety Devices:
- Never override or tamper with safety devices like interlock switches or ground pins.
- Wear Dry Shoes:
- Wear dry shoes, and avoid standing on wet or metal floors when working on electrical circuits.
- Avoid Wet Hands:
- Never handle instruments with wet hands.
- Verify Circuit Status:
- Double-check the status of a circuit with a reliable meter before handling.
- Set Current Limiters:
- Set current limiters on electronic power supplies to prevent excessive currents for the test circuit.
