SAFETYWorking together in electronics.
Safety is no accident.
Safety Concerns
•Electrical•Physical •Equipment
Electrical• Cord plugs• Frayed cords• Extension cords• Power Supplies• Grounding of live electronics• One hand meter reading• Batteries• Circuit Breakers• Power Strips
Unplugging Cords
Unplug by the plug, like this
Not by the cord, like this
Damaged Cords
Broken insulation may expose live conductors.
Cord Plugs
Three prong plugs provide a safety ground path for a circuit fault. Never cut off a 3rd prong. Use a 2-prong adapter instead if you must.
Extension Cords
Be careful of cords across walk ways.
High voltage & Liquids
Water & Electricity do not mix!
Circuit Loading
Circuits, especially power strips can be overloaded if too many things are drawing power. Too much current flow can cause a fire.
Explosive power in a battery
One Hand Meter Reading
Check “live” circuits with one hand securely away from voltage. This will protect the technician from fatal electrocution.
Physical Safety• Burns• Cuts• Broken bones• Breathing• Eyes• Ears
BURNS
• DO NOT touch anyone with the soldering iron!
• Be careful with a heat gun.• Remove rings when working with electricity.
BURNS
• Heat Gun• Soldering
Cuts• Wire cutters• Wire strippers• Utility knives• Saws• Drills• Metal shears
Hack Saw
Use a vise or otherwise hold the work steady for cutting. Keep fingers away from the blade.
Broken Bones
• Hammering• Metal brake & shear
Breathing
Paint Solvents Soldering
Ladders! Big Safety Hazard!
Eyes• Soldering• Cutting wire• Hand tools• Power tools• Grinding
Ears• Grinding• Hammering• Music !
First Aid Kit
The first aid kit is in Mr. Call’s front table drawer
Fire Extinguisher
The fire extinguisher is located by the back emergency exit door
What should you find when you enter a new work site?
• Exits– Study the exit plan– Practice for emergencies
• Safety equipment– Fire extinguisher, fire blanket, fire alarms,
power cut-off switches, gas shut-off valves, emergency lights
What should you do when working at a lab or job site?
• Tag out / Lock out• Protective clothing
– Hard hat– Boots or shoes– Apron
• OSHA (Occupational Safety & Health Administration)– Safety training– SDS or MSDS (Material Safety Data Sheet)
Respect• Be respectful and careful with all
equipment and tools.• Treat others with respect.• NO HORSEPLAY !• Playing around with electricity could make
you lose your life, your job, your health, or your credit for this class.
The Speed of Light !
186,282 miles / s
Or 300 million meters / s
Or 7 ¼ times around the world in one second.
The point: You can’t outrun electricity!
Electricity is just a bit slower.