XVII. ELECTRICAL SAFETY
A. General Instructions
- All 110-volt outlets in the laboratories must provide ground circuit.
- All AC-powered electrical devices used in the laboratories must either have grounded power cord and plug or be marked “double insulated” by the manufacturer.
- Frayed or damaged cords must be replaced; DO NOT tape or splice them.
- Electrical equipment may not be used when in a damaged condition.
- Turn the equipment’s power switch to the “off” position before connecting to or disconnecting from an electrical outlet.
- Always unplug equipment by pulling on the plug, not the cord.
- Do not handle electrical equipment with wet hands or when standing on a wet surface.
- Locate electrical equipment to minimize the possibility of water or chemical contact
- Ground-fault circuit interrupters must be used in all instances where electrical equipment is within six feet of a water source.
B. Static Electricity and Sparks Hazards
Static electricity or sparks can ignite flammable vapors. Protect against this possibility by grounding and bonding containers and equipment.
Some common sources of sparks and electrostatic discharges are:
- metal tanks and containers
- plastic laboratory aprons
- high pressure gas cylinders upon discharge
- brush motors
- areas with low relative humidity and fiber carpeting