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Generator Safety


Generator Safety. Portable gas generators convert mechanical energy ... 5 construction deaths due to electrical shock from portable generators between 1991-2004 ... – PowerPoint PPT presentation

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Title: Generator Safety

Generator Safety
  • Portable gas generators convert mechanical energy
    into electrical energy
  • The mechanical energy is provided through the
    means of an internal combustion engine

Potential Hazards
  • Carbon monoxide poisoning
  • Electrocution
  • Fire / explosion
  • Noise pollution / distraction

Safety Statistics
  • 5 documented construction related deaths from
    carbon monoxide poisoning between 1991-2004
  • 5 construction deaths due to electrical shock
    from portable generators between 1991-2004
  • 2 construction industry deaths between 1991-2004
    due in part to noise pollution caused by portable

Related Accidents
  • Several accidents and deaths have occurred where
    generators have been used in confined spaces
    resulting in the build-up of poisonous carbon
    monoxide gas. The Consumer Product Safety
    Commission reports that between 1999 and 2004
    portable generators caused 172 CO poisoning
    deaths in the U.S.

  • The risk from electrical shock due to improperly
    grounded receptacles and use in wet conditions
    has led to several accidents and deaths

OSHA Regulations
  • 1926.404(b)(1)(ii)
  • Receptacles on a two-wire, single-phase portable
    or vehicle-mounted generator rated not more than
    5 kW, where the circuit conductors of the
    generator are insulated from the generator frame
    and all other grounded surfaces, need not be
    protected with ground-fault circuit interrupters.
    (Otherwise GFCI is required)

OSHA continued
  • 1926.404(f)(3)
  • (i) Portable generators under the following
    conditions, the frame of a portable generator
    need not be grounded and may serve as the
    grounding electrode for a system supplied by the
  • (A) The generator supplies only equipment mounted
    on the generator and/or cord- and plug-connected
    equipment through receptacles mounted on the
    generator, and
  • (B) The non-current carrying metal parts of
    equipment and the equipment grounding conductor
    terminals of the receptacles are bonded to the
    generator frame

Safety Procedures
Carbon Monoxide Protection
  • Carbon monoxide is produced by engine combustion.
    It is odorless and causes suffocation by
    depriving the body of oxygen.
  • Generators should never be used in confined
    spaces nor near doors, windows, or vents.
  • Generators should only be used Outdoors.
  • If you get dizzy or feel sick while using a
    generator, get to fresh air immediately
  • do not delay

Electrical Shock Prevention
  • Appliances should be connected to generators
    using heavy-duty extension cords designed for
    outdoor use. The cords should be three-pronged.
  • Make sure cords are rated for higher wattages
    than the total of all appliances connected to it.
  • Generators should also be placed so that attached
    cords are kept away from high traffic areas and
    do not present a tripping hazard.

Electrical Shock Prevention
  • Some generators come with onboard ground fault
    circuit interrupters. It is good practice to use
    plug-in GFCIs on units that do not have them
    onboard. OSHA requires the use of GFCIs on
    generators above 5 kW.

Electrical Shock Prevention
  • Generators should not be used in wet conditions
    if at all possible.
  • Protect the generator from moisture but be aware
    of carbon monoxide risks while doing so.
  • Always dry hands before touching a generator if
    they are wet.

Fire Prevention
  • Fuel for generators should be stored away from
    living areas in properly labeled, non-glass
    safety containers.
  • Generators should be shut down and allowed to
    cool off before refueling to prevent ignition of
    fuel or vapors.

Noise Precautions
  • Generators should be placed as far from work
    operations as possible to limit noise pollution
  • Excessive noise can cause distractions that lead
    to unsafe work practices
  • If noise cannot alleviated and is above safe
    levels, proper hearing protection should be worn

Additional Information
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