Generator safety: Deaths from CO poisoning on the rise

Deaths from carbon monoxide poisoning associated with the use of portable generators are increasing, according to new information released by the Consumer Product Safety Commission.

There were 85 carbon monoxide poisoning deaths attributed to the use of generators in 2006, the year covered in the latest CPSC study. The estimated number of generator-related CO fatalities doubled in 2005 and 2006 from the two prior years, with a combined estimate of 182 fatalities in 2005 and 2006 compared to an estimated 92 in 2003 and 2004, the agency reported. One reason for the sharp spike in 2005 was likely a high number of severe weather events that caused widespread power outages, including hurricanes Katrina and Rita.

Non-weather related CO fatalities associated with generator use are also on the rise—by 53 percent from 2004 to 2005, and another 41 percent from 2005 to 2006. In contrast to 2005, the busiest hurricane season since records have been kept, there were no hurricanes that made landfall in the U.S. in 2006.

Recently, Underwriters Laboratories asked us to help get the word out on generator safety and to call attention to its first standard for portable generators, which took effect in March. The standard—UL 2201—addresses hazards associated with the typical use of generators, primarily those related to CO poisoning.

According to UL, the new performance requirements facilitate safe outdoor use of UL-listed portable generators during storms or poor weather conditions, as well as provide clear usage labels for consumers to help reduce the known risks of CO poisoning and electrocution.

Here are some tips on generator safety that our readers have found helpful..

• Never operate a generator indoors or in any enclosed or partially enclosed area—even if you think you can adequately ventilate the space.
• Keep generators away from windows, doors, air conditioners, and vents where gases can enter the house. Outside, always be conscious of where the exhaust gas is moving, and stay out of its path.
• Maintain working carbon-monoxide detectors throughout your home.
• Properly store and handle the gasoline. Never refuel the generator while it's running; stop the engine and allow it to cool first.
• Store gasoline safely. Keep it outside in a cool place away from the house or a heat source. Treat gas with a stabilizer (about $5 to treat 25 gallons) to preserve it for up to a year. And dispose of old fuel by using it in mowers and other outdoor equipment.
• Be sure the generator is properly grounded, and use extreme caution around wet electrical cords. Use a portable GFCI device with extension cords whenever you use your generator.
• Never connect a generator directly to a home's wiring. If the generator is used to power home circuits, always use a properly installed transfer switch (about $600 installed).
• Keep connections safe. For small generators, use extension cords rated for the wattage they're carrying.

For more information see our most recent report on generators including Ratings and recommendations.

http://www.cpsc.gov/cpscpub/pubs/portgen.html

Portable Generator Hazards

Consumer Product Safety Commission Safety Alert

Portable generators are useful when temporary or remote electric power is needed, but they also can be hazardous. The primary hazards to avoid when using a generator are carbon monoxide (CO) poisoning from the toxic engine exhaust, electric shock or electrocution, fire and burns.

Every year, people die in incidents related to portable generator use. Most of the incidents associated with portable generators reported to CPSC involve CO poisoning from generators used indoors or in partially-enclosed spaces.

Carbon Monoxide Hazards

When used in a confined space, generators can produce high levels of CO within minutes. When you use a portable generator, remember that you cannot see or smell CO. Even if you do not smell exhaust fumes, you may still be exposed to CO.

Danger labels are required on all portable generators manufactured or imported on or after May 14, 2007.

If you start to feel sick, dizzy, or weak while using a generator, get to fresh air RIGHT AWAY. DO NOT DELAY. The CO from generators can rapidly kill you.

Follow these safety tips to protect against CO poisoning.

• NEVER use a generator inside homes, garages, crawlspaces, sheds, or similar areas, even when using fans or opening doors and windows for ventilation. Deadly levels of carbon monoxide can quickly build up in these areas and can linger for hours, even after the generator has shut off.

• Follow the instructions that come with your generator. Locate the unit outdoors and far from doors, windows, and vents that could allow CO to come indoors.

• Install battery-operated CO alarms or plug-in CO alarms with battery back-up in your home, according to the manufacturer’s instructions. CO alarms should be certified to the requirements of the latest safety standards (UL 2034, IAS 6-96, or CSA 6.19.01). Test batteries monthly.

To avoid CO poisoning when using generators:

• Never run generators indoors, including garages, basements, crawlspaces and sheds.
• Get to fresh air right away if you start to feel dizzy or weak.

Electrical Hazards

• Generators pose a risk of shock and electrocution, especially if they are operated in wet conditions. If you must use a generator when it is wet outside, protect the generator from moisture to help avoid the shock/electrocution hazard, but do so without operating the generator indoors or near openings to any building that can be occupied in order to help avoid the CO hazard. Operate the generator under an open, canopy-like structure on a dry surface where water cannot reach it or puddle or drain under it. Dry your hands, if wet, before touching the generator.

• Connect appliances to the generator using heavy-duty extension cords that are specifically designed for outdoor use. Make sure the wattage rating for each cord exceeds the total wattage of all appliances connected to it. Use extension cords that are long enough to allow the generator to be placed outdoors and far away from windows, doors and vents to the home or to other structures that could be occupied. Check that the entire length of each cord is free of cuts or tears and that the plug has all three prongs. Protect the cord from getting pinched or crushed if it passes through a window or doorway.

• NEVER try to power the house wiring by plugging the generator into a wall outlet, a practice known as “backfeeding.” This is extremely dangerous and presents an electrocution risk to utility workers and neighbors served by the same utility transformer. It also bypasses some of the built-in household circuit protection devices.

Fire Hazards

• Never store fuel for your generator in the home. Gasoline, propane, kerosene, and other flammable liquids should be stored outside of living areas in properly-labeled, non-glass safety containers. Do not store them near a fuel-burning appliance, such as a natural gas water heater in a garage.

• Before refueling the generator, turn it off and let it cool down. Gasoline spilled on hot engine parts could ignite.

5123/0407

http://www.cpsc.gov/cpscpub/pubs/portgen.html