Carbon Monoxide dangers of using portable generators

The purpose of this Safety Alert is to remind workers and persons conducting a business or undertaking (PCBUs) of the dangers of carbon monoxide exposure when using portable generators.

Background

Two tradesmen were hospitalised due to high levels of carbon monoxide exposure whilst refurbishing a Darwin office building. Power to the building had been cut to allow electrical work to commence and a generator was setup in the buildings stairwell to power lights for the tradesmen.

Carbon monoxide is a poisonous gas emitted during the use of petrol, gas and, to a lesser extent, diesel powered motors. Carbon monoxide is colourless, tasteless and odourless and exposure at high levels can lead to death.

Contributing factors

• The generator was set up and operated in an enclosed space (the stairwell).

Action required

• Before using a portable generator, workers and PCBU’s should read and follow the manufacturer’s safety instructions
• Portable generators should never be operated indoors or in enclosed, or semi enclosed areas, even if ventilated
• Portable generators should be operated outdoors and away from open windows, doors or vents that could allow the carbon monoxide to seep indoors
• Workers who feel sick, dizzy, or weak while working near a generator, should get to fresh air right away
• As an additional control measure, consider using a portable battery-operated carbon monoxide alarm.

Further information

Guidance publications

• Guidance Note - Prevention of Carbon Monoxide poisoning from petrol and gas powered equipment - WorkSafe Western Australia