Split-second risk of arc flash

WorkSafe Qld has released a new film highlighting the danger of arc flash, which can happen in a split second, causing serious burns, injury and death, as well as damage to property and equipment.

An arc flash is a release of electrical energy that causes an explosion that can reach temperatures of up to 20,000 degrees Celsius. It usually occurs in large switchboards but can also occur in smaller switchboards, electricity supply pillars or large electrical equipment.

Common causes of arc flash include:

• unsafe work practices and procedures;
• foreign materials;
• breakdown of busbar insulation;
• electrical equipment failure such as a switch, circuit breaker or loose cables;
• contacting energised equipment with uninsulated tools;
• using test equipment not designed or rated for the job.
   

Queensland currently has the highest rate of arc flash incidents in Australia, with 47 serious incidents and one death over the past 11 years. The state’s work safety body emphasised that the best way to eliminate the risk of arc flash is to choose not to work live; however, if work can’t be rescheduled for when the power is off then it is crucial that electricians control the risks and follow safe work procedures.

Working near live parts can be just as dangerous as working on live parts, WorkSafe Qld warned.

For more information, visit: https://www.worksafe.qld.gov.au/safety-and-prevention/hazards/electricity/electrical-arc-flash.

Image credit: ©stock.adobe.com/au/Lane Erickson