Electrical Shock And Explosion In Transformer Room

 

The purpose of this safety alert issued is: To inform people about the danger of arc flashover. Provide guidance on how to do maintenance work on high power electrical substation. Background An accident had occurred in August 2010, which involves arc flashover in a transformer room in Petaling Jaya.4 workers were severely injured while one of them suffered burns over 50% of the body and receiving treatment in Intensive Care Unit (ICU). The accidents occur when a worker was loosening the power supply wire to the Circuit Breaker when accidently a part of victim body (head) touching or entering the clearance space of 11KVA Power System. As a result, short circuit and flashover occurred which resulted in explosion that injured the workers. Forensic investigations find out that the working space was not suitable for such risky and dangerous job. For example: involving High Voltage Current.The divider that separate between electrical powered section and repaired section were missing. This can cause any part of your body to be exposed in danger of being electrocuted if the work is not done carefully.		Photo : Circuit Breaker System involved in accident
		Recommended Control Measure Hazards of working in high current area should be indentified and risk assessments should be conducted. Appropriate safety measure and safety control should be done before maintenance work can be done. All electrical current in the working area should be switched off and isolated before maintenance work could be done. Only trained and competent workers are allowed to carry out maintenance work in high current operation.