Safer Together: Arc flash whilst using low voltage electrical equipment

A crew was setting up for welding activities. The genset (i.e. portable power supply consisting of an engine and generator) was positioned 8m from a pipeline which was considered a hazardous area zone.

The crew visually inspected and passed the generator, heavy duty extension lead and RCD push button test before commencing the task.

The in-date and tagged extension lead failed following an arc flash at the socket after being plugged into a lead from the HDPE heating plate.

The arc flash continued for approximately 5 seconds until the emergency stop button was activated.

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