A survey will come in two forms, either as a single line diagram or as a table.
There are two important figures to look at;
The first is the heat energy of the arc. This will be in cal/cm². A value above 40 cal/cm² means that death is highly probable, even if adequately rated PPE is worn. It is therefore imperative that methods to reduce the arc energy are look at and applied first. Although PPE for energies below 40 cal/cm²is readily available, it only really becomes easy to wear at half that energy level or less.
The second figure is the distance at which a 2nd degree burn could be suffered. This can be a surprisingly long distance away. People working within this zone need to be aware of arc flash hazards and may need to be issued with PPE to suit.
From looking at these figures, it can be decided what areas need to be tackled first and what methods of protection need to be employed.