Hazardous locations are a fairly specialised part of the electrical trade; a lot of "cussin' and dis-cussin' " goes into deciding just where the "classified location" boundaries are.
In the USA, our code typically defines the area around the pumps, to a heigth of 12 ft, to be "in the zone." So, naturally, all the lamps are mounted higher than that. (Not to mention the risk of a 13' truck trailer hitting them!)
