How has the Operator determined the probability of lightning strike on his warehouse?
The frequency of lightning strikes in the UK is between 0.1 and 0.6 flashes to the ground per km2 per year. Most modern warehouse, with the exception of high-bay warehouses, are not more than 15m to the ridge and the frequency of a lightning strike on the building can be determined by multiplying the appropriate location figure by the area of the warehouse in km2.
