We have steel water tank with 100m diameter and 23m height
above the ground level. Also, we have two rooms 40m and 46m far from the steel
tank. The inquiries are:
1- Should I make air terminal for lightning protection above
the steel tank or itself protected as the steel sheet of tanks have thickness
not less than 5mm and only bonded the tank bottom sheets to ground terminal.
2- Should I make lightning protection for those two concrete
rooms (each 6m height and far from tank 40m, 46m respectively) or they locate
in the protection zone of tank and don’t need lightning protection.
Thank for all in advance