Design and installation method of simple lightning rod for open tank
You need to install a higher than open tank lightning about five meters height, the higher the better, but if a sharp, conductive, easy to attract lightning. Then the apical conductive Hugh, and the earth is best buried in the earth below three meters.
Lightning protection of high-rise buildings. The lightning protection earthing, the protection of the electrical equipment and the earthing of the electrical equipment are mixed together in the modern high-rise buildings, which form a hybrid grounding system. Using the reinforced concrete foundation of the building as grounding pile, the grounding resistance is usually below 4W. Although the use of steel based natural grounding body can meet the requirements of the grounding resistance, but still need artificial grounding installation level, the main building foundation into grounding grid, which is beneficial to the equilibrium potential.
1) flash point flammable gas is less than or equal to the ambient temperature of open storage tanks and buildings, normal volatile gas produced belongs to a class of lightning protection of buildings, should be installed with a lightning rod, impulse grounding resistance is less than 10W.2) a flammable liquid tank with a breather valve, the thickness of the top plate of the tank is not less than 4mm, and belongs to the second kind of lightning protection building. The lightning rod can be directly installed on the tank top, and the impact resistance is not more than 10W.3) flammable liquid tank wall thickness of not less than 4.mm, belong to the third category of lightning protection building, do not install lightning rod, only grounding, the impact grounding resistance is not greater than 30W.4) the wall thickness of the floating tank and spherical tank is greater than 4mm, only for the ground, but the floating roof can be reliably connected with the soft copper wire or steel wire with a cross section of 25mm2 for the tank.5) grounding type tank over 0.5m soil, may not consider the lightning protection facilities. If the breather valve leads to the ground, it needs to be treated as a lightning protection at the breather valve.
