Study on Lightning Arresting for Tank Farms

Due to the imperfection of lightning Arresting Codes for Petroleum Industry and less scientific management, fire caused by lightning frequently occurs, causing enomous economic loss, threatening human life and safety. For prevention and removal of the hidden damage, investigations were conducted on light arresting measures in operation with the analysis on their effects. Specially pointed out are the following drawbacks of the individual lightning rods: ①Secondary effect; ②conterattack to the adjacent protected objects; ③Damage of contact votage and step voltage to humanbeings and domestic animals; ④Unreliable protected scope; ⑤Possible explosion and fire of flamable and explosive objects. Introduced inthis paper is a kind of device——Lightning Arrestor, newly developed based on lightning rods, which has 4characteristics comparatively: ① 100% of the lightning developed from the ground can be arrested; ②Lightning to the ground can be reduced by 75%;③Secondary effect of lightning can be avoided; ④Large scope of protection can be available, for which reason, radio lightning arrestors with fewer rods are recommended for application.