Petrochemical lightning warning system

Why should petrochemical enterprises build lightning protection monitoring and early warning system? There are four main factors: the petrochemical industry continues to develop, and safety accidents are increasing year by year; The nature of the hazardous industry determines the higher and comprehensive requirements for intelligent lightning protection; Defects of lightning protection measures of foundation; The state attaches great importance and requirements. With the increase of safety accidents in chemical plants year by year, more comprehensive and intelligent requirements are put forward for lightning protection measures, and it is imperative to install lightning protection monitoring and early warning system in chemical plants.

The characteristics of the petrochemical hazardous industry determine that lightning protection monitoring and early warning system must be installed, because the hazardous chemical industry has: geographical location is generally located in remote open areas, a large number of steel facilities and equipment exposed, easy to mine; The soil in the region is strong acid, alkali and corrosive environment; Toxic, harmful, flammable, explosive and other characteristics of raw materials and products; Therefore, the security risks are greater, the protection requirements are higher, and the importance of protection is stronger.

At present, the meteorological system mainly uses Doppler radar, satellite and other means to provide a long time, large area lightning forecast. There is currently no way to accurately predict where and when short-duration small area thunderstorms will occur. Lead to local lightning, thunderstorm cloud warning, forecast blank, this kind of local thunderstorms to the key industries have brought great harm. According to IEC 62793, the alarm signal that can appear within 5 to 30 minutes before lightning strikes is called a lightning warning system.

The essence of lightning is that when the electric charge in the lightning cloud continues to change and increase, the electric field strength will change and strengthen accordingly, so it can be predicted whether there is lightning strike phenomenon by monitoring the change of electric field strength and analyzing its change trend.