TECHNICAL MEASURES FOR STRENGTHENING ANTI-LIGHTNING SAFETY AT GAS TRANSMISSION STATION
Sinopec Natural · Petrochemical Safety and Environmental Protection Technology · 2015
When designing a natural gas transmission station,a comprehensive analysis shall be made on the selected site.And such factors as the weather conditions,distribution features of thunderstorm,lighting density,features of lightning current,change rules of the cloudto-ground lighting and specific resistance of soil shall be taken into consideration.The analysis methods combine the results from the risk of life loss R1,risk of economic loss R4 with those from actual reconnaissance and survey.Design and construction of lightning protection shall be the focus based on the lighting protection characteristics of process system,cathodic protection system,electric system,automatic control and communication system.Various protective measures are taken such as lightning tower,air termination,lightning strip,ground lead,lightning arrester,surge protector,metallic shield and grounding and so forth.It is helpful to improve the smooth and safe operation of natural gas transmission station to strengthen the lightning protection system(LPS),prevention of lightning induced over-voltages,equipotential connection,equipment ground and anticorrosion and antirust of devices.