This standard specifies the basic principles and measures for avoiding or reducing lightning hazards in petroleum facilities during the production, transportation, and storage of petroleum and petroleum products. This standard is applicable to the lightning safety protection of petroleum facilities. 2 Normative References: The clauses in the following documents become clauses of this standard through reference in this standard. For dated reference documents, all subsequent amendments (excluding corrected content) or revisions are not applicable to this standard. However, parties to agreements based on this standard are encouraged to study whether the latest versions of these documents can be used. For undated references, the latest version applies to this standard. GB 50057-1994 Code for Design of Lightning Protection of Buildings (Revised in 2000) 3 Basic Principles for Preventing Lightning Hazards 3.1 Petroleum and petroleum products should be stored in sealed containers and avoid the accumulation of oil and gas mixtures around the containers. 3.2 Areas where oil and gas may leak or accumulate should avoid spark discharge between metal conductors. 3.3 Fixed top metal container accessories (such as breathing valves and safety valves) should be equipped with flame arresters. 3.4 Petroleum facilities should adopt lightning protection grounding. The grounding devices for lightning protection, anti-static, electrical equipment, protection, and information systems should be shared.