Explosive atmospheres, Part 40: Requirements for process sealing between flammable process fluids and electrical systems
爆炸性环境 第40部分:易燃工艺流体和电气系统之间的工艺密封要求
Adopts IEC TS 60079-40 Ed. 1.0 (2015) to provide specific requirements for process sealing between a flammable process fluid and an electrical system where a failure could allow the migration of the process fluid directly into the premises wiring system.