一、概述汽车油罐车应具备油气回收系统,装油时能够将汽车油罐内排出的油气密闭输入储油库回收系统,往返运输过程中能够保证汽油和油气不泄漏,卸油时能够将产生的油气回收到汽车油罐内。采用抽真空或充压的方式,检测油气回收系统对压力的保持程度。二、不确定度评定1.油罐车油气回收系统密闭性不确定度分析(正加压) First, an overview Car tanker should have oil and gas recovery system, the oil can be installed when the car oil tank sealed oil and gas discharged into the storage tank recovery system, from the transport process to ensure that no petrol and oil and gas leakage, unloading can produce The oil and gas recovered into the car tank. Using vacuum or pressure-filled way to detect the degree of pressure on the oil and gas recovery system to maintain. Second, the uncertainty of assessment 1. tanker oil and gas recovery system sealed uncertainty analysis (positive pressure)