石油产品在储存和运输过程中的损失分为两类:一是因在罐中的蒸发、泄漏和沉积所造成的物理损失(即“材料损失”);二是因发油人或收油人测量和计算错误,产品数量不够所造成的“非材料损失”。物理损失包括:油罐和运输槽车的溢流和泄漏;在罐壁和罐底上的沉积(取决于产品的粘度,为0.01—0.1％);油罐排水的损失;油罐装油或放空时, There are two types of losses in the storage and transportation of petroleum products: one is the physical loss (ie, “material loss”) caused by evaporation, leakage and deposition in the tank; and Measurement and calculation of errors, the number of products caused by the “non-material loss.” Physical losses include: Spills and leaks of tanks and tankers; Deposition at the tank wall and tank bottom (depending on the viscosity of the product, 0.01-0.1%); Drainage losses from the tank; When empty,