Inert pads and purges are provided on tanks to protect the contents of the tanks from contamination, maintain nonflammable atmospheres in the tanks, and suppress vapor emissions from the tanks.

• 惰性置换和吹扫是为了保护储罐内的物质不被污染，保持储罐内不燃的气体，抑制储罐内蒸汽的溢出。