Four-grade protecting system for preventing city chemical goods from leakage

This paper introduces a four-grade protecting system, which consists of collective design, interlock, design, linkage design and synthesizing design and which is designed to prevent chemically dangerous goods kept up in kettles from leaking, eliminate any hidden trouble and potential accidents, reduce the chances of disasters and finally improve preventing techniques. It can effectively prevent leakage,. poisoning, polluting environment, fire and explosion from happening and extending. As a result, we could avoid the loss of a lot of lives and property, reduce the impact resulting from disasters occurring in city's industrial and agricultural production and in city dwellers' life as well, maintain the stability of the society and country. as a whole. The four-grade protecting system has proved to be of great application value in the storage zone of current city's chemical goods so as to prevent chemically hazardous goods stored in kettles from leaking and disasters from happening.