Based on engineering examples the paper introduces some matters that need to be considered in the design of water spray fire extinguishing system,such as determination of design flow,selection and arrangement of spray head,arrangement of deluge valve block and laying of water spray pipeline,as well as operation and control of system and selection of water source and pumps,etc.

Experiment on release of crusted residual oil in Zihe Riverbed under the condition of rainfall eluviation;

Taking the tall atrium of a building as an example,the technical and economic characteristics of deluge system and intelligent fire sprinkler system were analyzed,and the optimization plan for the fire extinguishing system in the tall atrium was established.