EMERGENCY DESORPTION SYSTEM FOR LOADING ARM

摘要

PROBLEM TO BE SOLVED: To provide an emergency desorption system for loading arm capable of preventing occurrence of liquid air at a surface of a valve body at the time emergency desorption.SOLUTION: There are provided a first valve unit 10 including a first valve case 15 forming a low temperature fluid passage 13 and a vacuum layer 14; a first connection flange 12 at one end of the first valve case; and a first emergency shutting ball valve 11, and a second valve unit 20 including a second valve case 25 forming a low temperature fluid passage 23 and a vacuum layer 24; a second connecting flange 22 at one end of the second valve case; and a second emergency shutting ball valve 21 capable of shutting the low temperature fluid passage in the second valve case. At a location near at least one emergency shutting off ball valve of the first and second valve units are arranged inert gas pouring means 50A, 50B capable of pouring inert gas into the low temperature fluid passage at the connection flange rather than the ball valve.SELECTED DRAWING: Figure 2