I have looked into this for many years and have heard the rumors you can knock down that chlorine cloud and all you’ll have to deal with after that is the hydrochloric acid on the ground. Well, I guess it sounds good, but this is why I feel it is very important to establish a Research Team at EVERY hazardous materials incident.
The Research Team is where we get those important FACTS about chemicals that assist us on how to drive this incident. IDLH, vapor density, specific gravity, vapor pressure, solubility etc. Solubility (pg 93 H.R.) capable of dissolving in a solvent, or in our case water. According to the NIOSH guide, or any credible source you may want to use, the solubilty of chlorine is 0.7%. So it means it has some soluble aspects to it, however 0.7% in my book, is NOT enough to emphatically state that we can knock that cloud down and save the day, as a matter of fact, if you take the Festus MO, video and the amount produced there, you would be pissing in the wind! So David Burtch, I agree with you and the Chlorine Institute, you cannot knock down a chlorine cloud. Now can you move it, perhaps.
Using hose streams/master streams to move the cloud is a bit risky. You may put guys in a position that is not good. It could move around, cut off escape points etc. You will have product on the ground and spread out that will have to be dealt with, and you need A LOT of water. So is it worth it?
Have you taken the DOT quiz? Test your DOT Placard Knowledge