Foam suppression systems concentrations

A total of six tests was performed. Each involved transferring liquid chlorine from one or more 1-ton chlorine containers to the open pan. After the pool of liquid chlorine had stabilized, measurements were made of downwind concentration with no mitigation procedure applied. Then one of several different mitigation procedures was performed on the liquid pool. In the first and last tests, the only mitigation technique used was water spray nozzles to knock down the chlorine vapor cloud. In tests 2, 3, and 5, different vapor suppression foams were applied to the liquid pool surface in combination with water spray from the nozzle system and measurements were made of the downwind concentration to determine the effectiveness of the procedure. Test 4 used no foam but did use the water spray nozzles and portable water nozzles. 

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