Hydraulic Shock in Ammonia Incident

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Published on Mar 26, 2015

CSB safety video detailing key lessons for preventing hydraulic shock in ammonia refrigeration systems based on the CSB’s investigation into the accident at Millard Refrigerated Services Inc. on August 23, 2010. 32,000 pounds of anhydrous ammonia were released to the atmosphere, resulting in over thirty offsite workers being hospitalized – four in an intensive care unit.