![]() ![]() This caused the hot high-pressure ammonia gas to rapidly condense into a liquid. This resulted in both hot, high-pressure gas and extremely low temperature liquid ammonia to be present in the coils and associated piping at the same time. While doing some troubleshooting an operator cleared alarms in the control system, which reset the refrigeration cycle on a group of freezer evaporators that were in the process of defrosting. The next day, on August 23, 2010, the system regained power and was up and running, though operators reported certain problems. ![]() During that time the refrigeration system was shut down. The CSB’s video is available at its YouTube channel and at The CSB’s investigation found that the day prior to the accident the Millard facility experienced a loss of power that lasted more than seven hours. The key lessons learned from our investigation – examined in our report and in this video - can help facilities prevent a similar accident from occurring due to hydraulic shock.” The video is based on the CSB’s recent safety bulletin entitled "Key Lessons for Preventing Hydraulic Shock in Industrial Refrigeration Systems."Ĭhairperson Rafael Moure-Eraso said, “The CSB’s new safety video is a valuable tool intended for use at the large number of facilities that utilize anhydrous ammonia. The newly released seven-minute safety video, entitled “Shock to the System,” includes a detailed 3D animation of the events that led up the resulting ammonia release. The accident resulted in over 150 exposures to offsite workers, thirty of which were hospitalized – four in an intensive care unit. Washington, D.C, Ma– Today the US Chemical Safety Board (CSB) released its latest safety video detailing key lessons from the release of 32,000 pounds of anhydrous ammonia that occurred at Millard Refrigerated Services Inc. ![]() Latest Safety Video Includes Detailed Animation of 32,000- Pound Release of Ammonia in Alabama which Led to Offsite Injuries Including Multiple Hospitalizations in 2010 CSB Process Safety Training Application.Drivers of Critical Chemical Safety Change. ![]()
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