On May 31, 2012, Employees #1 through #6 were working when an evaporator that had been deactivated was mistakenly activated by a worker. Approximately 68.5 pounds (31 kilograms) of ammonia were released on an overhead catwalk. Employees #1 through #6 inhaled the fumes, and they were transported to a hospital. Employee #1 was not hospitalized, but Employees #2 through #6 were. The narrative did not specify whether the inadvertent release of the ammonia was caused by a coworker or one of the six employees who were injured. Here is a breakdown of the OSHA citations:
NOTE: Rare Emergency Alarm citations using 1910.165, but this was a PSM covered facility.