Respondent’s facility is a frozen food processing facility which primarily produces frozen dinners and entrees. As part of this process, Respondent uses ammonia in its plate freezers. On May 2, 2016 at approximately 2:35 p.m., a change in position of the stacking trays or plates located in Plate Freezer 1-6 caused the routine horizontality a1mm to sound indicating that the plates were askew and out of acceptable specification for operation. Maintenance personnel visually inspected the system components and performed activities consistent with the standard operating procedure to reset the trays. However, the horizontality a1mm was not fixed by following the standard operating procedure and the machine was not returned to normal operation. Personnel observed all equipment components in place and observed some oil seepage around a hydraulic cylinder. At 3:45 p.m., Respondent’s employee detected an ammonia odor. Between 2:35 and 3:45 p.m., the weight of the plates and the frame shifted, placing undue stress on the hydraulic equipment mountings. The significant weight load on the hydraulic components caused the bolts securing the equipment to sheer off and fail. As a result, this pulled unduly on the refrigeration hoses, containing ammonia, to loosen and rupture.