Abstract: At 8:25 a.m. on June 25, 2021, Employee #1 was tightening a loose clamp near a valve drain outlet during a clean-in-place operation. The valve unexpectedly opened, releasing hot caustic cleaning solution-Diversey Divostar Protect-at approximately 180°F near the employee's feet. He slipped and fell into the liquid, which splashed onto his face and eyes. The hot solution also contacted his legs and hands. Employee #1 sustained chemical burns to his legs, face, and eyes. He was hospitalized for treatment. The incident was attributed to improper placement of the valve drain and the inability to determine cycle completion prior to entering the work area.