PRESSURE TEST, then LEAK TEST piping BEFORE the introduction of the Hazardous Material!
At 8:30 p.m. on May 11, 2017, two employees had been welding a pipe assembly and installed it on a chlorine tank. Employee #1 opened a valve to transfer the liquid chlorine from a supply tank into the weigh tank. A flanged fitting was not tightened and both employees were sprayed with liquid chlorine. Both employees also inhaled some chlorine fumes. Both employees were transported to the hospital and Employee #1 stayed overnight for observation. Employee #2 was also transported to the hospital but released after examination.