Abstract: At 10:30 a.m. on April 1, 2013, Employee #1 was pressure testing the Blow-out Preventer (BOPE) prior to setting the BOPE on the wellhead. The employee used a test stump and an autoclave connector. The autoclave connector was positioned into a single 0.8125 inch fitting at the test stump. The pressure pump was raised to 10,000 pounds and held. It unexpectedly released, just as the employee walked in the line of fire. Employee #1 was struck by the autoclave connector and 10,000 pounds of water pressure from the unexpected release of the test stump fitting. Employee #1 sustained injuries to the center chest area and a puncture wound to the lower left side of the armpit area, killing him.