WORKERS INJURED IN TANK EXPLOSIONS
DESCRIPTION OF INCIDENT: In both instances, the manway doors were being removed to complete required tank maintenance and repairs. Site hazard assessments were completed by the supervisors in charge of the activity and identified the potential for an explosive atmosphere as one of the hazards. While opening the manway door, the workers removed the top half of a 2-part manway door and set it to the side. While workers were removing the bottom half of the door, the electric impact wrench they were using ignited the hydrocarbon fumes that were coming from inside the tank. The workers injured in these …