Ammonia Kills Worker A simple broken weld seam caused the death of a 68-year-old man, when an anhydrous ammonia tank ruptured. Anhydrous ammonia is a fertilizer, injected into the soil from steel cylinders called nurse tanks. The ammonia is compressed from gas into liquid for transport in cylinders. These are tough tanks, withstanding internal pressures of 250 pounds per square inch (1. 75 MPa. ) The victim and his co-worker were filling tanks with anhydrous ammonia at a refilling station. He had just finished and disconnected the nurse tank, when the tank seam split. Caustic gas exploded outward. He quickly shut off the […]