An ammonia gas leak on a 178-foot vessel near Fisherman’s Terminal led to an evacuation of everyone within 500 feet of it Thursday, according to the Seattle Fire Department.
A repair crew for a fish-processing boat punctured a 1-1/4-inch hole in gas line at around 4:30 p.m. at 1500 W. Thurman St., sending the ammonia spilling into a confined space on the ship called the blasting freezer, according to SFD spokesman Kyle Moore.
One crew member was physically affected by the spill but declined treatment, he said.
Because the puncture in the gas line was so hard to reach, the SFD hazardous materials team is waiting for the remaining ammonia gas to leak out of its tank instead of immediately sealing it, Moore said. SFD’s Technical Rescue Team will try to cut off the leak when ammonia air levels decrease, he said.