HOUSTON No injuries were reported due to a gas leak at a Texas City, Texas, refinery that forced the evacuation of nearby homes on Saturday, a city official said.
Production at Marathon Petroleum Corp's 76,000 barrel per day (bpd) refinery, located about 50 miles south of Houston, was unaffected by the leak, said Marathon spokesman Robert Calmus.
Residents from 12 homes were allowed to return at about 10 a.m. local time (1600 GMT) after the leak of isobutane vapor was stopped, said Bruce Clawson, Texas City emergency management director.
"It was a small evacuation," he said.
A flange at the refinery was the cause of the leak, Calmus said. The leak was secured at about 9 a.m.
The Marathon refinery sits across the street from BP Plc's giant Texas City refining and chemical plant complex, where an explosion killed 15 workers in 2005.
Isobutane can cause asphyxiation and heart problems in high enough concentrations.
Isobutane is used to make gasoline blending components that boost octane in the motor fuel.
(Reporting by Erwin Seba; Editing by Eric Beech)