It took about 50 firefighters three hours to bring a major gas fire under control at a Sydney service station. Several 200kg LPG cylinders were alight at the servo about 6.30pm on September 20 at Fairfield, in the city's south-west. Fire crews were confronted by a "huge, intense fire" that was threatening to spread to nearby homes, according to a NSW Fire and Rescue spokesperson. "Fifteen residents rushed to safety as fire crews cooled the venting gas cylinders," the spokesperson said. "Fire crews gained control of the blaze after three hours, saving the neighbouring homes and preventing the flames spreading to the service station's fuel tanks." Specialist firefighters remained on the scene to disperse residual gas from the cylinders after the blaze was controlled. IN OTHER NEWS: The cause of the fire will now be investigated by the Fire Investigation and Research Unit, joined by police forensics officers. It was a busy night for firefighters who also battled a factory fire in the nearby suburb of Smithfield.