(Photo source:cri.cn)

LANZHOU, Aug. 4 -- A fire at a PetroChina oil refinery in Lanzhou, capital of northwest China's Gansu Province, has been contained without casualties.

The Lanzhou petrochemical subsidiary of PetroChina said the fire, triggered by a leakage from a fractional distillation device in the refinery at 8:39 a.m. Monday morning, was brought under control after the propylene source was cut off.

The municipal environmental department said they have not detected air or water contamination from the fire.

The refinery's distillation device has a capacity of producing 300,000 tonnes annually.