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_: Attock Refinery Limited (ARL) is the pioneer and pacesetter of Pakistan's petroleum refining industry. Set up in 1922, the Refinery consisted of two small stills of 2,500 barrel per day (bpd). It was expanded in late thirties and early forties to a total capacity of 10,000 bpd. In 1981 addition of two distillation units enhanced the Refinery's capacity to 35,000 bpd. In 1999 it was further up-graded with the addition of a Heavy Crude Unit, a Reformer unit and a Captive Power Plant with the capability to process from the lightest to the heaviest (10 - 65 API) crudes increasing the capacity of the refinery to 43,000 BPD.
In November 2016, ARL completed a major expansion and up-gradation project comprising Diesel Hydrodesulphurization (DHDS) Unit (to reduce sulphur contents in High Speed Diesel to meet Euro II specifications), Preflash Unit (to enhance refining...