Pakistan Refinery Limited (PRL) will remain shut from Tuesday (today) for 35 to 38 days due to maintenance and inspection turnaround, the company said on Monday in a stock filing. Last week, PRL announced doubling its crude oil refining capacity from 50,000 barrels per day (bpd) to 100,000 bpd aimed at eliminating the production of high sulphur fuel oil (HSFO) and maximising the production of p