Government refiner Hindustan Petroleum Corp aims to operate its fire-hit Vizag refinery at full capacity from the first week of February.  HPCL had partly shut its 1,66,000-barrel-per-day Vizag refiner in August after a fire in the cooling tower.    Presently, the refinery is operating at 70 per cent capacity. By December, it should reach 85 per cent and should operate at full capacity from the first week of February, the company stated recently.    In western Maharashtra, HPCL also operates a 130,000 bpd plant. It has a stake in the 1,80,000 bpd Bathinda refinery in northern India, which is operated by Hindustan-Mittal Energy Ltd, part-owned by LN Mittal.