The Digboi Refinery in North Eastern India is India's oldest refinery and was commissioned in 1901. Originally a part of Assam Oil Company, it became part of IndianOil in 1981. Its original refining capacity had been 0.5 MMTPA since 1901. After modernisation the capacity of the refinery has been enhanced to to 0.62 MMTPA. The Digboi refinery produces distillates, heavy ends and excellent quality wax from indigenous crude oil produced at the Assam oil fields. The refinery presently produces MS and HSD complying BS-III grade.

The Digboi Refinery processed 0.66 million tonnes of crude oil during the year 2013 as against 0.62 million tonnes of crude oil processed last year.

Petroleum products are supplied mainly to north-eastern India primarily through road and by rail wagons. A new Delayed Coking Unit was commissioned in 1999. A new Solvent De-waxing Unit for maximizing production of micro-crystalline wax was installed and commissioned in 2003. The refinery has also commissioned a Hydrotreater and Hydrogen Plant in 2003 to improve the quality of diesel. The MSQ Upgradation project has been mechanically completed and expected to be commissioned by October’10. A new terminal with state of the art facility is under construction and expected to be completed by end 2011.

The refinery is ISO-9001,ISO-14001 and OHSAS accredited, its laboratory is NABL accredited and follows TPM.
Updated on September 17, 2010
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