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Environmental activities: refining and marketing

The refinery experienced two onshore discharges above 160 liters in 2015. An exceedance of our discharge permit to sea in regards to concentrations of oil and ammonia and oil. The deviations have been reported to the authorities. Other emissions to air and discharges to sea were within the permit limits. Relevant emission figures and environmental focus areas for the refinery are further described in the annual status report “Miljø og samfunnsansvar” (in Norwegian).

International comparisons show that the ExxonMobil refinery at Slagentangen is one of the most energy efficient refineries in the world. Since the early 1990s, the refinery has implemented internal measures to save energy, and the use of energy today is 25 per cent more efficient than it was in 1990. The reason why CO2 emissions nevertheless have increased during this time period is mainly due to new environmental requirements to products e.g. increased desulphurization. Furthermore, the refinery has increased its processing capacity for crude oil. The refinery at Slagentangen has low emissions of CO2 compared to other refineries’ emissions in Europe.

Delivering environmental diesel

The refinery delivers ”eco-diesel” in all qualities, including almost sulphur free ”eco-diesel” with less than 0.001 percent sulphur content. In 2007, the refinery started production of biodiesel by blending of a 5% bio-component into the diesel production.

Environmental control

SFT control

SFT regularly performs inspections of the refinery. Over the last years controls have been performed related to a new release permit and report of CO2 emissions. No deviations have been reported in connections with this, but there have been some notifications and observations which the refinery has followed up.

Inspection and rehabilitation of pipe systems on quay and tank park

A comprehensive work program including risk assessment, inspection and rehabilitation of the pipe systems has been ongoing since 2001. The cost of the program is estimated at more than NOK 75 million.

Energy and climate gases

International comparisons show that the ExxonMobil refinery at Slagentangen is one of the refineries with the most efficient energy use in the world. Since the beginning of the nineties, the refinery has implemented internal measures to save energy, and the use of energy is about 25% more efficient today compared with 1990. The fact that the CO2 emissions still have increased in this period, is mainly due to the new environmental demands to products, i.a. increased desulphurization.

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