There is no flaring at the LNG plant during ordinary operations. Flaring is required during brief periods only during interruptions to production.
This is possible as the decoction going to the LNG tank is led into the Lyse gas grid rather than being flared. When maintenance work takes place at the plant or if production is interrupted for other reasons, flaring will take place at the plant. Every summer, there are normally two weeks of operational shut-down due to the annual maintenance work. This results in periods with flaring.
There are strict requirements relating to noise from the plant. At night time, the noise level shall not exceed 40dB at homes and holiday homes in the vicinity. An ordinary conversation for example, measures about 65dB.
In cooperation with Sola Municipality, the enterprises in Risavika have prepared a plan for monitoring the noise level in the area. Five measuring stations have been placed at strategic points in cooperation with involved businesses in Risavika and a noise consultancy firm. The sound monitoring is administered by Stavangerregionen Havnedrift AS. You will find more information about the project and data on the Stavanger Harbour website.
Skangas LNG Production AS keeps track of the noise measurements. When measurements indicate that something is worth further investigation, we have access to detailed noise data and are therefore able to analyse the situation. This also applies if we receive complaints relating to excessive noise.
Emissions to air
Our main emissions are in the form of carbon dioxide (CO2) and nitrogen oxide (NOx). This takes place mainly from the flare or from a combustion furnace inside the plant.
A substantial part of the CO2 emissions is caused by CO2 that is separated from gas arriving at the plant. Official figures for annual emissions from the plant are available at the website Norwegian emissions.
CO2 surrounds us in a natural circuit. In modern times emissions from fossil fuels have increased sharply. The increased level of CO2 in the atmosphere leads to climate challenges.
Viewed as a whole, use of LNG from the plant represents a considerable reduction of global emissions of greenhouse gases. This is possible when LNG replaces other fossil fuels with higher emissions of greenhouse gases. Natural gas is the purest of the fossil energy sources we know of. When used in industrial enterprises or in ships, LNG, as a replacement for other fossil fuels, represents a significant reduction of CO2 emissions. Furthermore, our customers achieve a more energy efficient operation.
Enterprises transferring from oil to gas also achieve up to a 50% reduction in emissions of Nox, sulphur dioxide and particles.
The target of Rogaland County Administration has set a target to reduce the county’s annual emissions of CO2 by 600 000 tonnes by the year 2020. As a comparison, using LNG from the Risavika plant alone represents a reduction of 200 000 tonnes of CO2.
Discharges to sea
There are no significant discharges to the sea from the plant.