Risavika Liquefaction Plant
Overview
The Risavika Liquefaction Plant (“RLP”) is a mid-scale natural gas and biogas liquefaction facility located in Risavika harbour, Southern Norway. The plant was commissioned in 2010 and is equipped with a full suite of state-of-the-art production, storage and loading facilities. RLP has an annual nameplate production capacity of 300,000 metric tonnes of Liquefied Natural Gas (“LNG”) / Liquefied Biogas (“LBG”), corresponding to the energy needs of two cities the size of Stavanger.
The plant has been designed with future expansion in mind; land and infrastructure exists for the development of a second liquefaction train which could potentially double the capacity of the plant.
RLP plays a critical role in enabling a lower carbon footprint for the Nordic industrial and road transportation market as well as the maritime segment across Northwest Europe.
Due to Norwegian hydro electricity production, RLP operates predominantly on electricity produced from renewable sources.
What is Liquified Natural Gas ("LNG")?
LNG is natural gas cooled to about -163°C. Cooling causes the gas to condense and transform from gas to liquid, which means that the volume of the gas is reduced by about 600 times.
LNG is odorless, colorless, and has a specific gravity below half that of water (0.45). Gas in liquid form can be transported in a tanker / container or specially built ships. Production of LNG makes it possible for new geographical markets, which do not have access to gas through pipeline systems, to use natural gas.
Kontinentalveien 36
N-4056 Tananger
Benefits of liquefaction at RLP
NSMP's commitment to the operation and ongoing development of RLP not only offers customers a flexible liquefaction service, but can also deliver the following significant benefits:
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Independence
With NSMP's business being focused on midstream infrastructure, RLP's primary business is liquifying third-party gas and delivering the same high quality and flexible service for all our customers.
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Connection to Abundant Feed Gas Supply
RLP is connected to the Kårstø Gas Processing Plant (“Kårstø”) which provides feed gas to the plant. Kårstø is the largest gas processing plant in Europe, located in Northern Rogaland and is connected to RLP via the Rogass pipeline.
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Liquefied BioGas ("LBG")
Due to the connection of RLP to Kårstø, the European gas grid and grid-connected biogas producers, liquefied gas produced by RLP has the ability to be certified as LBG in accordance with the International Sustainability and Carbon Certification ("ISCC") standards.
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Flexibility
RLP has been set up to optimise its service to match the dynamic requirements of our customers, providing flexible storage solutions and multi-modal offtake options.
Plant Capability
The Risavika Liquefaction Plant consists of a single gas treatment and liquefaction train, LNG storage tank, LNG vessel loading jetty, road tanker filling station and a third-party ferry bunkering jetty. The designed capacity of the plant is 900 metric tonnes of LNG per day.
At RLP the natural gas is cooled, liquefied and subcooled in a heat exchanger by a single mixed refrigerant cycle. This cycle provides cold temperatures by Joule-Thomson expansion and liquid vaporisation of the mixed refrigerant within the shell of heat exchanger. The refrigerant cycle is recompressed in an electric motor driven turbo compressor. The LNG is stored in the storage tank (28,000 m3) at atmospheric pressure.
For vessel loading the LNG is pumped to vessels with one of 2 x 100% vessel loading pumps, each with a capacity of 1,000 m3/h. The loading rate is normally within 150-1,000 m3/h depending on the size of the LNG vessel.
During road tanker loading the LNG is pumped to the LNG road tanker loading station with simultaneous use of 2 x 50% LNG road tanker loading pumps, each with a max. capacity of 65 m3/h.
The road tanker loading station is designed to load 10 LNG trucks with a capacity of 50-58 m3 within 12 hours (daylight) every day of the year.
Third-Party Access
Requests for Service
NSMP welcomes enquiries for purchasing liquefaction capacity at the Risavika Liquefaction Plant, any incoming enquiries will receive swift and focused attention. With NSMP's midstream focus, we offer the same high quality and flexible service for all our customers.
RLP is located in Risavika harbour in Southern Norway, which is a highly attractive location with excellent, flexible logistics and extensive feed gas availability due to its connection to the Kårstø Processing Plant.
RLP provides customers with multi-modal offtake options including and on-site vessel loading jetty and road tanker loading facilities. Due to RLP's physical pipeline connections to the European gas grid and grid-connected biogas producers, RLP is capable of delivering certified Liquefied BioGas ("LBG") to its customers, differentiating the plant as a significant source of LBG to the Northern Eurpoean markets.
Enquiries for third party access to liquefaction capacity should be made to the Commercial and Business Development Director.
Compliance
For information to the Risavika Liquefaction Plant's disclosure obligations, please click here.
Feed Gas Specification
Feed Gas is supplied via Gassled Area D Exit Point D9 (Rogass)
| Designation | Unit | Specification |
| Hydrocarbon Dewpoint | (°C at 1 – 69 barg) | <-3 |
| Maximum water dew point | (°C at 69 barg) | -12 |
| Maximum carbon dioxide | (mole %) | 2.50 |
| Maximum oxygen | (ppm vol) | 2 |
| Maximum H2S incl. COS | (ppm vol) | 2 |
| Maximum mercaptans | (mg/Nm3) | 6.0 |
| Maximum sulphur | (mg/Nm3) | 30 |
| Gross Calorific Value | (MJ/Sm3) | 38.1 - 43.7 |
| (MJ/Nm3) | 40.2 - 46.0 | |
| (kWh/Nm3) | 11.17 - 12.78 | |
| Wobbe Index | (MJ/Sm3) | 48.3 - 52.8 |
| (MJ/Nm3) | 51.0 - 55.7 | |
| (kWh/Nm3) | 14.17 - 15.47 | |
| Incomplete Combustion Factor (ICF) | N/A | ≤ 0.48 |
| Soot Index (SI) | N/A | ≤ 0.60 |
Redelivery Specification
Reference standards based on ISO 6976 for calorific values combustion 15°C metering 0°C.
| Designation | Unit | Specification | |
| Gross calorific value | Min. | MJ/Nm3 | 38.99 |
| Max. | MJ/Nm3 | 47.00 | |
| Net calorific value | Min. | MJ/Nm3 | 35.18 |
| Max. | MJ/Nm3 | 42.9 | |
| Wobbe Index (GCV) | Min. | MJ/Nm3 | 49.9 |
| Max. | MJ/Nm3 | 58.3 | |
| LNG Density at atmospheric equilibrium pressure | Min. | kg/m3 | 420 |
| Max. | kg/m3 | 480 | |
| Methane | Min. | (mole %) | 80 |
| Ethane | Max. | (mole %) | 9 |
| Propane | Max. | (mole %) | 3 |
| n-Butane + i-Butane | Max. | (mole %) | 1 |
| n-Pentane + i-Pentane | Max. | (mole %) | 0.2 |
| Hexane | Max. | (mole %) | 0.1 |
| Nitrogen | Max. | (mole %) | 1.2 |
| Carbon Dioxide | Max. | (mole %) | 0.01 |
| Methane number | Typical | DGC Method | 77-93 |
| Min. | DGC Method | 75 | |
| Total Sulphur | Max. | mg/Nm3 | 30 |