|
|
LNG Tanks Tongyeong, South Korea
|
|
|
|
|
|
|
South Korea is one of the world’s fastest growing economies. Due to a lack of natural energy resources, South Korea is obliged to import 80% of their total energy supply, whereby petrol is presently the most used resource. In order to decrease the dependence on oil and to improve the country’s percentage of environmentally clean energy, the government fosters the use of natural gas.
Natural gas is one of the safest and most economical energy sources. It is transported and stored from overseas in liquefied state as the volume of LNG (= Liquefied Natural Gas) is approx. 600 times smaller than the gaseous state. To liquefy natural gas a temperature of below -161 °C is necessary.
Within the receiving terminals, one of them being located in Tongyeong on Korea’s south coast, LNG tanks are used for temporary storage of the LNG prior to its re-gasification. Due to governmental regulations concerning safety standards, the tanks have to be built with the latest available technology. State-of-the-art is the full containment system with an outer prestressed concrete tank with concrete roof and an inner 9%-NI steel tank.
The capacity for storage of LNG at Tongyeong has been greatly enlarged within the last couple of years. Originally there were two LNG tanks. Since April 2000, eight tanks have been added to the receiving terminal. As demand remains high even more storage was necessary.
Hence, in early 2006 construction works for tanks nos. 11 and 12 started. Shortly afterwards, in 2007, works for tanks nos. 13 and 14 were implemented. And in June 2008, another two tanks, nos. 15 and 16, went into realisation.
Since Tank 3 all tanks have been prestressed with the DYWIDAG prestressing system. DYWIDAG International GmbH supplied the prestressing material and executed the prestressing works. Furthermore, DYWIDAG International furnished the design and engineering for some of these LNG tanks, too. Tanks 3 - 12 at Tongyeong have a capacity of 140,000 m³. The new tanks nos. 13 and 14 have already been constructed with the currently largest LNG tank capacity of 200,000 m³.
The contract for the prestressing works for Tanks 15 and 16 has again been awarded to DYWIDAG International, also having a capacity of 200,000 m³ each.
>> Back
|
|
|
|
|
|
|
|
|
