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- W2069593962 abstract "Abstract TECHNIGAZ and TOTAL C.F.P. have developed a new LPG storage technology derived from the membrane concept used for LNG storage and transportation. This technology called GMS uses a composite membrane as primary barrier. A 2 000 m3 storage pilot unit, based on that concept, is under construction in TOTAL's refinery at DUNKIRK (France) since September 1983. Introduction Past experience has shown that operators should always bear two points of major concern in mind when implementing refrigerated large capacity storage tanks–safety–ease of operation and maintenance. With these points in view a new LPG storage technology has been developed called GMS (Gas Membrane System), derived from the membrane concept used for LNG storage and shipping which uses a corrugated stainless steel membrane. This membrane technology has been used without problems for twenty years in LNG carriers. Besides two problems for twenty years in LNG carriers. Besides two LNG TECHNIGAZ membrane tanks of 120 000 m are presently in operation in France, in Japan, one tank of presently in operation in France, in Japan, one tank of 95 000 m3 is in operation, one tank of 130 000 m3 is under construction and three tanks of 60 000 m3 are under design ; three 100 000 m3 tanks are under construction in South Corea. THE GMS CONCEPT GMS consists of the main following elements listed from outside to inside (Fig. 1)–A prestressed concrete shell able to withstand the hydrostatic load and vapour pressure. In case of an accident, the concrete would contain the cold liquid gas.–A load-bearing insulation made of modular panels continuously bounded to each other. The panels are applied on the concrete and maintained by a discontinuous supporting mastic.–A liquid and gas-tight cryogenic membrane, the Triplex liner is bounded on the insulation panels. The Triplex covered by a protective coating is directly in contact with the stored product. The horizontal and vertical joints are built according to Fig. 2 and Fig. 3. Between the Triplex and the concrete walls there is an insulation space which is isolated both from the LPG and from the outer space. In operation, this isolation space is inertized with nitrogen gas. A pipe network is placed in this space to allow LPG detection, inertization and gas freeing. SECURITY Concrete The concrete outer tank provides a high level of safety against–fire–external impact (missiles)–deficiency of the primary barrier. We calculated that an 0.40 m thick prestressed structure under full load could withstand a gas fire for 4 hours without any additional protection, such as paint or water deluge. The heat propagation in the structure is given in Fig. 4. The behaviour of concrete when hit by missiles is well known. It is possible with prestressed concrete to satisfy virtually any operator's requirements concerning external impacts. For example some concrete tanks have been designed and built to withstand the impact of a small airplane (Fokker 27). P. 399" @default.
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- W2069593962 date "1985-03-11" @default.
- W2069593962 modified "2023-09-27" @default.
- W2069593962 title "Conception and Construction of an LPG Tank Using a Composite Membrane Technology" @default.
- W2069593962 doi "https://doi.org/10.2118/13730-ms" @default.
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