Development of large-scale precast, prestressed concrete liquefied natural gas storage tanks

Hjorteset, Kåre; Wernli, Markus; LaNier, Michael W.; Hoyle, Kimberly A.; Oliver, William H.
October 2013
PCI Journal;Fall2013, Vol. 58 Issue 4, p40
Academic Journal
The growing use of liquefied natural gas (LNG) has necessitated large (160,000 m3 [5,700,000 ft3]), cryogenic-rated (-165°C [-265°F]) storage tanks. Conventional technology uses primary containment tanks fabricated of 9% nickel steel, which is in limited supply and difficult to weld, and cast-in-place concrete secondary containment tanks. Composite concrete cryogenic tank design incorporates integrated precast, biaxially prestressed concrete tank wall panels for both primary and secondary containment. The wall panels weigh 100 tonnes (220 kip) and are up to 38 m (125 ft) tall. This LNG storage tank is one of the first cryogenic tanks designed to the provisions of ACI 376-10. This paper discusses the unique design and construction challenges encountered in the development of large-scale precast, prestressed concrete cryogenic storage tanks, along with special considerations necessary when fabricating, handling, erecting, temporarily supporting, integrating, and posttensioning the long and slender precast concrete wall panels needed to produce a liquid- and gas-tight structure.


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