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Etude et application de l'acier au nickel à 36 % avec un très faible coefficient de dilatation thermique linéaire, destinées aux installations de GNL.

Study and application for LNG facilities of 36%-Ni steel with a very small coefficient of linear thermal expansion.

Auteurs : UCHINO S., ENUMA K., ARAI S., et al.

Résumé

A 36%-Ni steel, which is generally called "Invar", is the ideal material for a 20% cost reduction in construction of LNG piping as compared to LNG piping made with 18-8 stainless steel (SS304). This is because there is no need for loops and because the diameter of the LNG piping is smaller, providing a reduction of the pressure loss in long and large diameter piping. The reason for these is that the coefficient of linear thermal expansion of 36%-Ni steel is very low; only about 1/10 of the coefficient of 18-8 stainless steel. This sophisticated technology has been proven to be problem-free when applied to the construction and operation of a 32-inch LNG unloading line and a 16-inch LNG send-out line at the Ohgishima LNG receiving terminal operated by Tokyo Gas. The conclusion is that 36%-Ni steel should replace 18-8 stainless steel as a new material for LNG facilities.

Détails

  • Titre original : Study and application for LNG facilities of 36%-Ni steel with a very small coefficient of linear thermal expansion.
  • Identifiant de la fiche : 2007-1866
  • Langues : Anglais
  • Source : LNG 14. Proceedings of the 14th international conference and exhibition of liquefied natural gas [CD-ROM].
  • Date d'édition : 21/03/2004

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