Abstract

The Floating Liquefied Natural Gas (FLNG) Production, Storage, and Offloading Unit and the Floating Storage and Regasification Unit (FSRU) have appeared in the offshore liquefied natural gas (LNG) chain recently. Large-scale membrane tanks are expected to be used in some such facilities; however, special attention should be paid to partial loading in the membrane tanks because of the risk of sloshing. A distribution control method by which LNG is distributed and interchanged between the tanks to reduce the sloshing risk was proposed by Yokohama National University. In this operation, the sloshing risk is reduced by shortening the period spent in the partially-filled condition as much as possible. In this study, the operation was optimized through the use of a genetic algorithm (GA). Several cases involving different charging operations were examined, and the flexibility of this method was demonstrated. It was shown that a considerable decrease of the sloshing risk was achieved.

Original languageEnglish
Pages (from-to)139-145
Number of pages7
JournalInternational Journal of Offshore and Polar Engineering
Volume26
Issue number2
DOIs
StatePublished - 2016 Jun 1

Fingerprint

Liquid sloshing
Membranes
Liquefied natural gas
Floating liquefied natural gas
Genetic algorithms
Liquids

Keywords

  • FLNG
  • FSRU
  • Genetic algorithm
  • Gray codes
  • Membrane tank
  • Risk reduction
  • Sloshing

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Mechanical Engineering
  • Ocean Engineering

Cite this

Sloshing risk reduction in membrane tanks of FLNG by interchanging liquid cargo between tanks. / Arai, Makoto; Matsuo, Masaru.

In: International Journal of Offshore and Polar Engineering, Vol. 26, No. 2, 01.06.2016, p. 139-145.

Research output: Contribution to journalArticle

Arai, Makoto; Matsuo, Masaru / Sloshing risk reduction in membrane tanks of FLNG by interchanging liquid cargo between tanks.

In: International Journal of Offshore and Polar Engineering, Vol. 26, No. 2, 01.06.2016, p. 139-145.

Research output: Contribution to journalArticle

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