A study on the sloshing risk reduction in membrane-type LNG tanks by interchanging Liquid Cargo between tanks

Makoto Arai, Masaru Matsuo

Abstract

Floating Liquefied Natural Gas Production, Storage and Offloading Unit (FLNG) and Floating Storage and Regasification Unit (FSRU) have appeared in the offshore LNG chain recently. Large scale membrane tanks are expected to be used in some such facilities; however, special attention should be paid to half-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 half-load condition as much as possible. In this study, the operation was optimized using a genetic algorithm. 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 is achieved.

Original languageEnglish
Title of host publicationProceedings of the International Offshore and Polar Engineering Conference
PublisherInternational Society of Offshore and Polar Engineers
Pages898-904
Number of pages7
Volume2015-January
ISBN (Print)9781880653890
StatePublished - 2015
Event25th International Ocean and Polar Engineering Conference, ISOPE 2015 - Kona, Big Island, United States

Other

Other25th International Ocean and Polar Engineering Conference, ISOPE 2015
CountryUnited States
CityKona, Big Island
Period15/6/2115/6/26

Fingerprint

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

Keywords

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

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Mechanical Engineering
  • Ocean Engineering

Cite this

Arai, M., & Matsuo, M. (2015). A study on the sloshing risk reduction in membrane-type LNG tanks by interchanging Liquid Cargo between tanks. In Proceedings of the International Offshore and Polar Engineering Conference. (Vol. 2015-January, pp. 898-904). International Society of Offshore and Polar Engineers.

A study on the sloshing risk reduction in membrane-type LNG tanks by interchanging Liquid Cargo between tanks. / Arai, Makoto; Matsuo, Masaru.

Proceedings of the International Offshore and Polar Engineering Conference. Vol. 2015-January International Society of Offshore and Polar Engineers, 2015. p. 898-904.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Arai, M & Matsuo, M 2015, A study on the sloshing risk reduction in membrane-type LNG tanks by interchanging Liquid Cargo between tanks. in Proceedings of the International Offshore and Polar Engineering Conference. vol. 2015-January, International Society of Offshore and Polar Engineers, pp. 898-904, 25th International Ocean and Polar Engineering Conference, ISOPE 2015, Kona, Big Island, United States, 21-26 June.
Arai M, Matsuo M. A study on the sloshing risk reduction in membrane-type LNG tanks by interchanging Liquid Cargo between tanks. In Proceedings of the International Offshore and Polar Engineering Conference. Vol. 2015-January. International Society of Offshore and Polar Engineers. 2015. p. 898-904.

Arai, Makoto; Matsuo, Masaru / A study on the sloshing risk reduction in membrane-type LNG tanks by interchanging Liquid Cargo between tanks.

Proceedings of the International Offshore and Polar Engineering Conference. Vol. 2015-January International Society of Offshore and Polar Engineers, 2015. p. 898-904.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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