Kim, Su Kyeong;
Park, Sung-In;
Paik, Jeom Kee;
(2022)
Collision-accidental limit states-based safety studies for a LNG-fuelled containership.
Ocean Engineering
, 257
, Article 111571. 10.1016/j.oceaneng.2022.111571.
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Abstract
Liquefied natural gas (LNG) is an increasingly popular fuel alternative of ships for reducing greenhouse gas emissions. The interest in LNG fuel propulsion systems is rapidly growing, yet certain important safety design and engineering issues remain poorly constrained. The safety of LNG-fuelled ships must be assessed in terms of the potential structural damage owing to collision accidents and resulting LNG spills, especially for ship types that store the LNG storage tank within the cargo hold. In this paper, accidental limit state (ALS) based safety assessment for LNG-fuelled containership structures using nonlinear finite element methods is studied at the most unfavourable scenario of collisions between a striking ship's bow and a struck ship's LNG fuel tank, where the struck ship is in full load condition at a standstill, while the striking ship of the same size as the struck ship has different loading conditions in the ballast load condition, 50% partial load condition and full load condition, with varying collision speed at 0.5, 3, 6 and 9 knots. A hypothetical 9,000 TEU (Twenty-foot Equivalent Unit) LNG-fuelled containership was designed in accordance with the requirements for the international gas fuel transport standards, accommodating a membrane-type LNG fuel tank located amidship. It is found from the present study that inner side hull structures of the struck ship can be damaged in ship-ship collisions, and the current industrial guidelines for LNG fuel tank designs are required to amend to apply for LNG-fuelled ships.
| Type: | Article |
|---|---|
| Title: | Collision-accidental limit states-based safety studies for a LNG-fuelled containership |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.oceaneng.2022.111571 |
| Publisher version: | https://doi.org/10.1016/j.oceaneng.2022.111571 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | LNG-Fuelled containership, Collision-accidental limit states, Safety design and engineering, Structural crashworthiness analysis, Collision between a striking ship's bow and a struck ship's LNG fuel tank |
| UCL classification: | UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering UCL > Provost and Vice Provost Offices > UCL BEAMS UCL |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10150124 |
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