LNG Carrier Structural Block Integration for FLNG Conversion
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Solution Overview
Problem
Existing LNG carriers face limitations in storage and deck space capacity, making them less suitable for conversion into FLNG or FSRU facilities, and lack the necessary facilities for LNG processing, putting them at a competitive disadvantage compared to newer generation carriers.
Innovation Solution
A prefabricated structural block is integrated into existing LNG carriers, incorporating additional LNG storage tanks and processing facilities like regasification or liquefaction plants, allowing for increased capacity and functionality, which can be assembled separately and integrated into the vessel without disrupting its operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If existing LNG carriers are optimized for maximum storage and transportation efficiency, then storage capacity is improved, but deck space for additional gas processing facilities becomes limited
Solution Approach 1:
The patent extends the vessel horizontally by integrating a prefabricated structural block to create an extended module configuration. This dimensional extension adds both storage capacity and deck space simultaneously, resolving the contradiction between maximizing storage and maintaining processing facility space.
2Adaptability or versatility
If existing LNG carriers are converted into FLNG or FSRU facilities, then versatility is improved, but storage space for additional facilities becomes limited
Solution Approach 1:
The patent divides the vessel into modular sections including forward section, aft section, and intermediate structural blocks. This segmentation allows flexible configuration where processing facilities can be placed in the intermediate block while maintaining storage capacity in the original tank sections, enabling conversion to FLNG/FSRU while preserving storage volume.
3Duration of action of stationary object
If older generation LNG carriers with smaller capacity continue to function for LNG transportation, then operational continuity is improved, but competitive disadvantage increases compared to newer generation carriers
Solution Approach 1:
The patent transforms older carriers into multi-functional units by integrating processing facilities (regasification, liquefaction) into the extended module. This allows the vessel to perform both transportation and processing functions, maintaining operational relevance and competitiveness despite older generation design limitations.
4Adaptability or versatility
If a prefabricated structural block is integrated with existing LNG carriers, then storage and processing capabilities are enhanced, but vessel complexity increases
Solution Approach 1:
The patent employs prefabricated structural blocks that are pre-assembled with processing facilities and storage tanks before integration with the main vessel. This preliminary preparation reduces on-site construction complexity and makes the integration process more manageable despite the increased overall system complexity.
Data Source
AI summary
A structural block is fabricated with necessary components and structure for LNG storage and/or process. The structural block may be an LNG tank with the same configuration as that in an LNG carrier. The structural block may also be a regasification plant or a liquefaction plant to be used for LNG process. An existing vessel, e.g. an LNG carrier, is cut apart to form a forward section and an aft section. The forward section and the aft section are moved away from each other to form a space therebetween. The structural block is then placed into the space and jointed to the forward and aft sections, by welding for example, to form an integrated new vessel. The structural block provides the new vessel with increased LNG storage and transportation capabilities as well as regasification and/or liquefaction process facilities to meet the increased demand for LNG storage, transportation and processing.