WO2015152825A1 - Procédé d'intégration de blocs structurels et de flotteurs latéraux nouvellement construits à un méthanier existant - Google Patents

Procédé d'intégration de blocs structurels et de flotteurs latéraux nouvellement construits à un méthanier existant Download PDF

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Publication number
WO2015152825A1
WO2015152825A1 PCT/SG2015/000110 SG2015000110W WO2015152825A1 WO 2015152825 A1 WO2015152825 A1 WO 2015152825A1 SG 2015000110 W SG2015000110 W SG 2015000110W WO 2015152825 A1 WO2015152825 A1 WO 2015152825A1
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WO
WIPO (PCT)
Prior art keywords
lng carrier
structural block
existing
integrated
tank
Prior art date
Application number
PCT/SG2015/000110
Other languages
English (en)
Inventor
Asokkumar NEDUMARAN
Paik Huat SIM
Original Assignee
Keppel Offshore & Marine Technology Centre Pte Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Keppel Offshore & Marine Technology Centre Pte Ltd filed Critical Keppel Offshore & Marine Technology Centre Pte Ltd
Priority to EP15773243.9A priority Critical patent/EP3131807B1/fr
Priority to BR112015023911A priority patent/BR112015023911A2/pt
Priority to SG11201506240YA priority patent/SG11201506240YA/en
Priority to AU2015210487A priority patent/AU2015210487B2/en
Publication of WO2015152825A1 publication Critical patent/WO2015152825A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B3/00—Hulls characterised by their structure or component parts
    • B63B3/02—Hulls assembled from prefabricated sub-units
    • B63B3/04—Hulls assembled from prefabricated sub-units with permanently-connected sub-units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B83/00—Rebuilding or retrofitting vessels, e.g. retrofitting ballast water treatment systems
    • B63B83/20—Rebuilding or retrofitting vessels, e.g. retrofitting ballast water treatment systems for conversion to a different use, e.g. for converting tankers into a FPSO-FLNG units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B63B2025/087—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid comprising self-contained tanks installed in the ship structure as separate units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B2035/448—Floating hydrocarbon production vessels, e.g. Floating Production Storage and Offloading vessels [FPSO]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B83/00—Rebuilding or retrofitting vessels, e.g. retrofitting ballast water treatment systems
    • B63B83/10—Rebuilding or retrofitting vessels, e.g. retrofitting ballast water treatment systems for increasing cargo capacity

Definitions

  • the present disclosure relates to an existing Liquefied Natural Gas (LNG) carrier that can be reconstructed or converted through a jumboisation technique by adding a new built structural block which contains a LNG storage tank facility/Liquefied Natural Gas process facility for liquefaction production/regasification modules on deck space.
  • LNG Liquefied Natural Gas
  • additional deck space may be provided by adding one or more new built sponsons on either one or both sides of an existing LNG carrier hull.
  • the existing LNG carrier may be laid up or scrapped if a life extension program for continuous services as a LNG carrier or other purposes is not available.
  • the availability of a life extension program depends on the condition of the LNG carrier.
  • a new lease of life for a floating LNG production/Regasification facility onboard is provided as an added asset to the existing LNG carrier to further extend the life period of the existing LNG carrier.
  • jumboisation technique is adopted by adding an entire section to the ship or crude oil tanker, cruise vessel or bulk carrier.
  • crude oil tanker vessels may be converted to Floating Production Storage and Offloading (FPSO) units, which are utilized by many operators around the world since there are markets for this kind of conversions.
  • FPSO Floating Production Storage and Offloading
  • the existing LNG carriers may also be converted into offshore or near shore gas process production/ regasification facilities for smaller gas process facilities.
  • a method for constructing an FLNG, FSRU or a LNG carrier comprising: separating a first existing LNG carrier to form a forward section and an aft section; fabricating a structural block prior to separating the first existing LNG carrier, the structural block includes a gas process facility, the gas process facility includes a regasification plant or a liquefaction plant; (c) placing a structural block into a space between the forward section and the aft section, the structural block having a front end and a rear end; (d) joining the forward section to the front end of the structural block and joining the aft section to the rear end of the structural block to form a new integrated vessel; and (e) placing at least one sponson on a side of the new integrated vessel.
  • a sponson is placed on each side of the new integrated vessel.
  • each side of the vessel may be the left and right side of the vessel.
  • the structural block and sponson include one or more LNG storage tanks. More preferably, the LNG storage. tank is selected from a group consisting of a MOSS type tank, a Gaztransport & Technigaz (GTT) tank, a self-supporting prismatic type B (SPB) tank, an independent type A tank and an independent type C tank.
  • the LNG storage. tank is selected from a group consisting of a MOSS type tank, a Gaztransport & Technigaz (GTT) tank, a self-supporting prismatic type B (SPB) tank, an independent type A tank and an independent type C tank.
  • the structural block is fabricated at a first site, the sponsons are fabricated at a second site, and separating the first existing vessel is carried out at a third site, wherein the first, second and third sites are independently operable from each other.
  • the structural block is fabricated at a site while the first existing vessel is absent from the site.
  • the sponsons may be fabricated at a site while the first existing vessel is absent from the site.
  • the structural block is a structure section of a second existing LNG carrier.
  • characteristics of the first existing LNG carrier for fabrication of the structural block are first determined.
  • the method of claim 1 further comprising, prior to separating the first existing LNG carrier, determining characteristics of the first existing LNG carrier for fabrication of the structural block.
  • the sponsons may be the same size or of different sizes depending on the process facilities in them.
  • the sponsons includes a ballast tank.
  • a ballast tank may provide buoyancy.
  • the structural block includes at least one LNG storage tank having a containment system different from that of the first existing LNG carrier.
  • a method for constructing an FLNG, FSRU or a LNG carrier comprising: separating a first existing LNG carrier to form a forward section and an aft section; fabricating a structural block prior to separating the first existing LNG carrier, the structural block includes a gas process facility, the gas process facility includes a regasification plant or a liquefaction plant; joining a structural block with one of the forward section and the aft section to form a new integrated vessel; and placing at least one sponson on each side of the new integrated vessel.
  • the structural block and sponson include one or more LNG storage tanks. More preferably, the LNG storage tank is selected from a group consisting of a MOSS type tank, a Gaztransport & Technigaz (GTT) tank, a self-supporting prismatic type B (SPB) tank, an independent type A tank and an independent type C tank.
  • the LNG storage tank is selected from a group consisting of a MOSS type tank, a Gaztransport & Technigaz (GTT) tank, a self-supporting prismatic type B (SPB) tank, an independent type A tank and an independent type C tank.
  • the structural block is fabricated at a first site, the sponsons are fabricated at a second site, and separating the first existing vessel is carried out at a third site, wherein the first, second and third sites are independently operable from each other.
  • the structural block is fabricated at a site while the first existing vessel is absent from the site.
  • the structural block is a structure section of a second existing LNG carrier.
  • the structural block includes a bow section of a second LNG carrier, the forward section of the first existing LNG carrier is a bow of the first existing LNG carrier, the method comprising jointing the structural block to the aft section of the first LNG carrier to form the new integrated LNG carrier.
  • the structural block further includes a turret built on the bow section.
  • the structural block includes a stern section of a second LNG carrier, the aft section of the first existing LNG carrier is a stern of the first existing LNG carrier, the method comprising jointing the structural block to the forward section of the first LNG carrier to form the new integrated LNG carrier.
  • the method further comprising, prior to separating the first existing LNG carrier, determining characteristics of the first existing LNG carrier for fabrication of the structural block.
  • the object of the present disclosure is hence to provide a service life extension program for an existing LNG carrier to both accommodate additional storage facilities and create more deck space for gas process production/regasification facilities.
  • the present disclosure relates to creating additional LNG storage space and deck space for gas process production/regasification modules, which is achieved by enlarging an existing LNG carrier by jumboisation technique and then by adding newly built sponsons which are proposed to be integrated with the existing LNG carrier to increase the value of the existing LNG carrier without needing to purchase or build an entirely new floater.
  • a newly built structural block is prefabricated with LNG storage space.
  • the structural block may contain at least one LNG storage tank having a containment system which may be same as or different from that of the existing LNG carrier.
  • Most of the existing LNG carriers are either MOSS type containment systems or membrane type containment systems, only few LNG carriers are built using other types of containment system.
  • New additional space created for LNG storage can be either one of the two types of containment system and it depends on the gas process facilities.
  • MOSS type containment system cannot be utilized because of spherical doom and we don't have deck space for gas process production facility.
  • Membrane type tank, IHI SPB tank, Type C pressurized tank and other international approved new containment systems can be utilized for new LNG storage space and deck space for gas process production/regasification facility.
  • Jumboisation technique requires re-engineering and integration of existing storage system to newly added system that offset safe flexibility and functionality asset.
  • An existing LNG carrier is cut apart to form a forward section and an aft section which include existing cryogenic pipelines, electrical cables, bulkhead, stiffeners, longitudinal and transverse beam which need to be reinforced and hook up with new structural block and connect with new pipeline, electrical cables, etc. Necessary steps should be followed while integrating an existing storage system with a new built storage system.
  • the existing LNG carrier and new built storage space, deck space can be utilized for gas process production/regasification facility or machinery space for other uses.
  • a new built sponson(s) is provided to both sides of the integrated ship hull or one side of integrated ship hull. This sponson will provide additional deck space for gas process production/regasification facility, Type C LNG containment system or mechanical deck space for other uses.
  • Different cutting locations on an existing LNG carrier from fwd section until bow section have been proposed in this invention to integrate the existing LNG carrier with a new built LNG storage space and other existing hookup.
  • the existing LNG carrier may be cut at different locations, the size of the sponson(s) also changes accordingly, some places requiring at least one sponson on one side.
  • One side of the sponson can be used as ballast tank for stability of the Integrated LNG carrier.
  • New built structural block fabrication can be done in-house for membrane tank, Keppel holds license to build such tank in Keppel yard. If new built structural block uses IHI (Ishikawajima-Harima Heavy Industries Prismatic IMO type B LNG tanks) SPB (self-supporting prismatic type B) tank then it will be fabricated in IHI yard, after completion of the complete structural block, it will be deployed to Keppel yard for integrating with the existing LNG carrier. During fabrication of the new built structural block, the existing LNG carrier does not need to be present at yard. This will allow the existing LNG carriers to continue to operate as LNG transportation vessel during the fabrication period of the new structural block. New built structural block may be fabricated based on optimized working schedule, construction sequence and coordination with the existing LNG carrier work process.
  • the existing LNG carrier Upon near completion of the new structural block, the existing LNG carrier will be dry-docked for cutting of the hull for vessel assembly.
  • the existing hull When the existing hull is separated into a forward and an aft section, either one or both sections are moved away from each other to form a space between them.
  • the new structural block is then placed into the created space and joined to the forward and aft sections, by welding, to form an integrated storage space to the existing LNG carrier.
  • This new structural block provides the new dimension to the existing LNG carrier by increasing the storage space and deck space for gas process production/regasification facility or other machinery space.
  • Newly built sponsons can serve several purposes based on user's requirements; it can serve as type C LNG storage system, machinery space, deck space for gas process production/regasification facility, ballast tank, etc. Sponsons can be installed on both sides of the ship hull or one side of the ship hull. The new built sponsons may be in different size and shape based on deck space required and the cutting location
  • the new built structural block contains a LNG storage space which may be merged with the ship hull of the existing LNG carrier or slightly extend the space on both sides of the new-built structural block to provide additional LNG storage space as well deck space.
  • the new built sponson(s) should be built based on new built extended structural block.
  • the extended new built structural block will be integrated with the new built sponson(s), accordingly some places are required for at least one sponson on one side of the ship hull.
  • the existing LNG carrier is only needed during vessel assembly period in the yard, which minimizes the period for the existing LNG carrier to be present in a yard. This will maximize the utilization of the existing LNG carrier.
  • the newly integrated LNG carrier can be utilized as gas process production/regasification facility.
  • This integration will also provide a new lease of life for a floating LNG production/regasification platform or asset.
  • Fig.lA is a partial cross sectional view of an existing LNG carrier
  • Fig.1 B is a partial top view of the existing LNG carrier of Fig.lA;
  • Fig. 1C shows a method for integrating an existing LNG carrier according to one embodiment of the present disclosure
  • Fig.2A is a partial cross sectional side view showing the integrating process of an integrated LNG carrier using an existing LNG carrier of Fig.lA and a new built structural block according to one embodiment of the present disclosure
  • Fig.2B is a partial top view of the integrating process of an integrated LNG carrier of Fig.2A;
  • Fig.2C is a partial cross sectional side view of an integrated LNG carrier according to the process shown in Fig.2A and Fig.2B;
  • Fig.2D is a partial top view of an integrated LNG carrier according to the process shown in Fig.2A and Fig.2B;
  • Fig.2E is a partial cross sectional side view showing the process of integrating new built sponsons with the integrated LNG carrier of Fig.2C according to another embodiment of the present disclosure
  • Fig.2F is a partial top view-showing the process of integrating new built sponsons with the integrated LNG carrier of Fig.2E;
  • Fig.2G is a partial cross sectional side view of an integrated LNG carrier according to the process shown in Fig. 2E and Fig. 2F;
  • Fig.2H is a partial top view of an integrated LNG carrier according to the process shown in Fig.2E and Fig.2F;
  • Fig.3A is a partial cross sectional side view showing the integrating process of an integrated LNG carrier using an existing LNG carrier of Fig.lA and a new built structural block according to an alternative embodiment of the present disclosure;
  • Fig.3B is a partial top view of the integrating process of an integrated LNG carrier of Fig.3A
  • Fig.3C is a partial cross sectional side view of an integrated LNG carrier according to the process shown in Fig.3A and Fig.3B;
  • Fig.3D is a partial top view of an integrated LNG carrier according to the process shown in Fig.3A and Fig.3B;
  • Fig.3E is a partial cross sectional side view showing the process of integrating new built sponsons with the integrated LNG carrier of Fig.3C according to another embodiment of the present disclosure
  • Fig.3F is a partial top view showing the process of integrating new built sponsons with the integrated LNG carrier of Fig.3E;
  • Fig.3G is a partial cross sectional side view of an integrated LNG carrier according to the process shown in Fig. 3E and Fig. 3F;
  • Fig.3H is a partial top view of an integrated LNG carrier according to the process shown in Fig. 3E and Fig. 3F;
  • Fig.4A is a partial cross sectional side view showing the integrating process of an integrated LNG carrier using an existing LNG carrier of Fig.lA and a new built structural block according to an alternative embodiment of the present disclosure
  • Fig.4B is a partial top view of the integrating process of an integrated LNG carrier of Fig.4A
  • Fig.4C is a partial cross sectional side view of an integrated LNG carrier according to the process shown in Fig.4A and Fig.4B;
  • Fig.4D is a partial top view of an integrated LNG carrier according to the process shown in Fig.4A and Fig.4B;
  • Fig.4E is a partial cross sectional side view showing the process of integrating new built sponsons with the integrated LNG carrier of Fig.4C according to another embodiment of the present disclosure;
  • Fig.4F is a partial top view showing the process of integrating new built sponsons with the integrated LNG carrier of Fig. 4E;
  • Fig.4G is a partial cross sectional side view of an integrated LNG carrier according to the process shown in Fig. 4E and Fig. 4F;
  • Fig.4H is a partial top view of an integrated LNG carrier according to the process shown in Fig. 4E and Fig. 4F;
  • Fig.5A is a partial cross sectional side view showing the integrating process of an integrated LNG carrier using an existing LNG carrier of Fig.lA and a new built structural block according to an alternative embodiment of the present disclosure
  • Fig.5B is a partial top view showing the integrating process of an integrated LNG carrier of Fig.5A;
  • Fig.5C is a partial cross sectional side view of an integrated LNG carrier according to the process shown in Fig.5A and Fig.5B;
  • Fig.5D is a partial top view of the integrated LNG carrier according to the process shown in Fig.5A and Fig.5B;
  • Fig.5E is a partial cross sectional side view showing the process of integrating new built sponsons with the integrated LNG carrier of Fig.5C according to another embodiment of the present disclosure
  • Fig.5F is a partial top view of showing the process of integrating new built sponsons with the integrated LNG carrier of Fig.5E
  • Fig.5G is a partial cross sectional side view of an integrated LNG carrier according to the process shown in Fig. 5E and Fig. 5F;
  • Fig.5H is a partial top view of the integrated LNG carrier of Fig.5G;
  • Fig.6A is a partial cross sectional side view showing the integrating process of an integrated LNG carrier using an existing LNG carrier of Fig,1A and a new built structural block according to an alternative embodiment of the present disclosure
  • Fig.6B is a partial top view showing the integrating process of an integrated LNG carrier of Fig.6A;
  • Fig.6C is a partial cross sectional side view of an integrated LNG carrier according to the process shown in Fig.6A and Fig.6B;
  • Fig.6D is a partial top view of the integrated LNG carrier of Fig.6C;
  • Fig.6E is a partial cross sectional side view showing the process of integrating new built sponsons with the integrated LNG carrier of Fig.6C according to another embodiment of the present disclosure
  • Fig.6F is a partial top view showing the process of integrating new built sponsons with the integrated LNG carrier of Fig.6E;
  • Fig.6G is a partial cross sectional side view of an integrated LNG carrier according to the process shown in Fig. 6E and Fig. 6F;
  • Fig.6H is a partial top view of the integrated LNG carrier of Fig.6G
  • Fig.7A is a partial cross sectional side view showing the integrating process of an integrated LNG carrier using an existing LNG carrier of Fig.lA and a new built structural block according to an alternative embodiment of the present disclosure
  • Fig.7B is a partial top view showing the integrating process of an integrated LNG carrier of Fig.7A
  • Fig.7C is a partial cross sectional side view of an integrated LNG carrier according to the process shown in FigJA and Fig.7B;
  • Fig.7D is a partial top view of the integrated LNG carrier of Fig.7C
  • Fig.7E is a partial cross sectional side view showing the process of integrating new built sponsons with the integrated LNG carrier of Fig.7C according to another embodiment of the present disclosure
  • Fig.7F is a partial top view showing the process of integrating new built sponsons with the integrated LNG carrier of Fig.7E;
  • Fig.7G is a partial cross sectional side view of an integrated LNG carrier according to the process shown in Fig. 7E and Fig. 7F;
  • Fig.7H is a partial top view of the integrated LNG carrier of FigJG;
  • Fig.8A is a partial cross sectional side view showing the integrating process of an integrated LNG carrier using an existing LNG carrier of Fig.lA and a new built structural block according to an alternative embodiment of the present disclosure
  • Fig.8B is a partial top view showing the integrating process of an integrated LNG carrier of Fig.7A;
  • Fig.8C is a partial cross sectional side view of an integrated LNG carrier according to the process shown in Fig.8A and Fig.8B;
  • Fig.8D is a partial top view of the integrated LNG carrier of Fig.8C;
  • Fig.8E is a partial cross sectional side view showing the process of integrating new built sponsons with the integrated LNG carrier of Fig.8C according to another embodiment of the present disclosure
  • Fig.8F is a partial top view showing the process of integrating new built sponsons with the integrated LNG carrier of Fig.8E;
  • Fig.8G is a partial cross sectional side view of an integrated LNG carrier according to the process shown in Fig. 8E and Fig. 8F;
  • Fig.8H is a partial top view of the integrated LNG carrier of Fig.8G
  • Fig.9A is a partial cross sectional side view showing the integrating process of an integrated LNG carrier using an existing LNG carrier of Fig.lA and a new built structural block according to an alternative embodiment of the present disclosure
  • Fig.9B is a partial top view showing the integrating process of an integrated LNG carrier of Fig.9A;
  • Fig.9C is a partial cross sectional side view of an integrated LNG carrier according to the process shown in Fig.9A and Fig.9B;
  • Fig.9D is a partial top view of the integrated LNG carrier of Fig.9C;
  • Fig.9E is a partial cross sectional side view showing the process of integrating new built sponsons with the integrated LNG carrier of Fig.9C according to another embodiment of the present disclosure
  • Fig.9F is a partial top view showing the process of integrating new built sponsons with the integrated LNG carrier of Fig.9E;
  • Fig.9G is a partial cross sectional side view of an integrated LNG carrier according to the process shown in Fig. 9E and Fig. 9F;
  • Fig.9H is a partial top view of the integrated LNG carrier of Fig.9G;
  • Fig.10A is a partial cross sectional side view showing the integrating process of an integrated LNG carrier using an existing LNG carrier of Fig.lA and a new built structural block according to an alternative embodiment of the present disclosure
  • Fig.10B is a partial top view showing the integrating process of an integrated LNG carrier of Fig.10A;
  • Fig.lOC is a partial cross sectional side view of an integrated LNG carrier according to the process shown in Fig.10A and Fig.10B;
  • Fig.lOD is a partial top view of the integrated LNG carrier of Fig.lOC;
  • Fig.lOE is a partial cross sectional side view showing the process of integrating new built sponsons with the integrated LNG carrier of Fig.lOC according to another embodiment of the present disclosure
  • Fig.lOF is a partial top view showing the process of integrating new built sponsons with the integrated LNG carrier of Fig.lOE;
  • Fig.10G is a partial cross sectional side view of an integrated LNG carrier according to the process shown in Fig. 10E and Fig. 10F;
  • Fig.10H is a partial top view of the integrated LNG carrier of Fig.10G;
  • Fig.11A is a partial cross sectional side view showing the integrating process of an integrated LNG carrier using an existing LNG carrier of Fig.lA and a new built structural block according to an alternative embodiment of the present disclosure
  • Fig.11B is a partial top view showing the integrating process of an integrated LNG carrier of Fig.11 A;
  • Fig.11C is a partial cross sectional side view of an integrated LNG carrier according to the process shown in Fig.HA and Fig.11B;
  • Fig .11 D is a partial top view of the integrated LNG carrier of Fig.11C
  • Fig.11 E is a partial cross sectional side view showing the process of integrating new built sponsons with the integrated LNG carrier of Fig.11C according to another embodiment of the present disclosure
  • Fig.11F is a partial top view showing the process of integrating new built sponsons with the integrated LNG carrier of Fig.11 E;
  • Fig.11G is a partial cross sectional side view of an integrated LNG carrier according to the process shown in Fig. 11E and Fig. 11F;
  • Fig.11H is a partial top view of the integrated LNG carrier of Fig.11G;
  • Fig.12A is a partial cross sectional side view showing the integrating process of an integrated LNG carrier using an existing LNG carrier of Fig.lA and a new built structural block according to an alternative embodiment of the present disclosure
  • Fig.12B is a partial top view showing the integrating process of an integrated LNG carrier of Fig.12A;
  • Fig.12C is a partial cross sectional side view of an integrated LNG carrier according to the process shown in Fig.12A and Fig.12B;
  • Fig.12D is a partial top view of the integrated LNG carrier of Fig.12C;
  • Fig.12E is a partial cross sectional side view showing the process of integrating new built sponsons with the integrated LNG carrier of Fig.12C according to another embodiment of the present disclosure
  • Fig.12F is a partial top view showing the process of integrating new built sponsons with the integrated LNG carrier of Fig.12E;
  • Fig.12G is a partial cross sectional side view of an integrated LNG carrier according to the process shown in Fig. 12E and Fig. 12F;
  • Fig.12H is a partial top view of the integrated LNG carrier of Fig.12G;
  • Fig.13A is a partial cross sectional side view showing the integrating process of an integrated LNG carrier using an existing LNG carrier of Fig.lA and a new built structural block according to an alternative embodiment of the present disclosure
  • Fig.13B is a partial top view showing the integrating process of an integrated LNG carrier of Fig.13A;
  • Fig.13C is a partial cross sectional side view of an integrated LNG carrier according to the process shown in Fig.13A and Fig.13B;
  • Fig.13D is a partial top view of the integrated LNG carrier of Fig.13C;
  • Fig.13E is a partial cross sectional side view showing the process of integrating new built sponsons with the integrated LNG carrier of Fig.13C according to another embodiment of the present disclosure
  • Fig.13F is a partial top view showing the process of integrating new built sponsons with the integrated LNG carrier of Fig.13E;
  • Fig.13G is a partial cross sectional side view of an integrated LNG carrier according to the process shown in Fig. 13E and Fig. 13F;
  • Fig.13H is a partial top view of the integrated LNG carrier of Fig.13G;
  • Fig.14A is a partial cross sectional side view showing the integrating process of an integrated LNG carrier using an existing LNG carrier of Fig.lA and a new built structural block according to an alternative embodiment of the present disclosure
  • Fig.14B is a partial top view showing the integrating process of an integrated LNG carrier of Fig.14A;
  • Fig.14C is a partial cross sectional side view of an integrated LNG carrier according to the process shown in Fig.14A and Fig.14B;
  • Fig.14D is a partial top view of the integrated LNG carrier of Fig.14C;
  • Fig.14E is a partial cross sectional side view showing the process of integrating new built sponsons with the integrated LNG carrier of Fig.14C according to another embodiment of the present disclosure
  • Fig.14F is a partial top view showing the process of integrating new built sponsons with the integrated LNG carrier of Fig.14E;
  • Fig.14G is a partial cross sectional side view of an integrated LNG carrier according to the process shown in Fig. 14E and Fig. 14F;
  • Fig.14H is a partial top view of the integrated LNG carrier of Fig.14G
  • Fig.15A is a partial cross sectional side view showing the integrating process of an integrated LNG carrier using an existing LNG carrier of Fig.lA and a new built structural block according to an alternative embodiment of the present disclosure
  • Fig.15B is a partial top view showing the integrating process of an integrated LNG carrier of Fig.15A
  • Fig.15C is a partial cross sectional side view of an integrated LNG carrier according to the process shown in Fig.15A and Fig.15B;
  • Fig.15D is a partial top view of the integrated LNG carrier of Fig.15C;
  • Fig.15E is a partial cross sectional side view showing the process of integrating new built sponsons with the integrated LNG carrier of Fig.15C according to another embodiment of the present disclosure
  • Fig.15F is a partial top view showing the process of integrating new built sponsons with the integrated LNG carrier of Fig.15E;
  • Fig.15G is a partial cross sectional side view of an integrated LNG carrier according to the process shown in Fig. 15E and Fig. 15F;
  • Fig.15H is a partial top view of the integrated LNG carrier of Fig.15G.
  • Tank pipework and fittings should be protected from mechanical damage particular care is necessary if cranes are being used nearby
  • a new structural block will be fabricated based on the existing LNG carrier cutting dimension as well required LNG storage capacity, deck space requirement for gas processing production/regasification facility and utility.
  • the longitudinal strength limits of the hull grider determine the elongation size.
  • the increase in the longitudinal bending moment will require a corresponding amount of additional steel in order to maintain the required modulus.
  • the maximum allowable bending moment can become a showstopper if the ship hull is already designed to its optimum and cannot sustain any additional length.
  • Jumboisation technique requires re-engineering, integration of an existing storage system to a newly added system that offsets safe flexibility and functionality asset. Outfitting is the process of installing parts and various subassemblies (e.g., piping systems, ventilation equipment, and electrical components) on the new built block prior to joining the new built block with the existing LNG carrier at the stage of erection of a LNG carrier. The existing LNG carrier's power supply will need to be recalculated due to the increased load. Once jumboisation is done, then the following necessary steps need to be carried out: necessary steps carried out to the existing cryogenic pipeline and the new cryogenic pipeline.
  • subassemblies e.g., piping systems, ventilation equipment, and electrical components
  • the atmospheric pressure of the existing tank and new tank might differ, so proper necessary step may be taken while transferring LNG from the existing tank to a new storage tank.
  • the pump capacity of the existing LNG storage tank might be affected while doing jumboisation as a new structural block increases its deck space and cryogenic line pipes, it needs to carry out re- engineering work to size up the pump or having additional tank to make up the loss during LNG transfer.
  • re-engineering work needs to be carried out for machinery, electrical system, hull Structure, outfitting and required reinforcement.
  • the present jumboisation is not only a technical solution of using an existing LNG carrier for newly integrated additional storage space and increasing deck space for pas processing production/regasification facility, utility and machinery space for other uses but also financially feasible compared to the new built LNG production/regasification vessel.
  • certain existing LNG carriers may widen their opportunity to serve as gas process production/regasification facility with additional LNG storage capacity and extend life of their service.
  • Fig.lA and Fig.l B show an existing LNG carrier 10 based on which jumboisation method according to one embodiment of the present disclosure may be applied.
  • Existing LNG carrier 10 includes a bow 101 , a stern 110 and a midship between bow 101 and stern 110.
  • the midship includes five segments 102, 104, 106,108 and 109.
  • Each segment has a corresponding first, second, third & fourth LNG storage tank and wheel house 112, 114, 116, 18 and 120 built therein.
  • Each individual LNG storage tank has its fixed storage capacity and hence the total storage and transportation capacity of the LNG carrier is the sum of capacity of all the individual LNG storage tanks.
  • a method 250 for integrating an existing LNG carrier according to one embodiment of the present disclosure comprises the following steps, as shown in Fig. 1C:
  • Step 252 a new built structural block will be fabricated or provided as a prefabrication unit from other sources. Then in Step 254, an existing LNG carrier is cut apart into a forward section and an aft section. After that in Step 256, the new built structural block is placed into a space created between an existing LNG carrier cut apart forward and an aft section and, then in Step 258, the new built structural block is jumboized to the forward and an aft section to form an integrated LNG carrier. Besides the steps above, in Step 260, one or more new built sponsons may be fabricated to be integrated with the integrated LNG carrier, as shown in Step 262.
  • measurements and/or site inspections may be carried out to determine the characteristics of an existing LNG carrier, e.g. the dimensions of an existing LNG carrier width, longitudinal & transverse beam location, stiffeners, and existing cryogenic & utility pipelines, cable tray, hookup points and connection interfaces, etc. such information will be used for the fabrication of the new built structural block to ensure compatibility.
  • a new built structural block 200 will be fabricated using either one of the containment systems, i.e. MOSS type containment system or membrane type containment system or provided as a prefabrication unit from other sources.
  • the existing LNG carrier 10 may be brought to the shipyard dry dock to undergo the cutting. Once cutting is done, then either forward or aft section will be moved away to create space and then jumboize the new built structural block with the existing LNG carrier.
  • cutting is performed between stern 110 and the fourth LNG storage tank 118, forming a forward section 201 which includes bow 101 , first 112, second 114, third 116 & fourth LNG storage tank 118 and aft section 202 which includes stern 110 and wheel house 120.
  • a newly created space 205 is formed between the forward section 201 and the aft section 202.
  • the new built structural block 200 is then placed in space 205 by floating or a heavy lift crane, with the forward section 201 jumboized to front end 203 of the new built structural block 200, the aft section 202 jumboized to rear end 204 of the new built structural block 200 .
  • the new built structural block 200 together with the forward section 201 and aft section 202, form an integrated LNG carrier 20 with the new built structural block 200 integrated to an existing LNG carrier, as shown in Fig.2C and Fig.2D
  • New built sponsons in different size configuration on both sides of ship hull will be fabricated.
  • New built sponsons on port side 350 and starboard side 300 with different size configuration will be fabricated separately and integrated with the LNG carrier 20 to form a newly integrated LNG carrier 30, as shown in Fig 2G and Fig 2H.
  • the LNG storage tank of the new built structural block 200 may be same as or different from that in the existing LNG carrier.
  • LNG containment system of the LNG storage tank may be selected from a group consisting of a MOSS type spherical tank, a Gaztransport & Technigaz (GTT) membrane tank, IHI self-supporting prismatic type B SPB tank and an independent type A tank.
  • GTT Gaztransport & Technigaz
  • the present disclosure provides a newly integrated LNG carrier by a new built structural block and one or more new built sponsons which provide additional LNG storage, create deck space for gas process production/regasification facility, utilities and deck space for other machinery usage. This integration also provides new life extension to the existing LNG carrier to serve for current industrial demand with a much shorter delivery schedule than that of required to build new floater from sketch, and also reduces capital expenditure.
  • an existing LNG carrier may be cutting at different location into forward and aft sections, for integration of a new built structural block there between. Later the integrated LNG carrier will again integrate with at least one new built sponson to form a newly Integrated LNG carrier.
  • an existing LNG carrier 10 is cut apart into forward section 206 and an aft section 207. Cutting is performed between a third LNG storage tank 116 and fourth LNG storage tank 118, hence the forward section 206 includes the bow 101 , first, second and third LNG storage tank 112, 114 and 116.
  • the aft section 207 includes stern 110, wheel house 120, and fourth LNG storage tank 118.
  • a new built structural block 210 will be fabricated and then placed into the space 208 created between forward section 206 and aft section 207, and jumboized forward and aft section 206 & 207 to form an integrated LNG carrier 22 with the new built structural block 210 integrated to the existing LNG carrier 10, as shown in Fig.
  • an existing LNG carrier 10 may be cut apart into forward section 211 , 216, 221 and an aft section 212, 217, 222.
  • cutting is performed between second LNG storage tank 114 and third LNG storage tank 1 16 at a mid-ship section.
  • cutting is performed between first LNG storage tank 12 and second LNG storage tank 114 at forward section.
  • cutting is performed between bow 101 and first LNG storage tank 112 at forward bow section.
  • a new built structural block 215, 220, 225 is fabricated and then placed at the space 213, 218, 223 formed by cutting of an existing LNG carrier 10, finally jumboized the cut-apart forward 211 , 216, 221 and aft section 212, 217, 222 to form an integrated LNG carrier 24 (Fig. 4C, 4D), 26(Fig. 5C, 5D), 28 (Fig. 5C, 5D).ln the other embodiment shown in Fig 4E & Fig. 4F, Fig. 5E & Fig. 5F, and Fig. 6E & Fig. 6F, new built sponsons in different size configuration on both sides of the ship hull are fabricated.
  • New built sponsons on port side 350 and starboard side 300 with different size configuration will be fabricated separately and integrated with the integrated LNG carrier 24, 26 & 28 to form a newly integrated LNG carrier 34, 36 & 38.
  • a new built structural block 230 will be fabricated.
  • An existing LNG carrier 10 is cut apart into forward section 226 and an aft section 227, creating a space 228 there between.
  • Forward section includes first, second, third & fourth LNG storage tank 112,114,116 & 118, wheel house 120 and stern 110.
  • An aft section includes a new bow section 600 which may or may not build with turret 700.
  • Turret 700 provides a non-rotating platform for supporting the mooring lines and flexible risers dedicated for gas export import and associated control/service lines.
  • the new structural block 200 is then placed in the space 228 and jumboized forward section 226 and the new built aft bow section 600 to form an integrated LNG carrier 40, as shown in Fig, 7C & Fig. 7D.
  • New built sponsons in different size configuration on both sides of ship hull will be fabricated.
  • New built sponsons on port side 350 and starboard side 300 with different size configuration will be fabricated separately and integrated with the integrated LNG carrier 40 to form a newly integrated LNG carrier 50, as shown in Fig 7G and Fig 7H.
  • a new built structural block 235 will be fabricated.
  • An existing LNG carrier 10 is cut apart into forward section 231 and an aft section 232, creating a space 233 there between.
  • Forward section includes new stern 650 and aft section includes bow 101 , first, second, third and fourth LNG storage tank 1 12, 114, 116 & 118 and wheel house 120.
  • New stern 650 which can be fabricated along with new structural block and then joined with aft section 232.
  • the new structural block 200 is then placed in the space 233 and jumboized forward section 231 and aft section 232 or new stern section 650 to form an integrated LNG carrier 42 as shown in Fig. 8C and Fig. 8D.
  • new built sponsons in different size configuration on both sides of ship hull will be fabricated.
  • New built sponsons on port side 350 and starboard sjde 300 with different size configuration will be fabricated separately and integrated with the integrated LNG carrier 42 to form a newly integrated LNG carrier 52, as shown in Fig 8G and Fig 8H.
  • a new built structural block 400 will be fabricated using either one of the containment systems or provided as a prefabrication unit from other sources.
  • the new built structural block has a similar design to the earlier ones but this structural block width is extended on both starboard and port side with same or different width from the ship hull.
  • the existing LNG carrier 10 may be brought to the shipyard dry dock to undergo the cutting. Once cutting is done, then either forward or aft section will be moved away to create space and then jumboized the new built structural block 400 with an existing LNG carrier 10.
  • cutting is performed between stern 110 and the fourth LNG storage tank 118, forming a forward section 201 which includes bow 101 , first 112, second 114, third 116 & fourth LNG storage tank 118 and aft section 202 which includes stern 110 and wheel house 120.
  • a newly created space 401 is formed between forward section 201 and an aft section 202.
  • the new built structural block 400 is then placed in space 401 by floating or a heavy lift crane, with the forward section 201 jumboized to front end 403 of new built structural block 400, the aft section 202 jumboized to rear end 404 of the new built structural block 400.
  • the new built structural block 400 together with the forward section 201 and aft section 202 to form an integrated LNG carrier 44 with the new built structural block 400 integrated to an existing LNG carrier 10, as shown in Fig.9C and Fig.9D
  • New built sponsons will be fabricated based on the existing LNG carrier 10 and new built structural block 400.
  • New built sponsons may include more than one sponson on both starboard side 800 & 801 and port side 821 & 822 of ship hull in different size configuration which will be fabricated separately and integrated with the integrated LNG carrier 44 to form a newly integrated LNG carrier 54, as shown in Fig 9G and Fig 9H.
  • an existing LNG carrier 10 may be cut apart into forward section 206, 211 , 216 and 221 and an aft section 207,412, 417 and 222.
  • cutting is performed between third LNG storage tank 116 and fourth LNG storage tank 118.
  • cutting is performed between second LNG storage tank 114 and third LNG storage tank 116 at amidship section.
  • cutting is performed between first LNG storage tank 112 and second LNG storage tank 114 at forward section.
  • Fig 13A to 13H cutting is performed between bow 101 and first LNG storage tank 112 at forward bow section.
  • a new built structural block 405, 410, 415 and 420 is then placed at the space 406, 411, 416 and 421 formed by cutting of an existing LNG carrier 10, jumboized the cut-apart forward section 206, 211 , 216 and 221 and aft section 207, 212, 217 and 222 to form an integrated LNG carrier 46 (see Fig. 10C, 10D), 48 ( see Fig. 11C, 11D), 62 (see Fig. 12C, 12D) & 64 (see Fig. 13C, 13D).
  • New built sponsons may include more than one sponson on both starboard sides 803 & 804, 805 & 806, 807 & 808 and 810; port side 823 & 824, 825 & 826, 827 & 828and 830 of the ship hull in different size configuration which will be fabricated separately and integrated with the integrated LNG carrier 46, 48, 62 & 64 to form a newly integrated LNG carrier 56, 58, 72 & 74, as shown in Fig 10G & Fig 10H, Fig 11G & Fig 11 H, Fig 12 G & Fig 12H and Fig 13G & Fig 13H.
  • a new built structural block 425 will be fabricated.
  • An existing LNG carrier 10 is cut apart into forward section 226 and an aft section 227, creating a space 426 there between.
  • Forward section 226 includes first, second, third & fourth LNG storage tank 112,114,116 & 118, wheel house 120 and stern 110.
  • the aft section 227 includes a new bow section 800 which may or may not build with turret 900.
  • Turret 900 provides a non ⁇ rotating platform for supporting the mooring lines and flexible risers dedicated for gas export/import and associated control/service lines.
  • the new structural block 425 is then placed in the space 426 and jumboized forward section 226 and new built aft bow section 800 to form an integrated LNG carrier 66, as shown in Fig. 14C & Fig. 14D.
  • New built sponsons on both sides of the ship hull in different size configuration will be fabricated.
  • New built sponsons on port side 815 and starboard side 835 with different size configuration will be fabricated separately and integrated with Integrated LNG carrier 66 to form a newly integrated LNG carrier 76, as shown in Fig 14G and Fig 14H.
  • a new built structural block 430 will be fabricated.
  • An existing LNG carrier 10 is cut apart into forward section 231 and an aft section 232, creating a space 233 there between.
  • Forward section 231 includes new stern 850 and aft section 232 includes bow 101 , first, second, third and fourth LNG storage tank 112, 114, 116 & 118 and wheel house 120.
  • New stern 850 which can be fabricated along with the new built structural block 430 and then joined with aft section 232.
  • the new built structural block 430 is then placed in the space 431 and jumboized forward section 231 and aft section 232 or new built stern 850 to form an integrated LNG carrier 68, as shown in Fig. 15C and Fig. 15D.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

La présente invention concerne la création d'espaces sur pont formant des zones de stockage de GNL supplémentaires destinés à des modules de regazéification/liquéfaction d'une installation de traitement de gaz, ladite création étant obtenue par agrandissement d'un méthanier existant par une technique de jumboïsation à l'aide d'un bloc structurel nouvellement construit puis par ajout de sponsons nouvellement construits qu'il est proposé d'intégrer au méthanier existant afin d'augmenter la capacité du méthanier existant sans nécessiter l'achat ou la construction d'un engin flottant entièrement nouveau.
PCT/SG2015/000110 2014-04-03 2015-04-02 Procédé d'intégration de blocs structurels et de flotteurs latéraux nouvellement construits à un méthanier existant WO2015152825A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP15773243.9A EP3131807B1 (fr) 2014-04-03 2015-04-02 Procédé d'intégration de blocs structurels et de flotteurs latéraux nouvellement construits à un méthanier existant
BR112015023911A BR112015023911A2 (pt) 2014-04-03 2015-04-02 método de integração de bloco estrutural recém-construído e apêndices com portador lng existente
SG11201506240YA SG11201506240YA (en) 2014-04-03 2015-04-02 Method of integrating new built structural block and sponson with existing lng carrier
AU2015210487A AU2015210487B2 (en) 2014-04-03 2015-04-02 Method of integrating new built structural block and sponson with existing LNG carrier

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SG10201401231S 2014-04-03

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Publication number Priority date Publication date Assignee Title
CN112078758A (zh) * 2020-08-03 2020-12-15 沪东中华造船(集团)有限公司 一种用于lng船改装为fsru的方法
CN113460269A (zh) * 2021-06-25 2021-10-01 沪东中华造船(集团)有限公司 一种将lng旧船改装成lng-fsru船的电站模块结构及方法
WO2023102595A1 (fr) * 2021-12-07 2023-06-15 Charlie Six Pty Ltd Navire à gaz liquéfié
WO2024091110A1 (fr) * 2022-10-27 2024-05-02 Misc Berhad Navire monocoque asymétrique pour production flottante

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WO2010059059A1 (fr) * 2008-11-19 2010-05-27 Moss Maritime As Dispositif pour la production flottante de gaz naturel liquéfié et procédé destiné à convertir un méthanier en un tel dispositif
US7823524B2 (en) * 2008-02-20 2010-11-02 Single Buoy Moorings, Inc. Construction of FPDSO vessel
WO2012072292A1 (fr) * 2010-11-30 2012-06-07 Single Buoy Moorings Inc. Usine de gnl flottante
WO2014120080A1 (fr) * 2013-01-29 2014-08-07 Keppel Offshore & Marine Technology Centre Pte Ltd Procédé de construction de porteur de gaz naturel liquéfié

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KR101210916B1 (ko) * 2009-10-16 2012-12-11 대우조선해양 주식회사 가스연료용 연료탱크를 가지는 부유식 구조물

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US3397663A (en) * 1966-03-16 1968-08-20 Mitsubishi Heavy Ind Ltd Method for rebuilding the hull of a ship to increase its tonnage
JPS59176174A (ja) * 1983-03-24 1984-10-05 Hitachi Zosen Corp 旧船体から新船体へのタンク移設方法
US7823524B2 (en) * 2008-02-20 2010-11-02 Single Buoy Moorings, Inc. Construction of FPDSO vessel
WO2010059059A1 (fr) * 2008-11-19 2010-05-27 Moss Maritime As Dispositif pour la production flottante de gaz naturel liquéfié et procédé destiné à convertir un méthanier en un tel dispositif
WO2012072292A1 (fr) * 2010-11-30 2012-06-07 Single Buoy Moorings Inc. Usine de gnl flottante
WO2014120080A1 (fr) * 2013-01-29 2014-08-07 Keppel Offshore & Marine Technology Centre Pte Ltd Procédé de construction de porteur de gaz naturel liquéfié

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112078758A (zh) * 2020-08-03 2020-12-15 沪东中华造船(集团)有限公司 一种用于lng船改装为fsru的方法
CN113460269A (zh) * 2021-06-25 2021-10-01 沪东中华造船(集团)有限公司 一种将lng旧船改装成lng-fsru船的电站模块结构及方法
WO2023102595A1 (fr) * 2021-12-07 2023-06-15 Charlie Six Pty Ltd Navire à gaz liquéfié
WO2024091110A1 (fr) * 2022-10-27 2024-05-02 Misc Berhad Navire monocoque asymétrique pour production flottante

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BR112015023911A2 (pt) 2017-07-18
EP3131807A4 (fr) 2017-11-15
SG11201506240YA (en) 2015-11-27
EP3131807A1 (fr) 2017-02-22
AU2015210487A1 (en) 2015-10-22
EP3131807B1 (fr) 2019-06-19

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