[특허]Hull conversion of existing vessels for tank integration

Keppel Offshore & Marine Technology Centre Pte Ltd

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Hull conversion of existing vessels for tank integration

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B63B-025/08
미국특허분류(USC)	114/074A; 114/074R
출원번호	US-0123433 (2009-10-09)
등록번호	US-8671863 (2014-03-18)
국제출원번호	PCT/SG2009/000372 (2009-10-09)
§371/§102 date	20110408 (20110408)
국제공개번호	WO2010/042075 (2010-04-15)
발명자 / 주소	Chen, Yun Shui Chong, Wen Sin
출원인 / 주소	Keppel Offshore & Marine Technology Centre Pte Ltd
대리인 / 주소	Arent Fox LLP
인용정보	피인용 횟수 : 3 인용 특허 : 6

초록

The present disclosure relates to hull conversion of existing vessel for tank integration to allow storage of multiple hydrocarbon and non-hydrocarbon products onboard the existing vessel. In a converted vessel, a first liquefied hydrocarbon fluid may be stored in an added independent tank, while a second hydrocarbon fluid or a non-hydrocarbon fluid may be stored in an un-converted carge tank, which can be any one of a centre cargo tank, a port side tank or a starboard side tank.

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1. A tank-integrated vessel, converted from an existing vessel, for storing multiple hydrocarbon products, the tank-integrated vessel comprising: at least one converted tank comprising: an added tank support structure disposed in the at least one converted tank;at least one added independent tank disposed upon the added tank support structure, wherein the added independent tank is operable to store a first liquefied hydrocarbon fluid;a newly-attached upper deck overlaying the at least one added independent tank; andat least an added chock interposed between the newly-attached upper deck and the at least one added independent tank, and at least one unconverted tank operable to store a second hydrocarbon fluid. 2. The tank-integrated vessel of claim 1, wherein the first hydrocarbon fluid is one of a liquefied natural gas, a liquefied petroleum gas and a gas condensate, and the second hydrocarbon fluid is a crude oil. 3. The tank-integrated vessel of claim 2, wherein the tank integrated vessel is one of a Floating Production Storage and Offloading (FPSO) vessel, a Floating Storage and Offloading (FSO) vessel and a shuttle tanker. 4. The tank-integrated vessel of claim 1, wherein the at least one converted tank is at least one of a center tank, a port side wing tank and a starboard side wing tank. 5. The tank-integrated vessel of claim 1, wherein the at least one converted tank further comprising: an added intermediate deck plate disposed in the at least one converted tank and spaced apart over an existing hull structure; anda plurality of added support members interposed between the added intermediate deck plate and the existing hull structure. 6. The tank-integrated vessel of claim 5, wherein the plurality of added support members further include: a plurality of added longitudinal stiffeners installed on an underside of the added intermediate deck plate, and a plurality of added longitudinal girders connecting the added intermediate deck plate and the existing hull structure. 7. The tank-integrated vessel of claim 5, wherein the at least one converted tank further comprising: an added longitudinal bulkhead interposed between the added intermediate deck plate and the existing hull structure for defining at least one added enclosure in cooperation with at least one side wall of the at least one converted tank. 8. The tank-integrated vessel of claim 1, wherein the at least one converted tank further comprising: an added longitudinal bulkhead interposed between the newly-attached upper deck and an existing hull structure for defining a plurality of added enclosures wherein the at least one added independent tank is disposed in at least one of the plurality of added enclosures. 9. The tank-integrated vessel of claim 1, wherein the newly-attached upper deck is one of a cut portion from an existing upper deck and a modified cut portion from an existing upper deck. 10. The tank-integrated vessel of claim 1, wherein the at least one converted tank further comprising: an insulation material disposed on an existing hull structure, wherein the insulation material is operable to maintain a temperature of the existing hull structure within a range when the temperature of the existing hull structure falls below a critical value. 11. The tank-integrated vessel of claim 10, wherein the insulation material is operable as a secondary barrier to protect the existing hull structure from a leakage from the at least one added independent tank. 12. The tank-integrated vessel of claim 1, wherein the at least one converted tank further comprising: a heating system operable to maintain a temperature of an existing hull structure within a range when the temperature of the existing hull structure falls below a critical value. 13. A tank-integrated vessel, converted from an existing vessel, for storing multiple hydrocarbon products, the tank-integrated vessel comprising: at least one converted tank comprising: an added tank support structure disposed in the at least one converted tank;at least one added independent tank disposed upon the added tank support structure, wherein the added independent tank is operable to store a first liquefied hydrocarbon fluid;a newly-attached upper deck overlaying the at least one added independent tank, andat least one unconverted tank operable to store a second hydrocarbon fluid. 14. The tank-integrated vessel of claim 13, wherein the first hydrocarbon fluid is one of a liquefied natural gas, a liquefied petroleum gas and a gas condensate, and the second hydrocarbon fluid is a crude oil. 15. The tank-integrated vessel of claim 14, wherein the tank integrated vessel is one of a Floating Production Storage and Offloading (FPSO) vessel, a Floating Storage and Offloading (FSO) vessel and a shuttle tanker. 16. The tank-integrated vessel of claim 13, wherein the at least one converted tank is at least one of a center tank, a port side wing tank and a starboard side wing tank. 17. The tank-integrated vessel of claim 13, wherein the at least one converted tank further comprising: an added intermediate deck plate disposed in the at least one converted tank and spaced apart over an existing hull structure; anda plurality of added support members interposed between the added intermediate deck plate and the existing hull structure. 18. The tank-integrated vessel of claim 17, wherein the plurality of added support members further include: a plurality of added longitudinal stiffeners installed on an underside of the added intermediate deck plate, and a plurality of added longitudinal girders connecting the added intermediate deck plate and the existing hull structure. 19. The tank-integrated vessel of claim 17, wherein the at least one converted tank further comprising: an added longitudinal bulkhead interposed between the added intermediate deck plate and the existing hull structure for defining at least one added enclosure in cooperation with at least one side wall of the at least one converted tank. 20. The tank-integrated vessel of claim 13, wherein the at least one converted tank further comprising: an added longitudinal bulkhead interposed between the newly-attached upper deck and an existing hull structure for defining a plurality of added enclosures wherein the at least one added independent tank is disposed in at least one of the plurality of added enclosures. 21. The tank-integrated vessel of claim 13, wherein the newly-attached upper deck is one of a cut portion from an existing upper deck and a modified cut portion from an existing upper deck. 22. The tank-integrated vessel of claim 13, wherein the at least one converted tank further comprising: an insulation material disposed on an existing hull structure, wherein the insulation material is operable to maintain a temperature of the existing hull structure within a range when the temperature of the existing hull structure falls below a critical value. 23. The tank-integrated vessel of claim 22, wherein the insulation material is operable as a secondary barrier to protect the existing hull structure from a leakage from the at least one added independent tank. 24. The tank-integrated vessel of claim 13, wherein the at least one converted tank further comprising: a heating system operable to maintain a temperature of an existing hull structure within a range when the temperature of the existing hull structure falls below a critical value. 25. A method of tank integration and conversion of a vessel for storing multiple hydrocarbon products, the method comprising: cutting a portion of an existing upper deck overlaying a tank selected for conversion;installing a tank support structure in the tank selected for conversion;installing an intermediate deck plate in the tank selected for conversion, wherein the intermediate deck plate is spaced apart over an existing hull structure;installing a plurality of support members interposed between the intermediate deck plate and the existing hull structure;installing at least one independent tank upon the tank support structure; anddisposing a newly-attached upper deck for enclosing the at least one independent tank in the tank selected for conversion, wherein the at least one independent tank is operable to store a first liquefied hydrocarbon fluid, and at least one unconverted tank is operable to store a second hydrocarbon fluid. 26. The method of claim 25, further comprising: installing a longitudinal bulkhead interposed between the intermediate deck plate and the existing hull structure to define at least one added enclosure in cooperation with at least one side wall of the tank selected for conversion, wherein the at least one added enclosure is operable to store the second hydrocarbon fluid. 27. The method of claim 25, wherein cutting a portion of an upper deck includes cutting a portion of an upper deck overlaying at least one of the port side wing tank and the starboard side wing tank, the method further comprising: installing an other tank support structure in the at least one of the port side wing tank and the starboard side wing tank; andinstalling an other independent tank upon the other tank support structure, wherein the other independent tank is operable to store the first liquefied hydrocarbon fluid. 28. A method of tank integration and conversion of a vessel for storing multiple hydrocarbon products, the method comprising: cutting a portion of an existing upper deck overlaying a tank selected for conversion;installing a tank support structure in the tank selected for conversion;installing at least one longitudinal bulkhead interposed between the newly-attached upper deck and an existing hull structure for defining a plurality of added enclosures in cooperation with at least one side wall of the tank selected for conversion, wherein the at least one added independent tank is disposed in at least one of the plurality of added enclosures, and wherein installing a tank support structure in the tank selected for conversion includes installing a tank support structure in the at least one of the plurality of added enclosures;installing at least one independent tank upon the tank support structure; anddisposing a newly-attached upper deck for enclosing the at least one independent tank in the tank selected for conversion, wherein the at least one independent tank is operable to store a first liquefied hydrocarbon fluid, and at least one unconverted tank is operable to store a second hydrocarbon fluid. 29. The method of claim 28, wherein cutting a portion of an upper deck includes cutting a portion of an upper deck overlaying at least one of the port side wing tank and the starboard side wing tank, the method further comprising: installing an other tank support structure in the at least one of the port side wing tank and the starboard side wing tank; andinstalling an other independent tank upon the other tank support structure, wherein the other independent tank is operable to store the first liquefied hydrocarbon fluid.

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Hull conversion of existing vessels for tank integration

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Hull conversion of existing vessels for tank integration

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