WO2019208550A1 - Offshore floating structure - Google Patents
Offshore floating structure Download PDFInfo
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- WO2019208550A1 WO2019208550A1 PCT/JP2019/017165 JP2019017165W WO2019208550A1 WO 2019208550 A1 WO2019208550 A1 WO 2019208550A1 JP 2019017165 W JP2019017165 W JP 2019017165W WO 2019208550 A1 WO2019208550 A1 WO 2019208550A1
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- WIPO (PCT)
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- hull
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- tank
- floating structure
- cofferdam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B11/00—Interior subdivision of hulls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B11/00—Interior subdivision of hulls
- B63B11/02—Arrangement of bulkheads, e.g. defining cargo spaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B11/00—Interior subdivision of hulls
- B63B11/04—Constructional features of bunkers, e.g. structural fuel tanks, or ballast tanks, e.g. with elastic walls
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- 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
Definitions
- the present invention relates to an offshore floating structure provided with a zero-type dangerous place in the hull.
- an oil storage tank is arranged in the center of the hull where the shore side is substantially parallel.
- a fore peak tank is formed in front of the oil storage tank with a partition wall therebetween (Patent Document 1), and an engine room is disposed on the rear stern part with a pump chamber or the like interposed therebetween, for example.
- FPSO and FSO it is necessary to provide equipment related to the safety of the hull such as a fire pump and a seawater supply pump for the fire pump.
- These facilities are arranged at the bow and stern, respectively, on the bow side in the fore peak tank and on the upper deck of the bow, and in the engine room at the stern.
- the oil storage tank provided in the center of the hull is a zero-type dangerous place, and the fore peak tank and pump room, which are the enclosed compartments adjacent to this, are one-type dangerous places. For this reason, the fire pump room, the seawater supply pump room for the fire pump, the engine room, etc. are in contact with hazardous areas.
- the object of the present invention is to more safely arrange equipment related to the safety of a hull with a simple configuration in an offshore floating structure including a ship having a zero-type hazardous area.
- the offshore floating structure of the present invention also has the same type of overlap in cofferdams, fuel tanks, pump rooms, ballast tanks, and fresh water tanks between Class 0 hazardous locations and sections where equipment related to ship safety is placed.
- the fresh water tank is characterized by not being adjacent to the zero-type hazardous area.
- ⁇ Class 0 dangerous place is, for example, oil storage tank.
- the cophadam When a cofferdam is placed adjacent to a zero-hazardous location between the zero-hazardous location and the compartment where the hull safety equipment is located, the cophadam has an inert gas sealing device, a gas detector, a flood warning At least one of a device and a drainage device is arranged.
- the ballast tank when the ballast tank is disposed adjacent to the zero-class hazardous area between the zero-class hazardous area and the section where the equipment relating to the safety of the hull is disposed, the ballast tank includes an inert gas sealing device, a gas detection device. At least one of the vessels is arranged.
- the length of the cofferdam, ballast tank, or fuel tank placed adjacent to the hazardous area in the longitudinal direction of the hull is 1.2 m or more.
- the type 1 or type 2 hazardous area and the compartment where the equipment relating to the safety of the hull are arranged are separated via at least one of a cofferdam, a fuel tank, a pump room, a ballast tank, and a fresh water tank.
- Zero hazardous area means “a compartment or area where an explosive mixture is present continuously or for a long period of time”.
- the “1 type dangerous place” means “a section or a zone where an explosive mixture is generated in a normal state”.
- two kinds of dangerous places means “a section or a zone where an explosive mixture may be generated in an abnormal state”.
- FIG. 1 is a schematic side view of an offshore floating structure according to a first embodiment of the present invention
- FIG. 2 is an enlarged plan view of a bow portion of FIG.
- the offshore floating structure 10 is, for example, a floating production storage and loading facility (FPSO) having a hull shape, and the hull is composed of a hull center portion 14 and a stern portion 16 that are substantially parallel to the bow portion 12 and the shore side.
- FPSO floating production storage and loading facility
- ballast tanks 20 are disposed on both sides of the tank 18, and the bow portion 12 and the hull center portion 14 are separated by, for example, a partition wall 22 (see FIG. 2).
- a forepeak tank 24 is formed in the bow portion 12 separated from the hull center portion 14 by the partition wall 22.
- a first separation section, for example a cofferdam 25, is provided for separation from the first separation section.
- the cofferdam 25 is provided with at least one of an inert gas sealing device, a gas detector, a flooding alarm device, and a
- a seawater supply pump chamber 26 for a fire pump is disposed so that the entire periphery thereof is surrounded by the forepeak tank 24 and not adjacent to the cofferdam 25 which is the first separation section. That is, the forepeak tank 24 is provided so that a section in which equipment relating to the safety of the hull such as the seawater supply pump chamber 26 for the fire pump is installed is not adjacent to the first separation section (hazardous area) which is a one-type dangerous place. It functions as a second separation section.
- the seawater supply pump chamber 26 for the firefighting pump passes vertically from the ship bottom to the upper deck 28 of the bow 12, and the bow firefighting pump chamber 30 is provided on the upper deck 28 to which the seawater supply pump chamber 26 for the firefighting pump communicates.
- a pump 26P for pumping up seawater is disposed near the bottom of the seawater supply pump chamber 26 for the fire pump, and seawater can be supplied to the bow fire pump 30P installed in the bow fire pump chamber 30 through the pipe 26A.
- a cargo pump chamber 34 is disposed behind the tank 18 with a partition wall 32 behind the stern side of the hull center portion 14.
- a cofferdam 38 is provided behind the cargo pump chamber 34 (stern side) so that the cargo pump chamber 34 and the engine chamber 36 provided in the stern portion 16 are not adjacent to each other.
- a stern fire extinguishing pump 36P is provided in the engine room 36, and seawater pumped up by a pump 40P disposed near the bottom of the ship can be supplied through a pipe 36A.
- the cargo pump chamber 34 functions as a first separation section that separates the cofferdam 38 from the tank 18 that is a zero-type dangerous place
- the cofadam 38 is an engine room 36 that is a section in which equipment related to the safety of the hull is installed.
- the section where the equipment related to the safety of the hull such as the pump 40P for supplying seawater to the stern fire pump 36P and the stern fire pump 36P is installed is separated so as not to be adjacent to the dangerous place. That is, in FIG. 1, the section A including the tank 18, the cofferdam 25, and the cargo pump chamber 34 is a dangerous place.
- a section in which equipment related to the safety of the hull such as a fire pump and a seawater supply pump for a fire pump is installed is not adjacent to a dangerous place.
- Equipment related to the safety of the hull such as a fire pump and a seawater supply pump for a fire pump is installed is not adjacent to a dangerous place.
- Devices that are separated and have a simple configuration can be arranged more safely with respect to the safety of the hull.
- compartment equipment related to the safety of the hull is arranged adjacent to the hazardous area, technical evaluation on the predicted heat flux during fire 100kw / m 2 If it exceeds, it is necessary to perform class H fire prevention treatment.
- Class H fire prevention treatment is costly, has a strict construction procedure, and takes a long time for construction, so it greatly affects the cost and construction period of the entire ship.
- a section in which equipment related to zero-type hazardous locations (for example, cargo tanks) and hull safety is arranged in advance.
- the bow fire extinguishing pump chamber 30 provided on the upper deck 28 of the bow portion 12 in the first embodiment is provided in the bow tower 42, and cargo oil is supplied to the shuttle tanker etc. on the bow tower deck 44.
- An off-loading hose reel 46 around which a hose for discharging the cargo is wound, and a cargo oil pipe 48 for feeding cargo oil to the reel are arranged.
- the same referential mark is used and the description is abbreviate
- the section where the equipment related to the safety of the hull such as the bow fire extinguishing pump chamber 30 is not located adjacent to the hazardous area is located above the bow fire extinguishing pump chamber 30, that is, below the bow tower deck 44.
- Sections such as Cofferdam 50 are provided. Since the section that is in contact with the 1st or 2nd type hazardous area does not become a hazardous area, the cofferdam 50 separates the bow fire extinguishing pump chamber 30 so as not to be adjacent to the hazardous area (1st or 2nd type hazardous area). Functions as a separation compartment.
- the type 2 dangerous place corresponds to an open section adjacent to the type 0 dangerous place.
- the bow fire extinguishing pump chamber is dangerous even if an offloading hose reel and cargo oil piping joints are arranged on the bow deck. It can be separated without being adjacent to the location, and equipment related to the safety of the hull can be arranged more safely with a simple structure, and the labor of technical evaluation and the materials / construction costs of class H fire prevention treatment can be saved. .
- the first separation section that becomes one or two kinds of dangerous places is not a dangerous place between the zero-type dangerous place and the section in which equipment related to the safety of the hull is arranged.
- the section where the equipment related to the safety of the hull is placed should not be adjacent to the hazardous area.
- the same kind of tank and space (chamber) can also be applied to the first and second separation sections.
- the cofferdam and the cargo pump chamber have been described as examples of the first separation section.
- a section such as a cofadam, a fuel tank, a pump chamber, and a ballast tank can be employed.
- the fore peak tank and the cofferdam are described as examples of the second separation section.
- a section such as a cofadam, a fuel tank, a pump chamber, a ballast tank, and a fresh water tank is employed as the second separation section. be able to.
- the first separation section when a cofferdam is employed in the first separation section as in the present embodiment, at least one of an inert gas sealing device, a gas detector, a flooding alarm device, and a drainage device is disposed in the first separation section. Is done.
- a ballast tank is adopted as the first separation section, at least one of the inert gas sealing device and the gas detector is arranged in the first separation section.
- the length of the first separation section or the second separation section in the longitudinal direction of the hull is set to 1.2 m or more. Also, for example, the length of the cofferdam, ballast tank, or fuel tank arranged adjacent to the hazardous area in the longitudinal direction of the hull is 1.2 m or more.
- the fire pump room is cited as a section for installing equipment related to the safety of the hull, but a section for installing equipment related to safety of the hull, such as an emergency generator room for installing an emergency generator, is provided.
- a section for installing equipment related to safety of the hull such as an emergency generator room for installing an emergency generator.
- FPSO has been described as an example.
- other offshore areas that have zero-type hazardous areas and need to be provided with low-cost sections for installing equipment related to ship safety. It can also be applied to floating structures (including ships).
Abstract
An offshore floating structure that comprises an oil tank 18 that is a zone 0 hazardous area. A cofferdam 25 and a fore peak tank 24 are arranged between the oil tank 18 and a fire pump seawater supply pump chamber 26 at which a bow fire pump 30P is arranged, and a cargo pump chamber 34 and a cofferdam 38 are arranged between the oil tank 18 and a machinery room 36 at which a stern fire pump 36P is arranged, which prevents the compartments at which apparatuses related to the safety of a ship are arranged from being adjacent to the zone 0 hazardous area.
Description
本発明は、船体内に０種危険場所が設けられた洋上浮体構造物に関する。
The present invention relates to an offshore floating structure provided with a zero-type dangerous place in the hull.
例えば、浮体式生産貯蔵積出設備（ＦＰＳＯ）や浮体式貯蔵積出設備（ＦＳＯ）などの洋上浮体構造物では、舷側が略平行となる船体中央部に貯油タンクが配置される。貯油タンクの前方には、隔壁を隔ててフォアピークタンクが形成され（特許文献１）、後方の船尾部には例えばポンプ室等を挟んで機関室が配置される。ＦＰＳＯやＦＳＯでは、消火ポンプや消火ポンプ用海水供給ポンプなど船体の安全に関わる機器を設ける必要がある。これらの設備は各々船首部および船尾部に配置され、船首側においてはフォアピークタンク内や船首部上甲板上に設けたポンプ室等に、船尾部では機関室内等に配置される。
For example, in an offshore floating structure such as a floating production storage and loading facility (FPSO) or a floating storage and loading facility (FSO), an oil storage tank is arranged in the center of the hull where the shore side is substantially parallel. A fore peak tank is formed in front of the oil storage tank with a partition wall therebetween (Patent Document 1), and an engine room is disposed on the rear stern part with a pump chamber or the like interposed therebetween, for example. In FPSO and FSO, it is necessary to provide equipment related to the safety of the hull such as a fire pump and a seawater supply pump for the fire pump. These facilities are arranged at the bow and stern, respectively, on the bow side in the fore peak tank and on the upper deck of the bow, and in the engine room at the stern.
しかし、船体中央部に設けられる貯油タンクは０種危険場所であり、これに隣接する閉囲区画であるフォアピークタンクやポンプ室等は１種危険場所となる。そのため消火ポンプ室、消火ポンプ用海水供給ポンプ室、機関室等は危険場所に接する。
However, the oil storage tank provided in the center of the hull is a zero-type dangerous place, and the fore peak tank and pump room, which are the enclosed compartments adjacent to this, are one-type dangerous places. For this reason, the fire pump room, the seawater supply pump room for the fire pump, the engine room, etc. are in contact with hazardous areas.
本発明は、０種危険場所を備える船舶を含む洋上浮体構造物において、簡略な構成で船体の安全に関わる機器をより安全に配置することを目的としている。
The object of the present invention is to more safely arrange equipment related to the safety of a hull with a simple configuration in an offshore floating structure including a ship having a zero-type hazardous area.
本発明の洋上浮体構造物は、０種危険場所と船体の安全に関わる機器が配置される区画との間を、コファダム、燃料タンク、ポンプ室、バラストタンク、清水タンクの中の同種の重複も含めて少なくとも２つの区画を介して隔てるとともに、清水タンクに関しては、０種危険場所に隣接させないことを特徴としている。
The offshore floating structure of the present invention also has the same type of overlap in cofferdams, fuel tanks, pump rooms, ballast tanks, and fresh water tanks between Class 0 hazardous locations and sections where equipment related to ship safety is placed. In addition to being separated through at least two compartments, the fresh water tank is characterized by not being adjacent to the zero-type hazardous area.
０種危険場所は、例えば貯油タンクである。０種危険場所と船体の安全に関わる機器が配置される区画との間において、コファダムが０種危険場所に隣接して配置される場合、コファダムには、イナートガス封入装置、ガス検知器、浸水警報装置、排水装置のうちの少なくとも１つが配置される。また、０種危険場所と船体の安全に関わる機器が配置される区画との間において、バラストタンクが０種危険場所に隣接して配置される場合、バラストタンクには、イナートガス封入装置、ガス検知器のうちの少なくとも１つが配置される。
〇 Class 0 dangerous place is, for example, oil storage tank. When a cofferdam is placed adjacent to a zero-hazardous location between the zero-hazardous location and the compartment where the hull safety equipment is located, the cophadam has an inert gas sealing device, a gas detector, a flood warning At least one of a device and a drainage device is arranged. In addition, when the ballast tank is disposed adjacent to the zero-class hazardous area between the zero-class hazardous area and the section where the equipment relating to the safety of the hull is disposed, the ballast tank includes an inert gas sealing device, a gas detection device. At least one of the vessels is arranged.
危険場所に隣接して配置されるコファダム、バラストタンク、または燃料タンクの船体長手方向の長さは、１．２ｍ以上である。１種または２種危険場所と船体の安全に関わる機器が配置される区画との間を、コファダム、燃料タンク、ポンプ室、バラストタンク、清水タンクの中の少なくとも１つの区画を介して隔てる。
∙ The length of the cofferdam, ballast tank, or fuel tank placed adjacent to the hazardous area in the longitudinal direction of the hull is 1.2 m or more. The type 1 or type 2 hazardous area and the compartment where the equipment relating to the safety of the hull are arranged are separated via at least one of a cofferdam, a fuel tank, a pump room, a ballast tank, and a fresh water tank.
なお、本明細書、特許請求の範囲等において、「０種危険場所」とは、「爆発性混合気が継続的に存在しているか又は長期間にわたり存在している区画または区域」のこととであり、「１種危険場所」とは、「通常状態において爆発性混合気が生成される区画または区域」のことである。また、「２種危険場所」とは、「異常状態において爆発性混合気が生成されるおそれのある区画または区域」のことである。
In the present specification, claims, etc., “Zero hazardous area” means “a compartment or area where an explosive mixture is present continuously or for a long period of time”. The “1 type dangerous place” means “a section or a zone where an explosive mixture is generated in a normal state”. In addition, “two kinds of dangerous places” means “a section or a zone where an explosive mixture may be generated in an abnormal state”.
本発明によれば、０種危険場所を備える船舶を含む洋上浮体構造物において、簡略な構成で船体の安全に関わる機器をより安全に配置することができる。
According to the present invention, in an offshore floating structure including a ship having a zero-type hazardous area, it is possible to more safely arrange equipment related to the safety of the hull with a simple configuration.
以下、本発明の実施形態について添付図面を参照して説明する。
図１は、本発明の第１実施形態である洋上浮体構造物の概略的な側面図であり、図２は、図１の船首部の拡大平面図である。 Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a schematic side view of an offshore floating structure according to a first embodiment of the present invention, and FIG. 2 is an enlarged plan view of a bow portion of FIG.
図１は、本発明の第１実施形態である洋上浮体構造物の概略的な側面図であり、図２は、図１の船首部の拡大平面図である。 Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a schematic side view of an offshore floating structure according to a first embodiment of the present invention, and FIG. 2 is an enlarged plan view of a bow portion of FIG.
洋上浮体構造物１０は、例えば、船体形状を呈する浮体式生産貯蔵積出設備（ＦＰＳＯ）であり、船体は、船首部１２と舷側が略平行な船体中央部１４と船尾部１６とから構成される。船体中央部１４には、例えば多数に区画され、貨物油等を貯留するタンク（貯油タンク）１８が配置される。タンク１８の両側には、例えばバラストタンク２０が配置され、船首部１２と船体中央部１４とは例えば隔壁２２によって隔てられる（図２参照）。隔壁２２によって船体中央部１４と隔てられた船首部１２には、フォアピークタンク２４が形成され、フォアピークタンク２４とタンク１８の間には、フォアピークタンク２４を０種危険場所であるタンク１８から分離する第１分離区画、例えばコファダム２５が設けられる。コファダム２５には、イナートガス封入装置、ガス検知器、浸水警報装置、排水装置のうちの少なくとも１つが配置される。
The offshore floating structure 10 is, for example, a floating production storage and loading facility (FPSO) having a hull shape, and the hull is composed of a hull center portion 14 and a stern portion 16 that are substantially parallel to the bow portion 12 and the shore side. The In the hull center portion 14, for example, a tank (oil storage tank) 18 that is partitioned into a large number and stores cargo oil or the like is disposed. For example, ballast tanks 20 are disposed on both sides of the tank 18, and the bow portion 12 and the hull center portion 14 are separated by, for example, a partition wall 22 (see FIG. 2). A forepeak tank 24 is formed in the bow portion 12 separated from the hull center portion 14 by the partition wall 22. A first separation section, for example a cofferdam 25, is provided for separation from the first separation section. The cofferdam 25 is provided with at least one of an inert gas sealing device, a gas detector, a flooding alarm device, and a drainage device.
フォアピークタンク２４内には、消火ポンプ用海水供給ポンプ室２６が、その周囲が全てフォアピークタンク２４に取り囲まれ、第１分離区画であるコファダム２５に隣接しないように配置される。すなわち、フォアピークタンク２４は、消火ポンプ用海水供給ポンプ室２６など船体の安全に関わる機器が設置される区画を１種危険場所となる第１分離区画（危険場所）に隣接しないように設けられる第２分離区画として機能する。
In the forepeak tank 24, a seawater supply pump chamber 26 for a fire pump is disposed so that the entire periphery thereof is surrounded by the forepeak tank 24 and not adjacent to the cofferdam 25 which is the first separation section. That is, the forepeak tank 24 is provided so that a section in which equipment relating to the safety of the hull such as the seawater supply pump chamber 26 for the fire pump is installed is not adjacent to the first separation section (hazardous area) which is a one-type dangerous place. It functions as a second separation section.
消火ポンプ用海水供給ポンプ室２６は、船底から船首部１２の上甲板２８にまで縦通し、消火ポンプ用海水供給ポンプ室２６が連通する上甲板２８上には船首部消火ポンプ室３０が設けられる。消火ポンプ用海水供給ポンプ室２６の船底近くには海水を汲み上げるためのポンプ２６Ｐが配置され、配管２６Ａを通して船首部消火ポンプ室３０に設置される船首部消火ポンプ３０Ｐに海水を供給可能である。
The seawater supply pump chamber 26 for the firefighting pump passes vertically from the ship bottom to the upper deck 28 of the bow 12, and the bow firefighting pump chamber 30 is provided on the upper deck 28 to which the seawater supply pump chamber 26 for the firefighting pump communicates. . A pump 26P for pumping up seawater is disposed near the bottom of the seawater supply pump chamber 26 for the fire pump, and seawater can be supplied to the bow fire pump 30P installed in the bow fire pump chamber 30 through the pipe 26A.
船体中央部１４の船尾側において、タンク１８の後方には、隔壁３２を隔ててカーゴポンプ室３４が配置される。カーゴポンプ室３４の更に後方（船尾側）には、カーゴポンプ室３４と船尾部１６に設けられた機関室３６とが隣接しないように例えばコファダム３８が設けられる。機関室３６内には、船尾部消火ポンプ３６Ｐが設けられ、船底近くに配置されたポンプ４０Ｐにより汲み上げられた海水が配管３６Ａを通して供給可能である。
A cargo pump chamber 34 is disposed behind the tank 18 with a partition wall 32 behind the stern side of the hull center portion 14. For example, a cofferdam 38 is provided behind the cargo pump chamber 34 (stern side) so that the cargo pump chamber 34 and the engine chamber 36 provided in the stern portion 16 are not adjacent to each other. A stern fire extinguishing pump 36P is provided in the engine room 36, and seawater pumped up by a pump 40P disposed near the bottom of the ship can be supplied through a pipe 36A.
すなわち、カーゴポンプ室３４は、コファダム３８を０種危険場所であるタンク１８から分離する第１分離区画として機能し、コファダム３８は、船体の安全に関わる機器が設置される区画である機関室３６が第１分離区画であるカーゴポンプ室３４に隣接しないように設けられる第２分離区画として機能する。これにより、船尾部消火ポンプ３６Ｐや船尾部消火ポンプ３６Ｐに海水を供給するポンプ４０Ｐなど、船体の安全に関わる機器が設置される区画を危険場所に隣接しないように分離する。すなわち、図１において、タンク１８、コファダム２５、カーゴポンプ室３４を含む区間Ａが危険場所となる。
That is, the cargo pump chamber 34 functions as a first separation section that separates the cofferdam 38 from the tank 18 that is a zero-type dangerous place, and the cofadam 38 is an engine room 36 that is a section in which equipment related to the safety of the hull is installed. Functions as a second separation section provided so as not to be adjacent to the cargo pump chamber 34 which is the first separation section. Thereby, the section where the equipment related to the safety of the hull such as the pump 40P for supplying seawater to the stern fire pump 36P and the stern fire pump 36P is installed is separated so as not to be adjacent to the dangerous place. That is, in FIG. 1, the section A including the tank 18, the cofferdam 25, and the cargo pump chamber 34 is a dangerous place.
以上のように構成することで、第１実施形態の洋上浮体構造物では、消火ポンプや消火ポンプ用海水供給ポンプなど船体の安全に関わる機器が設置される区画が、危険場所に隣接することなく分離され、簡略な構成で船体の安全に関わる機器をより安全に配置することができる。
By configuring as described above, in the offshore floating structure according to the first embodiment, a section in which equipment related to the safety of the hull such as a fire pump and a seawater supply pump for a fire pump is installed is not adjacent to a dangerous place. Devices that are separated and have a simple configuration can be arranged more safely with respect to the safety of the hull.
ＭＯＤＵコード（移動式海底資源掘削船構造設備規則）の下では、船体の安全に関わる機器が配置された区画が危険場所に隣接し、技術評価上、火災時の予測熱流束が１００ｋｗ／ｍ２を超える場合、Ｈ級防火処理を行う必要がある。Ｈ級防火処理は高コストかつ、施工要領が厳しく、施工に時間がかかるため、船全体のコストや工期に大きな影響を及ぼす。しかし、本実施形態によれば、設計初期段階において、火災時に予測される熱流束の大小に関わらず、事前に０種危険場所（例えばカーゴタンク）と船体の安全に関わる機器が配置された区画（例えば消火ポンプ室）の間に２区画を挟む配置とすることで、ＭＯＤＵコードの下においても技術評価の手間とＨ級防火処理の材料／施工コストを省くことができる。
Under MODU code (mobile offshore drilling vessel structure Equipment Regulations), compartment equipment related to the safety of the hull is arranged adjacent to the hazardous area, technical evaluation on the predicted heat flux during fire 100kw / m 2 If it exceeds, it is necessary to perform class H fire prevention treatment. Class H fire prevention treatment is costly, has a strict construction procedure, and takes a long time for construction, so it greatly affects the cost and construction period of the entire ship. However, according to the present embodiment, in the initial design stage, regardless of the magnitude of the heat flux predicted in the event of a fire, a section in which equipment related to zero-type hazardous locations (for example, cargo tanks) and hull safety is arranged in advance. By arranging the two sections between the fire extinguishing pump chambers (for example, a fire extinguishing pump chamber), it is possible to save the technical evaluation effort and the material / construction cost of the H-class fire prevention treatment even under the MODU code.
次に図３を参照して、第２実施形態の洋上浮体構造物について説明する。第２実施形態では、第１実施形態において船首部１２の上甲板２８上に設けられた船首部消火ポンプ室３０が船首楼４２内に設けられ、船首楼甲板４４上にシャトルタンカー等に貨物油を払い出すためのホースが巻かれたオフローディングホースリール４６や、これに貨物油を送油するための貨物油配管４８が配置される。なお、第１実施形態と同様の構成については同一参照符号を用い、その説明を省略する。
Next, the offshore floating structure of the second embodiment will be described with reference to FIG. In the second embodiment, the bow fire extinguishing pump chamber 30 provided on the upper deck 28 of the bow portion 12 in the first embodiment is provided in the bow tower 42, and cargo oil is supplied to the shuttle tanker etc. on the bow tower deck 44. An off-loading hose reel 46 around which a hose for discharging the cargo is wound, and a cargo oil pipe 48 for feeding cargo oil to the reel are arranged. In addition, about the structure similar to 1st Embodiment, the same referential mark is used and the description is abbreviate | omitted.
オフローディングホースリール４６や貨物油配管４８の接続フランジ４８Ｆの周辺は、１種または２種危険場所となるため、船首楼甲板４４上の一部は危険場所となる。そのため本実施形態では、船首部消火ポンプ室３０など船体の安全に関わる機器が配置される区画が危険場所に隣接しないように、船首部消火ポンプ室３０の上部、すなわち船首楼甲板４４の下部にコファダム５０等の区画を設ける。１種または２種危険場所に離接する区画は、危険場所とならないため、コファダム５０は船首部消火ポンプ室３０を、危険場所（１種または２種危険場所）に隣接させないように分離する第２分離区画として機能する。なお、本実施形態において、２種危険場所は０種危険場所に隣接する開放区画に対応する。
Since the vicinity of the connection flange 48F of the offloading hose reel 46 and the cargo oil pipe 48 is one or two kinds of dangerous places, a part on the bow tower deck 44 becomes a dangerous place. Therefore, in the present embodiment, the section where the equipment related to the safety of the hull such as the bow fire extinguishing pump chamber 30 is not located adjacent to the hazardous area is located above the bow fire extinguishing pump chamber 30, that is, below the bow tower deck 44. Sections such as Cofferdam 50 are provided. Since the section that is in contact with the 1st or 2nd type hazardous area does not become a hazardous area, the cofferdam 50 separates the bow fire extinguishing pump chamber 30 so as not to be adjacent to the hazardous area (1st or 2nd type hazardous area). Functions as a separation compartment. In the present embodiment, the type 2 dangerous place corresponds to an open section adjacent to the type 0 dangerous place.
以上のように、第２実施形態においては、第１実施形態の効果に加え、船首楼甲板上にオフローディングホースリールや、貨物油配管の接手が配置されても、船首部消火ポンプ室が危険場所に隣接することなく分離され、簡略な構成で船体の安全に関わる機器をより安全に配置することができ、また、技術評価の手間とＨ級防火処理の材料／施工コストを省くことができる。
As described above, in the second embodiment, in addition to the effects of the first embodiment, the bow fire extinguishing pump chamber is dangerous even if an offloading hose reel and cargo oil piping joints are arranged on the bow deck. It can be separated without being adjacent to the location, and equipment related to the safety of the hull can be arranged more safely with a simple structure, and the labor of technical evaluation and the materials / construction costs of class H fire prevention treatment can be saved. .
以上のように、本実施形態では、０種危険場所と船体の安全に関わる機器が配置される区画との間に、１種または２種危険場所となる第１分離区画と、危険場所とならない第２分離区画とを順次配置し、また、１種または２種危険場所と船体の安全に関わる機器が配置される区画との間に、危険場所とならない第２分離区画を配置することで、船体の安全に関わる機器が配置される区画が危険場所に隣接しないようにしている。なお、第１、第２分離区画に同種のタンクや空間（室）を適用することもできる。
As described above, in the present embodiment, the first separation section that becomes one or two kinds of dangerous places is not a dangerous place between the zero-type dangerous place and the section in which equipment related to the safety of the hull is arranged. By sequentially arranging the second separation section, and by arranging the second separation section that does not become a dangerous place between the one or two kinds of dangerous place and the section where the equipment related to the safety of the hull is arranged, The section where the equipment related to the safety of the hull is placed should not be adjacent to the hazardous area. In addition, the same kind of tank and space (chamber) can also be applied to the first and second separation sections.
本実施形態では、第１分離区画としてコファダムおよびカーゴポンプ室を例に説明したが、第１分離区画としては、コファダム、燃料タンク、ポンプ室、バラストタンク等の区画を採用することができる。また、本実施形態では、第２分離区画としてフォアピークタンクおよびコファダムを例に説明したが、第２分離区画としては、コファダム、燃料タンク、ポンプ室、バラストタンク、清水タンク等の区画を採用することができる。
In the present embodiment, the cofferdam and the cargo pump chamber have been described as examples of the first separation section. However, as the first separation section, a section such as a cofadam, a fuel tank, a pump chamber, and a ballast tank can be employed. In the present embodiment, the fore peak tank and the cofferdam are described as examples of the second separation section. However, a section such as a cofadam, a fuel tank, a pump chamber, a ballast tank, and a fresh water tank is employed as the second separation section. be able to.
なお、本実施形態のように、第１分離区画にコファダムが採用される場合には、イナートガス封入装置、ガス検知器、浸水警報装置、排水装置のうちの少なくとも１つが第１分離区画内に配置される。また、第１分離区画としてバラストタンクが採用される場合には、イナートガス封入装置、ガス検知器のうちの少なくとも１つが第１分離区画内に配置される。
In addition, when a cofferdam is employed in the first separation section as in the present embodiment, at least one of an inert gas sealing device, a gas detector, a flooding alarm device, and a drainage device is disposed in the first separation section. Is done. When a ballast tank is adopted as the first separation section, at least one of the inert gas sealing device and the gas detector is arranged in the first separation section.
コファダム、バラストタンク、または燃料タンクを第１分離区画または第２分離区画として採用する場合、第１分離区画または第２分離区画の船体長手方向の長さは１．２ｍ以上に設定される。また、例えば危険場所に隣接して配置されるコファダム、バラストタンク、または燃料タンクの船体長手方向の長さも１．２ｍ以上とする。
When adopting a cofferdam, ballast tank, or fuel tank as the first separation section or the second separation section, the length of the first separation section or the second separation section in the longitudinal direction of the hull is set to 1.2 m or more. Also, for example, the length of the cofferdam, ballast tank, or fuel tank arranged adjacent to the hazardous area in the longitudinal direction of the hull is 1.2 m or more.
本実施形態では、船体の安全に関わる機器を設置する区画として、消火ポンプ室を挙げたが、非常用発電機を設置する非常用発電機室など、船体の安全に関わる機器を設置する区画は消火ポンプ室以外も存在する。また、本実施形態ではＦＰＳＯを例に説明を行なったが、本実施形態は、０種危険場所を備え、船体の安全に関わる機器を設置する区画を低コストで配置する必要があるその他の洋上浮体構造物（船舶を含む）にも適用できる。
In the present embodiment, the fire pump room is cited as a section for installing equipment related to the safety of the hull, but a section for installing equipment related to safety of the hull, such as an emergency generator room for installing an emergency generator, is provided. There are other fire extinguishing pump rooms. In this embodiment, FPSO has been described as an example. However, in this embodiment, other offshore areas that have zero-type hazardous areas and need to be provided with low-cost sections for installing equipment related to ship safety. It can also be applied to floating structures (including ships).
１０ 洋上浮体構造物
１２ 船首部
１４ 船体中央部
１６ 船尾部
１８ 貯油タンク
２０ バラストタンク
２４ フォアピークタンク（第２分離区画）
２５ コファダム（第１分離区画）
２６ 消火ポンプ用海水供給ポンプ室
２６Ｐ、４０Ｐ ポンプ
２８ 上甲板
３０ 船首部消火ポンプ室
３０Ｐ 船首部消火ポンプ
３４ カーゴポンプ室（第１分離区画）
３６ 機関室
３６Ｐ 船尾部消火ポンプ
３８ コファダム（第２分離区画）
４６ オフローディングホースリール
４８ 貨物油配管
４８Ｆ 接続フランジ
Ａ 危険場所 DESCRIPTION OFSYMBOLS 10 Offshore floating structure 12 Bow part 14 Hull center part 16 Stern part 18 Oil storage tank 20 Ballast tank 24 Fore peak tank (2nd separation section)
25 Cofferdam (first separation zone)
26 Seawater supply pump room for fire pumps 26P,40P Pump 28 Upper deck 30 Bow fire extinguishing pump room 30P Bow fire extinguishing pump 34 Cargo pump room (first separation section)
36Engine room 36P Stern fire pump 38 Cofferdam (second separation section)
46Offloading hose reel 48 Cargo oil piping 48F Connection flange A Hazardous area
１２ 船首部
１４ 船体中央部
１６ 船尾部
１８ 貯油タンク
２０ バラストタンク
２４ フォアピークタンク（第２分離区画）
２５ コファダム（第１分離区画）
２６ 消火ポンプ用海水供給ポンプ室
２６Ｐ、４０Ｐ ポンプ
２８ 上甲板
３０ 船首部消火ポンプ室
３０Ｐ 船首部消火ポンプ
３４ カーゴポンプ室（第１分離区画）
３６ 機関室
３６Ｐ 船尾部消火ポンプ
３８ コファダム（第２分離区画）
４６ オフローディングホースリール
４８ 貨物油配管
４８Ｆ 接続フランジ
Ａ 危険場所 DESCRIPTION OF
25 Cofferdam (first separation zone)
26 Seawater supply pump room for fire pumps 26P,
36
46
Claims (6)
- ０種危険場所と船体の安全に関わる機器が配置される区画との間を、コファダム、燃料タンク、ポンプ室、バラストタンク、清水タンクの中の同種の重複も含めて少なくとも２つの区画を介して隔てるとともに、前記清水タンクに関しては、前記０種危険場所に隣接させないことを特徴とする洋上浮体構造物。 Between at least two compartments, including co-dams, fuel tanks, pump rooms, ballast tanks, and fresh water tanks, between the zero-hazardous location and the compartment where the hull safety equipment is located An offshore floating structure characterized in that, while being separated, the fresh water tank is not adjacent to the zero-type hazardous area.
- 前記０種危険場所が貯油タンクであることを特徴とする請求項１に記載の洋上浮体構造物。 The offshore floating structure according to claim 1, wherein the zero-type hazardous area is an oil storage tank.
- 前記０種危険場所と前記船体の安全に関わる機器が配置される区画との間において、前記コファダムが前記０種危険場所に隣接して配置される場合、前記コファダムには、イナートガス封入装置、ガス検知器、浸水警報装置、排水装置のうちの少なくとも１つが配置されることを特徴とする請求項１または請求項２に記載の洋上浮体構造物。 When the cofferdam is disposed adjacent to the zero-type hazardous area between the zero-class hazardous area and a section where equipment relating to safety of the hull is disposed, the cofferdam includes an inert gas sealing device, a gas The offshore floating structure according to claim 1 or 2, wherein at least one of a detector, an inundation alarm device, and a drainage device is disposed.
- 前記０種危険場所と前記船体の安全に関わる機器が配置される区画との間において、前記バラストタンクが前記０種危険場所に隣接して配置される場合、前記０種危険場所に隣接して配置される前記バラストタンクには、イナートガス封入装置、ガス検知器のうちの少なくとも１つが配置されることを特徴とする請求項１～請求項３の何れか一項に記載の洋上浮体構造物。 When the ballast tank is arranged adjacent to the zero-type hazardous location between the zero-type hazardous location and the section where the equipment relating to the safety of the hull is arranged, it is adjacent to the zero-type hazardous location. The offshore floating structure according to any one of claims 1 to 3, wherein at least one of an inert gas sealing device and a gas detector is arranged in the arranged ballast tank.
- 危険場所に隣接して配置される前記コファダム、前記バラストタンク、または前記燃料タンクの船体長手方向の長さは、１．２ｍ以上であることを特徴とする請求項１～４の何れか一項に記載の洋上浮体構造物。 The length in the longitudinal direction of the hull of the cofferdam, the ballast tank, or the fuel tank arranged adjacent to a hazardous area is 1.2 m or more. The offshore floating structure described in 1.
- １種または２種危険場所と船体の安全に関わる機器が配置される区画との間を、コファダム、燃料タンク、ポンプ室、バラストタンク、清水タンクの中の少なくとも１つの区画を介して隔てることを特徴とする請求項１～５の何れか一項に記載の洋上浮体構造物。 Separating one or two hazardous locations from the compartment where the equipment related to the safety of the hull is located via at least one of the cofferdam, fuel tank, pump room, ballast tank, and fresh water tank The offshore floating structure according to any one of claims 1 to 5, wherein
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| JP2018086996A JP2019189172A (en) | 2018-04-27 | 2018-04-27 | Offshore floating body structure |
| JP2018-086996 | 2018-04-27 |
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| WO2019208550A1 true WO2019208550A1 (en) | 2019-10-31 |
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| CN113460225A (en) * | 2021-07-21 | 2021-10-01 | 上海外高桥造船有限公司 | Oil tanker with emergency fire pump |
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| JPH06298171A (en) * | 1993-04-19 | 1994-10-25 | Hitachi Zosen Corp | Inert gas injection equipment to ballast tank on cargo transport ship |
| JP2009061823A (en) * | 2007-09-04 | 2009-03-26 | Shin Kurushima Dockyard Co Ltd | Apparatus and method for filling/replacing inert gas in ballast tank of liquid tanker |
| US20100116726A1 (en) * | 2007-04-02 | 2010-05-13 | David Dwek | Effluent discharge |
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| JP2015016861A (en) * | 2009-10-16 | 2015-01-29 | デウ シップビルディング アンド マリーン エンジニアリング カンパニー リミテッド | Floating structure with fuel tank for gas fuel |
| CN205396515U (en) * | 2016-03-08 | 2016-07-27 | 上海船舶研究设计院 | A collision bulkhead that is used for ventilation function that takes of small -size LNG transport ship |
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2018
- 2018-04-27 JP JP2018086996A patent/JP2019189172A/en active Pending
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- 2019-04-23 WO PCT/JP2019/017165 patent/WO2019208550A1/en active Application Filing
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| JPH06298171A (en) * | 1993-04-19 | 1994-10-25 | Hitachi Zosen Corp | Inert gas injection equipment to ballast tank on cargo transport ship |
| US20100116726A1 (en) * | 2007-04-02 | 2010-05-13 | David Dwek | Effluent discharge |
| JP2009061823A (en) * | 2007-09-04 | 2009-03-26 | Shin Kurushima Dockyard Co Ltd | Apparatus and method for filling/replacing inert gas in ballast tank of liquid tanker |
| JP2015016861A (en) * | 2009-10-16 | 2015-01-29 | デウ シップビルディング アンド マリーン エンジニアリング カンパニー リミテッド | Floating structure with fuel tank for gas fuel |
| JP2011207364A (en) * | 2010-03-30 | 2011-10-20 | Mitsui Eng & Shipbuild Co Ltd | SHIP EQUIPPED WITH NOx REDUCING DEVICE |
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