JPS5835914B2 - Nuclear-powered ship service base - Google Patents

Description

[Detailed description of the invention] The present invention relates to a service base for nuclear powered ships.

In general, nuclear-powered ships have a variety of problems due to their unique structure, including various services such as fuel exchange, loading/unloading and disposal of waste, inspection of the onboard nuclear reactor, and maintenance and inspection of the hull. It is.

The purpose of this invention is to provide a system that can be installed offshore very easily and stably on the seabed, and in which various service facilities for nuclear-powered ships are arranged rationally, making it extremely suitable for performing various services such as refueling at sea. It is convenient for
In addition, because nuclear-powered ships can be moored very stably, various services can be received extremely safely.
The object of the present invention is to provide a service base for nuclear-powered ships that can solve the above-mentioned problems specific to nuclear-powered ships, has a simple structure, and can be constructed easily and inexpensively.

This invention will be described below with reference to embodiments shown in the drawings.

In the drawing, reference numeral 11 denotes a service base for nuclear-powered ships according to the present invention, which is installed offshore on the seabed 5, and this service base 11 is composed of a large floating structure 1 equipped with service equipment for nuclear-powered ships and a ballast tank 6. ing.

The large floating structure 1 has a nuclear ship accommodation recess 2,
With this in the middle, a substantially box-shaped main part 1a and a substantially box-shaped sub-part 1b.
The first end portions of both are connected to each other by a connecting portion 1c, and have a substantially U-shape when viewed from above.

The nuclear-powered ship service base 11 is constructed as follows.

That is, a large floating structure 1 that is equipped with a nuclear-powered ship service facility and a ballast tank 6 and has a nuclear-powered ship accommodation recess 2 is built in advance at a shipyard on land, and the built floating structure 1 is As shown in the figure, after being floated on the sea and towed to a predetermined service base construction location such as above a bay ditch, there the ballast tank 6 is filled with water as shown in Figures 2 to 4. The floating structure 1 is constructed by inserting ballast 3 such as the above, causing the floating structure 1 to sink, and then installing the floating structure 1 on the seabed 5 with the necessary parts exposed above the sea surface.

The service base 11 constructed in this way is very stable because it is installed on the seabed, and the nuclear ship 4 is installed in the service base 11 through the opening at one end of the accommodation recess 2. By being introduced and moored, this nuclear powered ship 4 can be accommodated very stably, and the nuclear powered ship 4 will not be subjected to so-called transverse waves.

Note that after the nuclear powered ship 4 is housed in the recess 2, the open end of the recess 2 is closed, for example, by a gate (not shown).

In this way, the nuclear-powered ship 4 can receive various services such as fuel exchange, loading/unloading and disposal of waste, inspection of the onboard nuclear reactor, and maintenance inspection of the hull in a stable condition at sea in an extremely safe manner. be able to.

The service base 11 is made of materials such as steel and concrete to maintain the necessary strength, watertightness, durability, and weight.

The self-weight and amount of ballast of the large floating structure 1 constituting the service base 11 are appropriately selected, and its installation is made so that the service base 11 can be stabilized while the nuclear ship 4 is moored and depending on the sea conditions at the location. Make it.

Note that the ballast to be put in the ballast tank 6 is not limited to water, but other ballasts such as stone and iron can be used.

In addition, in order to prevent the seabed 5 near the lower edge of the service base 11 from being gouged by the flow of seawater, a protruding piece with a right triangular cross section is installed in advance on the lower edge of the floating structure 1 with its oblique side facing upward. It is preferable to keep it fixed.

The various nuclear-powered ship service facilities listed above are located at Service Base 1.
It is equipped in advance when constructing a large floating structure 1 to be constructed as a floating structure 1.

The main ones are listed below.

In addition, most of these service facilities are floating structures 1
It is provided in the main part 1a of the.

■ Mooring equipment (4) Nuclear ship mooring equipment: 12 winches, 13 bollards
, buoys, fenders 14, etc.

(B) Material supply ship mooring equipment: 15 winches, 1 bollard
6. Buoys, fenders 17, etc.

(C) Work boat mooring equipment: davits, winches, bollards, etc.

(D) Lifeboat mooring equipment (not shown) ■ Crane (D) A dual-travel crane for refueling, which can also be used for other tasks.

(P auxiliary lane: Small crane vehicle (not shown) ■ Fuel exchange equipment (■ Fuel exchange equipment ■ New fuel storage equipment (I) Spent fuel storage equipment (J) Anti-staining equipment (not shown) ■ Waste treatment Equipment Gaseous, liquid and solid waste treatment equipment (I,) Liquid and solid waste storage equipment M Waste transfer equipment from nuclear-powered ships (not shown) Radiation control equipment (not shown) N Measuring equipment, analysis equipment, Monitoring equipment, etc.

■ Inspection equipment (0) Nuclear ship inspection equipment, etc. ■ Accommodation equipment (P) Accommodation equipment for base personnel, inspection personnel, ship crew, etc. ■ Power generation/utility equipment (Q1 Power generation/distribution equipment (regular use/emergency use) (R) Hot water/water supply equipment (regular/emergency) (not shown) (S
) Distribution equipment for fuel oil, food, etc. (not shown) (T) Fresh water tank U) Fuel tank ■ Communication/signal equipment (not shown) (7) Radio telephone equipment (for ships, land, and aircraft) W lights Signal equipment (including surrounding buoys) X Fire extinguishing and safety equipment (equipment) Collision prevention equipment: Buoys, radar 18, etc.

(1) Two bases of fire extinguishing equipment and fire boats for nuclear ships (not shown) Book) Lifesaving equipment 2' lifeboats, buoys, etc. (not shown).

Note that supplies of materials to the service base 11 are carried out by general supply ships when necessary.

Furthermore, since the workers other than the management personnel at the base 11 will stay only for the period necessary for the work, their transportation will be carried out by, for example, a helicopter or a transportation boat.

As described above, the service base for nuclear powered ships according to the present invention has a substantially box-shaped wide main part 1a and a substantially box-shaped narrow sub-part 1b.
and a substantially box-shaped connecting part 1c that connects one end of the two together, and a large substantially U-shaped vessel that is long when viewed from the plane and has a nuclear-powered ship accommodation recess 2 formed between the main part 1a and the sub-part 1b. It is composed of a floating structure 1, and a fuel exchange crane E is provided on the upper edge of the deck near the nuclear ship accommodation recess 2 of the main part 1a, and a fuel exchange equipment G and a waste disposal equipment are installed on the deck of the main part 1a. In addition, a new fuel storage facility H, a used fuel storage facility ■, and a waste storage facility R are provided below the deck of the main part 1a, and the fuel exchange facility G is
Connecting parts 1 on the deck of the main part 1a are provided to correspond to the waste treatment equipment and are located below these respectively.
Nuclear-powered ship inspection equipment O and accommodation equipment P are installed in the part closer to c, and these equipment 0. A power generation and distribution facility Q is installed on the deck of the main section 1a between P and the above waste treatment facility, and a fresh water tank T is installed below the deck of the main section 1a between the nuclear ship inspection facility O and the residence. A fuel tank U is provided below the deck of the main part 1a, and a fuel tank U is provided below the power generation/distribution facility Q.
The main part 1a, the sub part 1b, and the connecting part 1c are provided with ballast tanks 6, and can be installed very easily and stably on the seabed offshore, and can be installed in a variety of ways. Nuclear-powered ship service facilities are rationally arranged, making it very convenient to perform various services at sea, such as fuel exchange, loading and unloading of waste and its treatment, inspection of the onboard nuclear reactor, and maintenance and inspection of the ship's hull. Moreover, since the nuclear-powered ship 4 can be moored very stably, it is possible to receive the various services mentioned above extremely safely, and it is said that it is possible to solve problems specific to nuclear-powered ships, such as radiation. It has a special effect.

Moreover, the nuclear ship service base is constituted by a large floating structure 1 consisting of a substantially box-shaped main part 1a, a substantially box-shaped sub-part 1b, and a substantially box-shaped connecting part 1c that connects one end of both parts. The wide main part 1a is equipped with the above-mentioned service facilities for nuclear ships, and the narrow sub part 1b only serves as a breakwater, so the structure as a whole is very simple. Therefore, its construction can be done easily and inexpensively.

[Brief explanation of drawings]

Figure 1 is a side view of a large floating structure being towed;
The figure is a side view of a service base showing an embodiment of the present invention, FIG. 3 is a plan view thereof, and FIG. 4 is a rear view thereof. 1...Large floating structure, 1a...Main part, 1b...Subpart, 1c...Connection part, 2
...Nuclear ship accommodation recess, 4...Nuclear ship, 5...Undersea, 6...Ballast tank, 11...Nuclear power Ship service base.

Claims (1)

[Claims] 1 A substantially box-shaped wide main part 1a and a substantially box-shaped narrow width sub-part 1b
and a substantially box-shaped connecting part 1c that connects one end of the two together, and a large substantially U-shaped vessel that is long when viewed from the plane and has a nuclear-powered ship accommodation recess 2 formed between the main part 1a and the sub-part 1b. It is composed of a floating structure 1, and a fuel exchange crane E is provided on the upper edge of the deck near the nuclear ship accommodation recess 2 of the main part 1a, and a fuel exchange equipment G and a waste disposal equipment are installed on the deck of the main part 1a. In addition, a new fuel storage facility H, a used fuel storage facility ■, and a waste storage facility R are provided below the deck of the main part 1a, and the fuel exchange facility G is
Connecting parts 1 on the deck of the main part 1a are provided to correspond to the waste treatment equipment and are located below these respectively.
Nuclear ship inspection equipment O and accommodation equipment P are installed in the part closer to c, and power generation and distribution equipment Q is installed in the part on the deck of the main part 1a between these equipment O2P and the above waste treatment equipment. A fresh water tank T is provided below the deck of the main section 1a so as to be located below the nuclear ship inspection facility O and accommodation facility P, and a fuel tank U is provided below the deck of the main section 1a. It is installed so as to be located below the power distribution equipment Q,
A service base for a nuclear powered ship, characterized in that ballast tanks 6 are provided in a main part 1a, a sub part 1b, and a connecting part 1c.