KR20130120127A - Marine nuclear power plant and installation method of it - Google Patents

Abstract

Disclosed are a marine nuclear power plant and a construction method thereof. The marine nuclear power plant of the present invention includes facilities including a nuclear reactor building; a barge in which the facilities are mounted; and a gravity based structure (GBS) plant in which the barge is installed. The GBS plant is installed on the bottom of the ocean by moving to the ocean and the upper side is exposed above a sea level.

Description

MARINE NUCLEAR POWER PLANT AND INSTALLATION METHOD OF IT [0001]

The present invention relates to a marine nuclear power plant and a method of constructing the same. More particularly, the present invention relates to a marine nuclear power plant capable of installing onshore nuclear power plants using GBS and pants, and a construction method thereof.

A power plant is equipped with a prime mover, a generator, and an attached machine to generate electric power. It converts a flow of energy by a certain fuel into mechanical energy and then produces a converted electric power by using an electromagnetic induction phenomenon ) Facility.

Power plants are classified into hydroelectric power plants, thermal power plants, nuclear power plants, and wind power plants depending on the type of resources or fuels generating energy.

Generally, a hydroelectric power plant is a system that obtains electricity by turning aberrations with a potential energy when a high water falls to a low place. In a thermal power plant, a fuel such as coal, heavy oil or gas (GAS) , A steam turbine with high pressure steam is used to obtain electricity. Nuclear power plants use electric energy from nuclear power to obtain electric energy. Wind power plants use wind power or kinetic energy to turn windmills and windmills It is the way to get electric energy by force.

In the case of generating electricity using natural or artificial fuels among the above-mentioned methods, there is a problem that the amount of fuel required for the power plant is very large, and thus it takes a lot of time and cost for transportation and storage. Or nuclear fuels.

The use of nuclear fuels in power plants has the advantage of improving the amount of fuel, the number of times and the number of times of transportation required because it can be developed in small quantities for a long time, but the problems such as radioactivity and disposal of nuclear waste still remain .

Nuclear power plant facilities require facilities and sites with a certain volume and area to generate energy and generate electricity from the generated energy. In order to ensure safety, the power plant is replaced or maintained Repair and so on.

Since these nuclear power plants can not be moved once they are built on the ground, it is necessary to select the site or site (SITE) of the power plant early in consideration of the surrounding environment and infrastructure.

Generally, it takes about 7 years to construct a nuclear power plant, 30 to 40 years for a usable life span, a spent nuclear power plant facility must be disposed of, and a new facility must be reconstructed Therefore, there is a problem that it takes much time and cost.

If nuclear fuel used in nuclear power plants and used nuclear waste are exposed to the air in an unguarded state, they are very poisonous and should be safely managed and isolated because they cause long-term devastation and damage to human life.

Generally, in the case of a thermal power plant including a nuclear power plant, a large amount of water is used in order to cool the water vapor used in the power generation and the power generation because the generator is rotated by rotating the turbine by the high- There are relatively many cases where water or water is supplied in a smooth place.

Nuclear power generation has been attracting attention as an alternative to fossil fuels, which have been exhausted due to the acceleration of industrial development and are soaring in price. However, as the Fukushima Nuclear Power Plant accident occurred in the recent earthquake in Tohoku region of Japan, It reminded mankind that disaster prevention measures should be thorough.

Normally, onshore nuclear power plants constructed breakwater to cope with the tsunami and built a nuclear power plant in a higher area than the sea level. However, the breakwater and construction site of the large tsunami caused by the Great East Japan Earthquake were also useless.

That is, immediately after the nuclear power plant was flooded with the tsunami, the reactor safety system and the emergency generator became inoperable, causing the accidental leakage of radioactivity.

Therefore, nuclear power plants have been researched and developed on the basis of the above-mentioned viewpoint, which is installed on the sea where the influence of earthquake and tsunami is relatively small.

However, the nuclear power plant is not only bulky and heavy, but also has a very large site to be installed. In order to construct a nuclear power plant on the sea, There have been a lot of economical and technological constraints.

Disclosure of the Invention The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a marine nuclear power plant which is easy to install and construct in the marine which is not restricted by a plant installation site, and which can actively respond by using abundant seawater in case of fire or earthquake A power plant and a construction method thereof.

According to an aspect of the invention, there is provided a facility comprising a reactor building; A barge on which the facility is mounted; And a GBS (Gravity Based Structure) plant in which the trousers are installed. The GBS plant is moved to the sea and installed on the seabed, wherein the upper region is exposed above sea level.

The facility includes a complex building electrically connected to the reactor building; An auxiliary building electrically connected to the reactor building; And a turbine building electrically connected to the reactor building.

A gate that can be opened and closed can be provided on one side wall of the GBS plant.

The GBS plant includes: a support facility electrically or mechanically connected to the facility; And a docking station capable of loading and unloading a replacement fuel carrier or a waste carrier.

According to another embodiment of the present invention, a gravity base structure (hereinafter, referred to as 'GBS') surrounded by barrier ribs is installed on the ocean at a first stage; A second step of introducing seawater into the GBS by opening a gate provided on a partition wall of the partition; A third step of moving a barge equipped with a facility including a reactor and a generator to the inside of the GBS and placing the barge on the bottom of the GBS; And a fourth step of closing the gate and discharging the seawater introduced into the GBS to the outside.

The fourth step may further include a power generation preparation step of performing electrical connection and piping connection between the support facility provided inside the bulkhead of the GBS and the facilities of the trousers after the seawater is discharged.

Further, according to another embodiment of the present invention, a gravity base structure (hereinafter, referred to as 'GBS') is installed in the ocean to introduce seawater into the ocean, and a barge equipped with facilities including a reactor and a generator, Is placed on the GBS, and then the inflowed seawater is discharged. A method of constructing a marine nuclear power plant can be provided.

According to the present invention having the above-described configuration, the following effects can be achieved.

First of all, the present invention is relatively less affected by earthquakes and tsunamis because GBS and pants are installed in the ocean far from the coast.

Therefore, the present invention has no difficulty in site selection as compared with the existing onshore nuclear power plant, which has difficulty in selecting the site due to the Nimosis phenomenon.

The present invention can utilize seawater as an abundant cooling water in an emergency by using a gate that is openably and closably attached to the GBS, thereby positively responding to emergencies and enhancing safety.

In addition, the present invention can arrange various support facilities including an emergency diesel generator in a watertight concrete GBS to prevent an emergency power loss accident caused by inundation.

1 is a schematic view of a marine nuclear power plant according to an embodiment of the present invention.
2 is a view schematically showing a gate provided in a GBS plant in the marine nuclear power plant shown in Fig.
3 is a flowchart illustrating a method of constructing a marine nuclear power plant according to another embodiment of the present invention.

In order to fully understand the present invention, operational advantages of the present invention, and objects achieved by the practice of the present invention, reference should be made to the accompanying drawings and the accompanying drawings which illustrate preferred embodiments of the present invention.

Hereinafter, the present invention will be described in detail with reference to the preferred embodiments of the present invention with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

FIG. 1 is a view schematically showing a marine nuclear power plant according to an embodiment of the present invention, and FIG. 2 is a view schematically showing a gate provided in a GBS plant in the marine nuclear power plant shown in FIG.

As shown in these drawings, the marine nuclear power plant 1 according to the present embodiment includes a facility 100 including a nuclear reactor building 110, a barge 200 on which the facility 100 is installed, And a GBS (Gravity Based Structure) plant 300, which is accommodated in the pants 200 and installed on the sea floor.

As shown in FIG. 1, the facility 100 includes a reactor building 110 that is powered by nuclear fuel, a secondary auxiliary building (not shown) in the current nuclear power plant building, (120) which combines the functions of an access control building (not shown) and a radioactive treatment building (Radwaste Building, not shown), an auxiliary building consisting of structural steel and reinforced concrete and supported by a reinforced concrete mat foundation A turbine 130, a turbine and generator subassemblies, and the turbine and generator include a turbine building 140 supported in a concrete structure.

The facility 100 may further include a replenishing tank 150 in which replenishment water, H ₂ , N ₂ , CO ₂ and the like are stored.

The pants 200 are mounted on the bottom surface of a GBS plant 300 which will be described later on which various types of facilities 100 constituting the marine nuclear power generation plant 1 are mounted. It is floated on the sea and can be operated by a vessel such as a tugboat.

In this embodiment, the trousers 200 may be made of a steel material so as to reduce the load to facilitate transportation, and may have a ballast structure inside the trousers 200 to float at sea.

The pants 200 transferred to the GBS plant 300 drain the seawater introduced into the GBS plant 300 to the outside of the GBS plant 300 when the pants 200 are moved to the inside of the GBS plant 300 To the inner bottom of the GBS plant (300).

As shown in FIG. 2, the GBS plant 300 is surrounded by four side walls, and a gate 310 is installed on one side of the bulkhead to open and close the space to provide a space where the pants 200 are seated, (M) are floating on the sea and can be operated by vessels such as tugboats.

In this embodiment, the GBS plant 300 provides a space in which the pants 200 are seated as described above, and can be made of a concrete material so as to maintain the seawater resistance and maintain durability against earthquakes and tsunamis.

And the GBS plant 300 may be installed on the seabed so that a part of the upper side portion is exposed to sea level.

1, the GBS plant 300 includes a support facility 320 electrically or mechanically connected to the facility 100 and a support facility 320 connected to the facility 100 through a support facility 320 for connecting a replacement fuel carrier or a waste carrier, (330).

1, the support facility 320 of the GBS plant 300 includes a boiler automatic combustion control diesel generator 321, an auxiliary Diesel Generator (ACC D / G) 321, an auxiliary boiler zone 322, A boiler water, a condensate and a fresh water storage tank 333, a digestion pump chamber and an upper and a wastewater treatment zone 334, a sanitary water treatment facility zone 335, a primary boiler fuel tank 322 ' The CCW heat exchanger building 336 and the main service water intake structure 337 and the substation 338 and the secondary equipment maintenance workshop 339, Cold Machine Shop).

3 is a flowchart illustrating a method of constructing a marine nuclear power plant according to another embodiment of the present invention.

3, the GBS plant 300 is installed in the ocean, the seawater is introduced into the sea, and the pants 200 on which the facility 100 including the reactor and the generator are mounted is installed in the GBS plant 300 and then discharging the inflowing seawater to seat the pants 200 on which the facility 100 is mounted on the GBS plant 300. [

The construction method of the marine nuclear power plant according to the present embodiment will be described in detail in order.

First, the operator installs the GBS plant 300 surrounded by the bulkheads on the ocean in the first step S1.

Thereafter, in the second step S2, the operator opens the gate 310 provided on one of the partitions to introduce the seawater into the GBS plant 300.

Subsequently, in the third step S3, the worker moves the pants 200 on which the facilities 100 including the reactor and the generator are mounted to the inside of the GBS plant 300. [

Finally, the operator closes the gate 310 in the fourth step S4 and discharges the seawater introduced into the GBS plant 300 to the outside, thereby placing the pants 200 on the GBS plant 300 The construction of the marine nuclear power plant is completed.

Here, after the seawater is discharged, the power generation preparation process for performing the electrical connection and piping connection between the support facility for power generation assistance 320 provided inside the GBS plant 300 and the facility 100 is further performed, It is possible to operate the nuclear power plant.

As described above, the present invention is advantageous in that it is easy to install and construct in the marine environment that is not restricted by the plant installation site, and can cope positively by using abundant seawater in case of fire or earthquake.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Accordingly, such modifications or variations are intended to fall within the scope of the appended claims.

1: Marine Nuclear Power Plant 100: Facility
110: Reactor building 120: Composite building
130: auxiliary building 140: turbine building
150: Supplementary tank 200: Pants
300: GBS plant 310: Gate
320: Support Facility 330: Facing Facility

Claims (7)

Facilities including reactor buildings;
A barge on which the facility is mounted; And
And a GBS (Gravity Based Structure) plant in which the trousers are installed,
Wherein the GBS plant is moved to the sea and installed on the seabed while the upper region is exposed above sea level. The method according to claim 1,
The facility includes:
A composite building electrically connected to said reactor building;
An auxiliary building electrically connected to the reactor building; And
And a turbine building electrically connected to the reactor building. The method according to claim 1,
Wherein a gate capable of opening and closing is provided on one side wall of the GBS plant. The method of claim 3,
In the GBS plant,
A support facility electrically or mechanically connected to the facility; And
A marine nuclear power plant further comprising a docking station capable of unloading a replacement fuel carrier or waste carrier. A first step of installing a gravity base structure (hereinafter, referred to as "GBS") on the ocean, which is surrounded by barrier walls;
A second step of introducing seawater into the GBS by opening a gate provided on a partition wall of the partition;
A third step of moving a barge equipped with a facility including a reactor and a generator to the inside of the GBS and placing the barge on the bottom of the GBS;
And a fourth step of closing the gate and discharging the seawater introduced into the GBS to the outside. The method of claim 5,
In the fourth step,
Further comprising a power generation preparation step of performing electrical connection and pipeline connection between a supporting facility provided inside the bulkhead of the GBS and facilities of the pants after the seawater is discharged. A gravity base structure (hereinafter, referred to as 'GBS') was installed in the ocean, and seawater was introduced into the ocean. A barge equipped with facilities including a reactor and a generator was placed on the GBS, Wherein said method comprises the steps of:

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