JPH10259673A - Constructing method for plant facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To establish a constructing method for plant facilities which is capable of decreasing the unit costs of construction by shortening the period required to carry out the works of constructing the plant facilities. SOLUTION: A caisson structure 203 is installed in a construction site for plant facilities, and the excavation works are conducted under the caisson structure 203. In parallel with the excavation works, the construction works for a base 207, works for a house to accommodate the plant facilities, and installation works for the facilities are conducted over the caisson structure 203, and together with the structure on the oversurface the caisson structure 203 is sunk to the specified depth in association with the progress of the excavation works.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing plant equipment, and more particularly to a method for constructing plant equipment capable of shortening the construction period.

More specifically, the present invention relates to power generation equipment, air conditioning equipment,
Living infrastructure such as miscellaneous wastewater treatment facilities will be installed in the basement of the building, and excavation work, building construction work, installation of equipment and pipes, and electrical work will be conducted in parallel to shorten the construction work period of plant facilities that will make effective use of the site. It relates to the construction method of making work.

[0003]

2. Description of the Related Art In recent years, the demand for maximum power in Japan has been increasing, and this trend is expected to continue in the future. A major factor driving the maximum power is the spread of cooling equipment used in homes and offices, and the ratio has reached about 40%.

The power demand fluctuates greatly between day and night, weekdays, holidays, and seasons, and corresponds to the maximum power demand in oil-fired power generation and LNG-fired power generation. Therefore, measures have been taken to reduce the emission of pollutants such as nitrogen oxides, carbon dioxide, and sulfur oxides, but it is impossible to reduce the emission to zero in terms of cost.

[0005] Therefore, nuclear power generation with a low power generation cost and no emission of pollutants is operated at a maximum and constant output, and the power generated at night is stored in a power demanding area in the form of heat or electricity, and the power demand is reduced. Efforts are being made to address the disparity between day and night, to prevent the emission of pollutants and improve the efficiency of the use of power generation equipment, and to promote energy conservation.

As an example of energy saving measures, a hot water / cold water heat storage tank and a heat recovery type heat pump are provided at a disaster prevention type heat supply center as a disaster prevention type district cooling and heating, and are used as heat supply waste heat recycling, emergency digestion water and miscellaneous water. Plans are underway. Also, as a community infrastructure type district heating and cooling system, both a heat plant and each building that uses heat have a heat storage tank with an optimal capacity, and a disaster prevention city with economic efficiency and disaster prevention has been proposed.

When these systems are to be constructed in a large city, a living infrastructure such as a power generation facility, a heating / cooling facility, a garbage / miscellaneous wastewater treatment facility, etc. is provided at the bottom of the basement of a high-rise building to effectively utilize the space. It is necessary to plan.

[0008] In the construction of a high-rise building, as the underground building becomes larger and deeper, the ground work and the underground work are performed in parallel on the first floor, so that the construction period can be rationally and safely performed. A reverse driving method (reverse winding method) that can reduce the length is used. With the reverse construction method, excavation and construction of the skeleton are repeated sequentially from the upper floor to the lower floor while using the building main body as a mountain retaining support without providing a temporary cutting beam support in the construction of the underground skeleton It is a construction method.

[0009] Several major construction companies have been working on the development of an "automatic construction system" for the entire building construction, and characteristic systems have been constructed respectively.

[0010] There has been technically proven a construction method of assembling the building on each floor in the assembling plant (construction apparatus) for the top floor pre-assembled on the ground while sequentially assembling the frames on each floor. This construction device also serves as an all-weather cover for the assembling work floor, and its effects have been proven, a safe and comfortable work space has been secured, and work has not been stopped due to rain or wind speed, thereby improving work efficiency. Although this method is incompatible with the use of large tower cranes, the connection and transit between vertical and horizontal transport of components has also been resolved, and the need for assembling components has been greatly reduced by running multiple transport vehicles simultaneously. It has the effect of doing.

[0011] A caisson is called a caisson, in which a cylindrical base body is constructed on the ground, and the ground is excavated in the cylinder near the lower end thereof, whereby the base body is mainly sunk by its own weight. There is a pneumatic caisson method in which groundwater is removed by compressed air using this method, and work is performed while ensuring work surface safety. Utilization of underground space has become active, and the tendency of caisson construction to become larger and deeper has become stronger, making it difficult for workers to work under high-pressure air. For this reason, unmanned drilling systems have been developed. However, there is no manned work in the work room due to the rigging, maintenance, dismantling and collection of excavators.

Examples of application of the large caisson method include foundation work for bridges and foundations for buildings, but no building has been constructed thereon.

On the lowermost base of the basement of the building, a living infrastructure such as a power generation facility, a cooling / heating facility, a garbage / miscellaneous wastewater treatment facility is first installed, and the ground work and the underground work are performed in parallel on the first floor. It is desired to improve the construction method so that the construction can be performed in a short time, and to shorten the construction period of the building.

In the construction of a light water-cooled nuclear power plant, a rock is first excavated, a central mat and an outer peripheral mat are provided on the rock, and a reactor containment vessel (RCCV) is placed on each of the mats. Next, a reactor exterior vessel will be provided, and a reactor pressure vessel (RPV) and a piping system will be installed inside the reactor containment vessel, and equipment and a piping system will be installed around the building exterior. When these works are completed, a system test, fuel loading, and start-up test are performed, and commercial operation starts.

FIG. 38 shows an improved boiling water reactor (ABW).
38 shows an example of a construction work process diagram in the construction plan of R). As shown in FIG. 38, the work period from the start of construction to the start of commercial operation is planned to be 60 months.

On the other hand, for example, the construction period of a gas turbine combined power plant is about 36 months, which is shorter than the construction period of a nuclear power plant by 60 months by about 24 months.

In recent years, progress in semiconductor technology has been very rapid, and ultra-compact and high-performance computers have become available at relatively low prices, and the transmission of multi-information including video has become easier. The means to expand the abilities of people and provide support are provided at low cost. Furthermore, although it seems that it will take a long time to obtain a robot with the same ability as humans, jigs and tools that provide intelligence to tools and assist the ability of workers have become available. For this reason, the work efficiency can be significantly improved by performing the work in cooperation between the robot and the human.

[0018]

As described above, the construction period of a nuclear power plant is about two years longer than the construction period of a gas turbine combined power plant. Nuclear power plants are becoming disadvantageous in view of economy from other power generation plants such as combined power plants due to loss of profits and the like that may be obtained. Further, the nuclear power plant employs a structure in which the foundation is directly mounted on the rock for the purpose of earthquake countermeasures, so that the period required for excavation work is long, and the cost is increased.

Further, as described above, in the construction of a high-rise building in recent years, in order to cope with an increase in the size and depth of an underground structure, ground work and underground work are performed in parallel on the first floor. By doing so, a reverse driving method (reverse winding method), which can rationally and safely shorten the construction period, is adopted. However, this reverse construction method is difficult to adopt when a reactor containment vessel and a reactor pressure vessel are mounted on a central mat as in a nuclear power plant.

The present invention has been made in view of the various problems described above, and provides a plant equipment construction method capable of shortening the period required for the construction work of the plant equipment and reducing the unit construction cost. The purpose is to do.

[0021]

According to the construction method of a plant facility according to the present invention, a caisson structure is installed at a construction site of the plant facility, and excavation work is performed below the caisson structure. Perform base construction work, plant equipment storage building work and plant equipment installation work above the caisson structure, and sink the caisson structure together with the structure on the upper surface to a predetermined depth according to the progress of excavation by the excavation work. It is characterized by the following.

The construction method of the plant equipment according to the present invention comprises:
The caisson structure is settled down to the bedrock and fixed to the bedrock.

The construction method of the plant equipment according to the present invention comprises:
In fixing the caisson structure to the rock, a groove is formed in the rock along the cutting edge so that the cutting edge and the ceiling of the caisson structure directly contact the rock, and the entire caisson structure is fixed to the rock. It is characterized by doing.

The construction method of the plant equipment according to the present invention comprises:
An airlock chamber with a built-in crane is provided in a through-hole formed in the ceiling of the caisson structure, and the transfer of excavated soil between the lower part and the upper part of the caisson structure is performed through the airlock chamber. Features.

The construction method of the plant equipment according to the present invention comprises:
A plurality of remote work rooms are provided at a construction site of the plant equipment, and the plant equipment is constructed while transmitting video and audio information between the remote work rooms.

The construction method of the plant equipment according to the present invention comprises:
The plant equipment is a nuclear power plant.

The construction method of the plant equipment according to the present invention comprises:
The pile is driven into the bedrock so as to penetrate the caisson structure, the pile and the caisson structure are connected by a slide mechanism, and the caisson structure is settled by the slide mechanism.

The construction method of the plant equipment according to the present invention comprises:
The caisson structure includes a plane caisson on which the base is constructed on an upper surface, and a column caisson having a pneumatic caisson structure, wherein the column caisson sinks the plane caisson.

The construction method of the plant equipment according to the present invention comprises:
The caisson structure is a pneumatic caisson structure.

The construction method of the plant equipment according to the present invention comprises:
A mountain retaining wall is driven into the rock around the installation site of the caisson structure, the caisson structure is supported by the mountain retaining wall, and the caisson structure slides along the mountain retaining wall to settle.

The construction method of the plant equipment according to the present invention is as follows.
A large unit assembly building for assembling a large unit is installed adjacent to the caisson structure installation site, and the upper part of the caisson structure installation site is covered with a roof,
An overhead crane is provided so as to be able to travel from the roof to the inside of the large unit assembly building.

The construction method of the plant equipment according to the present invention comprises:
When the large equipment is installed, at least a part of the roof is released, and the large equipment is suspended from above the roof by a hoist.

The construction method of the plant equipment according to the present invention comprises:
When the assembling and carrying-in work of the large-sized unit is completed, the large-sized unit assembling building is converted into a maintenance building for performing maintenance work of plant equipment.

The construction method of the plant equipment according to the present invention comprises:
A hood for performing various maintenance operations is provided inside the maintenance building, and an imaging device for remotely monitoring the state of the maintenance operation is provided at an appropriate position inside the hood.

The construction method of the plant equipment according to the present invention comprises:
Attach the imaging device to the large unit, and when transporting and assembling the large unit to the installation site, assembling by remote operation while watching the image from the imaging device on the monitor of the remote control room. .

The construction method of the plant equipment according to the present invention comprises:
A monitor is installed not only in the remote operation room but also in the installation site of the large unit so that the operator in the remote operation room and the worker in the installation site can share the video information from the imaging device. It is characterized by the following.

The construction method of the plant equipment according to the present invention comprises:
The imaging device has a stereoscopic camera.

The construction method of the plant equipment according to the present invention comprises:
The imaging device is a CMO having a plurality of CMOS cameras.
An S-group camera is provided, and images in a plurality of directions can be obtained by the CMOS group camera.

The construction method of the plant equipment according to the present invention comprises:
The imaging device includes: an imaging region in which unit cells including photodiodes are arranged in a matrix two-dimensionally on a semiconductor substrate;
Vertical selection means for selecting a readout row of the imaging region;
A plurality of vertical signal lines arranged in a column direction for reading out a detection signal of a photodiode corresponding to a selected row, and a horizontal transistor for sequentially reading out detection signals from these vertical signal lines to a horizontal signal line arranged in a row direction A noise removal circuit that converts a voltage appearing on the vertical signal line into electric charge and subtracts the electric charge in a charge region to suppress noise between the vertical signal line and the horizontal selection transistor. The imaging device is characterized in that:

[0040]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment Hereinafter, a method for constructing plant equipment according to a first embodiment of the present invention will be described.

In the plant equipment construction method according to the present embodiment, a caisson structure is installed at the construction site of the plant equipment, and the base of the plant equipment storage building is installed thereon. Next, as a plant facility, a facility for generating saturated steam by heating water with midnight power and storing the steam, and a steam storage and power generation facility for generating power using the stored saturated steam are installed on a base. Drill below the caisson structure in parallel with the construction of the plant equipment storage building. Then, as the excavation progresses, the caisson structure and the plant equipment storage building thereon are settled together, and when the caisson structure reaches the bedrock, it is fixed to the bedrock.

The steam storage and power generation equipment is equipment for storing midnight power as steam and converting it into electric power at the time of peak power demand in the daytime. The peak power demand can be reduced, and the power transmission equipment and power generation equipment can be used. The size can be suppressed to an optimum scale, and it can contribute to a reduction in power supply cost.

As described above, the plant facility construction method according to the present embodiment relates to the construction method of the steam storage power generation system, and will be described in detail below with reference to FIGS. For convenience of explanation, first, FIGS.
Will be described briefly, and then the procedure of the construction method of the plant equipment according to the present embodiment will be described.

FIG. 1 to FIG. 8 are explanatory diagrams sequentially showing each step of the construction method of the plant equipment according to the present embodiment in chronological order. As the plant equipment, a steam storage and power generation equipment is installed at the base of the plant storage building. The outline of each stage of the plant equipment construction process in the case is shown.

FIG. 1 shows a state in which a digging part 202 for laying a caisson structure 203 (see FIG. 2) on a sedimentary layer 201 at a site where a plant facility is to be constructed has been digged.
As shown in FIG. 1, the remaining soil excavated by the crawler type excavator 216 is put into the transport container 215, the transport container 215 is lifted by the crawler type jib crane 314 installed on the ground surface 233, and is mounted on the transport trolley 218. Transport to

In FIG. 1, reference numeral 358 denotes an integrated remote working room. The integrated remote working room 358 is used in a modified example (described later) of the present embodiment, and a description thereof will be omitted.

FIG. 2 shows that the caisson structure 20
3 shows a state where the push-up device 206 and the construction device 204 which also serves as a roof structure are assembled thereon. An overhead traveling conveyor 217 is attached to the lower surface of the caisson structure 203, and a crawler excavator 216 is placed on the surface of the sedimentary layer 201 of the excavation unit 202.

The caisson structure 203 has a box shape with an open bottom, and the through hole 31 in the ceiling 230 of the caisson structure 203 is provided.
5, a portal crane (not shown) is attached, and the residual soil transport container 215 is passed through the through-hole 3 by the overhead traveling transporter 217.
It can be transported below 15 holes. The transport container 215 lifted by the portal crane through the through hole 315 is mounted on the transport trolley 218 and transported to the remaining soil storage place.

In FIG. 2, reference numeral 359 denotes a ground floor remote working room. This ground floor remote working room 359 is used in a modified example (described later) of this embodiment.
Here, the description is omitted.

FIG. 3 shows a ceiling 230 of the caisson structure 203.
A base 207 and an underground storage building 208 on
The figure shows a state in which the sedimentary layer 201 below the caisson structure 203 is excavated, and the caisson structure 203 is settled to a depth equivalent to the thickness of the base 207. A crane built-in airlock chamber 316 is provided in a through hole 315 (see FIG. 2) of the ceiling 230 of the caisson structure 203.

The transport container 215 containing the excavated residual soil
Is transported onto the base 207 from the excavation unit 202 and the overhead traveling transport device 31 provided on the lower surface of the construction device 204
At 7, the transport container 215 on the base 207 is lifted, mounted on the transport trolley 218 installed on the ground surface 233, and transported to the remaining soil storage place.

The steam storage tank 209 is lifted by the crawler crane 319 installed on the ground surface 233, and the steam storage tank 209 is temporarily installed on the base 207 through the opening 318 opened in the roof of the construction device 204. Then, the vapor storage tank 209 is transported to a predetermined position by a ceiling traveling type transport device 317 provided on the lower surface of the construction device 204 and installed.

The construction device 204 is connected to the push-up device 20
The transportation of the equipment 320 (see FIG. 4), which is raised at 6 to construct the storage building 208 in the underground part, is performed using the overhead traveling transportation device 317 provided on the lower surface of the construction device 204.

In FIG. 3, reference numeral 360 indicates an excavation part remote working chamber, which is used in a modified example (described later) of the present embodiment.
Here, the description is omitted.

FIG. 4 shows that the excavation of the sedimentary layer 201 below the caisson structure 203 progresses and the caisson structure 20 is accordingly excavated.
3, when the upper surface of the base 207 is lower than the ground surface 233, the storage building 20 under construction of the overhang portion of the portal crane 322 installed on the ground surface 233.
8 shows a state in which the transport container 215 containing the excavated soil is hung up and mounted on the transport trolley 218.

FIG. 5 shows that a 213 part of a storage building on the ground is constructed below the push-up device 206, and a push-down device 212 is constructed between the 213 part of the storage building on the ground and the 208 part of the basement building. Excavation of the sedimentary layer 201 below the caisson structure 203 progresses, and the ground floor 219 of the storage building 213 on the ground is settled until the floor 219 is aligned with the ground surface 233.

On the lower surface of the first floor 219, an overhead traveling transfer device 321 is provided. The first floor 219 has an opening 32 for lowering the equipment 320 below.
3 and a portal crane 205 for hanging down is provided above the opening 323.

The equipment 320 suspended on the first basement floor is
It is mounted on a transport trolley 218 running on the floor of the first basement floor, is transferred to the construction location of the storage building 208 underground, and is lifted by the overhead traveling transfer device 321 on the lower surface of the floor 219 on the first floor to lift the storage building 208. Perform construction work. Ground floor 219
Is provided with an opening 324, and the portal crane 2
An opening 325 of the same shape is formed on the same vertical line as the opening 324, and is opened on the floor surface halfway to the base 207. Then, the transport container 215 containing the excavated soil on the base 207 can be lifted by the portal crane 205 onto the transport cart 218 installed on the first floor 219.

In FIG. 5, reference numeral 361 indicates a basement floor remote working room. This basement floor remote working room 361 is used in a modified example (described later) of this embodiment.
Here, the description is omitted.

FIG. 6 shows an excavation situation below the caisson structure 203, an underground storage building 208 below the first floor 219.
Construction of the part, storage building 2 on the ground below the construction device 204
13 shows a state in which the construction of 13 parts has progressed further.

FIG. 7 shows that after the excavation below the caisson structure 203 proceeds and the cutting edge 327 reaches the bedrock 214, a groove 326 is formed in the bedrock 214 along the cutting edge 327, and the caisson structure 203 is settled. , Ceiling (ceiling surface) 230
And the tip of the blade 327 is in contact with the bedrock 214. Concrete is injected between the ceiling (ceiling surface) 230 and the bedrock 214 to eliminate the gap.

When there is a strength member or the like on the lower surface of the caisson structure 203, the groove 328 is also excavated as necessary. The groove 328 is connected to the groove 326, and a through hole 315 (see FIG. 2) penetrates the ceiling 230 in the middle of the groove, so that an excavator or the like can be carried out.

FIG. 8 shows that concrete is poured into the grooves 326 and 328 (see FIG. 7) formed by excavating the rock mass 214 to fix the caisson structure 203 to the rock mass 214, and the storage building 213 on the ground and the storage building underground are shown. This shows a state in which the construction at 208 has also been completed. A cooling tower 220 and an elevator machine room 221 are installed on the roof of the storage building 213 on the ground.

FIG. 9 shows an opening 331 inside the storage building 208 under construction of the overhang portion of the portal crane 322.
And a state where the transport container 215 containing the excavated soil is lifted and mounted on the transport trolley 218.
A track 330 is attached to the portal crane 322, and the crane device 329 runs along the track 330.
Also, the portal crane 322 is fixed by driving a pile into the ground surface 233 with the fixing portion 332.

FIG. 10 shows an airlock 316 attached to a through hole 315 of a base 207, and
17 shows a state in which it is attached below the ceiling 230 of the caisson structure 203 in detail. Also, FIG.
FIG. 11 is a view of the air lock 316 shown in FIG.

The overhead traveling type transporter 217 has a traveling rail 335 attached to the ceiling surface of the caisson structure 203, and traveling wheels 337 of the traveling carriage 341 travel along the traveling rail 335. A slide beam 334 is slidably mounted on the pair of traveling vehicles 341, and a traverse vehicle 340 is mounted on the slide beam 334 so as to be traversable.

A guide rail 342 is provided between the traveling carriages 341.
And the slide device 338 is connected to the slide beam 33.
4 and the slide device 338 is
2 Move up. The hoisting drum 339 fixed to the slide beam 334 performs the traversing and hoisting operation of the traversing carriage 340.

Openings 345, 347 are provided in the air lock 316.
The hoisting device 333 is mounted on the ceiling surface, the transport container 215 is mounted on the lock / combination cradle 344, and is lifted up by the hoisting device 333.
4, the opening 345 is closed. The opening 347 is closed by the slide lock 346, moved in the radial direction to release the engagement with the opening 347, and slid in the circumferential direction along the slide frame structure 349 to open the opening 347, and the transport container is opened. 2
15 is taken out to the receiving base 350 through the opening 347. An air-floating transfer device (not shown) is provided below the transfer container 215.
Is inserted.

The support 348 is connected to the floor of the air lock 316 by a guide pole 343,
Reference numeral 43 guides the lock receiving base 344 to lock the opening 345. Locking support 34 up to support 348
4 is descending, the slide beam 334 of the overhead traveling conveyor 217 extends between the guide poles 343,
The container 215 suspended by the trolley 340 traverses the leading end of the slide beam 334, and the container 215 is lowered onto the lock / receiver 344. Then, the slide beam 334 is shrunk and retracted from the space between the guide poles 343 together with the traversing carriage 340, and the transport container 215 is placed on the lock / combination pedestal 344 to be raised and transferred into the air lock 316.

FIG. 12 shows an overhead traveling type transporter 217 attached to the lower surface of the caisson structure 203, an air lock 316 attached to a through hole 315 (see FIG. 10) of the base 207, and an opening in the floor 219 on the first floor. A portal crane 205 is attached to the section 324, and a route is shown in which the excavated section 202 puts the remaining soil into the transport container 215 and takes it out to the ground surface 233.

Next, the contents of each step of the construction method of the plant equipment according to the present embodiment will be described in detail.

First, as shown in FIG. 1, a crawler-type excavator 216 is used to excavate a hole large enough to bury a caisson structure 203 in a sedimentary layer 201 at a construction site of a plant facility. 215 and the transfer container 215
Is suspended by a jib crane 314 installed on the ground surface 233, mounted on a transport trolley 218, and transported to a remaining soil storage place.

Next, as shown in FIG. 2, the caisson structure 203 is assembled with the excavated hole. Caisson structure 20
The ceiling traveling type transfer device 217 is attached to the lower surface (ceiling surface) of the ceiling portion 230 of FIG. 3, and the transfer container 215 containing the residual soil excavated by the crawler type excavator 216 is transferred to the through hole 315.

A push-up device 206 is mounted on the assembled caisson structure 203, and a building device 204 which also serves as a roof structure is assembled thereon. Construction device 2
The overhead traveling type transporter 317 is attached to the lower surface of the container 04, the transport container 215 is lifted from the excavation unit 202 through the through hole 315, mounted on the transport trolley 218, and transported to the remaining soil storage place.

Next, as shown in FIG. 3, excavation work below the caisson structure 203 and construction work of the base 207 above the caisson structure 203 are performed. Base 207
Is completed, the air lock 316 is inserted into the through hole 315.
(See FIG. 2), and construction of the storage building 208 is started. Further, equipment for injecting high-pressure air is installed below the caisson structure 203. Note that a pile or wall for supporting the caisson structure 203 may be provided instead of the high-pressure air.

The construction equipment of the storage building 208 is the construction equipment 2
The sheet is conveyed by using an overhead traveling type conveyance device 317 that travels on the lower surface of the substrate 04. In addition, the transport container 215 taken out from the excavation unit 202 to the receiving stand 350 (FIG. 10) of the base 207 via the air lock 316 is lifted by the overhead traveling type transport device 317 and is placed on the ground surface 233 outside the storage building 208. It is transported to the installed carrier 218.

In accordance with the construction of the storage building 208, the construction apparatus 204 which also serves as the roof structure is raised by the push-up apparatus 206. When the construction of the storage building 208 progresses and the space between the base 207 and the lower surface of the construction device 204 becomes equal to or larger than the height of the steam storage tank 209 as shown in FIG. 3, an opening 318 is formed in the roof surface of the construction device 204. The steam storage tank 209 and the condenser 211 (FIG.
) And the turbine device 210 (see FIG. 4), and lift the base 20 through the opening 318 in the roof surface of the construction device 204.
Lower to 7.

Then, the equipment such as the vapor storage tank 209 is transported to a predetermined position by using the overhead traveling transporter 317,
Perform installation. When the installation of the device is completed, the opening 318 on the roof surface of the construction device 204 is closed.

The air pressure is adjusted in accordance with the progress of excavation below the caisson structure 203, and the caisson structure 203 and the storage building 208 thereon are lowered by a predetermined amount. The amount of sedimentation is
Perform at about 10 cm / day.

When the excavation below the caisson structure 203 proceeds and the height of the upper surface of the base 207 becomes lower than the height of the ground surface 233 as shown in FIG.
8, a portal crane 322 is installed on the ground surface 233 outside,
The overhang portion of the portal crane 322 is inserted into the storage building 208. Then, the transport container 215 taken out from the excavation unit 202 to the receiving table 350 (see FIG. 10) of the base 207 is lifted by the portal crane 322 and lowered onto the transport vehicle 218 installed on the ground surface 233.

The ceiling above the base 207 where the steam storage tank 209 is installed is constructed, and the storage building 2 above it is constructed.
At the stage where the construction of the 08 part has progressed, the push-down device 21
The second and first floors 219 are constructed below the push-up device 206.

As shown in FIG. 5, the excavation below the caisson structure 203 proceeds, and the height of the floor 219 on the first floor is
3 is settled to the same height as that of the base 20, the portal crane 205 is set on the opening 324 of the floor 219 on the first floor, and the base 20 is set.
7 is lifted through the openings 325 and 324 and is mounted on the transport vehicle 218 installed on the ground surface 233.

The equipment 320 for constructing the underground storage building 208 is transported from the transport trolley 218 which has transported the ground surface 233 by the portal crane 205 installed on the opening 323 of the first floor 219. It is lowered to the floor 218 on the first basement floor via the opening 323 on the floor. The equipment 320 is transported to the underground construction site by the transport trolley 218, and the equipment 320 is lifted by the overhead traveling type transport unit 321 to store the equipment 320 in the basement.
8 Construction work is performed. Thereafter, as shown in FIG. 6, as shown in FIG.
08 is settled down while building, and independently of the underground construction, the push-up device 206 raises the building device 204 to build the storage building 213 on the ground.

Then, as shown in FIG. 7, when the excavation under the caisson structure 203 proceeds and reaches the bedrock 214, the blade 327 of the caisson structure 203 and the caisson structure 203
A groove 326 is dug around the cutting edge 327 so that the ceiling portion (ceiling surface) 230 of the slab contacts the bedrock 214. Excavation is performed so that the support 348 (see FIG. 10) of the air lock 316 enters the groove 326. Concrete is poured into the gap between the ceiling part (ceiling surface) 230 of the caisson structure 203 and the bedrock 214 and fixed. The excavator and the transporter are carried out, concrete is poured into the groove 326, and the caisson structure 203 is fixed.
On the other hand, installation work of equipment for constructing a steam storage power generation system, plumbing work, electric work, and the like are carried out in parallel.

As described above, according to the construction method of the plant equipment according to the present embodiment, the base 207 is constructed on the caisson structure 203, and the installation of the steam storage power generation equipment and the construction of the storage building 208 are performed on the base 207. Excavation under the caisson structure 203 was performed while the construction was being performed, and excavation work to settle the caisson structure 203 and the storage building 208 as the excavation progressed, equipment installation work, and building construction work were performed in parallel. The construction of the plant equipment containing the storage and power generation equipment can be performed in a short period of time, and the use of the funds invested in the construction of the equipment can be expedited, thereby contributing to a reduction in investment funds.

Further, according to the construction method of the plant equipment according to the present embodiment, an airlock chamber 316 with a built-in crane is provided on the ceiling 230 of the caisson structure 203 and the excavation section 20 is provided.
Since the vertical excavation soil is transported between the second excavator 2 and the upper part of the caisson structure 203 through the airlock chamber 316, the excavation residual soil can be transported in a short time. Can be reduced.

In this embodiment, the transfer container 2
Since the amount of vertical movement of the transport container 215 required for loading the air lock 316 into the air lock 316 is minimized, even when the storage capacity of the air lock 316 is only one transport container 215, The transport time of the transport container 215 in the airlock 316 does not increase the construction period.

Modification Next, a construction method of a plant facility according to a modification of the first embodiment will be described with reference to FIGS. 1 to 8 again.

The construction method of the plant equipment according to the present modification includes a general remote operation room 358 shown in FIG. 1, a ground floor remote operation room 359 shown in FIG. 2, an excavation unit remote operation room 360 shown in FIG. The construction is performed by remote work while performing remote monitoring, supervision, and operation using the basement floor remote work room 361 shown in FIG.

As shown in FIG. 1, in the step of excavating the excavation part 202 for installing the caisson structure 203 on the sedimentary layer 201 at the construction site of the plant facility,
33 is provided with an integrated remote working room 358.

As shown in FIG. 2, a caisson structure 203 is assembled in the excavation section 202, and a push-up device 206 and a construction device 204 are assembled thereon.
On the ground floor 04, a ground floor remote working room 359 is installed. The ground floor remote work room 359 takes over from the integrated remote work room 358 for remotely monitoring, supervising, and operating construction work using the overhead traveling transfer device 317 and the like below the construction device 204.

As shown in FIG. 3, the caisson structure 203
The base 207 and the underground storage building 208 are constructed on the ceiling part 230 of the above, and the excavation part remote working room 360 is installed on the base 207. This excavation part remote working room 360
Remote monitoring of excavation work and excavation work at excavation unit 120
The supervision and operation are taken over from the general remote working room 358.

As shown in FIG. 4, the portal crane 322
When removing excavated soil from the base 207 using
Remote monitoring, supervision, and operation are performed from the integrated remote working room 358.

As shown in FIG. 5, a 213 parts of a storage building on the ground is constructed below the push-up device 206, and a push-down device 212 is provided between the 213 parts of the storage building on the ground and the storage building 208 under the ground. Build a caisson structure 2
Excavation of the sedimentary layer 201 below 03 proceeds and the first floor 219 of the storage building 213 on the ground is settled until the floor 219 is aligned with the ground surface, and the basement floor remote work room 361 is installed on the first floor 219. The underground floor remote working room 361 is a central remote working room 35 for remotely monitoring, supervising, and operating construction work using the overhead traveling transfer device 321 and the like below the first floor 219.
Take over from 8.

The operation of transporting the equipment 320 to the underground work site by the portal crane 205 from the opening 323 of the first floor 219 is remotely monitored, supervised, and operated in the underground floor remote work room 361. The work of taking out the transport container 215 from the base 207 by the portal crane 205 from the opening 323 of the floor 219 on the first floor is performed by remote monitoring / operation in the remote working room 360 of the excavation part.
Supervise and operate.

As shown in FIG. 6, when the interior work is performed on the ground floor and the basement floor, remote monitoring, supervision, and operation related to these works are controlled by the remote work room 358.
Do more.

As shown in FIG. 7, when the construction of the ground floor is completed, the ground floor remote working room 159 is moved to the elevator machine room 2.
Change to 21.

As shown in FIG. 8, the caisson structure 203
Is fixed to the bedrock, the excavation part remote working room 360 and the basement floor remote working room 361 are changed to the plant facility operation monitoring room 362 and the plant facility storage building entire infrastructure monitoring room 363, respectively, and the general remote working room 358 is removed. Is done.

Next, the operation of the construction method for plant equipment according to the present modification will be described. In the construction method of the plant equipment according to this modification, a worker who remotely monitors, supervises, and operates the remote control room 358, the remote control room 359 on the ground floor, the remote control room 360 on the excavation part, and the remote control room 361 on the basement floor. The collaborative work is performed while sharing video information between the site and the site workers.

The overhead traveling transfer device 31 of the construction device 204
In the case where the operator of the ground floor remote working room 359 remotely operates the building 7 and moves the building construction equipment to the installation site to perform installation, the direction taken by a plurality of site workers waiting at the installation site is photographed by a television camera. . Then, the captured image and the operator's viewpoint are displayed in a superimposed manner and wirelessly transmitted to be displayed on a large screen of a ground-floor remote work room 359 that remotely controls the overhead traveling transfer device 317 on a multi-screen. The operator of the overhead traveling type transport device 317 remotely controls the transport device while watching what is displayed on the selected large screen or listening to the operation support by the voice of the site worker.

At the same time, a plurality of on-site workers also project the video seen by the on-site worker on their own portable display, and the on-site worker tries to guide the installation work by the other's voice. It understands the intention of the user and gives an instruction for the operation of the overhead traveling transfer device 317 while predicting the influence of the other party on the installation state of the own place. A person who participated in the work at a plurality of sites performs the installation work while checking and checking the video information.

When the push-up device 206 and the push-down device 212 are operated to push up the construction device 204 or settle the caisson structure 203, the image viewed by the worker at the site operating each device is displayed. What is transmitted to the central remote working room 358 via the wireless transmission unit is displayed on the large display of the central remote working room 358 on multiple screens, and the image is displayed.
Gives work instructions while watching. In addition, the image of the operation site in another place is projected on the portable display of the site worker, and the image information of the site of the persons participating in the work is shared with each other, and the instructions are given from the general remote working room 358 while sharing the image information. Proceed with work.

Workers on the site assembling large units for building construction can also use their own portable images as necessary to show images of the work status below the construction device 204 and the work status below the first floor. By looking at the display, the situation of the destination of the large unit is accurately grasped, and the equipment to be provided next is prepared.

As described above, according to the construction method of the plant equipment according to the present modification, the work below the construction device 204 is performed in the ground floor remote work room 359, the excavation unit remote work room 360, and the basement floor remote work room 361. The work under the floor 219 on the first floor and the work of the excavation unit 102 are remotely monitored, supervised, and operated autonomously in the respective remote work rooms.
8, the ground floor remote work room 359 and the excavation unit remote work room 36
0. By supervising, supervising, and operating the work in the basement floor remote work room 361 and other work related to plant facility construction, plant facility construction can be performed efficiently.

By sharing the video information between the remote working rooms and between the workers on site, it is easy to understand the meaning of the cue by voice, and the person who remotely operates can accurately predict the effect of the result of the remote operation. As a result, the speed of the installation and assembly work can be increased, the work efficiency can be improved, and the construction period can be shortened.

Second Embodiment Next, a method for constructing a nuclear power plant according to a second embodiment of the present invention will be described with reference to the drawings.

FIG. 13 is a longitudinal sectional view showing the construction of the nuclear power plant according to the present embodiment, and FIG. 14 is a longitudinal sectional view taken along line 2-2 of FIG. 13, and FIG.
4 is a cross-sectional view taken along line 3A-3A (caisson structure) and line 3B-3B (large unit assembly building).
For convenience of explanation, first, various members shown in FIGS. 13 to 15 will be briefly described, and then, a procedure of a nuclear power plant construction method according to the present embodiment will be described.

The present embodiment is a construction method of a twin-type nuclear power plant. This twin-type nuclear power plant has two reactor buildings in which the operation floor is integrated and the overhead crane is used in common. It has two turbine buildings with a single floor and a common overhead crane. The type of the reactor is a type in which the main circulation pump is outside the reactor pressure vessel (BWR), a type in which the main circulation pump is inside the reactor pressure vessel (ABWR), and a type without the main circulation pump (SWR).
BWR) or the like.

In FIGS. 13 to 15, reference numeral 14 denotes a caisson structure. On the caisson structure 14, a central mat 1 and an outer peripheral mat 2 constituting a common base of a reactor building and a turbine building are constructed. I have. A plurality of piles 17 are driven into the bedrock 15 through the caisson structure 14, the center mat 1 and the outer periphery mat 2, and the caisson structure 14 is connected and supported to the pile 17 via a slide mechanism 18. The slide mechanism 18 can be constituted by, for example, a jack-type mounting bracket. Construction of the steel containment vessel 3 and the pedestal lower structure 19 is performed on the central mat 1, and on the outer mat 2,
Construction is being carried out.

Steel Containment Vessel 3 and Pedestal Substructure 1
9. A plurality of telescoping masts 22 are erected on the building exterior periphery 5, and a roof 23 for all-weather work is supported by columns 24 erected on these masts 22. A track 7 is attached to the pillar 24, and an overhead crane 8 for transporting the large unit 10 is attached to the track 7 so as to be able to travel freely. Also, orbit 7
It extends to the inside of the large unit assembly building 9 for assembling the large unit 10.

In the large unit assembly building 9, remote monitoring and
An operation room 6 is provided, and a large monitor screen (not shown) is provided in the remote monitoring / operation room 6. This monitor screen has an overhead crane 8
The video transmitted wirelessly from the imaging device 130 attached to the large unit 10 and the video transmitted from the imaging device 130 attached to the column 24 can be arbitrarily selected and projected. .

Then, the operator remotely operates the overhead crane 8 while watching the image projected on the monitor screen, and carries out the transport, installation and assembly work of the large unit 10 and the like. Further, the imaging device 130 is also attached to the overhead crane 8, the structure at the installation destination, and the like. The illustration of the video signal transmission system and the camera control system is omitted.

Below the caisson structure 14, an overhead traveling type excavator 20 and a crawler type excavator 21 make the pile 1
6, the excavated cultivated soil is lifted through a through hole 39 (see FIG. 15) formed through the caisson structure 14 and the outer peripheral mat 2 (see FIG. 15).
Is discharged by.

In FIG. 14, reference numeral 38 denotes a large lifting machine, and the reactor pressure vessel 25 is lifted by the large lifting machine 38.

The imaging device 130 is a CMOS camera or CC
FIG. 16 shows a CMOS camera as the image pickup device 130 which is mounted on a permanent magnet fixing jig 58.
FIG. 4 is a conceptual diagram showing a state where the display device is fixed to a structure 48 by using the method.

The CMOS camera 130 is coupled to the permanent magnet fixing jig 58 via the arm mechanism 60 and the arm mechanism 6
No. 0 has a structure that bends when a fastening fitting (not shown) at the rotating joint 59 is loosened. The permanent magnet fixing jig 58 rotates a permanent magnet (not shown) by turning the knob 61, and the rotation causes the permanent magnet fixing jig 58 to rotate.
Are magnetically attracted to or released from the fixing surface 62 of the structure 48.

The CMOS camera 130 includes a lens 45 and a CMOS image pickup unit 46. The CMOS image pickup unit 46 includes a CMOS sensor, a timing generator, a signal converter from analog to digital, a signal processing LSI, and the like.
It is configured on a chip.

The CMOS sensor has an imaging area in which unit cells including photodiodes are arranged in a matrix in a two-dimensional matrix on a semiconductor substrate, vertical selecting means for selecting a readout row of the imaging area, and A plurality of vertical signal lines arranged in a column direction for reading out a detection signal of a corresponding photodiode, and a horizontal transistor for sequentially reading out detection signals from these vertical signal lines to a horizontal signal line arranged in a row direction, Between a vertical signal line and the horizontal selection transistor, convert a voltage appearing on the vertical signal line into charges,
In addition, a noise elimination circuit for suppressing noise by performing subtraction in the charge region is provided.

The control section 47 performs processing for transmitting the image data converted into digital signals by the CMOS image section 46 by radio waves. The control unit 47 has a built-in power supply (battery). The antenna for transmitting and receiving digital signal radio waves is not shown.

FIG. 17 is a circuit diagram showing an image pickup apparatus using a CMOS sensor. As shown in FIG.
The photodiode 92 (92-1-1, 92-1-2,
... 93-3 for amplifying the detection signal of 92-3-3) (93-1-1, 93-1-2,... 93-3)
-3), vertical selection transistors 94 (94-1-1, 94-1-2,..., 94) for selecting a line from which a signal is read
-3-3), reset transistors 95 (95-1-1, 95-1-2,..., 95-3) for resetting signal charges
3) are arranged in a two-dimensional matrix. In FIG. 17, 3 × 3 cells are arranged, but actually more unit cells are arranged.

A horizontal address line 97 (97-1, 97-97) is wired from the vertical shift register 96 in the horizontal direction.
2, 97-3) are connected to the gate of the vertical selection transistor 94 and determine a line from which a signal is read. Similarly, reset lines 98 (98-1, 98-2, 98-3) wired in the horizontal direction from the vertical shift register 96
Are connected to the gate of the reset transistor 95. The source of the amplifying transistor 93 is connected to vertical signal lines 99 (99-1, 99-2, 99-3) arranged in the column direction.
0-1, 100-2, and 100-3) are provided.

The vertical signal lines 99 (99-1, 99-
2, 99-3) is the slice transistor 108 (10
8-1, 108-2, and 108-3). The source of the slice transistor 108 has a slice capacitor 109 (109-1, 109-2, 1).
09-3) are connected, and the other ends thereof are connected to the slice pulse supply terminal 110. In order to reset the source voltage of the slice transistor 108, a slice reset transistor 112 is connected between the source of the slice transistor 108 and the slice power supply terminal 111.
(112-1, 112-2, 112-3) are provided,
The slice reset terminal 113 is connected to the gate of the transistor 112.

The drain of the slice transistor 108 has a slice charge transfer capacitor 114 (114-1, 114).
-2, 114-3) are connected. In order to reset the drain charge of the slice transistor 108, a drain set transistor 116 (116-1, 116-2, 116-3) is provided between the drain of the slice transistor 108 and the storage drain power supply terminal 115, The drain set terminal 117 is connected to the gate of the transistor 116. Further, the drain of the slice transistor 108 is connected to the horizontal shift register 1
The horizontal selection transistor 120 (120-1, 120-2, 12) driven by the selection pulse supplied from the
0-3) is connected to the horizontal signal line 105.

In the imaging device 130 configured as described above, noise can be suppressed by converting the voltage appearing on the vertical signal line 99 into charges and subtracting the charges in the charge region.

FIG. 18 is a timing chart showing the operation of the imaging device 130, and FIG. 19 is a diagram showing the potential of the slice transistor 108. Address pulse 121 for setting horizontal address line 97-1 to high level
Is applied, the vertical selection transistor 94 of this line is
ON only (ON) and the amplification transistor 9 of this line
3 and the load transistor 100 constitute a source follower circuit. Then, the gate voltage of the amplification transistor 93,
That is, a voltage substantially equal to the voltage of the photodiode 92 appears at the vertical signal line 99 and the gate of the slice transistor 108.

Next, a slice reset pulse 126 is applied to the slice reset terminal 113 to turn on the slice reset transistor 112 and initialize the charge of the slice capacitor 109. Further, the slice reset transistor 112 is turned off (OFF), and the first slice pulse 127 is applied to the slice pulse supply terminal 110. As a result, the voltage exceeds the channel potential Vsch under the gate of the slice transistor 108 to which the signal voltage is applied,
The first slice charge is transferred to the drain. At this time, since the drain reset pulse 128 is applied to the drain reset terminal 117 and the drain reset transistor 116 is on, the drain potential is fixed to the voltage Vsdd of the storage drain power supply terminal 115. Therefore, the first slice charge is discharged through the drain reset transistor 116.

Next, the drain reset transistor 1
After turning off the line 16, a reset pulse 123 for setting the reset line 98-1 to a high level is applied to turn on the reset transistor 95 on this line to reset the signal charge. Then, a voltage appears when there is no signal charge in the vertical signal line 99 and the gate of the slice transistor 108.
Next, a second slice pulse 129 is applied to the slice pulse supply terminal 110. Thereby, the slice transistor 10 to which the voltage is applied when there is no signal charge is applied.
The second slice charge is transferred to the drain beyond the channel potential Voch under the gate of 8. At this time, since the drain reset transistor 116 is off,
The second slice charge is transferred to the slice charge transfer capacitor 114 connected to the drain.

Next, the horizontal selection pulse 125 (125-1, 125-2, 125) is output from the horizontal shift register 104.
-3) to the horizontal select transistor 120 (120-1, 1
20-2, 120-3) sequentially to the horizontal signal line 10
Signals for one line from 5 are sequentially extracted. This behavior
By continuing to the next line and the next line in order,
All two-dimensional signals can be read.

In this device, assuming that the value of the slice capacitance 109 is Csl, the electric charge (second slice electric charge) finally read out to the horizontal signal line 105 is Csl × (Vsch−Voch), and when there is a signal, And a charge proportional to the difference between when the signal is reset and when there is no signal appears, so that noise due to variation in the threshold value of the amplification transistor 93 is suppressed.

Next, the procedure of the nuclear power plant construction method according to the present embodiment will be described with reference to the drawings. FIG.
0 is a construction work process chart showing the steps of the nuclear power plant construction method according to the present embodiment. As shown in FIG. 20, assembling work of the caisson structure 14 is performed at a place where the reactor building and the turbine building are to be constructed, and construction work of the large unit assembling building 9 is also performed in parallel with this assembling work. When the assembly of the caisson structure 14 is completed, the caisson structure 14
A plurality of piles 17 are driven into the bedrock 15 through the through holes. Then, the slide mechanism 18 is inserted into the pile 17, and the slide mechanism 18 is connected to the upper surface of the caisson structure 14 and the pile 17.
To fix the caisson structure 14 and the pile 17 together.

Next, the central mat 1 and the outer peripheral mat 2 are constructed on the upper surface of the caisson structure 14, and these mats 1, 2
The mast 22 is erected on the. Further, a pillar 24 is erected on the mast 22, and a roof 23 for all weather is attached to an upper end of the pillar 24. Next, the track 7 for the overhead crane 8 of the large unit assembly building 9 is extended to the column 24 supporting the roof 23 for all weather and attached to the column 24, and the overhead crane 8 is moved from the large unit assembly building 9 to the caisson structure 14 Be able to travel up.

Next, the caisson structure 14 and the outer mat 2
The crawler type excavator 21 and the overhead traveling type excavator 20 are connected to the caisson structure 14 through a through hole 39 formed through the
Carry in the space below. The overhead traveling excavator 20
The caisson structure 14 is attached to the rail structure 12a formed by using the reinforcing ribs 12 so as to be able to run freely. And
Excavation of the sedimentary layer 16 is performed by the excavators 20 and 21, and the excavated cultivated soil is carried out in a batch manner through the through holes 39 by a dedicated earth-lifting machine (not shown).

When the excavation depth of the excavators 20 and 21 reaches a certain amount, the upper structure 18a of the slide mechanism 18 is moved to the pile 1
7, the connection between the lower structure 18b of the slide mechanism 18 and the pile 17 is released, and the caisson structure 14 is slid using the own weight of the caisson structure 14 and the weight of the load thereon. To settle and slide mechanism 1
8, the vertical interval between the upper structure 18a and the lower structure 18b is increased.

When the predetermined sinking of the caisson structure 14 is completed, the lower structure 18b of the slide mechanism 18 and the pile 17 are connected again, and the connection between the upper structure 18a and the pile 17 is released.
The vertical distance between the upper structure 18a and the lower structure 18b of the slide mechanism 18 is reduced. At this time, the pile 17 protrudes from the upper end of the slide mechanism 18 by the same amount as the amount of sedimentation of the caisson structure 14, but the protruding portion of the pile 17 is appropriately cut. In addition, when the caisson structure 14 is settled, an operation of extending the length of the mast 22 above the caisson structure 14 by the same amount as the settling amount of the caisson structure 14 is performed in parallel. Then, the above-described operation is repeated until the caisson structure 14 reaches the bedrock 15.

On the other hand, in parallel with the excavation work below the caisson structure 14, the assembling work of the steel containment vessel 3 and the building outer periphery 5 and the installation work of the piping unit are performed above the caisson structure 14. In this assembly work, the large unit 10 is assembled in the large unit assembly building 9,
After attaching the plurality of imaging devices 130 to the lower part of the assembled large unit 10, the large unit 10 is transported from the large unit assembly building 9 to the building site of the reactor building and the turbine building by the overhead crane 8.

The transfer operation of the large unit 10 is performed by remote control by an operator in the remote monitoring and operation room 6 of the large unit assembly building 9. , An image captured by the imaging device 130 attached to the overhead crane 8, the installation target structure, the large unit 10, and the like, is projected, and the operator can obtain a sense of artificial reality from the image. Also,
Switching of images is performed with reference to an image on a screen displaying the installation position of the imaging device 130 on a three-dimensional CAD diagram of the structure under construction. In addition, when the piping unit is transported by the overhead crane 8 and the transport trolley (not shown) into the inside of the reactor containment vessel 3 under construction and the outer peripheral portion 5 of the building and electric work is performed, the imaging device is also used. 130
Work can be performed efficiently based on the video from

The installation / assembly work of the large-sized unit 10 is performed by using a video image of a destination to be installed by the imaging device 130 attached to the large-size unit 10 and the imaging device 130 attached to the structure of the assembly destination. The captured video is projected on the screen of the remote monitoring / operation room 6 of the large unit assembly building 9, and the operator operates the overhead crane 8 by remote control while watching the video. In addition, there are workers at the site of installation and assembly, and the workers at the site perform auxiliary work for installation and assembly. The operator of the remote monitoring and operation room 6 can quickly perform the work while watching the video including the worker at the site with the imaging device 130 while predicting the switch to the next work.

When the installation work of the large unit 10 is completed, the worker on the site removes the image pickup device 130 attached to the large unit 10 and then moves the image pickup device 130 attached to the structure under construction to the large unit. Move it around the place where you want to assemble. The imaging device 130 removed from the large unit 10 is the large unit assembly building 9
And is attached to the newly assembled large unit 10.

When assembling the part on which the telescopic mast 22 is mounted among the building parts of the reactor building and the turbine building, the mast 22 where the large unit 10 is to be mounted is fixed to the column 24. In this state, the length is reduced, and the large unit 10 (the unit for the steel containment vessel 3 and the building outdoor peripheral portion 5) is inserted into the open space to assemble the mast 22 in a state where the large unit 10 is inserted into the open large space. Extend and attach. While the all-weather roof 23 is supported in this way, the above-described operation is sequentially performed on all the masts 22 mounted on the construction parts of the reactor building and the turbine building.

After the caisson structure 14 reaches the bedrock 15 or above the caisson structure 14, the assembling speed of the reactor building and the turbine building is reduced.
Caisson structure 14
Weather roof 2 for reactor building and turbine building above
3 becomes high independently of the height of the large unit assembly building 9, so that the overhead crane 8 cannot run from the large unit assembly building 9 to under the all-weather roof 23.

Therefore, in order to cope with such a case, the track 7 of the overhead crane 8 traveling under the all-weather roof 23 is overhanged above the large unit assembly building 9, or an overhead traveling jib crane is used. Large unit 1 directly by overhead crane running under all-weather roof 23
0 (a steel containment vessel 3, equipment and piping units installed inside the building outer peripheral part 5) and a large unit assembly building 9
It is lifted and transported for installation and assembly. Also,
The track 7 is raised by a method of inserting a structural unit below the mast 22.

As shown in FIG. 14, the reactor pressure vessel 2
5. Large equipment such as a condenser releases at least a part of the all-weather roof 23, hangs large equipment from above the roof 23 using a large lifting machine 38, and builds a foundation built on the central mat 1. Install large equipment on the top.

When the assembling and carrying-in work of the large unit 10 for constructing the reactor building, the turbine building and the like is completed,
The large unit assembly building 9 is converted into a maintenance building for maintenance of a nuclear power plant.

FIGS. 21 to 23 are schematic views showing the nuclear power plant after the completion of the construction work. FIG.
FIG. 22 is a longitudinal sectional view taken along line -9, FIG.
FIG. 23 is a longitudinal sectional view taken along the line, and FIG.
It is a cross-sectional view along the line (reactor building part) and the 11B-11B line (parts other than the reactor building). 21 to 2
In FIG. 3, reference numeral 67 denotes a reactor building. Inside the reactor building 67, two reactor pressure vessels 25 supported by a pedestal 30 are housed.

A control rod driving device 29 is provided below the reactor pressure vessel 25. A reactor well 27 is provided above the reactor pressure vessel 25, and a fuel storage pool 26 and a reactor internal structure storage pool 28 are provided adjacent to the reactor well 27. In the figure, reference numeral 36 indicates an operation floor, and reference numeral 31 indicates a refueling device. An overhead crane 33 that can travel along the track 32 is provided above the reactor building 67.

Also, in FIGS.
Indicates a turbine building, and a turbine 70 is housed inside the turbine building 68. The turbine 70 is connected to a generator 71 (see FIG. 23).
A condenser 73 is provided below the bottom. Turbine 70
, A moisture separating heater 72 is provided, and a movable shield wall 69 is provided around the turbine 70 and the moisture separating heater 72. An overhead crane 74 that can travel along a track 75 is provided above the turbine building 68. In the figure, reference numeral 76 indicates an operation floor, and reference numeral 83 indicates a transport path.

Also, in FIGS.
Shows a maintenance building constructed by remodeling the large unit assembly building 9 (see FIG. 13). Inside the maintenance building 66, a large hood 77 with a local exhaust device (FIGS. 21 and 23) is provided. Is provided. An overhead crane 34 that can travel along the track 35 is provided above the maintenance building 66. In FIGS. 22 and 23, reference numeral 82 indicates a transport path. Also,
In FIGS. 21 and 23, reference numeral 78 denotes a spare parts building, and an overhead crane 79 that can travel along a track 80 is provided above the spare parts building 78.

As described above, according to the construction method of the nuclear power plant according to the present embodiment, the excavation work for fixing the bases of the reactor building 67, the turbine building 68 and the like to the bedrock 15 is performed in parallel with the caisson construction method. Then, the base (artificial rock) is formed on the caisson structure 14, the containment vessel 3 is constructed, and the construction work of the reactor building 67 and the like is performed. Therefore, the period required for the construction of the nuclear power plant can be significantly reduced (for example, about one year).

Also, since the large unit assembly building 9 is installed adjacent to the site where the caisson method is being used for construction, the assembly operation of the large unit 10 and the transfer operation to the installation location can be performed smoothly. And the work efficiency can be improved. Further, since the assembling work of the large unit 10 is performed in the large unit assembling building 9, the working environment during the assembling work is favorable, and the working efficiency can be further improved.

Further, since the remote assembly work is performed in the remote monitoring and operation room 6 of the large unit assembly building 9 while watching the image from the imaging device 130, the burden on the operator is greatly reduced, and the work efficiency is reduced. Can be greatly improved. Further, the operator in the remote monitoring and operation room 6 uses the imaging device 130 attached to the large unit 10 to view the state of the installation destination of the large unit 10 and the ceiling for transportation and assembly while watching the signal of the worker at the site. Since the crane 8 can be remotely operated, the determination of the next procedure to be performed can be made quickly, and the efficiency of the assembling work can be further improved.

When a CMOS camera is used as the image pickup device 130, the CMOS camera consumes less power and can be operated on a battery, and image data can be transmitted wirelessly. This eliminates the need for cable processing and the like, and allows the attachment or detachment of the imaging device 130 to be performed easily and quickly. In addition, since the imaging unit 48 of the CMOS camera can be integrally manufactured by the semiconductor manufacturing technology, the size can be easily reduced, and the mass production can be performed, so that the manufacturing cost can be reduced. Therefore, it does not cost much to manufacture a large number of imaging devices 130, so that the imaging devices 130 are installed in advance in all places where monitoring is desired, thereby improving the efficiency of irregular installation and assembly work. it can.

In addition, the reactor building 67 and the turbine building 6
During the construction period of 8, the large unit 10 is assembled in the large unit assembly building 9 so that the work efficiency can be improved, and after the construction of the reactor building 67 and the turbine building 68 is completed, the large unit assembly building 9 is replaced with the maintenance building 6.
When performing periodic inspections of nuclear power plants by remodeling to 6, the equipment to be maintained is transferred to the maintenance building 66, and periodic inspections are performed using a dedicated automatic machine installed in the maintenance building 66. And the efficiency of the periodic inspection work can be improved. Further, by constructing the large unit assembly building 9 on the premise of the entire life span of the nuclear power plant and converting the large unit assembly building 9 to the maintenance building 66, the total construction cost can be reduced.

First Modification Next, a construction method of a nuclear power plant according to a first modification of the second embodiment will be described with reference to FIGS. In the above embodiment, the pile 1 driven into the rock 15
7, the caisson structure 14 is supported (see FIG. 13 and the like). However, the construction method of the nuclear power plant according to this modification is different from the above-described embodiment in that the caisson structure is supported by a pneumatic column caisson.

FIG. 24 is a longitudinal sectional view showing a state where the construction method of a nuclear power plant according to the present modification is being implemented.
FIG. 25 is a cross-sectional view taken along line 13-13 of FIG. As shown in FIGS. 24 and 25, the caisson structure 4
0 is a column caisson 11 with a pneumatic caisson structure
And a plane caisson 4. And
By increasing the internal pressure of the column caisson 11, the plane caisson 4 and the reactor building and the turbine building built thereon are supported.

Next, the procedure of the construction method for a nuclear power plant according to this modification will be described. Note that the description of the procedure common to the above embodiment is partially omitted.

At the place where the reactor building and the turbine building are to be constructed, the caisson structure 40 is assembled, and at the same time, the construction of the large unit assembly building 9 is also performed. The crawler type excavator 21 and the overhead traveling type excavator 20 (see FIG. 13) are inserted into the space below the caisson structure 40 through a through hole (not shown) formed through the caisson structure 40 and the outer peripheral mat 2. It is carried in and excavation work is performed by these excavators 20 and 21. The excavated cultivated soil is carried out in a batch manner through a through-hole using a dedicated earth-lifting machine (not shown).

Further, a bucket type excavator (not shown) is carried into the caisson 11, and excavation work is performed by the excavator. Here, since the inside of the caisson 11 is in a high pressure state, the excavation work is performed by an unmanned operation by an unmanned excavator. The excavated cultivated soil is carried out in batches using an earth-lifting machine (not shown) via an interlock. Then, as the excavation in the support caisson 11 proceeds, the slide support 13 is extended.

Next, when the excavation below the plane caisson 4 proceeds, the air in the column caisson 11 is evacuated, the slide column 13 is contracted, and the caisson structure 40 is settled. Until the caisson structure 40 reaches the bedrock 15 (see FIG. 13), the column caissons 11 are sequentially added by the same amount as the amount of sedimentation of the caisson structure 40, and the height is increased.

In the construction method for a nuclear power plant according to this modification, the same effects as in the above embodiment can be obtained.

Second Modification Next, a nuclear power plant construction method according to a second modification of the second embodiment will be described with reference to FIG. In the above embodiment, the caisson structure 14 is supported by the pile 17 driven into the bedrock 15 (see FIG. 13 and the like). However, the construction method of the nuclear power plant according to the present modified example is such that the caisson structure is a pneumatic caisson structure. Is different from the above embodiment.

FIG. 26 shows a pneumatic caisson structure 41 used in the construction method of a nuclear power plant according to this modification.
FIG.

Hereinafter, the procedure of the construction method of the nuclear power plant according to the present modification will be described. Note that the description of the procedure common to the above embodiment is partially omitted.

At the place where the reactor building and the turbine building are to be constructed, the construction work of the pneumatic caisson structure 41 is performed, and at the same time, the construction work of the large unit assembly building 9 (see FIG. 13) is also performed. Pneumatic caisson structure 4
A crawler type excavator 21 and an overhead traveling type excavator 20 (see FIG. 13) are connected to a pneumatic caisson structure 4 through a through hole (not shown) formed through the outer mat 1 and the outer peripheral mat 2.
1 into the space below. Here, an interlock is provided in the through hole in the present modification. Excavator 2
Excavation work is performed by 0 and 21, and the excavated cultivated soil is carried out in a batch manner using a dedicated earth-lifting machine (not shown) through an interlock type through hole.

The internal pressure of the pneumatic caisson structure 41 is high enough to support the weight of the caisson structure 41 and the weight of the reactor building and the turbine building. For this reason, the excavation work below the pneumatic caisson structure 41 is performed by an unmanned operation. When the excavation work proceeds, the air in the pneumatic caisson structure 41 is evacuated, and the pneumatic caisson 41 is settled.

In the construction method for a nuclear power plant according to this modification, the same effects as in the above embodiment can be obtained.

Third Modification Next, a nuclear power plant construction method according to a third modification of the second embodiment will be described with reference to FIGS. 27 and 28. FIG. In the above embodiment, the pile 1 driven into the rock 15
7, the caisson structure 14 is supported (see FIG. 13 and the like). However, in the construction method of a nuclear power plant according to this modification, a mountain retaining wall made of a steel pipe sheet pile or the like is driven into the rock around the caisson structure, and the mountain retaining wall is used. Caisson structure,
This embodiment is different from the above embodiment in that the weight of the reactor building and the turbine building is supported.

FIG. 27 is a longitudinal sectional view showing a state in which a construction method of a nuclear power plant according to this modification is being implemented.
FIG. 28 is a line 16A-16A of FIG. 27 (caisson structure).
And FIG. 16B is a cross-sectional view along line 16B-16B (large unit assembly building section). As shown in FIG. 27 and FIG. 28, a mountain retaining wall 37 is
5 and the caisson structure 4
2. The weight of the reactor building and turbine building is supported.

Next, the procedure of the construction method for a nuclear power plant according to this modification will be described. Note that the description of the procedure common to the above embodiment is partially omitted.

At the place where the reactor building and the turbine building are to be constructed, the retaining wall 37 is provided around the caisson structure 42 construction place.
Into the bedrock 15, and in parallel with this work, the caisson structure 42 is assembled. In parallel with these operations, construction work of the large-size unit assembly building 9 is also performed. When the caisson structure 42 is assembled, the caisson structure 4
2 is fixed to the retaining wall 37 by the fixing device 84.

Then, when the excavation depth of the excavators 20 and 21 reaches a certain amount, the fixing device 84 is operated to loosen the connection between the caisson structure 42 and the retaining wall 37, and the weight of the caisson structure 42 and the The caisson structure 42 is settled by a certain amount depending on the weight of the load. After the predetermined amount of sedimentation is completed, the caisson structure 42 and the retaining wall 37 are firmly connected again. When the caisson structure 42 is settled, an operation of extending the length of the mast 22 above the caisson structure 42 by the same amount as the settling amount of the caisson structure 42 is performed in parallel. The above series of operations is repeated until the caisson structure 42 reaches the rock 15.

In the construction method for a nuclear power plant according to this modification, the same effects as in the above embodiment can be obtained.

Fourth Modification Next, a nuclear power plant construction method according to a fourth modification of the second embodiment will be described with reference to FIGS. The construction method of the nuclear power plant according to this modification is
It is characterized in that a CMOS camera or the like is used as the imaging device 130 (see FIG. 13).

FIG. 29 shows a CMOS camera 51 used in the nuclear power plant construction method according to this modification.
30 is a longitudinal sectional view taken along line 18-18 in FIG.

As shown in FIGS. 29 and 30, the CMO
The S-combination camera 51 has a CMOS camera 43 having a viewing angle of 90 degrees or more at the center thereof, and a CMOS camera 44 having a viewing angle of 90 degrees or more having four truncated pyramids around the center camera 43. It is provided on each side. The surface of the quadrangular pyramid forms an angle of 45 degrees with the horizontal plane, so that the central camera 43 and the peripheral camera 44 form an angle of 45 degrees with each other. The CMOS camera 51 is
It is attached to the structure 48 in a socket manner by a screw connection 49. The central camera 43 and the peripheral camera 44 have a lens 45. The CMOS combined camera 51 has a built-in CMOS imaging unit 46 and control unit 47, and the internal space of the CMOS combined camera 51 is closed by a lid 50.

In the CMOS camera 51,
The light is condensed by the lens 45 and is imaged by a photoelectric conversion element unit (not shown) of the CMOS imaging unit 46. The video is taken out for each horizontal scanning line and transmitted to the control unit 47 after digital conversion. In the control unit 47, the remote monitoring / operation room 6 (FIG. 1)
3) based on the digital control signal from the operator
From the images in the hemispherical direction photographed by the five CMOS cameras 43 and 44, an image of a desired viewing angle in a desired direction (an image becomes an enlarged image when the viewing angle is reduced) is transmitted as digital signal radio waves. The controller 47 has a built-in power supply (rechargeable battery) required for the above series of operations. CMOS
Signal transmission between the imaging unit 46 and the control unit 47 is performed by digital signals using an optical fiber (not shown). The antenna for transmitting and receiving digital signal radio waves is not shown.

The structure 4 of the CMOS camera 51
As for the method of attachment to 8, the double-sided adhesive tape 50 can be used as shown in FIG. 31, or the attachment plate 54 can be used as shown in FIG. In addition,
The CMOS assembly camera 51 is connected to the structure 4 by the mounting plate 54.
In case of mounting on 8, mounting screws at the mounting plate 54,
It can be fixed by vice fixing or by holding with a permanent magnet.

Further, as shown in FIG. 33, the CMOS-assembled camera 51 can be attached to the structure 48 by the permanent-magnet-type fixing bracket structure 57. The fixing bracket structure 57 has a permanent magnet fixing jig 58, and the CMOS assembled camera 51 is connected to the permanent magnet fixing jig 58 via an arm mechanism 60. The arm structure 60 is configured to bend by loosening a fastening (not shown) of the rotating joint 59. Further, the permanent magnet fixing jig 58 includes a knob 61.
Is rotated to rotate a permanent magnet (not shown), so that the permanent magnet fixing jig 58 is magnetically attracted to or released from the fixing surface 62 of the structure 48 by this rotation.

FIG. 34 shows a CMOS stereoscopic camera 6 used in the construction method of a nuclear power plant according to this modification.
It is the front view which showed 3 and the permanent-magnet-type fixture structure 57 in partial cross section. As shown in FIG. 34, the stereoscopic camera 63 has two CMOS cameras 43, 43, and these CMOS cameras 43 are arranged apart from each other by an interval of a human eye.

FIG. 35 is a front view partially showing a CMOS stereoscopic camera 65 and a permanent magnet type fixing bracket structure 57 used in the construction method of a nuclear power plant according to this modification. As shown in FIG. 35, this stereoscopic assembled camera 65 includes two CMOS assembled cameras 51, 51.
These CMOS-assembled cameras 51 are disposed apart from each other by an interval of human eyes.

FIG. 36 shows a case where a plurality of CMOS-assembled cameras 51 are installed on the structure 48 at the assembly site using the large unit by the double-sided adhesive tape 52 as shown in FIG. As shown, a state in which a plurality of stereoscopically assembled cameras 65 are installed by the permanent magnet fixing bracket structure 57 is shown.

The worker at the assembly site changes the positions of the various cameras 51, 63, and 65 attached to the structure 48 based on instructions from the operator in the remote monitoring and operation room 6, and the optimal image information is obtained by the operator. To be sent to If a wall-mounted monitor TV is installed together with the audio information generating device at the assembly site, and the same image as the image viewed by the operator in the remote monitoring and operation room 6 is projected on the monitor TV at the site, the remote Two-way information can be exchanged between the operator in the monitoring and operation room 6 and the on-site worker.

Further, an image in an arbitrary direction can be obtained by extracting a signal corresponding to the number of pixels of the monitor from a video signal captured by the CMOS camera 51 or the like. Further, a plurality of signals obtained by a plurality of vertical and horizontal scans are averaged from a video signal photographed by the CMOS camera 51 or the like, a signal corresponding to the number of pixels of the monitor is extracted, and an image obtained by changing the magnification in an arbitrary direction is obtained. You can also get.

As described above, according to the construction method of the nuclear power plant according to the present modification, the CMOS camera 51,
Images from the stereoscopic camera 63 and the stereoscopic assembled camera 65 change the viewing direction of the camera by image processing,
Alternatively, since the enlarged projection can be performed with a narrow viewing angle, it is possible to give detailed video information to an operator who works remotely, and it is also possible to obtain a sense of distance to an object. Therefore, the efficiency of the remote control operation can be greatly improved.

The CMOS shown in FIGS.
As a modified example of the assembled camera 51, three cameras having a viewing angle of 120 degrees or more can be provided around the center camera having a viewing angle of 90 degrees or more at an angle of 30 degrees with respect to the center camera.

Fifth Modification Next, a nuclear power plant construction method according to a fifth modification of the second embodiment will be described with reference to FIG. According to the construction method of the nuclear power plant according to the present modification, when the large unit assembly building 9 is remodeled after the completion of the construction work to form the maintenance building 66 (see FIG. 21), the large hood and the CMOS camera are installed inside the maintenance building 66. Is provided.

FIG. 37 is a plan view showing a schematic configuration of a large hood 77 in a maintenance building 66 constructed by a nuclear power plant construction method according to this modification. In FIG. 37, reference numeral 85 indicates a table on which equipment to be maintained is placed, and reference numeral 86 indicates a support for a working robot (not shown). Also, reference numeral 8 in the figure
Reference numerals 7, 88, 89, and 90 denote conveyors for transporting the equipment to be maintained in the large hood 77.

The curing is removed inside the large hood 77,
Each work room in which devices for performing various operations such as decontamination, disassembly, and assembly are arranged is formed. Fig. 30
Are mounted, and these CMOS mounted cameras 51 are mounted on a wall surface, a ceiling surface (not shown), or the like in a direction orthogonal to the transport direction of the device. . Here, since the socket-attached CMOS assembled camera 51 can be easily installed at an arbitrary place, the CMOS assembled camera 51 can be appropriately arranged at an optimal photographing position for remote operation and remote monitoring. .

When periodic inspection work is performed on large and small equipment in a nuclear power plant using the large hood 77 shown in FIG. 37, images of the equipment obtained by the CMOS camera 51 are remotely monitored by wireless transmission. Operation room 6 (Fig. 2
Based on this image, the operator monitors the transported or disassembled and inspected equipment and performs operations such as disassembly, inspection, repair, and assembly by remote control.

Also, a socket type CMOS assembled camera 5
By constructing a stereoscopic camera by arranging two 1s side by side, it is possible to project a video with more perspective on the screen. In this way, the operator can efficiently perform the periodic inspection work by monitoring and remote control while watching a more realistic image.

Further, if the system is configured to automatically track the conveyed devices by processing the images photographed by the CMOS camera 51, the operator can monitor many devices at the same time.

As described above, according to the construction method of the nuclear power plant according to this modification, when the large unit assembly building 9 is remodeled to form the maintenance building 66, the large hood 77 and the CMOS are installed inside the maintenance building 66. As we set up a built-in camera, the maintenance building 6
When performing a periodic inspection operation of the equipment of the nuclear power plant using the large hood 77 in the operator 6, the operator operates the CMOS-assembled camera 51 projected on the screen of the remote monitoring and operation room 6.
Work can be performed efficiently by remote control while watching the video from.

Since the CMOS-assembled camera 51 can wirelessly transmit an image, wiring work for transmitting the image is not required, so that not only the installation cost can be reduced, but also the wiring can be performed inside the large hood 77. Since there is no pipe, decontamination work on the inner wall surface of the large hood 77 and the like can be easily performed.

The construction method of a nuclear power plant according to the above-described embodiment and each of the modifications can be applied to, for example, the construction of a high-rise building. The caisson structure is constructed in parallel with the excavation work below the caisson structure. Can be constructed above the building, and in the construction of the building, the work can be efficiently performed by using an imaging device including a CMOS camera.

[0194]

As described above, according to the construction method of the plant equipment according to the present invention, the construction work of the storage building above the caisson structure and the excavation work below the caisson structure are performed simultaneously. As a result, the time required for constructing the plant equipment can be significantly reduced.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing one step of a plant facility construction method according to a first embodiment of the present invention, in which a digging part for installing a caisson structure in a sedimentary layer at a site where a plant facility is constructed is excavated. The state is shown.

FIG. 2 is a longitudinal sectional view showing one step of the construction method of the plant equipment according to the first embodiment of the present invention, in which a caisson structure is assembled in an excavation part, and a push-up device and a roof structure are used on the caisson structure. The state where the construction apparatus was assembled is shown.

FIG. 3 is a longitudinal sectional view showing one step of the construction method of the plant equipment according to the first embodiment of the present invention, and shows a state where the caisson structure is settled to a depth equivalent to the thickness of the base.

FIG. 4 is a longitudinal sectional view showing one step of the construction method of the plant equipment according to the first embodiment of the present invention, and shows a state in which the upper surface of the base is lower than the ground surface.

FIG. 5 is a longitudinal sectional view showing one step of the construction method of the plant equipment according to the first embodiment of the present invention, showing a state where the first floor of the storage building on the ground is settled down to the ground surface. Is shown.

FIG. 6 is a longitudinal sectional view showing one step of the construction method of the plant equipment according to the first embodiment of the present invention, and shows a state in which the work is further advanced than the state shown in FIG.

FIG. 7 is a longitudinal sectional view showing one step of the construction method of the plant equipment according to the first embodiment of the present invention, in which a groove is formed in the rock along the cutting edge, the caisson structure is settled, and the ceiling surface is set. And the tip of the cutting edge is in contact with the rock.

FIG. 8 is a longitudinal sectional view showing one step of the construction method of the plant equipment according to the first embodiment of the present invention, in which concrete is poured into a groove formed by excavating the rock and the caisson structure is fixed to the rock. Shows that the construction of the storage building has also been completed.

FIG. 9 is a diagram illustrating a method for constructing a plant facility according to a first embodiment of the present invention, in which an overhang portion of a portal crane is inserted into a storage building under construction through an opening to transport excavated soil. FIG. 4 is a side view showing a state where the container is suspended and mounted on a transport trolley.

FIG. 10 shows a state in which an airlock is attached to a through hole of a base and an overhead traveling type transporter is attached below a ceiling surface of a caisson structure in the construction method of plant equipment according to the first embodiment of the present invention. FIG.

FIG. 11 is a view of the airlock shown in FIG. 10 taken along line AA.

FIG. 12 is a longitudinal sectional view showing a state in which the residual soil is put into a transport container from the excavation part and taken out to the ground surface in the construction method of the plant equipment according to the first embodiment of the present invention.

FIG. 13 is a longitudinal sectional view showing a state where a construction method of a nuclear power plant according to a second embodiment of the present invention is being performed.

FIG. 14 is a vertical sectional view taken along line 2-2 of FIG. 1;

FIG. 15 is a cross-sectional view taken along line 3A-3A (caisson structure) and line 3B-3B (large unit assembly building) of FIG. 14;

FIG. 16 is a conceptual diagram showing a state in which a CMOS camera as an imaging device is fixed to a structure using a permanent magnet fixing jig.

FIG. 17 is a circuit diagram illustrating an imaging device using a CMOS sensor.

FIG. 18 is a timing chart illustrating an operation of the imaging device.

FIG. 19 illustrates a potential of a slice transistor.

FIG. 20 is a construction work process diagram showing the steps of a nuclear power plant construction method according to a second embodiment of the present invention.

FIG. 21 is a longitudinal sectional view showing a nuclear power plant constructed by a nuclear power plant construction method according to a second embodiment of the present invention.

FIG. 22 is a view showing another longitudinal section of the nuclear power plant shown in FIG. 21;

FIG. 23: Line 11A-11A in FIG. 22 (reactor building)
And a cross-sectional view along line 11B-11B (parts other than the reactor building).

FIG. 24 is a longitudinal sectional view showing a state where a construction method of a nuclear power plant according to a first modification of the second embodiment of the present invention is being performed.

FIG. 25 is a transverse sectional view taken along the line 13-13 in FIG. 24;

FIG. 26 is a plan view showing a pneumatic caisson structure used in a nuclear power plant construction method according to a second modification of the second embodiment of the present invention.

FIG. 27 is a longitudinal sectional view showing a state where a construction method of a nuclear power plant according to a third modification of the second embodiment of the present invention is being performed.

FIG. 28: Lines 16A-16A (caisson structure) and 16B-16B (large unit assembly building) of FIG.
FIG.

FIG. 29 is a plan view showing a CMOS combined camera used in a nuclear power plant construction method according to a fourth modification of the second embodiment of the present invention.

FIG. 30 is a longitudinal sectional view taken along the line 18-18 in FIG. 29;

FIG. 31 is a longitudinal sectional view showing a state where the CMOS camera shown in FIG. 29 is installed on a structure with a double-sided adhesive tape.

32 is a longitudinal sectional view showing a state where the CMOS camera shown in FIG. 29 is installed on a structure with a mounting plate.

FIG. 33 is a front view showing, in partial cross section, a state in which the CMOS camera shown in FIG. 29 is installed on a structure using a permanent magnet fixing bracket structure.

FIG. 34 is a front view showing, in partial cross section, a stereoscopic camera and a permanent magnet type fixing bracket structure used in a nuclear power plant construction method according to a fourth modification of the second embodiment of the present invention.

FIG. 35 is a front view showing, in partial cross section, a stereoscopically assembled camera and a permanent magnet type fixing bracket structure used in a construction method of a nuclear power plant according to a fourth modification of the second embodiment of the present invention.

36 is a perspective view showing a state where the CMOS camera shown in FIG. 31 is installed on a structure, and the stereoscopic camera shown in FIG. 35 is installed in a large unit.

FIG. 37 is a plan view showing a schematic configuration of a large hood in a maintenance building constructed by a nuclear power plant construction method according to a fifth modification of the second embodiment of the present invention.

FIG. 38 is a process diagram showing an example of a conventional construction work process in a construction plan of an improved boiling water reactor (ABWR).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Central mat 2 Outer perimeter mat 3 Reactor containment vessel 4 Plane caisson 5 Building outside circumference 6 Remote monitoring and operation room 8 Overhead crane 9 Large unit assembly building 10 Large unit 11 Support caisson 13 Slide support 14, 40, 42, 203 Caisson structure 15, 214 Bedrock 16, 201 Sedimentary layer 17 Pile 18 Slide mechanism 22 Mast 23 Roof 24 Column 25 Reactor pressure vessel 37 Mountain retaining wall 38 Large lifting machine 41 Pneumatic caisson structure 51 CMOS assembled camera 63 CMOS stereoscopic camera 65 CMOS stereoscopic view Assembly camera 66 Maintenance building 67 Reactor building 68 Turbine building 77 Large hood 92 Photodiode 93 Amplification transistor 94 Horizontal selection transistor 95 Reset transistor 96 Vertical shift register 97 Horizontal add Slice line 98 Reset line 99 Vertical signal line 100 Load transistor 104 Horizontal shift register 105 Horizontal signal line 108 Slice transistor 109 Slice capacity 110 Slice pulse supply terminal 111 Slice power supply terminal 112 Slice reset transistor 113 Slice reset terminal 114 Slice charge transfer capacity 115 Storage Drain power supply terminal 116 Drain set transistor 117 Drain set terminal 120 Horizontal selection transistor 121 Address pulse 123 Reset pulse 125 Horizontal selection pulse 126 Slice reset pulse 127, 129 Slice pulse 128 Drain reset pulse 130 Imaging device 202 Drilling unit 204 Construction device 207 Base 208 Storage building 230 Ceiling 326 Groove 327 Blade 3 8 oversee remote work chamber 359 ground floor remote work chamber 360 excavation remote work chamber 361 underground floor remote work chamber

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Minoru Hanawa 8 Shinsugita-cho, Isogo-ku, Yokohama, Kanagawa Prefecture Inside the Toshiba Yokohama Office (72) Inventor Hitoshi Sato 8 Shinsugita-cho, Isogo-ku, Yokohama-shi, Kanagawa Toshiba Yokohama Office

Claims (19)

[Claims] 1. A caisson structure is installed at a construction site of plant equipment, excavation work is performed below the caisson structure, and a base construction work and a plant equipment storage building are performed above the caisson structure in parallel with the excavation work. A construction method for plant equipment, comprising performing construction work and plant equipment installation work, and sinking the caisson structure to a predetermined depth together with a structure on the upper surface thereof as the excavation work progresses. 2. The method according to claim 1, wherein the caisson structure is settled to a bedrock and fixed to the bedrock. 3. When fixing the caisson structure to the rock, a groove is formed in the rock along the blade so that the cutting edge and the ceiling of the caisson structure directly contact the rock, and 3. The method according to claim 2, wherein the whole is fixed to a bedrock. 4. An airlock chamber with a built-in crane is provided in a through hole formed in said ceiling of said caisson structure, and said airlock chamber is used to transport excavated soil between below and above said caisson structure. The method for constructing a plant facility according to any one of claims 1 to 3, wherein the method is performed through a method. 5. A facility according to claim 1, wherein a plurality of remote work rooms are provided at a construction site of the plant equipment, and the plant equipment is constructed while transmitting video and audio information between the remote work rooms. A method for constructing a plant facility according to claim 4. 6. The method according to claim 1, wherein the plant equipment is a nuclear power plant. 7. A pile is driven into a bedrock so as to penetrate the caisson structure, the pile and the caisson structure are connected by a slide mechanism, and the caisson structure is settled by the slide mechanism. The construction method for plant equipment according to any one of claims 1 to 6. 8. The caisson structure comprises a plane caisson on which the base is constructed on an upper surface, and a column caisson having a pneumatic caisson structure, and the column caisson causes the plane caisson to sink. A method for constructing a plant facility according to any one of claims 1 to 6. 9. The construction method for plant equipment according to claim 1, wherein the caisson structure is a pneumatic caisson structure. 10. A caisson structure is driven into a rock around a site where the caisson structure is installed, the caisson structure is supported by the masonry wall, and the caisson structure is slid along the mountain wall to settle. The method for constructing a plant facility according to any one of claims 1 to 6, wherein 11. A large unit assembly building for assembling a large unit is installed adjacent to an installation site of the caisson structure, a roof above the installation site of the caisson structure is covered with a roof, and the large unit assembly is assembled from the roof. The construction method of plant equipment according to any one of claims 1 to 10, wherein an overhead crane is provided so as to be able to travel to the inside of the building. 12. The plant equipment according to claim 11, wherein when the large equipment is installed, at least a part of the roof is released, and the large equipment is suspended from above the roof by a hoist. Construction method. 13. The method according to claim 11, wherein when the assembling and carrying-in work of the large-sized unit is completed, the large-sized unit assembling building is remodeled into a maintenance building for performing a maintenance work of plant equipment. Construction method of the described plant equipment. 14. A hood for performing various maintenance operations inside the maintenance building, and an imaging device for remotely monitoring a state of the maintenance operation is provided at an appropriate position inside the hood. Item 14. The construction method for plant equipment according to item 13. 15. When an image pickup device is attached to a large unit and the large unit is transported to an installation site and assembled, remote operation is performed while watching an image from the image pickup device on a monitor of a remote control room. The method for constructing plant equipment according to any one of claims 1 to 14, wherein: 16. A monitor is installed not only in the remote operation room but also in the installation site of the large unit, and an image from the imaging device is provided between an operator in the remote operation room and an operator in the installation site. 16. The method according to claim 15, wherein information can be shared. 17. The method according to claim 14, wherein the imaging device includes a stereoscopic camera. 18. The image pickup apparatus according to claim 14, further comprising: a CMOS combined camera having a plurality of CMOS cameras, wherein images in a plurality of directions can be obtained by the CMOS combined camera. The construction method for plant equipment according to claim 1. 19. The image pickup apparatus according to claim 1, wherein the image pickup area includes unit cells including photodiodes arranged in a two-dimensional matrix on a semiconductor substrate, and vertical selection means for selecting a readout row of the image pickup area. A plurality of vertical signal lines arranged in the column direction for reading out the detection signals of the photodiodes corresponding to the rows, and horizontal transistors sequentially reading out the detection signals from these vertical signal lines to horizontal signal lines arranged in the row direction. Between the vertical signal line and the horizontal selection transistor, converts the voltage appearing on the vertical signal line into electric charges,
19. The method according to any one of claims 14 to 18, wherein the imaging apparatus is provided with a noise removing circuit that suppresses noise by subtracting in a charge area.