JP2592940B2 - Turbine building - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a turbine building in which a turbine main engine, a generator, and main equipment of a turbine system are arranged in a nuclear power plant.

(Prior Art) In a turbine building of a nuclear power plant, a shielding wall is installed in consideration of patrol by an employee operating the plant.

FIG. 2 is a plan view showing a conventional turbine building of this kind, in which radioactive steam generated in a reactor pressure vessel is guided to a turbine building 1 by a main steam pipe, and the steam is used to rotate a rotor of a turbine main engine. Is driven to rotate. The steam after working in the turbine main engine is cooled by the condenser 2 installed in the central part of the turbine building 1 and condensed,
It is supplied as water to the reactor pressure vessel via various facilities.

By the way, some of the equipment in the turbine building 1 includes a condenser 2, a condensing device 3 for condensate water treatment, a condensate desalination device 4, and a condenser 2 with the degree of vacuum maintained. A high-dose equipment such as a gas waste treatment facility 5 for performing gas treatment, and a turbine-driven reactor water supply pump 6 for driving a pump with radioactive steam to supply water to a reactor pressure vessel;
High pressure condensate pump 9 and motor driven reactor feed pump 10
There is a low-dose device such as the like, and between the high-dose region 8 where the high-dose device is installed and the low-dose region 11 where the low-dose device is installed, for each of the facilities and equipment, The shielding wall 7 is installed in consideration of patrol of high-dose equipment by workers.

(Problems to be Solved by the Invention) In the conventional turbine building, the shielding wall 7 is installed so as to shield each high-dose device.
A very large number of shielding walls 7 are required, and the amount of steel and concrete as a turbine building increases,
There is a problem that workability such as access during periodic inspection, disassembly inspection of equipment, and carrying-in / out performance is hindered by the shielding wall 7.

On the other hand, the radiation exposure during the periodic inspection of the turbine building 1 becomes extremely small due to measures to reduce cladding and the like, and the radiation exposure during operation is mostly patrol by workers to high-dose equipment.

The present invention has been made in consideration of such points,
To reduce the amount of reinforcing steel and concrete buildings by reducing the number of shielding walls, to reduce the size of buildings by effectively utilizing the equipment placement space, and to improve access during periodic inspections, workability such as disassembly and inspection of equipment, and improvement in portability. The purpose is to provide a turbine building that can be used.

[Configuration of the invention]

(Means for Solving the Problems) The present invention provides, as means for achieving the above object, a condenser for condensing steam after driving a turbine main engine, a condensing device for performing condensate water treatment, A condensate desalination apparatus for desalination of water, a gas waste treatment facility for treating the gas while maintaining the degree of vacuum of the condenser, and a reactor pressure vessel driven by a pump driven by radioactive steam A high-dose area in which high-dose equipment such as a turbine-driven reactor feed pump that supplies water to the reactor, and low-dose equipment such as a high-pressure condensate pump and a motor-driven reactor feed pump that supplies water to the reactor pressure vessel at startup A TV camera, a microphone for sound recognition, a leak detection microphone, and a TV camera for performing shape recognition and color recognition in the high-dose area by dividing the low-dose area to be installed from a shielding wall having a substantially linear planar shape. Leak detector for Etc. is obtained so as to set up a patrol equipment with.

(Operation) In the turbine building according to the present invention, the high-dose equipment and the low-dose equipment are arranged collectively,
The high-dose area where the high-dose equipment is installed and the low-dose area where the low-dose equipment is installed are separated by a shielding wall having a substantially linear planar shape. Therefore, the number of shielding walls can be reduced, and during the periodic inspection, it is possible to improve access during the periodic inspection, operability such as disassembly and inspection of equipment, and improvement in carrying-in / out.

In addition, a patrol facility with a TV camera for shape recognition and color recognition, a microphone for sound recognition, and a leak detector for leak detection is installed in the light dose area. This is done using For this reason, it becomes possible to reduce the exposure dose of the worker.

Embodiment An embodiment of the present invention will be described below with reference to FIG.

FIG. 1 is a plan view showing an example of a turbine building according to the present invention, in which reference numeral 1 denotes a turbine building. In this turbine building 1, steam containing radioactivity generated in the reactor pressure vessel is guided by a main steam pipe to rotate the rotor of the turbine main engine. The steam after driving the turbine main engine is cooled by the condenser 2 and condensed.

The condenser 2, the condensing device 3 for performing condensate water treatment, the condensate desalination device 4 for performing desalination of condensate, and the gas for treating the gas while maintaining the degree of vacuum of the condenser 2. As shown in FIG. 1, high-dose equipment such as a waste treatment facility 5 and a turbine-driven reactor feedwater pump 6 that drives a pump with radioactive steam to supply water to a reactor pressure vessel, as shown in FIG. 8 are arranged together.

Further, the equipment after the water treatment of the condensate containing low radioactivity, that is, the high-pressure condensate pump 9 which is the equipment downstream of the condensate condenser 3 and the condensate desalinator 4, and supplies water to the reactor pressure vessel at startup. The low-dose devices such as a motor-driven reactor feed pump 10 for performing the above-mentioned operations are collectively arranged in a low-dose area 11 as shown in FIG. The low-dose area 11 and the high-dose area 8 are separated by a shielding wall 7 having a substantially linear planar shape.

In the high-dose area 8, a patrol facility equipped with a television camera for performing shape recognition and color recognition, a microphone for performing sound recognition, and a leak detector for performing leak detection is installed. Patrols are being conducted.

In particular, important inspection items for turbine-related equipment include the presence / absence of leakage, vibration, abnormal noise, and state confirmation. For these inspection items, the patrol can be automated by installing a leak detector for leaks, a microphone for abnormal sounds, and a television camera for status confirmation.

For example, a leak detector, a microphone, and a television camera 12 are installed in the vicinity of the turbine-driven reactor water supply pump 6 and the gaseous waste treatment equipment 5, which are rotating devices, because it is necessary to check all important inspection items. Have been. In addition, a leak detector 13 is installed near the condensing device 3 and the condensing device 4, which are static devices, because it is necessary to recognize the presence or absence of leakage.

 Next, the operation of the present embodiment will be described.

Patrol to the high-dose equipment is performed by remote control without using a patrol facility equipped with a television camera, a microphone, a leak detector, and the like 12 and 13 without entering the high-dose area 8. Thereby, even when patrol of the high-dose equipment during operation, the exposure dose can be significantly reduced.

In addition, since the shielding wall 7 has a substantially linear planar shape, the amount of reinforcing steel and concrete building as the turbine building 1 can be significantly reduced. Properties and transportability can be greatly improved.

〔The invention's effect〕

As described above, the present invention divides a high-dose area and a low-dose area, and provides a shielding wall having a substantially linear planar shape between them, and patrols of the high-dose area are performed by remote control using patrol equipment. Since it is performed, the amount of building can be reduced by reducing the number of shielding walls. Further, it is possible to reduce the size of the turbine building by effectively utilizing the arrangement of the equipment, improve the access during the periodic inspection, the workability such as the disassembly and inspection of the equipment, and the improvement of the carry-in / out property. In addition, it is possible to reduce the exposure of the worker.

[Brief description of the drawings]

FIG. 1 is a plan view showing an example of a turbine building according to the present invention, and FIG. 2 is a plan view showing a conventional turbine building. 1 ... Turbine building, 2 ... Condenser, 3 ... Condenser filter, 4 ... Condensate desalter, 5 ... Gas waste treatment equipment,
6: Turbine-driven reactor feed pump, 7: Shielding wall,
8 High-dose area, 9 High-pressure condensate pump, 10 Motor-driven reactor feed pump, 11 Low-dose area, 12 Leak detector, microphone, television camera, 13 Condensate apparatus.

Continuation of front page (72) Inventor Hiroshi Usui 66-2 Horikawa-cho, Saiwai-ku, Kawasaki-shi, Kanagawa Prefecture Toshiba Engineering Corporation (56) References JP-A-61-292593 (JP, A)

Claims (1)

(57) [Claims] 1. A high-dose area in which high-dose equipment is installed and a low-dose area in which low-dose equipment is installed are separated by a shielding wall having a substantially linear planar shape. Turbine building equipped with patrol equipment that can be remotely controlled.