JPS6137597B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the control of a liquid waste treatment system,
In particular, the present invention relates to a method and apparatus for controlling the operation of a liquid waste treatment system in a radioactive waste treatment facility of a nuclear power plant.

Among the waste liquids generally generated at nuclear power plants, waste liquids generated in radiation controlled areas are purified in the radioactive liquid waste treatment system to water that does not contain radioactive substances, and then are they reused within the power plant. Or, the above-mentioned radioactive liquid waste treatment system that is discharged outside the power plant usually has multiple water purification treatment lines installed in parallel, and the waste liquid is separated depending on the place of generation and treated independently, so that they do not mix with each other. It is managed so that it does not occur.

In each of the above-mentioned water purification treatment systems, waste liquid is purified using a water purification treatment device. Water purification treatment equipment usually includes a filter, a desalter, a concentrator, etc., and each water purification treatment system uses a combination of the above treatment equipment.

The filter is a device that removes solid content from waste liquid using a filter aid. A desalter is a device that removes impurity ions from waste liquid using an ion exchange resin. Further, the concentrator is a device that removes nonvolatile impurities from the waste liquid by distilling the waste liquid. Filters become clogged when solid matter adheres to the filter aid, reducing the filtration capacity.
When the differential pressure between the inlet and outlet increases, it is necessary to perform regeneration work such as backwashing the filter aid with water or replacing it with a new filter aid. Furthermore, the demineralizing capacity of the desalter decreases as the amount of ion exchange increases, so when the amount of ion exchange reaches a certain value or more, it is necessary to regenerate the ion exchange resin with a chemical solution. Here, the amount of ion exchange is often used as the integrated amount of conductivity, which is the product of the difference in electrical conductivity between the entrance and exit portions of the demineralizer and the flow rate passing through the demineralizer. Furthermore, the concentrator requires warm-up work to bring the waste liquid in the concentrator from room temperature to high temperature before operation, and if the concentration level of the waste liquid exceeds a certain value, It is necessary to drain the waste liquid. The degree of concentration here refers to the density of the concentrated waste liquid, the integrated turbidity amount which is the product of the turbidity difference between the concentrator inlet and outlet and the flow rate passing through the concentrator, and the conductivity difference between the concentrator outlet and inlet. It is a value defined by the integrated conductivity amount, which is the value obtained by integrating the product with the flow rate passing through the concentrator, or the volumetric concentration ratio, which is the ratio of the inflow rate to the concentrator and the amount of concentrated waste liquid. Use either. The various operations performed to restore processing capacity, such as the regeneration work of the filter and demineralizer and the discharge work of the concentrator, are called regeneration work, and operations are started, such as the warm-up work of the concentrator. The work that is done in advance to prepare for the process is called preparatory work. The preparation and regeneration work of the water purification treatment device is performed with the water purification treatment operation stopped.

The water purification treatment operation of waste liquid in each water purification treatment line is usually carried out in a so-called batch treatment format, which is carried out all at once after a certain amount or more of waste liquid has been collected. For the purpose of controlling radioactivity and ensuring the performance of the water purification equipment, this is done by sampling the waste liquid after collecting it to confirm the properties of the waste liquid, and to check whether the properties of the waste liquid change during the water purification treatment operation. This is to prevent However, since the start of batch water purification operation varies depending on the amount of waste liquid generated within the power plant, the operation cycle is not constant. For this reason, in conventional liquid waste treatment systems, if the operation start times of multiple water purification treatment lines overlap, sampling operations may overlap and the start of water purification treatment operations may be delayed. be. In addition, when water purification treatment becomes necessary, if the processing capacity of the water purification treatment equipment has decreased or the treated water tank is nearly full, you may need to perform regeneration work on the water purification treatment equipment or clean the treated water tank. There is also a possibility that water purification treatment operations may be delayed due to work such as transporting treated water. On the other hand, if the start of the water purification treatment operation is delayed, it becomes impossible to collect the waste liquid, which may lead to an overflow of the waste liquid, which may impede the operation of the power plant. To avoid the above-mentioned situations, conventional methods have been to start water purification treatment operations before the waste liquid tank is full, or to perform regeneration work on the water purification treatment equipment even if there is surplus treatment capacity. There is. This kind of operation not only increases the frequency of water purification treatment operation and the regeneration frequency of the water purification treatment equipment relative to the amount of waste liquid generated, but also requires a great deal of labor from the operators, and also reduces the operational efficiency of the liquid waste treatment system. There is also the disadvantage that secondary waste accompanying the regeneration work of the water purification treatment equipment is increased. Other methods include adding a backup water purification system or adding waste liquid tanks and water purification equipment in parallel, but this increases equipment costs and installation floor space, and There are disadvantages such as a decline in the utilization rate of equipment.

The present invention was made in view of the above circumstances, and
The purpose of this is to disperse the operation start times of each of the multiple water purification treatment lines at intervals of a certain amount of time or more, to ensure smooth operation of the radioactive liquid waste treatment system, and to allow each water purification treatment line to operate more smoothly. An object of the present invention is to obtain a control method and a control device for a radioactive liquid waste treatment system that can be operated efficiently by controlling according to a certain order.

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

Figure 1 shows the configuration of the liquid radioactive waste treatment system. Waste liquid generated at a nuclear power plant is collected through drain piping (not shown) in a plurality of waste liquid sumps 9 to 20 installed at various locations within the power plant. Waste liquid sump pumps 21 to 32 are attached to the waste liquid sump 9 to 20, respectively, and the waste liquid is transferred to a radioactive liquid waste treatment system indicated by 100 as a whole.
The liquid waste treatment system 100 includes water purification treatment systems 101A, 101B, 101C, and 101D and a control device 102 thereof. Each of the above water purification treatment series 101A, 101B, 101
C, 101D and the control device 102 are connected by signal lines 301A, 301B, 301C, 301D and 302A, 302B, 302C, 302D, respectively. Above waste liquid sump 9-20
, the waste liquid sump 1 is connected to the water purification treatment system 101A via the waste liquid sump pumps 21, 25, 29 and the piping 201.
0, 14, 18 are waste liquid sump pumps 22, 26,
30, the water purification treatment line 1 via piping 202
01B, the waste liquid sump 11, 15, 19 is connected to the water purification treatment system 101C via the waste liquid sump pumps 23, 27, 31 and the piping 203.
2, 16, 20 are waste liquid sump pumps 24, 28,
32, the water purification treatment line 1 via piping 204
01D, respectively. Each of the above water purification treatment series 101A, 101B, 101C, 101
The treated water treated by D is collectively transferred to pipe 2.
05 to the condensate storage tank 33 and stored there.

Next, water purification treatment systems 101A, 101B, 10 of the radioactive liquid waste treatment system 100
Each of 1C and 101D will be explained with reference to FIG. The above water purification treatment series 101A, 101
B, 101C, and 101D each have a similar configuration, so for convenience of explanation, only the water purification treatment series 101A will be described here.

In FIG. 2, the waste liquid sump 9, 13, 1
The waste liquid stored in 7 is transferred to the waste liquid sump pump 2.
Waste tank inlet valve 41 by 1, 25, 29;
The waste liquid is transferred to either one of the waste liquid tanks 43 and 44 via the waste liquid tank 42 . The waste liquid tank inlet valves 41 and 42 are controlled so that when one is open, the other is closed. When the waste liquid tank 43 or 44 becomes full, the opening and closing states of the waste liquid tank inlet valves 41 and 42 are reversed, and a stirring and mixing operation of the waste liquid in the waste liquid tank, which is now full, is started. In the stirring and mixing operation, the waste liquid tank outlet valve 45 or 46 and the waste liquid circulation valve 48 or 49 corresponding to each of the waste liquid tanks 43 and 44 are opened, and the waste liquid pump 4 is opened.
7. Here, a sampling operation is performed on the stirred and mixed waste liquid to confirm the liquid quality. After the waste liquid is stirred and mixed, the waste liquid is processed through the filter 51, the concentrator 52, and the demineralizer 53 by closing the waste liquid circulation valve 48 or 49 and opening the waste liquid transfer valve 50 and the treated water tank inlet valve 54. The water is transferred to the water tank 55. The stirring and mixing of the waste liquid, the sampling operation, and the transfer to the treated water tank are collectively referred to as water purification treatment operation.

When the treated water tank 55 becomes full, the treated water tank inlet valve 54 is closed, and the treated water pump 56 is closed.
The treated water is stirred and mixed through the treated water circulation valve 57. Here, the stirred and mixed treated water is sampled again to confirm the liquid quality. After the treated water is stirred and mixed, the treated water circulation valve 57 is closed, the treated water transfer valve 58 is opened,
The treated water is transferred to the condensate storage tank 33. The stirring and mixing of the treated water in the treated water tank 55, the sampling operation, and the transfer to the condensate storage tank 33 are collectively referred to as a treated water transfer operation.

The filter 51, concentrator 52 and demineralizer 53
A filter regeneration device 151, a concentrator preparation and regeneration device 152, and a demineralizer regeneration device 153 are attached to each of the devices, and perform regeneration and preparation work for the filter 51, concentrator 52, and demineralizer 53, respectively. .

Further, the waste liquid tanks 43 and 44 have water level gauges 117 and 118, respectively, the filter 51 has a flow meter 119 at the inlet and a differential pressure gauge 120 between the inlet and outlet, and the concentrator 52 has a flow meter 121 at the inlet. , conductivity meter 12
2. A turbidity meter 123, a density meter 124 at the main body, a conductivity meter 125 at the outlet, and a turbidity meter 126 are installed in the demineralizer 1.
09 has a flowmeter 127 and a conductivity meter 12 at the inlet.
8. A conductivity meter 129 is installed at the outlet of the treated water tank 1.
11 is provided with a water level gauge 130, respectively. Water level gauges 117, 118 for the waste liquid tanks 43, 44
are the water levels of the waste liquid in the waste liquid tanks 43 and 44, respectively, the inlet flow meter 119 of the filter 51, and the differential pressure gauge 120 between the inlet and outlet of the filter 51 are the flow rate passing through the filter 51 and the differential pressure between the inlet and outlet, respectively, and the concentrator The inlet flow meter 121, conductivity meter 122, turbidity meter 123, main body density meter 124, outlet conductivity meter 125, and turbidity meter 126 of 52 measure the flow rate passing through the concentrator 52 and the conductivity of the concentrator inflow, respectively. The inlet flowmeter 127 of the demineralizer 53, the conductivity meter 128,
The outlet conductivity meter 129 measures the flow rate passing through the demineralizer 53, the conductivity of the demineralizer inflow liquid, and the conductivity of the demineralizer outlet liquid. This is to detect the water level of each treated water. Above water level gauge 117,1
18, flow meter 119, differential pressure gauge 120, flow meter 12
1, conductivity meter 122, turbidity meter 123, density meter 12
4, conductivity meter 125, turbidity meter 126, flow meter 12
7. Conductivity meter 128, 129 and water level gauge 130
The respective output signals are input to the control device 102 via signal lines 317, 318, . . . 330, respectively. Further, the output signals of the control device 102 include the waste liquid tank inlet valves 41 and 42, the waste liquid tank outlet valves 45 and 46, the waste liquid pump 47, the waste liquid circulation valves 48 and 49, the waste liquid transfer valve 50, the filter regenerating device 151, and the concentration vessel preparation regeneration device 152, desalination regeneration device 153, treated water tank inlet valve 54, treated water pump 56, treated water circulation valve 57, treated water transfer valve 58
For each signal line 341, 342, 345, 3
46,347,348,349,350,35
1,352,353,354,356,357,
358, and controls each of the above devices.

The signal line 301A in FIG. 1 collectively shows the signal lines 317, 318, 330, and the signal line 302A in FIG. 347,3
48,349,350,351,352,35
3,354,356,357,358 are shown together.

The above explanation was given for the water purification treatment series 101A, but other water purification treatment series 101B, 101
C and 101D also have the same configuration. That is, although not shown in FIG. 2, the water purification treatment series 101B, 101C, 101D
are waste liquid tanks 43B, 44B, 43C, 44, respectively, similar to the water purification treatment series 101A.
C, 43D, 44D, filter 51B, 51C, 5
1D, concentrator 52B, 52C, 52D, desalter 5
3B, 53C, 53D, treated water tank 55B, 5
5C, 55D, waste liquid tank inlet valve 41B, 42
B, 41C, 42C, 41D, 42D, waste liquid pump 47B, 47C, 47D, waste liquid circulation valve 48B,
49B, 48C, 49C, 48D, 49D, waste liquid transfer valve 50B, 50C, 50D treated water tank inlet valve 54B, 54C, 54D, treated water pump 56
B, 56C, 56D, treated water circulation valve 57B, 57
C, 57D, treated water transfer valve 58B, 58C, 58
D, filter regeneration device 151B, 151C, 151
D. Concentrator preparation regeneration device 152B, 152C, 1
52D, demineralizer regeneration device 153B, 153C, 1
53D, and level gauges 117B, 118B, 11
7C, 118C, 117D, 118D, flowmeter 1
19B, 119C, 119D, differential pressure gauge 120B,
120C, 120D, flowmeter 121B, 121
C, 121D, turbidimeter 122B, 125B, 12
2C, 125C, 122D, 125D, conductivity meter 123B, 126B, 123C, 126C, 12
3D, 126D, density meter 124B, 124C, 1
24D, flowmeter 127B, 127C, 127D,
Conductivity meter 128B, 129B, 128C, 129
C, 128D, 129D, liquid level gauge 130B, 13
It is composed of 0C and 130D. Here, each of the above water purification treatment series 101B, 101C, 101
The output signals of the respective meters attached to each of the water purification treatment series 101A are transmitted through signal lines 317 and 3 connected to the control device 102 as output signals of the respective meters of the water purification treatment series 101A.
Signal line 3 numbered corresponding to 18...330
17B, 318B……330B, signal line 317
C, 318C...330C, signal line 317D,
318D……Control device 102 via 330D
has been entered. In FIGS. 1 and 2, the signal lines 317B, 318B...330B are combined into a signal line 301B, and the signal lines 317C,
318C……330C together and connect the signal line 301
C, the above signal lines 317D, 318D...33
0D are collectively shown as a signal line 301D. Further, the output signal from the control device 102 is transmitted to the signal lines 341 and 3 for the water purification processing series 101A.
42,345,346,347,348,34
9,350,351,352,353,354,
356, 357, 358, the water purification treatment series 101B, 101
For signal lines 341B and 101D, respectively.
342B, 345B, 346B, 347B, 34
8B, 349B, 350B, 351B, 352
B, 353B, 354B, 356B, 357B,
358B, signal lines 341C, 342C, 345
C, 346C, 347C, 348C, 349C,
350C, 351C, 352C, 353C, 35
4C, 356C, 357C, 358C, signal line 3
41D, 342D, 345D, 346D, 347
D, 348D, 349D, 350D, 351D,
352D, 353D, 354D, 356D, 35
7D and 358D. In FIGS. 1 and 2, the above-mentioned signal lines are collectively shown as signal lines 302B, 302C, and 302D.

Next, the configuration of the control device 102 will be explained.

FIG. 3 shows a block diagram of the control device 102. As shown in FIG. The control device 102 includes a signal selection section 20
3. Operation start prediction unit 204, process amount calculation unit 2
05A, 205B, 205C, 205D and operation command output section 206A, 206B, 206C, 2
06D.

In the signal selection unit 203, each waste liquid tank water level signal of each water purification treatment series 101A, 101B, 101C, 101D is sent to signal lines 317, 31, respectively.
8, 317B, 318B, 317C, 318C,
317D, 318D, and the operation command output parts 206A, 206B, 206C,
The output signals of 206D are connected to signal lines 309A and 30, respectively.
9B, 309C, and 309D, and the water level signal of the tank whose inlet valve is open among the two waste liquid tanks of each water purification treatment system is input to the signal lines 303A, 303B, respectively. ,303
The water level signal of the tank with the inlet valve in the closed state is output to signal lines 313A and 313, respectively.
It is output to B, 313C, and 313D. The signal lines 303A, 303B, 303C, and 303D are connected to the input terminals of the operation start prediction unit 204, and the signal lines 313A, 313B, 313C, and 313D are connected to the operation command output units 206A, 206B, and 206, respectively.
C and 206D, respectively. Note that a signal from a limit switch of the valve may be used to detect whether the inlet valve of the waste liquid tank is open or closed.

The operation start prediction unit 204 is connected to the signal line 303.
Each waste liquid tank water level signal input via A, 303B, 303C, 303D is calculated, and each water purification treatment series 101A, 101B, 101C, 10
Outputs an output that predicts the start time of 1D water purification treatment operation. This output is connected to the signal lines 304A, 304B,
They are connected to operation command output units 206A, 206B, 206C, and 206D via 304C and 304D, respectively. In addition, the process amount calculation unit 205
A indicates a filter inlet flow meter 119, a filter inlet/outlet differential pressure gauge 120, a concentrator inlet flow meter 121, and a concentrator inlet conductivity meter 1 of the water purification treatment line 101A.
22, concentrator inlet turbidity meter 123, concentrator density meter 124, concentrator outlet conductivity meter 125, concentrator outlet turbidity meter 126, demineralizer inlet flow meter 127,
The output signals of the demineralizer inlet conductivity meter 128, demineralizer outlet conductivity meter 129, and treated water tank water level gauge 130 are connected to signal lines 317, 318, 3, respectively.
30, and calculates each of the above-mentioned input signals to detect that it is necessary to perform regeneration work on the filter 51, concentrator 52, and demineralizer 53, and to perform treatment water transfer operation in the treated water tank. Each output signal is connected to signal line 3.
05A, 306A, 307A, and 308A are output to the operation command output section 206A. The other process amount calculation units 205B, 205C, and 205D have similar configurations.

Further, a water purification treatment operation start predicted time signal is input to the operation command output unit 206A via a signal line 304A, and a signal line 305A, 306A, 3
07A, 308A respectively filter, concentrator,
Input a signal indicating that it is necessary to start the regeneration work of the demineralizer and the start of the treated water transfer operation of the treated water tank, and at the respective required times, water purification treatment line 1
01A waste liquid tank inlet valves 41, 42, waste liquid tank outlet valves 45, 46, waste liquid pump 47, waste liquid circulation valves 48, 49, waste liquid transfer valve 50, filter regeneration device 151, concentrator preparation regeneration device 152, desalter Regeneration device 153, treated water tank inlet valve 54, treated water pump 56, treated water circulation valve 57, treated water transfer valve 58
For each signal line 341, 342, 345, 3
46,347,348,349,350,35
1,352,353,354,356,357,
An output signal is provided via 358. In addition, the operating status of the waste liquid tank inlet valves 45 and 46 is indicated by the signal line 309A.
The signal is output to the signal selection section 203 via the signal selection section 203. The other driving command output units 206B, 206C, and 206D have similar configurations.

Next, the configuration of each part of the control device 102 will be explained.

FIG. 4 shows the configuration of the signal selection section 203. The signal selection section 203 includes switching circuits 403A, 40
3B, 403D, and the above switching circuit 403
A, 403B, 403C, 403D have water purification treatment series 101A, 101B, 101C, 1, respectively.
The waste liquid tank water level signal of 01D is connected to the signal line 31 respectively.
7,318, signal lines 317B, 318B, signal lines 317C, 318C, signal lines 317D, 318D
is input via the operation command output section 206.
The output signals of A, 206B, 206C, and 206D are connected to signal lines 309A, 309B, 309C, and
It is input via 309D. The switching circuits 403A, 403B, 403C, 403D are connected to the operation command output units 206A, 206B, 206
It is input from C, 206D. Depending on the opening/closing signal of the waste liquid tank inlet valve, the water level signal of the waste liquid tank on the side where the waste liquid tank inlet valve is open is sent to each signal line 303.
The water level signal of the waste liquid tank on the side where the waste liquid tank inlet valve is closed is output to the operation start prediction unit 204 via signal lines 313A, 313B, 313C, and 313D through A, 303B, 303C, and 303D, respectively.
The operation command output unit 206A, 206 via
It is output to B, 206C, and 206D.

Next, the configuration of the operation start prediction unit 204 will be explained with reference to FIG.

The waste liquid tank water level signal selected by the signal selection 203 is transmitted through signal lines 303A, 303B, 3
Arithmetic circuits 404A, 4 via 03C, 303D
It is input to 04B, 404C, and 404D. The above calculation circuits 404A, 404B, 404C, 40
4D includes memory circuits 409A, 409B, 4, respectively.
09C and 409D are attached, and the output of a clock 410 is inputted via a signal line 510. The above calculation circuits 404A, 404B, 404C, 40
4D calculates the filling time of each waste liquid tank using the following formula. That is, in FIG. 6, if the water level of the waste liquid tank at past time t _p is L _p and the water level of the waste liquid tank at present time t _p is L _p , the rise in the water level of the tank increases approximately in proportion to time, so the waste liquid The time t _s when the tank reaches the full water level L _s is
It can be obtained using equation (1). Here t _p , L _p
is stored in the memory circuit 409A, t _p is the output of the clock 410, and L _p is the signal line 303A, 303.
B, 303C, and 303D, all of which are known.

t _s =L _s -L _p /L _p -L _p (t _p -t _p )+t _p ...(1
) Note that the full water time t _s can also be determined by sequentially storing the time and the waste liquid tank water level using a control computer and performing statistical processing on the amount of increase in the water level. The above calculation circuits 404A, 404
The predicted full-water time signals t _s1 , t _s2 , t _s3 , and t _s4 of each water purification processing series calculated by B, 404C, and 404D are connected to signal lines 504A, 504B, 504C, and 50, respectively.
Low value passing circuits 405A, 405B,
It is output to 405C and 405D.

Low value passing circuit 405A, 405B, 405C,
405D receives the predicted time signals t _s1 to t _s4 and outputs a signal only when the predicted time is less than or equal to a certain time ΔT ₁ from the current time. These outputs are sent to subtraction circuits 406A, 406B, 406C, 4 via signal lines 505A, 505B, 505C, and 505D, respectively.
06D and comparison calculation circuits 407A, 407B,
The signals are transmitted to respective corresponding circuits of 407C and 407D. The above low value passing circuit 405A, 405
B, 405C, and 405D are predicted full water times t _s1 ~
This is provided to allow subsequent calculations to be performed only for water purification treatment series for which t _s4 is within ΔT ₁ from the current time.

Subtraction circuits 406A, 406B, 406C, 40
6D, each of the above low value passing circuits 405A, 405
The predicted full water time signals passing through B, 405C, and 405D are sent to signal lines 505A, 505B, and 505, respectively.
C, 505D, and the signal line 50
Correction value calculation circuits 408A, 408B, 408C, 4 via 8A, 508B, 508C, 508D
The output signals of 08D are respectively input. The subtraction circuits 406A, 406B, 406C, and 406D calculate the corresponding correction value calculation circuits 408A, 408B, and 408 from the input signals of the predicted full water time, respectively.
The input signals from C and 408D are subtracted, and the calculation result is used as the predicted water purification operation start time to be sent to the operation command output units 206A, 206B, and 206 via signal lines 304A, 304B, 304C, and 304D, respectively.
C, output to 206D. This operation is to output a time that is earlier than the predicted full water time by the correction value input as the predicted water purification treatment operation start time. Note that the signal lines 304A, 304B, 304
C, 304D are branched at points a, b, c, and d, respectively, and are connected to comparison calculation circuits 407A, 407B, 407C,
407D. That is, the comparison calculation circuit 4
07A has signal lines 304B, 304C, 304D
However, the signal line 304A,
304C, 304D, signal lines 304A, 304B, 304D to the comparison calculation circuit 407C, signal lines 304A, 304 to the comparison calculation circuit 407D.
B and 304C are connected to each other.

Comparison calculation circuits 407A, 407B, 407C,
407D includes the arithmetic circuits 406A, 406
The output signals of the low pass circuits 405A, 406C, 406D are inputted by connecting the signal lines 506A, 506B, 506C, 506D as described above, and the output signals of the low value passing circuits 405A, 405B, 405C, 405D are input as the respective signal lines. Lines 505A, 505B, 50
It is input via 5C and 505D. The above comparison calculation circuits 407A, 407B, 407C, 40
7D are the low value passing circuits 405A and 405, respectively.
For input signals from B, 405C, 405D,
The next largest signal after that input signal is selected from among the input signals from the subtraction circuits 406A, 406B, 406C, and 406D and subtracted to produce an output signal.
B, 507C, and 507D are output to correction value calculation circuits 408A, 408B, 408C, and 408D, respectively. The comparison calculation circuit calculates, for each water purification treatment series, the time difference between the predicted full water time of the own series and the predicted start time of the water purification treatment operation of the other series, which will start operation next to the own series.

Correction value calculation circuits 408A, 408B, 408
The output signals of the comparison calculation circuit 407 are connected to signal lines 507A, 507B, and 50C and 408D, respectively.
It is input via 7C and 507D. The above correction value calculation circuits 408A, 408B, 408C, 4
08D calculates a correction value for the predicted water purification operation start time only when the input signal is below a certain value ΔT ₂ , and connects the signal lines 508A, 508B, and 5 to each other.
Each of the subtraction circuits 40 through 08C and 508D
Output to 6A, 406B, 406C, 406D.

The above comparison calculation circuits 407A, 407B, 407
C, 407D and correction value calculation circuit 408A, 4
According to 08B, 408C, and 408D, the predicted start time of water purification treatment operation for each water purification treatment line is △
A correction value is calculated to have a time difference of T2 _or more, and the subtraction circuits 406A, 406B, 406
C, 406D correction input signal.

Next, process amount calculation units 205A, 205B,
The configurations of 205C and 205D will be explained. Process amount calculation parts 205A, 205B, 205C,
205D have the same configuration, so here, the process amount calculation unit 205A corresponding to the water purification treatment series 101A will be described.

As shown in FIG. 7, the process amount calculation unit 205A includes a differential pressure correction circuit 411, subtraction circuits 414, 419,
427, multiplication circuits 415, 420, 428, integration circuits 416, 421, 429, setting comparison circuit 41
2,417, 422, 424, 430, 432 and a logic circuit 426.

The differential pressure correction circuit 411 includes the filter inlet flow meter 119 and the filter inlet/outlet differential pressure gauge 1.
Twenty output signals are input via signal lines 319 and 320, respectively, and a standard flow rate value Q ₀ is input to the terminal. As shown in FIG. 8, the flow rate passing through the filter 51 and the differential pressure dp between the inlet and outlet are expressed as dp=
There is a relationship of kQ ² . Here, k is a constant. The number of times of differential pressure correction 411 is the input differential pressure signal.
From dp ₁ and flow rate signal Q ₁ , a calculation is performed using equation (2) to correct the differential pressure value dP ₀ at standard flow rate Q ₀ ,
The corrected differential pressure signal dP ₀ is output to the setting comparison circuit 412 via the signal line 511.

dP=(Q ₀ /Q ₁ ) ² dP ₁ (2) The differential pressure set value dP _S for starting the filter regeneration work is input to the other terminal of the setting comparison circuit 412. . The setting comparison circuit 412 generates an output signal indicating that the filter differential pressure is high when the input corrected differential pressure signal dP ₀ becomes larger than the differential pressure set value dP _S , and sends the operation command via the signal line 305A. It is output to the output section 206A.

The output signals of the concentrator inlet conductivity meter 122 and the concentrator outlet conductivity meter 125 are input to the subtraction circuit 414 via signal lines 322 and 325, respectively. The subtraction circuit 414 calculates the difference (C _CI - C _CO ) between the inlet conductivity signal C _CI and the outlet conductivity signal C _CO of the concentrator 52, and transfers the conductivity difference signal resulting from the calculation to the signal line. Multiplying circuit 4 via 514
It is output to 15. The multiplication circuit 415 includes:
The output signal of the concentrator inlet flow meter 121 is inputted via the signal line 321 together with the conductivity difference signal. The multiplication circuit 415 calculates the product F _C (C _CI - C _CO ) of the conductivity difference signal (C _CI - C _CO ) and the flow rate signal F _C and integrates the calculation result via a signal line 515. It is output to circuit 416. The integration circuit 416 is connected to the multiplication circuit 415.
The calculation output is integrated with respect to time, that is, the calculation of equation (3) is performed, and the resultant conductivity integrated amount C _C is output to the setting comparison circuit 417 via the signal line 516.

C _C =∫ ^T _O F _C (C _CI −C _CO ) dt ......(3) The other input terminal of the setting comparison circuit 417 is connected to the conductivity integrated amount for starting the regeneration work of the concentrator 52. Setting value C _CS has been input. The setting comparison circuit 417 receives the input conductivity integrated amount C _C
When the integrated conductivity amount becomes higher than the set value _CCS , an output signal indicating the integrated conductivity of the concentrator is generated, and the signal line 517
is output to logic circuit 426 via.

Further, the output signals of the concentrator inlet turbidity meter 123 and the concentrator outlet turbidity meter 126 are input to the subtraction circuit 419 via signal lines 323 and 326, respectively. The subtraction circuit 419 calculates the difference ( _TUCI - T _UCO ) between the inlet turbidity signal T _UCI and the outlet turbidity signal T _UCO of the concentrator 52, and sends the turbidity difference signal of the calculation result to the signal line. 519 to the multiplication circuit 420. The output signal of the concentrator inlet flow meter 121 is input to the multiplication circuit 420 via the signal line 321 along with the conductivity difference signal. The multiplication circuit 420 receives the turbidity difference signal (T
_Product F _{C ( T UC
I} -T _UCO ) is calculated, and the calculation result is output to the integrating circuit 421 via the signal line 520. The integration circuit 421 integrates the calculation output of the multiplication circuit 420 with respect to time, that is, calculates the equation (4), and sends the resultant turbidity integrated amount T _UC to the setting comparison circuit 422 via the signal line 521. It is outputting.

T _UC =∫ ^T _O F _C (T _UCI − T _UCO ) dt……(3) The other input terminals of the setting comparison circuit 422 are as follows.
The turbidity integrated amount set value T _UCS for starting the regeneration work of the concentrator 52 has been input. The setting comparison circuit 422 outputs an output signal indicating the concentrator turbidity integration amount when the input turbidity integration amount T _UC exceeds the turbidity integration amount setting value T _UCS , and sends the output signal to the logic circuit 426 via the signal line 522. Output.

The setting comparison circuit 424 includes the concentrator density meter 1
The output signal of No. 24 is inputted via the signal line 324, and the density setting value D _CS for starting the regeneration operation of the concentrator 52 is inputted to the other input terminal of the setting comparison circuit 424. Setting comparison circuit 424
, the input density signal D _C is the density setting value D _CS
When the concentrator density is higher than that, an output signal indicating high concentrator density is generated and outputted to the logic circuit 426 via the signal line 524.

The logic circuit 426 receives the output signals of the setting comparison circuits 417, 422, and 424, and the three
When there is any one of the two input signals, the concentrator condensation completion output signal is generated, and the signal line 30
6A to the driving command output section 206A.

The subtraction circuit 427 also includes the demineralizer inlet conductivity meter 128 and the demineralizer outlet conductivity meter 12.
Nine output signals are input via signal lines 328 and 329, respectively. The subtraction circuit 427 receives the inlet conductivity signal C _DI and the outlet conductivity signal C _DO of the demineralizer 53, calculates the difference (C _DI - D _DO ), and generates a conductivity difference signal as a result of the calculation. is output to the multiplication circuit 428 via the signal line 527. The multiplication circuit 428 transmits the output signal of the demineralizer inlet flow meter 127 to the signal line 32 along with the conductivity difference signal.
It is input via 7. The multiplication circuit 428 is
Receiving the conductivity difference signal (C _DI −C _DO ) and the flow rate signal _FD , calculating the product F _D (C _DI −C _DO );
The calculation result is sent to the integration circuit 429 via the signal line 528.
It is output to. The integration circuit 429 integrates the calculation output of the multiplication circuit 428 over time,
That is, the calculation of equation (5) is performed, and the conductivity integrated amount C _D that is the result is outputted to the setting comparison circuit 430 via the signal line 289.

C _D =∫ ^T _O F _D (C _DI - C _DO ) dt (5) The other input terminals of the setting comparison circuit 430 are as follows:
A conductivity integration amount setting value C _DS for starting the regeneration work of the desalination device 53 is input. The setting comparison circuit 430 outputs a large output signal for the demineralizer conductivity integration amount when the input conductivity integration amount C _D exceeds the conductivity integration amount setting value C _DS , and outputs the operation command via the signal line 307A. It outputs to section 206A.

The output signal of the treated water tank water level gauge 130 is input to the setting comparison circuit 432 via the signal line 330. A treated water tank high water level setting value L _SH for starting the treated water transfer operation of the treated water tank 55 is input to the other input terminal of the setting comparison circuit 432 . The setting comparison circuit 432 is
When the input treated water tank water level signal L _S becomes equal to or higher than the high water level setting value L _SH , an output signal indicating the treated water tank water level is generated and outputted to the operation command output section 206A via the signal line 308A.

Although the configuration of the process amount calculation section 205A has been described above, other process amount calculation sections 205B,
205C and 205D also have the same configuration.

Next, operation command output parts 206A, 206B, 2
The configurations of 06C and 206D will be explained. The above operation command output parts 206A, 206B, 206C,
206D have the same configuration, so here, the operation command output section 206A will be explained.

The operation command output section 206A includes setting comparison circuits 441, 443, 447, 45 as shown in FIG.
0,452,456,459, logic circuit 445,
449, 454, 458, 461 and drive output circuits 446, 455, 462.

The setting comparison circuit 441 receives the waste liquid tank water level output signal from the signal selection section 203 via the signal line 313.
It is input via A. Further, the waste liquid tank low water level setting value _LCL is input to the other input terminal of the setting comparison circuit 441. Setting comparison circuit 441
emits an output signal when the waste liquid tank water level signal is greater than a waste liquid tank low water level set value _LCL ;
It is output to the logic circuit 445 via the signal line 541. Setting comparison circuit 443, 447, 450, 45
A predicted water purification operation start time output signal from the operation start prediction section 204 is inputted to each of 2, 456, and 459 via a signal line 304A.

In addition, the setting comparison circuits 443, 447, 45
The other input terminals of 0, 452, 456, and 459 each indicate the current time T for starting the water purification treatment operation.
_P , and a time setting value T for starting filter regeneration work, concentrator preparation work, concentrator regeneration work, demineralizer regeneration work, and treated water transfer operation a certain period of time earlier.
_F , T _CP , T _CR , T _D , and T _S are input. That is, the setting comparison circuits 443, 447, 450, 45
No. 2,456,459 individually compares the time _ts from the present time to the predicted water purification operation start time with the set values T _P , T _F , T _CP , T _CR , T _D , T _S , The time t _s is the time setting value T _P , T _F , T _CP , T _C
When _R , T _D and T _S become smaller, output signals are output respectively. This output signal is transmitted through signal lines 543 and 54, respectively.
Logic circuits 445, 449, 455, 454, 45 through 7,550, 552, 556, 559
8,461.

The logic circuit 445 includes the setting comparison circuit 441.
and 443 output signals are output from signal lines 541 and 443, respectively.
543. The above logic circuit 4
45 emits an output signal when the above two input signals are input at the same time, and outputs it to the drive output circuit 446 via the signal line 545. The drive output circuit 446 operates in response to the output signal of the logic circuit 545, and operates the waste liquid tank inlet valves 41 and 42, the waste liquid tank outlet valves 45 and 46, the waste liquid pump 47, the waste liquid circulation valves 48 and 49, and the waste liquid transfer valve. 50, signal lines 341, 342, respectively for the treated water tank inlet valve 54;
345, 346, 347, 348, 349, 35
0,354 to issue a drive signal. At the same time, the waste liquid tank inlet valves 41, 4
2 is output to the signal selection section 203 via a signal line 309A.

The logic circuit 449 includes the setting comparison circuit 447.
output signal and the process amount calculation section 405A
The filter differential pressure high output signal is connected to signal lines 547 and 3, respectively.
Input via 05A. The above logic circuit 449
emits an output signal when the above two input signals are input at the same time, and outputs a filter regeneration command signal to the filter regeneration device 151 via the signal line 351.

The logic circuit 454 includes the setting comparison circuit 452.
output signal and the process amount calculation section 405A
The concentrator concentration completion output signals of the concentrators 552 and 552 respectively
306A. The above logic circuit 45
4 emits an output signal when the above two input signals are input simultaneously, and outputs it to the drive output circuit 455 via the signal line 554. The drive output circuit 455
includes a setting comparison circuit 450 and the logic circuit 4.
54 output signals are input. The drive output circuit 455 outputs a concentrator preparation command signal to the input signal from the setting comparison circuit 450 to the logic circuit 4.
In response to input signals from 54, concentrator regeneration command signals are output to the concentrator preparation and regeneration device 152 via signal lines 352, respectively.

The logic circuit 458 includes the setting comparison circuit 456.
The output signal of the demineralizer conductivity integrated amount large output signal of the process amount calculating section 405A is connected to the signal line 55.
6,307A. The logic circuit 458 generates an output signal when the above two input signals are input at the same time, and outputs a desalination device regeneration command signal to the desalination device regeneration device 153 via the signal line 353.

The logic circuit 461 includes the setting comparison circuit 459.
The output signal and the high output signal of the treated water tank water level of the process amount calculation unit 405A are connected to the signal lines 559 and 559, respectively.
308A. The logic circuit 461 issues a treated water transfer operation start command signal when the two input signals are input at the same time,
It is output to the drive output circuit 462 via the signal line 561. The drive output circuit 462 operates in response to an output signal from the logic circuit 461, and drives the treated water pump 56, treated water circulation valve 57, and treated water transfer valve 58 via signal lines 356, 357, and 358, respectively. emitting a signal.

The above is a description of the configuration of the operation command output unit 206A of the water purification treatment series 101A, but the operation command output units 206B, 206C, and 206D of the other water purification treatment series 101B, 101C, and 101D have similar configurations. be.

Next, the operation of the present invention will be explained.

Each water purification treatment series 101A, 101B, 101
The temporal changes in the amount of waste liquid generated in C and 101D are shown in the waste liquid tanks 43, 44, 43B, 44B, 43 of each series.
It can be obtained by measuring the liquid level of one of C, 44C, 43D, and 44D from which waste liquid is collected.

The signal selection unit 203 of the control device 102 controls the liquid level gauges 117, 118, 117B, 118 of the waste liquid tank.
Among the output signals of B, 117C, 118C, 117D, and 118D, the liquid level signal of the waste liquid tank collecting waste liquid is sent to the operation start prediction unit 204, and the liquid level signal of the waste liquid tank in which waste liquid is being operated for water purification processing is sent to the operation start prediction unit 204. The operation command output units 206A, 206B, 20 of each series
6C and 206D, respectively.
Here, whether or not the waste liquid tank is collecting waste liquid is determined by each of the operation command output units 206A, 206B,
206C, 206D to waste liquid tank inlet valve 41,
42, 41B, 42B, 41C, 42C, 41
The determination is made based on the presence or absence of the drive output signal output to D and 42D.

The liquid level signal of the waste liquid tank collecting the waste liquid of each water purification process line is selected by the signal selection unit 203 and input to the operation start prediction unit 204. The operation start prediction unit 204 sequentially stores the time and the liquid level value at that time, and predicts the time when the waste liquid tank reaches full water by calculating the stored values. Furthermore, the predicted values of the full water arrival time predicted for each series are compared, and if the predicted full water arrival times of two series are within a certain time (△T ₂ ), the full water arrival time of the series that will be full at an earlier time is compared. An apparent correction calculation is performed so that the time is a certain time (ΔT ₂ ) before the time when the other series reaches full water. If the full-water arrival times of the two series are separated by more than the above-mentioned certain time (ΔT ₂ ), the above-mentioned correction calculation is not performed. If necessary, repeat the above correction calculation for the apparent corrected full-water arrival time, so that all the full-water arrival times have an interval longer than the above-mentioned fixed time (△T ₂ ), and The time when full water is reached is outputted as the predicted time to start water purification treatment operation for each series. Note that the above calculation is performed only for series whose full water arrival time is within a certain time (ΔT ₁ ) from the current time. The predicted water purification treatment operation start time of each series is output to the operation command output units 206A, 206B, 206C, and 206D of each series.

In addition, each of the water purification treatment series 101A, 101
The process amount signals detected in B, 101C, and 101D are input to process amount calculation units 205A, 205B, 205C, and 205D corresponding to each series. That is, water purification treatment series 101
Filter inlet flowmeter 11 detected at A
9, filter differential pressure gauge 120, concentrator inlet flow meter 121, concentrator inlet turbidity meter 122, concentrator inlet conductivity meter 123, concentrator density meter 12
4. Concentrator outlet turbidity meter 125, concentrator outlet conductivity meter 126, demineralizer inlet flow meter 127, demineralizer inlet conductivity meter 128, demineralizer outlet conductivity meter 129, processing Each output signal of the water tank level gauge 130 is input to the process amount calculation section 205A. Similarly, each water purification treatment series 101B, 1
The process amount signals detected at 01C and 101D are processed by process amount calculation units 205B, 205C, and 01C, respectively.
It is input to 205D. The above process amount calculation section 2
In 05A, 205B, 205C, and 205D, the above-mentioned process amount signal is processed, and when the differential pressure value converted at the standard flow rate using the relationship of equation (2) exceeds a certain value dP _s , the filter differential pressure high When any of the density, turbidity integrated amount, and conductivity integrated amount of the concentrator reaches a certain value D _cs , T _UCS , C _CS or higher, the concentrator concentration completion signal is determined, and the demineralizer conductivity is determined. When the integrated amount exceeds a certain value _CDS , a demineralizer conductivity integrated amount large signal is output, and when the treated water tank liquid level signal exceeds a certain value _LSH , a treated water tank water level high signal is output. . The above output signal is transmitted to the operation command output units 206A, 206B, 206 corresponding to each series.
C and 206D, respectively.

Operation command output section 206A, 206B, 206
C, 206D are the predicted water purification treatment operation start times of each series inputted from the operation start prediction unit 204, and the process amount calculation units 205A, 205B,
By performing logical operations in combination with the filter differential pressure high signal, concentrator concentration completion signal, demineralizer conductivity integrated amount large signal, and treated water tank liquid level high signal input from 205C and 205D, each purified water Issues a command output signal to operate the conversion processing train. In other words, if there is a filter differential pressure high signal when the predicted time to start water purification treatment is within a certain value T _F from the present time, the filter regeneration command signal is sent to a point where the predicted time to start water purification treatment is constant from the present time. If there is a concentrator concentration completion signal when the value is within the value T _CR , a concentrator regeneration command signal is issued, and when the predicted water purification operation start time is within a certain value T _D from the current time, the demineralizer conductivity integration is executed. If there is a high volume signal, a demineralizer regeneration command signal will be sent, and if there is a high level signal in the treated water tank when the predicted time to start water purification treatment operation is within a certain value T _S from the current time, the treated water transfer operation will be started. Each command signal is output. Also, when the predicted water purification operation start time is within a certain value T _CP from the current time, a concentrator preparation command signal is sent, and when the water purification operation start time predicted coincides with the current time T _P , a water purification operation start command signal is sent. are output respectively. The filter regeneration command signal is transmitted to the filter regeneration device 15 of each series.
1,151B, 151C, and 151D, and the above-mentioned concentrator regeneration command signal and concentrator preparation command signal are sent to the concentrator preparation and regeneration device 1 of each series.
52, 152B, 152C, 152D, and the desalination device regeneration command signal is used to operate the desalination device regeneration devices 153, 153B, 153C,
153D, and the treated water transfer operation command signal is sent to the treated water pumps 56,
56B, 56C, 56D, treated water circulation valve 57, 5
7B, 57C, 57D, treated water transfer valve 58, 58
B, 58C, 58D, respectively, and the water purification treatment operation command signal is used to operate the waste liquid tank inlet valves 41, 42, 41B, 42B,
41C, 42C, 41D, and 42D, and the waste liquid tank outlet valves 45, 4.
6, 45B, 46B, 45C, 46C, 45D,
46D, waste pump 47, 47B, 47C, 47
D, waste liquid circulation valve 48, 49, 48B, 49B, 4
8C, 49C, 48D, 49D, waste liquid transfer valve 5
0, 50B, 50C, and 50D, respectively.

As a result of the above action, the control device 102 determines that the processing capacity has reached the limit value by performing the preparation work of each water purification treatment device and calculating the process amount at a certain time before the start of the water purification treatment operation. The regeneration work of the water purification treatment equipment and the treatment water transfer operation of the treated water tank determined to have collected a certain amount or more are started, and each water purification treatment line is operated at intervals of a certain time or more. Control is performed to start water purification treatment operation.

FIG. 10 shows an example in which the operation start time of the radioactive liquid waste treatment system 100 is controlled by the control device 102. Water purification treatment series 101A, 101
The water levels in the waste liquid tanks B, 101C, and 101D have been changing as a, b, c, and d, respectively, up to the present time _t0 . At this time, the predicted time when each waste liquid tank reaches the full water level L _S is ta,
tb, tc, td. In the water purification treatment series 101D, since td-to>ΔT ₁ , the water purification treatment operation start time is not output. In addition, the time difference Δtb between the predicted full water times of the water purification treatment trains 101B and 101C is Δtb=tc−tb<ΔT ₂ , so the water purification treatment operation start time of the water purification treatment train 101B is
It is output as tb', which is tb advanced by (△T ₂ - △tb). At this time, the predicted full water time tc is output as is as the water purification process operation start time of the water purification process line 101C. In addition, water purification treatment series 10
The time difference △ta between the predicted full water time of 1A and the corrected predicted full water time of the water purification treatment series 101B is △ta
＝tb′−ta＞△T ₂ , so water purification treatment series 1
As the water purification treatment operation start time of 01A, the predicted full water time ta is output as is. As mentioned above, water purification treatment series 101A, 101B, 101
The water purification treatment operation start times of C are output as ta, tb', and tc, which are each distributed over ΔT _{2 or} more.

Next, FIG. 11 shows an example in which the water purification process line of the radioactive liquid waste treatment system is controlled by the control device 102. Here, in Figure 11, L _CH
is the full water level of the waste liquid tank, and _LSL is the low water level of the treated water tank. Water purification treatment operation is performed at times t ₁ , t ₃ , t ₅ , t ₇
and ended at times t ₂ , t ₄ , t ₆ , and t ₈ , respectively. In the filter, the differential pressure value reaches the set value at time t _F ′ ₁
dP _S or more, the regeneration work is started at t _F1 , which is T _F time before the next water purification treatment operation start time t ₅ . The concentrator is operated at t _CP which is T _CP time before each water purification treatment operation start time t ₁ , t ₃ , t ₅ , t ₇ .
₁ , t _CP2 , t _CP3 , and t _CP4 , preparatory work has started. Furthermore, since the density became equal to or higher than the set value D _s at time t _CR ' ₁ , the regeneration work is started at t _CR1 , which is T _CR time before the next water purification operation start time t ₅ . Next, the demineralizer starts regeneration at time _tD1 , which is time _TD before the next water purification treatment operation start time _t7 , because the integrated conductivity amount exceeds the set value _CDS at _{time tD'1 .} Work has begun. The water level in the treated water tank is
Since the value exceeds the set value L _SH at times t _s ′ ₁ and t _s ′ ₂ , the treated water is transferred at t _s1 and t _s2 , which are hours before the next water purification treatment operation start times t ₃ and t ₇ , respectively. Starting to drive. As explained above, in the embodiment of the control device of the present invention, the preparation and regeneration work of the filter, concentrator, and demineralizer and the treated water transfer operation are performed a certain period of time before the start time of the water purification treatment operation. It is characterized in that the above-mentioned work/operation is controlled so as to start at the time when the water purification treatment operation starts, and to end at the time when the water purification treatment operation starts.

Next, a second embodiment of the present invention will be described.

Of the configurations of this embodiment, the overall configuration is completely the same as the embodiment shown in FIG.
03, operation start prediction unit 204 and process amount calculation units 205A, 205B, 205C, 205D
are the same as the embodiments shown in FIGS. 4, 5, and 7, respectively, but the operation command output units 206A, 206
B, 206C, and 206D each have the configuration shown in FIG. Figure 12 shows the operation command output section 2.
Although the configuration of 06A is shown, the operation command output section 206
B, 206C, and 206D have similar configurations.

The driving command output unit 206A in this embodiment is
As shown in FIG. 12, setting comparison circuits 441 and 44
3,450, logic inversion circuit 463, logic circuit 44
5,449, 454, 458, 461, and drive output circuits 446, 455, 462. A waste liquid tank water level output signal from the signal selection section 203 is input to the setting comparison circuit 441 via the signal line 313A. Further, the waste liquid tank low water level setting value (L _CL ) is input to the other input terminal of the setting comparison circuit 441. The setting comparison circuit 441 issues an output signal when the waste liquid tank water level signal is larger than the waste liquid tank low water level set value _LCL , and outputs the signal to the logic circuit 445 and the logic inversion circuit 463 via the signal line 541.

A predicted water purification operation start time output signal from the operation start prediction unit 204 is input to each of the comparison setting circuits 443 and 450 via the signal line 304A. In addition, the setting comparison circuits 443, 45
0, the current time T _P for starting the water purification process and the time setting value T _CP for starting the concentrator preparation work a certain period of time earlier are input. That is, the setting comparison circuits 443, 450
compares the time t _S until the predicted water purification operation start time inputted from the operation start prediction unit 204 with the set values T _P and T _CP , and determines that the time t _S corresponds to the set values T _P and T _CP . When the value becomes smaller than , each output is output. This output signal is transmitted through signal lines 543 and 550, respectively.
is transmitted to logic circuit 445 and drive circuit 455 via.

The output signals of the setting comparison circuits 441 and 443 are input to the logic circuit 445. The logic circuit generates an output signal when two input signals are input simultaneously, and transmits the output signal to the drive output circuit 446 via the signal line 545. The above drive output circuit 4
46 operates in response to the output signal of the logic circuit 545, and operates the waste liquid tank inlet valves 41, 42, waste liquid tank outlet valves 45, 46, waste liquid pump 47, waste liquid circulation valves 48, 49, waste liquid transfer valve 50, processing For the water tank inlet valve 54, signal lines 341 and 34, respectively.
2,345,346,347,348,349,
A driving output is generated through the terminals 350 and 354. At the same time, the waste liquid tank inlet valve 41,
42 is outputted to the signal selection section 203 via a signal line 309A.

The logic inversion circuit 463 includes the setting comparison circuit 4.
41 output signals are input via a signal line 541. The logic inversion circuit 463 emits an output signal only when there is no input signal, and connects the logic circuits 449, 454, 458, 461 via the signal line 563.
Communicate to each of them. That is, the comparison setting circuit 4
41, and an output signal is generated when the waste liquid tank water level signal becomes equal to or less than the waste liquid tank low water level set value _LCL .

The logic circuit 449 includes the logic inversion circuit 463
output signal, and the process amount calculation unit 405
The filter differential pressure high output signal of A is connected to the signal line 56, respectively.
3,305A. The logic circuit 449 generates an output signal when the two input signals are input simultaneously, and outputs a filter regeneration command signal to the filter regeneration device 151 via the signal line 351.

The logic circuit 454 includes the logic inversion circuit 463.
output signal, and the process amount calculation unit 405
A concentrator concentration completion output signal is sent to each signal line 55.
2,306A. The logic circuit 454 emits an output signal when the two input signals are input simultaneously, and the logic circuit 454 outputs an output signal when the two input signals are input simultaneously.
The signal is output to the drive output circuit 455 via.

The output signal of the setting comparison circuit 450 and the output signal of the logic circuit 454 are input to the drive output circuit 455 via signal lines 550 and 554, respectively. The drive output circuit 455 sends a concentrator preparation command signal to the input signal from the setting comparison circuit 450 and a concentrator regeneration command signal to the input signal from the logic circuit 454, respectively, on the signal line 352. is outputted to the concentrator preparation and regeneration device 152 via.

The logic circuit 458 includes the logic inversion circuit 463
output signal and the process amount calculation section 405A
The demineralizer conductivity integrated amount large output signals are inputted via signal lines 563 and 307A, respectively. The logic circuit 458 issues a demineralizer regeneration command signal when the two input signals are input simultaneously;
The desalination regenerating device 153 via a signal line 353
Output to.

The logic circuit 461 includes the logic inversion circuit 463
output signal and the process amount calculation section 405A
The treated water tank water level high output signal is connected to each signal line 5.
63,308A. The logic circuit 461 issues a treated water transfer operation command signal when the above two input signals are input simultaneously, and outputs it to the drive output circuit 462 via the signal line 561. The drive output circuit 462 operates in response to an output signal from the logic circuit 461, and is operated by the processing pump 56, the processing water circulation valve 57, and the processing water transfer valve 5.
8, drive signals are generated via signal lines 356, 357, and 358, respectively.

The above is an explanation of the configuration of the operation command output unit 206A of the water purification treatment series 101A, but other water purification treatment series 101B, 101C, 101D
Operation command output parts 206B, 206C, 206D
They also have the same configuration.

Next, the operation of the second embodiment of the present invention will be explained.

Among the effects of the second embodiment, the operation command output section 2
Since the operations other than 06A, 206B, 206C, and 206D are the same as those in the previous embodiment, here, the operation command output units 206A and 206D of the second embodiment will be explained.
Only the effects of 06B, 206C, and 206D will be explained.

The operation command output unit 206A of the second embodiment first issues a concentrator preparation command signal when the estimated time of water purification treatment operation start is within a certain value _TCP from the present time, and outputs a concentrator preparation command signal to the concentrator preparation regeneration device. 152 to perform concentrator preparation work. Next, when the predicted water purification operation start time coincides with the current time T _P , a water purification operation start command signal is issued to start the water purification operation. Further, when the waste liquid tank water level signal inputted from the signal selection unit 203 during the water purification operation becomes equal to or less than the waste liquid tank low water level set value _LCL , the water purification operation is stopped. At this time, if there is a filter differential pressure high signal, a filter regeneration command signal is issued, if there is a concentrator concentration completion signal, a concentrator regeneration command signal is issued, and if there is a demineralizer conductivity integrated amount large signal, a demineralizer regeneration command signal is issued. A regeneration command signal is output, and a treated water transfer operation start command signal is output if there is a treated water tank liquid level high signal. The filter regeneration command signal operates the filter regeneration device 151 to perform filter regeneration work, and the concentrator regeneration command signal activates the concentrator preparation and regeneration device 152 to perform the filter regeneration work. The demineralizer regeneration command signal activates the demineralizer regeneration device 53 to perform the demineralizer regeneration work, and the treated water transfer operation start command signal is This allows the treated water transfer operation to be carried out.

Although the above operation has been explained for the driving command output section 206A, other driving command output sections 206B, 20
6C and 206D have exactly the same effect.

As a result of the above action, the preparatory work of the concentrator is started a certain time before the start of water purification treatment operation, and each water purification treatment line has an interval of more than a certain time, and when water purification treatment operation is finished, Regeneration work begins for water purification equipment whose processing capacity has been determined to have reached its limit based on process volume calculations, and treated water transfer operation for treated water tanks that have collected a certain amount or more of treated water. be done.

FIG. 13 shows an example in which the water purification process line of the liquid waste treatment system is controlled by the second embodiment of the control device 102 of the present invention.

Here, in FIG. 13, L _CH is the full water level of the waste liquid tank, and L _SL is the low water level of the treated water tank. In Figure 13, water purification treatment operation is performed at different times.
Started at t ₁ , t ₃ , t ₅ , t ₇ and at times t ₂ , t ₄ , t ₆ , t ₈ respectively
It ended on. First, since the differential pressure value of the filter exceeded the set value dP _s at times t _F ′ ₁ and t _F ′ ₂ , the water purification treatment operation at which the differential pressure value reached dP _S ended at time t 2 and t F ′ ₂ . Reproduction work began on _t8 . In addition, the concentrator will determine the start time of water purification treatment operation.
t _CP1 , t _{CP2 ,} T _CP time before each of t 1 , t ₃ , t ₅ , t ₇ ,
Preparatory work is started at t _CP3 and t _CP4 , and since the density becomes equal to or higher than the set value D _S at time t _CR ' ₁ , regeneration work is started at time t ₄ when the water purification treatment operation ends. The demineralizer starts regeneration work at time _t4 , when the water purification treatment operation ends, because the integrated conductivity amount becomes equal to or _greater than the set value _CDS at time _tD'1 . Also,
Since the treated water tank water level became equal to or higher than the set value L _SH at time t _S ' ₁ , the treated water transfer operation was started at time t ₆ when the water purification treatment operation ended. As described above, in the control device of this embodiment, the preparatory work for the concentrator is started a certain period of time before the water purification treatment operation start time, and the filter, concentrator, and Control is performed to start the demineralizer regeneration work and treated water transfer operation.

In another embodiment of the invention, the control device 102
is used to control nuclear power plants. Some of the functions of a computer such as an electronic computer or a so-called microcomputer can also be obtained by programming and operating the flowchart described below.

The flowcharts of the computer program in this embodiment are shown in Figs. 14, 15, 16, and 1.
7, FIG. 18, FIG. 19, FIG. 20, and FIG. 21. The flowchart of program A shown in FIG. 14 is based on the function of the signal selection section 203 shown in FIG.
and C flowchart corresponds to the function of the operation start prediction unit 204 shown in FIG. 5, and the flowchart of program D shown in FIG.
The program E flowchart shown in FIG. 18 corresponds to the operation command output section 20 shown in FIG.
6A, 206B, 206C, 206D functions,
The flowchart of program F shown in FIG.
They correspond to the functions of B, 206C, and 206D, respectively. Therefore, in order to execute the control method of the present invention, the program shown in the above flowchart is set as a subprogram, and the above subprogram is executed according to the main program a or b flowchart shown in FIGS. 20 and 21. Just let it run.

Next, the operation of the flowchart of each program will be explained. First, the flowchart of program A shown in FIG. 14 will be explained.

(1) Input the water level signal of waste liquid tank a.

(2) Input the water level signal of waste liquid tank b. Here, waste liquid tanks a and b indicate two waste liquid tanks for each water purification treatment series.

(3) Input the current time and store it in the Ith row of matrix T(I).

(4) Determine whether the inlet valve of waste liquid tank a is open, and if it is open, put the water level value of waste liquid tank a in line I of A(I) and the water level value of other waste liquid tank b. Store it in the Ith line of B(I). Here, A
(I), B(I) and T(I) are each a matrix of 4 rows and 1 column, and are defined by the main program shown in FIG. 20 or 21. Moreover, I is an integer for distinguishing the water purification treatment series 101, 101B, 101C, and 101D, and I=1, 2, 3, or 4.

(5) If the inlet valve of waste tank a is closed, determine whether the inlet valve of another waste tank b is open, and if it is open, set the water level value of waste tank b to A(I ), and the water level value of the other waste liquid tank a is stored in the I-th line of B(I). With this step, program A is ended.

Next, the flowchart of program B shown in FIG. 15 will be explained.

(1) Matrix X (I, n) with 4 rows and n columns defined in the main program shown in Figure 20 or Figure 21
and Y(I,n), set the numerical value stored in X(I,N) to X(I,NL), Y
The numerical value stored in (I, N) is changed to Y(I, N)
-1) and store them. At this time, X
The numerical values stored in (I, 1) and Y(I, 1) are erased. In addition, the above X (I, N)
is the water level value of the waste liquid tank, and Y(I, N) is a matrix for storing time. Further, n determines the number of data to be stored, and is defined on the main program.

(2) Read and store the waste liquid tank water level value stored in the above A(I) into the above X(I, n).

(3) Read the time stored in T(I) above,
Store in Y(I, n) above.

(4) Elements of the above matrix X(I, N) (N=1, 2,
......, n) and Y(I, N) (N=1,
By performing calculations using 2, . . . , n), the time when the water level of the waste liquid tank becomes full is predicted. The calculation performed here may be the one shown in equation (1) using two pairs of data, or may be a statistical processing calculation such as the method of least squares using multiple pairs of data.

The predicted time when the waste liquid tank will reach full capacity, which is the result of the above calculation, is stored in the I-th row of the matrix C(I) defined in the main program shown in FIG. 20 or FIG. 21.
With this step, program B is ended.

Next, the flowchart of program C shown in FIG. 16 will be explained.

(1) Arrange the elements of the above matrix C(I) obtained by the above program B in descending order, and set the numerical value of each element and row number I of the above matrix C(I) in order by 4.
It is stored in a matrix D(J,K) with two rows and two columns. Here, the matrix element D (J, 1) is the J-th largest numerical value of the matrix element C (I), and the matrix element D (J, 2) is the value of the row of the matrix element C (I). Each number I is memorized. In addition, the above matrix D
(J, K) are defined in the main program shown in FIG. 20 or 21.

(2) Let L=1.

(3) The matrix element D(L, 1) is the set value △
When T is greater than ₁ , skip the next steps (4), (5), and (6) and proceed to step (7).

(4) The matrix element D(L, 1) is the set value △
When T is smaller than ₁ , △D
Calculate.

ΔD=D(L, 1)−D(L+1, 1) (5) When the above ΔD is larger than the set value ΔT ₂ , the matrix elements D(L, 1) and D(L+
Do not change the values in 1, 1) and proceed to step (8).
Proceed to.

(6) When the above △D is smaller than the above set value △T ₂ , the numerical value of the above matrix element D (L, 1) is not changed, but the numerical value of the matrix element D (L + 1, 1) is Change to value.

D (L+1, 1) = D (L, 1) - △T ₂ (7) The numerical value of the row corresponding to the number stored in the above D (L + 1, 2) of the above matrix C(I) is Change it to the value of D(L+1,1) calculated in step (6) and store it. That is, the following calculation is performed.

C(D(L+1,2))=D(L-1,1) (8) When L is 1 or 2, set L to L+1 and return to step (3) above. When L is 3, program C is terminated.

Next, the program D flowchart shown in FIG. 17 will be explained.

(1) Input the filter inlet flow rate signal.

(2) Input the differential pressure signal between the filter inlet and outlet.

(3) From the signals input in steps (1) and (2) above, correct the differential pressure signal between the filter inlet and outlet using the relationship shown in equation (2), and calculate the differential pressure value at the standard flow rate. do.

(4) The differential pressure value at the above standard flow rate is the differential pressure setting value.
If dP _S or more, the value of the I-th row of the 4-by-1 matrix KF(I) defined in the main program shown in FIG. 20 or 21 is set to 1. Further, if it is less than the above set value _dPS , the value in the Ith row of KF(I) is not changed.

(5) Input the concentrator inlet flow rate signal.

(6) Input the concentrator inlet and outlet conductivity signals.

(7) Input the concentrator inlet and outlet turbidity signals.

(8) Input the concentrator density signal.

(9) From the signals input in steps (5) and (6) above, the concentrator conductivity integrated amount is calculated by performing the calculation shown in equation (3) above.

(10) If the concentrator conductivity integrated amount is greater than or equal to the concentrator conductivity integrated amount set value C _CS , then the 4-by-1 matrix KC(I ), set the value of the Ith row to 1
shall be. Also, if the above set value C _CS or less, KC
The value in line I of (I) is not changed.

(11) Calculate the integrated amount of concentrator turbidity by performing the calculation shown in equation (4) above from the signals input in steps (5) and (7) above.

(12) If the concentrator turbidity cumulative amount is greater than or equal to the concentrator turbidity cumulative amount set value T _UCS , the value in the I-th row of the matrix KC(I) is set to 1. In addition, the above set value T _UC
If it is less than or equal to _S , the value in the Ith row of KC(I) is not changed.

(13) If the signal input in step (8) above is greater than or equal to the concentrator density set value D _CS , the above matrix KC
Let the value of the Ith row of (I) be 1. Further, if it is less than the above set value D _CS , the value in the Ith row of KC(I) is not changed.

(14) Input the demineralizer inlet flow rate signal.

(15) Input the conductivity signals at the demineralizer inlet and outlet.

(16) From the signals input in steps (14) and (15) above, calculate the demineralizer conductivity integrated amount by performing the calculation shown in equation (5) above.

(17) If the demineralizer conductivity integrated amount is equal to or greater than the demineralizer conductivity integrated amount set value _CDS , 4 rows and 1 column defined by the main program shown in FIG. 20 or 21. Let the value of the I-th row of the matrix KD(I) be 1. Further, if it is less than the above set value C _DS , the value in the Ith row of KD(I) is not changed.

(18) Input the treated water tank water level signal.

(19) If the treated water tank water level value is greater than _or equal to the treated water tank water level high set value L Let the value of the Ith row be 1. Also, if it is less than the above set value L _SH ,
The value in the Ith row of KS(I) is not changed. Program D ends with this step.

Next, the flowchart of program E shown in FIG. 18 will be explained.

(1) First, it is determined whether the waste liquid tank water level value stored in the I-th row of the matrix B(I) is less than or equal to the waste liquid tank water level low set value L _CL , and if it is less than the above set value L _CL . If so, an output signal is issued to stop the water purification treatment operation.

(2) Determine whether the value in the I-th row of the matrix C(I) is less than or equal to the time setting value _TF . If it is less than or equal to the setting value, proceed to the next step (3); if it is greater than or equal to the setting value, proceed to step (3). Skip step 3) and proceed to the next step (4).

(3) When the value in the I-th row of the matrix C(I) is less than or equal to the set value T _F and if the I-th row of the matrix KF(I) is 1, a filter regeneration command signal is output. .

(4) Determine whether the value in the I-th row of the matrix C(I) is less than or equal to the time setting value _TCR . If it is less than or equal to the setting value, proceed to the next step (5); if it is greater than or equal to the setting value, proceed to step (5). Skip step 5) and proceed to the next step (6).

(5) When the value in the I-th row of the matrix C(I) is less than or equal to the set value T _CR , the I-th row of the matrix KC(I) is 1.
If so, a concentrator regeneration command signal is output.

(6) Determine whether the value in the I-th row of the matrix C(I) is less than or equal to the time setting value _TCP . If it is less than or equal to the setting value, proceed to the next step 7; if it is greater than or equal to the setting value, proceed to step (7). ) to the next step (8)
Proceed to.

(7) The value in the I-th row of the above matrix C(I) is the above setting value T
When the temperature is below _CP , a concentrator preparation command signal is output.

(8) Determine whether the value in the I-th row of the matrix C(I) is less than or equal to the time setting value _TD . If it is less than or equal to the setting value, proceed to the next step (9); if it is greater than or equal to the setting value, proceed to step (9). Skip 9) and proceed to the next step (10).

(9) The value in the Ith row of the matrix C(I) is the set value T
_D or less, if the I-th row of the matrix KD(I) is 1, a demineralizer regeneration command signal is output.

(10) Determine whether the value in the I-th row of the matrix C(I) is less than or equal to the time setting value T _S . If it is less than or equal to the setting value, proceed to the next step (11); if it is greater than or equal to the setting value, proceed to step ( Jump over 11) and proceed to the next step (12).

(11) The value in the Ith row of the above matrix C(I) is the above setting value T
_S or less, if the I-th row of the matrix KS(I) is 1, a treated water transfer operation start command signal is output.

(12) Determine whether the value in the I-th row of the matrix C(I) is less than or equal to the time setting value T _P , and set the above setting value T _P
In the following cases, a water purification treatment operation start command signal is output. Also, the matrices KF(I), KC(I), KD
(I), KS(I), and X(I,N), Y(I,N)
The numbers in the Ith row of each of are all set to 0. Program E is ended with this step.

Next, the flowchart of program F shown in FIG. 19 will be explained.

(1) First, it is determined whether the value in the I-th row of the matrix B(I) is less than or equal to the waste liquid tank water level low set value L _CL , and if it is less than the above set value L _CL ,
Perform the following steps (2)(3)(4)(5)(6). In addition, if the above set value L _CL or more, the above steps (2) and (3) are performed.
Jump over (4), (5), and (6) and proceed to step (7).

(2) The value in the I-th row of the above matrix B(I) is the above setting value L
When the temperature is below _CL , an output signal is issued to stop the water purification treatment operation.

(3) If the value in the I-th row of the matrix KF(I) is 1, output a filter regeneration command signal.

(4) If the value in the I-th row of the matrix KC(I) is 1, output a concentrator regeneration command signal.

(5) If the value in the I-th row of the matrix KD(I) is 1, output a demineralizer regeneration command signal.

(6) If the value in the I-th row of the matrix KS(I) is 1, a treated water transfer operation start command signal is output.

(7) Determine whether the value in the I-th row of the matrix C(I) is less than or equal to the time setting value _TCP , and if it is less than or equal to the time setting value _TCP , output a concentrator preparation command signal. .

(8) Determine whether the value in the I-th row of the matrix C(I) is less than or equal to the time setting value _TP , and if it is less than or equal to the time setting value _TP , output a water purification treatment operation start command signal. do. Also, the matrices KF(I), KC
(I), KD(I), KS(I) and X(I,N), Y
Let the numerical value in the Ith row of each of (I, N) be 0. With this step, program F is ended.

Next, the above programs A, B, C, D, E, F
We will explain the main program that operates the computer using .

First, the main program a shown in FIG. 20 will be explained.

(1) First, matrices A(4), B(4), C(4), D(4,2), KF used in the above programs A, B, C, and D.
(4), KD(4), KS(4), X(4, n), Y(4,
n) respectively. Also, the matrix X(I,
N), the number n of columns of Y(I, N) is determined.

(2) For each case where the value of I is 1, 2, 3, and 4, execute the programs A and B, respectively.

(3) Execute the program C.

(4) When the value of I is 1, 2, 3, or 4, execute the programs D and E, respectively.

Next, the main program b shown in FIG. 21 will be explained.

(1) First, matrices A(4), B(4), C(4), D(4,2), KF used in the above programs A, B, C, and D.
(4), KC(4), KD(4), KS(4), X(4,n), Y
(4, n) are defined respectively. Also, the matrix
(I, N), determine the number n of columns of Y(I, N).

(2) For each case where the value of I is 1, 2, 3, and 4, execute the programs A and B, respectively.

(3) Execute the program C.

(4) For each case where the value of I is 1, 2, 3, and 4, execute the programs D and F, respectively.

As explained above, according to the control method and control device of the present invention, it is possible to disperse the operation start times of the plurality of water purification treatment lines constituting the radioactive liquid waste treatment system over a fixed interval or more. So,
Operators can perform sampling work of waste liquid, treated water, etc. without duplication, and there is no waiting time for this sampling work, allowing smooth operation. Therefore, it is possible to prevent a decrease in operational efficiency due to operational delays in the water purification treatment system, and also to avoid accidents such as overflowing of waste liquid tanks. In addition, the equipment capacity can be determined so that the suspension period of the water purification treatment line is the minimum time determined from the preparation and regeneration work of each water purification treatment equipment and the time required to transfer the treated water from the treated water tank. and the operating efficiency can be significantly improved. Furthermore, since the necessity of regeneration work for each water purification treatment equipment is determined based on the calculated value of the process amount detected from each water purification treatment equipment, the frequency of unnecessary regeneration work is reduced, and the need for regeneration work due to regeneration work is reduced. Advantages such as the ability to minimize the amount of secondary radioactive waste generated compared to the amount of waste liquid to be treated can be obtained.
Furthermore, according to the present invention, the control device can now make decisions to start operations such as water purification operation, preparation and regeneration work of each treatment device, and treated water transfer operation, which were conventionally performed by operators. This eliminates the need for constant monitoring by the operator, which significantly reduces the operator's effort and saves labor.
Further, it is possible to obtain effects such as eliminating the need for skill in driving and reducing erroneous operations.

[Brief explanation of the drawing]

Figure 1 is a configuration diagram of a radioactive liquid waste treatment system in a nuclear power plant, Figure 2 is a configuration diagram showing the relationship between the configuration of a water purification treatment line and a control device in the radioactive liquid waste treatment system, and Figure 3 The figure is a block diagram of an embodiment of a control device for a radioactive liquid waste treatment system according to the present invention, FIG. 4 is a block diagram of a signal selection section of the control device shown in FIG. 3, and FIG. 6 is an explanatory diagram showing the operating characteristics of the operation start prediction section shown in FIG. 5, with time on the horizontal axis and water position on the vertical axis. This book explains how to predict the water position.
Fig. 7 is a configuration diagram of the process quantity calculation unit of the control device shown in Fig. 3, and Fig. 8 is an explanatory diagram showing the operating characteristics of the process quantity calculation unit shown in Fig. 7, with the flow rate value shown on the horizontal axis. , a diagram illustrating the relationship between the two by taking the differential pressure value on the vertical axis, FIG. 9 is a configuration diagram of an embodiment of the operation command output section of the control device shown in FIG. 3, and FIG. 11 is an explanatory diagram showing the control characteristics of one embodiment of the control device shown in the figure, with time on the horizontal axis and water level value on the vertical axis, showing the relationship between the temporal change in water position and the output signal. The figure is an explanatory diagram showing the control characteristics of the control device shown in Fig. 3. The horizontal axis is time, and the vertical axis is each operating state. FIG. 13 is an explanatory diagram showing the control characteristics when the control device shown in FIG. 3 is configured using the operation command output section shown in FIG. 12. A diagram showing changes in operating conditions over time, with time on the axis and each operating condition on the vertical axis.
FIG. 14 is an explanatory diagram showing a flowchart of program A of the programs for executing the control method of the present invention using the functions of a computer;
The figure is an explanatory diagram showing a flowchart of program B among the above programs, FIG. 16 is an explanatory diagram showing a flowchart of program C among the above programs, and FIG. 17 is a flowchart of program D among the above programs. Explanatory diagram showing the first
FIG. 8 is an explanatory diagram showing a flowchart of program E among the above programs, FIG. 19 is an explanatory diagram showing a flowchart of program F among the above programs, and FIG. 20 is an explanatory diagram showing a flowchart of program F among the above programs. FIG. 21 is an explanatory diagram showing a flowchart of main program b of the above programs. 101A, 101B, 101C, 101D...
Water purification treatment series, 43, 44... Waste liquid tank, 5
1... Filter, 52... Concentrator, 53... Desalter, 55... Treated water tank, 102... Control device, 151... Filter regeneration device, 152... Concentrator preparation regeneration device, 153 ...Desalter regeneration device, 2
03...Signal selection unit, 204...Driving start prediction unit, 205A, 205B, 205C, 205D...
...Process amount calculation unit, 206A, 206B, 20
6C, 206D... Operation command output section.

Claims (1)

[Scope of Claims] 1. A waste tank that collects waste liquid, a treatment device that purifies the waste liquid in this tank, a treated water tank that stores treated water from this treatment device, and a treatment water tank that stores water in this treated water tank. In a radioactive liquid waste treatment system comprising a plurality of water purification treatment lines connected in parallel with pumps for transporting the water, and a control device for controlling each of the water purification treatment lines, the waste liquid in each of the waste liquid tanks is The time change in the amount is detected, and the detected value is used to perform calculations to predict the necessary operation start time of the water purification treatment equipment. The processing capacity and the collection capacity of the treated water tank are calculated, and these calculation results are used to perform the preparation and regeneration work of each treatment device, the treated water transfer of each treated water tank, and the processing of each water purification treatment line. 1. A method for controlling a radioactive liquid waste treatment system, characterized in that water purification treatment operations are sequentially performed in a certain order. 2. The fixed order is determined by comparing the predicted water purification treatment operation start times calculated for each of the plurality of water purification treatment trains with each other, and determining that the operation start times of each water purification treatment train are set at intervals of a certain amount of time or more. A method for controlling a radioactive liquid waste treatment system according to claim 1, characterized in that the operation is controlled so that the operations are performed sequentially. 3. In each of the water purification processing series, the preparation and regeneration work of each of the water purification processing devices and the processing are carried out in a certain order by detecting that a certain period of time is before the predicted time to start operation of the water purification processing, which is calculated. The method of controlling a radioactive liquid waste treatment system according to claim 1, characterized in that the operation of the water tank is controlled so that a treated water transfer operation and a water purification treatment operation are respectively started. 4. The fixed order is such that in each of the water purification treatment series, a preparatory work of each of the water purification treatment devices is started by detecting that a predetermined time is before the predicted water purification operation start time calculated, and Claim 1, characterized in that the operation is controlled so as to detect that the water purification treatment operation has ended and to start the regeneration operation and the treated water transfer operation of each of the water purification treatment apparatuses. control method for radioactive liquid waste treatment system. 5. A waste liquid tank that collects waste liquid, a pump that transfers the waste liquid in this tank to a treatment device that performs water purification treatment, the treatment device, a treated water tank that stores treated water from this treatment device, and a treated water tank that stores the treated water from this treatment device. In a system in which multiple water purification treatment systems are connected in parallel with pumps that transfer water,
A detector for detecting temporal changes in the amount of waste liquid in each waste liquid tank of each water purification treatment series, various detectors for detecting state quantities of the water purification treatment series, and detecting temporal changes in the amount of waste liquid. The operation start prediction unit predicts the operation start time of the water purification treatment train based on the output signal of the detector, and the processing capacity of the treatment device and the treated water are determined from the state quantities detected by various detectors that detect the state quantities of the water purification treatment train. Preparation and preparation of each processing device that operates in response to output signals from the process amount calculation section that performs prediction calculations with respect to the collection capacity of the tank, the operation start prediction section, and the process amount calculation section that constitutes each of the water purification treatment lines. It is characterized by comprising a control device that controls each of the water purification treatment series, and includes an operation command output unit that issues an output signal to perform the regeneration work, the treated water transfer operation of the treated water tank, and the water purification treatment operation, respectively. A control device for a radioactive liquid waste treatment system. 6. The operation start prediction unit included in the control device includes a device that measures the change history of the waste liquid tank water level value of each of the plurality of water purification treatment series and predicts and calculates the time when each waste liquid tank reaches full water, and Compare the full water arrival times with each other and calculate the predicted water purification treatment operation start time by correcting the water purification treatment train start times so that the operation starts of the water purification treatment series are dispersed at intervals of a certain time or more. A control device for a radioactive liquid waste treatment system according to claim 5, characterized in that the control device comprises a device that performs the following steps. 7. The operation command output unit included in the control device detects that a certain period of time is before the predicted water purification operation start time calculated in each of the water purification treatment series, and starts preparation and regeneration of each of the water purification treatment devices. a device for determining the start of each of the operation, the treated water transfer operation of the treated water tank and the water purification treatment operation, the preparation and regeneration work of each of the water purification treatment devices, the treated water transfer operation and the water purification treatment; 6. The control device for a radioactive liquid waste treatment system according to claim 5, further comprising a device for outputting a command signal for each operation. 8. The operation command output unit included in the control device detects that a certain period of time is before the predicted water purification operation start time calculated in each of the water purification treatment series, and performs the preparation work of each of the water purification treatment devices. a device for determining the start of each of the water purification treatment operations; and a device for detecting the end of the water purification treatment operation for each of the regeneration work of each of the water purification treatment devices and the treated water transfer operation of the treated water tank. It is characterized by comprising a device for determining the start, and a device for outputting a command signal to cause each of the water purification treatment devices to perform preparation and regeneration work, the treated water transfer operation, and the water purification treatment operation, respectively. A control device for a radioactive liquid waste treatment system according to claim 5.