JP2012163438A - Control rod operation monitoring apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control rod operation monitoring apparatus (rod worth minimizer) in which safety in performing a test can be improved and, in addition, convenience is enhanced.SOLUTION: As a representative configuration, a control rod operation monitoring apparatus 210 includes a sequence input unit 310 for inputting beforehand a sequence constituted of a combination of selection information of control rods 130 and an operation of pull-out or insertion, a display unit 230 which displays the next operation on the basis of the sequence, a selection input unit 222 for selecting an arbitrary control rod 130, an operation input unit 226 for performing the operation of pull-out or insertion on the selected control rod 130, and an operation monitor unit 300 which blocks the operation of the control rod 130 in the case where an operation different from the sequence is performed. In the control rod operation monitoring apparatus 210, the sequence input unit 310 is capable of inputting a sequence mixing pull-out and insertion as a test mode.

Description

  The present invention relates to a control rod operation monitoring device (Rodworth Minimizer: RWM: Rod Worth Minimizer) that monitors the operation procedure of a control rod and warns or prevents an operation when it differs from a sequence inputted in advance.

  In a nuclear reactor such as a boiling water reactor (BWR) or an advanced boiling water reactor (ABWR), a fuel assembly made of uranium or the like is placed between fuel assemblies. The control rod is inserted and removed to adjust the reactivity. When shutting down the reactor, control rods are fully inserted to maintain fission in a subcritical state. When operating the reactor, the control rod is pulled out and the output is adjusted by the flow rate of light water.

  The control rod is operated according to the procedure manual while pointing, calling back, and confirming by a plurality of operators. The procedure manual is created in advance by calculating the reactivity when the control rod is pulled out or inserted. The reactivity is calculated in consideration of the arrangement of fuel in the reactor, enrichment, burnup, etc. In this way, the operation of the control rod is carefully performed, but for further safety, the operation is usually performed using a control rod operation monitoring device called a rodworth minimizer (control rod value minimizer).

  In order to ensure that the reactivity value of the control rod is less than the specified value, the rodworth minimizer inputs the control rod operation procedure as a sequence in advance, monitors the actual control rod operation procedure, When the pattern deviates from a predetermined allowable range, the drawing prevention and insertion prevention are performed. The position of the control rod is, for example, 00 pos-48 pos, and moves 2 pos each time one notch is moved. Therefore, the sequence includes a combination of control rod selection information (XY coordinates) and a drawing or insertion operation (insertion position and extraction position).

  Patent Document 1 describes a rodworth minimizer (reactor control device) that guides the next operation on a CRT display. Patent Document 2 discloses a rodworth minimizer (control rod withdrawal monitoring device) in which control rods are divided into a plurality of groups, and a withdrawal rule is set for each group so that control rods with high reactivity are not concentrated locally. Are listed. In Patent Document 2, a configuration is described in which the increase in reactivity is reduced even when a plurality of control rods are simultaneously pulled out.

Japanese Patent Laid-Open No. 49-089094 Japanese Patent Laid-Open No. 11-295463

  In the nuclear reactor (nuclear power plant) as described above, in order to operate safely, periodic inspection is obliged every predetermined period. During the inspection, various inspections and tests that cannot be performed during cycle operation are performed. Among such tests, there are a reactor shutdown allowance inspection and a cold / warm criticality test, in which the control rod reactivity is calculated in advance and the control rod is operated.

  In the reactor shutdown margin inspection, the control rod is actually withdrawn in the reactor after fuel replacement, and one control rod with the maximum value is not inserted during the cycle operation until the next periodic inspection. However, it is an inspection to confirm that the reactor can be subcritical. Specifically, after the fuel replacement is completed, all control rods are fully inserted from the fully inserted state, and one control rod having the maximum value is fully pulled out, the reactivity change during cycle operation, and the reactor water at the time of inspection In order to add the reactivity required for correcting the temperature, analysis error, etc., one adjacent control rod is pulled out to the required position and it is confirmed that it is less than critical.

  The cold temperature criticality test is performed during plant shutdown at the beginning and end of the cycle in order to grasp the calculation error between the computer that determines the fuel arrangement of the reactor and the operation plan, etc. and the actual plant (computer). In this test, a plurality of control rods are pulled out to make the reactor critical locally for a short time.

  Even in the above-described test, it is desirable to use a rodworth minimizer because an unintended reactivity may be input if an incorrect control rod operation is performed. However, control rod operations that should normally be monitored by the rodworth minimizer are either withdrawing all control rods at the same time when starting or shutting down the reactor, or inserting them all at once. Therefore, it is not necessarily suitable for use in the above test.

  Specifically, a “stop margin test sequence” has conventionally been provided for the reactor shutdown margin inspection. In the conventional stop margin test sequence, any two control rods are allowed to be pulled out, and when the third control rod is pulled out by one notch, pulling prevention is required.

  However, since there is no designation for the position of the two control rods, even the control rods that are not the target can be pulled out if they are within two. Since there is no designation (sequence is not input), there is no guide display of the control rod to be operated next. Further, the conventional rodworth minimizer is configured to prevent the pulling out when the wrong control rod is pulled out by one notch. For this reason, if the third control rod is selected by mistake and a pulling operation is performed, one notch is pulled out.

  Regarding the cold temperature criticality test, there was no dedicated mode in the conventional rodworth minimizer. Here, when the cold temperature criticality test is monitored using the basic function of the rodworth minimizer, the total number of control rods to be extracted is input to one group (00 pos-48 pos for each target control rod). To do). In the basic function, control rods within the same group (a group of control rods arranged by arrangement) are allowed to be operated in any order, and even if the order is different, “selection error” and “pullout prevention” "Function" does not work. There is no problem with this basic function because it has been evaluated to have an appropriate reactivity value even if the order is wrong in the same group at the time of reactor start-up, but the order was wrong in the cold criticality test. In such a case, an unexpected reactivity may be introduced, which is not preferable.

  If the "selection error" and the "pullout prevention function" are to be activated, it is necessary to input the sequence input as one group, but even in this case, the current rodworth minimizer does not control correctly. The second rod is allowed to be pulled out.

  In the cold temperature criticality test, the amount of reactivity input when the control rod is pulled out by one notch (for example, 02 pos → 04 pos) is limited, and when it exceeds this, the dispersion operation is performed before this one notch is pulled out. Dispersion operation means that before pulling out a control rod with a high reactivity value, after pulling out another control rod and applying a small value, if there is no problem, after inserting the other control rod This is an operation to pull out a control rod having a high reactivity value. Therefore, when a sequence is input as one group, a control rod (control rod having a high reactivity value) to be operated is operated different from the control rod (control rod having a low reactivity value). While performing, the control rod before the distributed operation is displayed as an insertion error.

  In the distributed operation, both the pulling operation and the inserting operation are performed. However, as a basic function of the rodworth minimizer, a series of sequences consisting of a plurality of groups is batched as a drawing mode or an insertion mode, and when a cold temperature criticality test is carried out with a conventional rodworth minimizer, it is drawn into one group. You have to enter the total number of control rods. However, since the insert operation cannot be input during the pull-out operation (and vice versa), the operation is different from the sequence during the distributed operation, and the guide display is turned off although it does not prevent the operation. End up.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a control rod operation monitoring device (rodworth minimizer) that can improve safety when performing a test and is improved in usability.

  In order to solve the above problems, a typical configuration of a control rod operation monitoring device according to the present invention includes a sequence input unit for inputting in advance a sequence composed of a combination of control rod selection information and a drawing or insertion operation. A display unit for displaying the next operation based on the sequence, a selection input unit for selecting an arbitrary control rod, an operation input unit for operating the selected control rod for drawing or insertion, In the control rod operation monitoring device equipped with an operation monitoring unit that prevents the operation of the control rod when an operation different from the sequence is performed, the sequence input unit can input a sequence with both extraction and insertion as a test mode. It is characterized by being.

  According to the above configuration, it is possible to input a distributed operation as a sequence. In other words, when control rod operations (including distributed operations) are performed in accordance with a sequence input in advance, no selection error occurs when inserting or removing control rods. There is no blocking. In addition, it is possible to continuously perform guide display during the dispersion operation.

  Further, another typical configuration of the control rod operation monitoring device according to the present invention is based on a sequence input unit for inputting in advance a sequence composed of a combination of control rod selection information and extraction or insertion operation, and the sequence. A display unit for displaying the next operation, a selection input unit for selecting an arbitrary control rod, an operation input unit for operating the selected control rod to pull out or insert, and an operation different from the sequence In the control rod operation monitoring device provided with an operation monitoring unit that prevents the operation of the control rod when the control rod is selected, the operation monitoring unit is different from the sequence when the control rod is selected from the selection input unit. In some cases, the control rod is prevented from moving.

  According to the above-described configuration, it is possible to prevent the operation of the control rod by causing a selection error at a selected stage without waiting for the extraction of one notch. Therefore, there is no possibility of pulling out an unscheduled control rod even if it is one notch, and further safety can be ensured.

  In the control rod operation monitoring apparatus, the sequence input unit can input a sequence for two or more control rods, and the operation monitoring unit may determine the order of the selected control rods in units of one. . Specifically, one control rod may be registered per group, or group management may not be performed.

  As a result, the order of the control rods to be operated is also managed by the rodworth minimizer. Therefore, there is no possibility of pulling out or inserting the control rods in the wrong order, and it becomes possible to perform the test safely and reliably.

  In the control rod operation monitoring apparatus, the test mode can be used as a mode for performing a reactor shutdown margin inspection or a cold / critical test.

  These inspections and tests that are performed during periodic inspections in the reactor involve particularly careful control rod operation. In addition, the reactor is tested by inserting and removing a small number of control rods, and the order of operation of the control rods is also an important matter. Therefore, by applying the present invention to the rodworth minimizer, these tests can be performed more safely and reliably.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to improve the safety | security at the time of testing a control-rod operation monitoring apparatus (rodworth minimizer), and also usability is improved.

It is a block diagram which shows schematic structure of the control-rod operation monitoring apparatus concerning this embodiment. It is a figure explaining a display part. It is a figure explaining an operation part. It is a figure explaining using the sequence of distributed operation as an example. It is a figure explaining the determination logic of a selection error. It is a flowchart explaining operation | movement of a control-rod operation monitoring apparatus.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiments are merely examples for facilitating understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are not illustrated. To do.

  FIG. 1 is a block diagram showing a schematic configuration of a control rod operation monitoring apparatus according to the present embodiment. The fuel assembly 120 is loaded into the reactor pressure vessel 110, and the reactivity is adjusted by inserting or withdrawing the control rod 130 vertically in the gap. For example, in a 1.1 million kw-class nuclear reactor, four fuel assemblies 120 are loaded for every 180 cells, and a cross-shaped control rod 130 is installed at the center. The control rod 130 is driven by hydraulic pressure by a control rod drive system 140. The control rod 130 is fitted to the shaft of the control rod drive system 140 by a coupling socket provided at the lower end thereof. The control rod 130 is driven in units of notches provided at equal intervals in the control rod drive system 140.

  The position of the control rod 130 is detected by a sensor provided in the control rod drive system 140. Further, the position of the control rod 130 is detected in increments of twice the notch interval. As an example, assume that all insertions are 00 pos and all withdrawals are 48 pos.

  In addition, the control rod drive system 140 can perform a coupling check by performing an extraction operation for one notch from the full extraction (48 pos) state. The coupling check is a confirmation operation for determining that the shaft and the coupling of the control rod drive system 140 are detached when the pulling operation is performed, and that the coupling is not detached if the shaft is not pulled out. Here, when the coupling is disengaged, the current position of the control rod belonging to the control rod drive system 140 is unknown. If the coupling is removed during the pulling and the control rod 130 is stopped at an intermediate position (for example, 02 pos) for some reason, the control rod drive system 140 is pulled out from 2 pos to 48 pos after its full withdrawal. If it falls, rapid reactivity will be added to the reactor. Therefore, the coupling check is an important confirmation operation.

  The control unit 200 receives a signal from the operation unit 220 of the control rod operation monitoring device 210 described below and transmits insertion or extraction information to the control rod drive system 140. In addition, the operation monitoring unit 300 described later transmits a pullout prevention or insertion prevention signal to the control unit 200.

  The control rod operation monitoring device 210 includes an operation unit 220 that receives an operation from an operator and a display unit 230. The operation unit 220 includes a selection input unit 222 for selecting an arbitrary control rod 130 and an operation input unit 226 for operating the selected control rod 130 to pull out or insert.

  FIG. 2 is a diagram for explaining the display unit 230. The display unit 230 displays an x-coordinate and a y-coordinate representing the position of the control rod 130, and a matrix corresponding to the position of the control rod 130. Each square of the matrix displays the current position of each control rod 130. A numerical value indicating the position (insertion height) is displayed. The display unit 230 is provided with an operation display area 230a for displaying the currently selected control rod 130 and its position.

  FIG. 3 is a diagram illustrating the operation unit 220. The selection input unit 222 is a plurality of switches arranged in a matrix according to the x and y coordinates representing the position of the control rod 130 and the position of the control rod 130. Selected.

  As the operation input unit 226, an insertion switch 226a, a pull-out switch 226b, and a continuous pull-out switch 226c are arranged in the vicinity of the display unit 230. When the insertion switch 226a is pressed, the selected control rod 130 is inserted. Note that when the insertion switch 226a is pressed for a long time, the control rod 130 continuously moves in the insertion direction. The pull-out switch 226b and the continuous pull-out switch 226c are arranged on both sides of the display unit 230. When the pull-out switch 226b is pressed, the control rod 130 is pulled out, but only 2pos is pulled out even if pressed for a short time or pressed for a long time. Note that the pulling operation of the control rod 130 is continuously performed by simultaneously pressing both the pulling switch 226b and the continuous pulling switch 226c.

  As shown in FIG. 1, the control rod operation monitoring device 210 includes an operation monitoring unit 300 that prevents the operation of the control rod drive system 140 when an operation different from the sequence is performed. A sequence is input in advance to the operation monitoring unit 300 from the sequence input unit 310. The sequence is a combination of control rod selection information (coordinate information) and pulling or inserting operations (insertion position and pulling position), and is operation procedure information set for a plurality of control rods 130 in the order in which operations are scheduled. is there. The sequence is input in advance from the sequence input unit 310 as an operation procedure manual (used by the operator) created in consideration of the reactivity value of the control rod 130, stored in the storage unit 320, and monitored for operation. The unit 300 appropriately refers to it.

  When the operator operates the control rod 130, the operation monitoring unit 300 displays the control rod 130 to be operated next in the guide display area 230b (see FIG. 2) of the display unit 230 in accordance with the progress of the operation. Display about. The operation monitoring unit 300 receives selection information and position information (pos) from the control unit 200, and compares the sequence read from the storage unit 320 with the control rod drive system 140 when the sequence is different. To send out a pullout prevention or insertion prevention signal.

  Here, as a first characteristic point of the present embodiment, a sequence in which extraction and insertion are mixed can be input to the sequence input unit 310 as a test mode.

  FIG. 4 is a diagram illustrating an example of the sequence of distributed operations. Here, a description will be given of a case where a dispersion operation is performed using 18-39 when 14-43 is pulled out (shown by hatching in FIG. 2). In the sequence shown in FIG. 4, it is assumed that 14-43 is first pulled out to the position of 12 pos (STEP 02). Next, when the amount of reactivity input when the control rod 130 of 14-43 is withdrawn from 12 pos to 14 pos (1 notch) is larger than the limit, all of 18-39 having a smaller reactivity value than the limit is firstly removed. Operation is performed from insertion (00 pos) to 2 pos (STEP 03). If there is no situation in which the reactivity is excessively added, the control rod 130 of 18-39 is inserted from (2 pos) to full insertion (00 pos) (STEP 04), and the control of 14-43 is performed for the first time here. The rod 130 is pulled out from 12 pos to 14 pos (STEP 05).

  By performing the above dispersion operation, for example, when STEP 03 is performed before STEP 05, the amount of reactivity input (strictly, the amount of input of excess reactivity from the criticality) is appropriately secured according to the test request. Therefore, STEP05 can not be executed, and excessive reactivity input can be avoided. Thus, the test can be performed more safely by performing the test while confirming the change in the reactivity in the actual core.

  In addition, although it repeats, the above dispersion | distribution operations themselves are operation conventionally performed. A characteristic point of this embodiment is that a sequence as shown in FIG. 4 is allowed to be input from the sequence input unit 310. In the basic function of the conventional rodworth minimizer, that is, in the normal mode, a series of sequences consisting of a plurality of groups is collectively set as a drawing mode or an insertion mode, and only one-way operation is allowed. On the other hand, in the present embodiment, as a test mode, a sequence in which extraction and insertion are mixed can be input, so that a distributed operation can also be input as a sequence. Since the concept and operation of the group are described in detail in Patent Document 2 (Japanese Patent Laid-Open No. 11-295463), description thereof is omitted here.

  That is, according to the above configuration, since all the sequences for the distributed operation are input, the distributed operation is a regular operation according to the sequence. Therefore, no selection error occurs when the control rod 130 is inserted or removed. In addition, guide display can be continuously performed in accordance with normal logic even during a distributed operation.

  Next, as a second characteristic point of the present embodiment, when the control rod 130 is selected from the selection input unit 222 and the selection is different from the sequence, the operation monitoring unit 300 controls the control rod 130. To prevent the operation.

  FIG. 5 is a diagram for explaining selection error determination logic. First, as shown in FIG. 5 (b), in the conventional stop margin test sequence mode, it is selected only when the stop margin test is in progress and the withdrawal prevention has already been applied and a control rod other than the withdrawal error is selected. An error occurred.

  In the normal mode, even if the wrong control rod 130 is operated, it is not prevented from being pulled out until one notch is pulled out. In order to perform the above-described coupling check, it is easy to allow one notch to be pulled out. Since a coupling check is performed even when a test such as a reactor shutdown allowance inspection or a cold criticality test mode is performed, it is necessary to allow one notch to be pulled out during the coupling check.

  In this embodiment, as shown in FIG. 5 (a), it is not necessary to wait for the extraction of one notch (the occurrence of a pulling error), and a selection error is generated at the stage of selecting the wrong control rod 130, and the control is performed. The movement of the rod 130 is prevented. As a result, there is no possibility that the control rod 130 unscheduled will be pulled out even if it is one notch, and safety can be further increased.

  The pulling should be prevented, but the operation may be possible only by giving an error regarding insertion. Since the nuclear reactor can stop the reaction of the nuclear reactor by inserting all the control rods 130, it is necessary to assume a case where it is desired to insert the nuclear reactor due to an unexpected situation in the sequence for safety. Therefore, even higher safety can be ensured by enabling the operation on the safe side to be executed without releasing the latch of the operation monitoring unit 300.

  Further, as a third characteristic point of the present embodiment, the operation monitoring unit 300 determines the order of the control rods 130 to be selected in units of one in the test mode. In the normal mode, when the control rods 130 are managed separately for each group, the control rods in the same group are allowed to be operated in an arbitrary order, and therefore can be operated in an incorrect order. However, by determining the order of the control rods 130 selected as described above, the order of the control rods 130 to be operated is also managed by the rodworth minimizer. Therefore, there is no possibility of pulling out or inserting the control rod 130 in the wrong order, and it becomes possible to perform the test safely and reliably.

  Specifically, when a sequence is input to the sequence input unit 310 for two or more control rods 130, when managing the control rods 130 in a group, one control rod 130 should be registered per group. Allow. Thereby, since the group is different for each one, the order is determined. Instead of group management of the sequence, the sequence may be configured by simply registering selections and operations in order. Also, only in the test mode, the order may be determined even within the same group.

  FIG. 6 is a flowchart for explaining the operation of the control rod operation monitoring device. In step 402, the operator selects the control rod 130 from the selection input unit 222. In step 404, the operation monitoring unit 300 determines whether or not the selection matches the sequence. If the selection does not match, the operation monitoring unit 300 displays a selection error on the display unit 230 in step 405. In step 405, a pullout prevention signal is transmitted from the operation monitoring unit 300 to the control unit 200. In step 405, the selection matches the sequence. In step 406, it is determined whether or not the sequence is an insertion. If it is an insertion, a pullout prevention signal is transmitted in step 407. In either case, a pullout prevention signal is transmitted from the operation monitoring unit 300 to the control unit 200. In the case of a selection error, the operator can start over from the selection input (step 402) at this point. In any case, in the case of an insertion operation, it is possible to proceed to the next step as it is.

  In step 408, the operator performs an extraction or insertion operation from the operation unit 220. If the operation is “insert” in step 408, the control unit 200 executes the insert operation in step 410. In step 412, the operation monitoring unit 300 determines whether or not the position (pos) of the control rod 130 matches the sequence. If not, the operation monitoring unit 300 displays an insertion error on the display unit 230 in step 414. However, it does not prevent insertion.

  If the operation is “pull out” in step 408, the operation monitoring unit 300 determines in step 418 whether a selection error has occurred. If a selection error has occurred, the operation monitoring unit 300 is already displaying the selection error on the display unit 230 in step 405, and a pullout prevention signal is also transmitted to the control unit 200. It ends as it is.

  If a selection error has not occurred in step 418, the control unit 200 executes a pulling operation in step 420. Next, in step 422, the operation monitoring unit 300 determines whether or not the position (pos) of the control rod 130 matches the sequence. If the sequence does not match, the process proceeds to step 424, and the operation monitoring unit 300 transmits a drawing error and a drawing prevention.

  The test mode as described above can be suitably used as a mode for performing a reactor shutdown margin inspection or a cold criticality test. These inspections and tests must be performed with particular care when operating the control rods, even among the tests performed during periodic inspections at the nuclear reactor. In addition, the reactor is tested by inserting and removing a small number of control rods, and the order of operation of the control rods is also an important matter. Therefore, by applying the present invention to the rodworth minimizer, these tests can be performed more safely and reliably.

  For example, in the reactor shutdown allowance inspection, by inputting two control rods 130 to the sequence, it is possible to display a guide in which the correct extraction and insertion are mixed, and the control rod 130 is selected in the wrong order. In this case, it is possible to prevent the drawing without waiting for the drawing of one notch. In addition, by inputting three control rods 130 in the sequence, it is possible to perform a reactor shutdown margin inspection with the three control rods 130. This makes it possible to perform the reactor shutdown margin inspection more safely and reliably.

  In the cold temperature critical test, by inputting a sequence in which drawing and insertion are mixed, a sequence including a dispersion operation can be made. As a result, guide display can be performed for the distributed operation, and it is possible to prevent the distributed operation by the wrong control rod 130. Similarly to the case of the reactor shutdown margin inspection, when the control rod 130 is selected in the wrong order, it is possible to prevent the extraction without waiting for the extraction of one notch. This makes it possible to perform the cold temperature criticality test more safely and reliably.

  The control rod operation monitoring device 210 according to the present embodiment can be used in common for these tests. Moreover, it can apply similarly also about the other test accompanying operation of a control rod, and can enjoy the advantage of this invention.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to the example which concerns. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

  For example, in the above embodiment, the display unit 230 and the selection input unit 224 have been described as being provided separately. However, the present invention is not limited to this, and the display unit may also serve as the selection input unit. As a specific example, the display unit is a touch panel, and any control rod can be selected by touching the displayed matrix. Note that the display unit is not necessarily a touch panel, and the control rod may be selected by a pointing device such as a mouse, or the matrix on the screen may be selected by touching with a light pen or the like.

  INDUSTRIAL APPLICABILITY The present invention can be used as a control rod operation monitoring device (rodworth minimizer) that monitors the operation procedure of control rods and warns or prevents an operation when it is different from a sequence inputted in advance.

DESCRIPTION OF SYMBOLS 110 ... Reactor pressure vessel, 120 ... Fuel assembly, 130 ... Control rod, 140 ... Control rod drive system, 200 ... Control part, 210 ... Control rod operation monitoring apparatus, 220 ... Operation part, 222 ... Selection input part, 226 Operation input unit 226a Insertion switch 226b Extraction switch 226c Continuous extraction switch 230 Display unit 230a Operation display region 230b Guide display region 300 Operation monitoring unit 310 Sequence input unit 320: Storage unit

Claims (4)

A sequence input unit for inputting in advance a sequence comprising a combination of control rod selection information and pulling or inserting operations;
A display unit for displaying the next operation based on the sequence;
A selection input section for selecting an arbitrary control rod;
An operation input unit for operating pulling out or inserting with respect to the selected control rod;
An operation monitoring unit that prevents the operation of the control rod when an operation different from the sequence is performed;
In a control rod operation monitoring device equipped with
The control rod operation monitoring device, wherein the sequence input unit can input a sequence in which extraction and insertion are mixed as a test mode. A sequence input unit for inputting in advance a sequence comprising a combination of control rod selection information and pulling or inserting operations
A display unit for displaying the next operation based on the sequence;
A selection input section for selecting an arbitrary control rod;
An operation input unit for operating pulling out or inserting with respect to the selected control rod;
An operation monitoring unit that prevents the operation of the control rod when an operation different from the sequence is performed;
In a control rod operation monitoring device equipped with
When the control rod is selected from the selection input unit and the selection is different from the sequence, the operation monitoring unit blocks the operation of the control rod. . The sequence input unit can input a sequence for two or more control rods,
The control rod operation monitoring apparatus according to claim 1, wherein the operation monitoring unit determines the order of selected control rods in units of one.   The control rod operation monitoring apparatus according to claim 1 or 2, wherein the test mode is a mode for performing a reactor shutdown margin inspection or a cold temperature criticality test.

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