JP2016061714A - System, method and program for supporting premise movement in nuclear facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique for supporting premise movement in a nuclear facility safe and efficient on work management by previously collecting dose and obstacle positions of a site and optimizing an access path to the site and an evacuation path from the site to show them to site workers.SOLUTION: A system 10 for supporting premise movement compromises: a node information holding part 12 for holding identification information on a node 31 set at a branch point of movement on map data 11 showing premises; a link information holding part 13 for holding data information on an exposure dose during movement linked as a cost with a link 32 connecting two nodes 31 allowing direct movement; a start point/end point setting part 15 for setting the start and end points of movement out of a plurality of nodes 31; and a route selection part 16 for selecting a moving route 21 on the basis of the total of costs correlated with a plurality of links 32 coupled from the start point to the end point.SELECTED DRAWING: Figure 1

Description

  Embodiments of the present invention relate to a campus movement support technique in a nuclear facility where an area with a high exposure dose exists.

In nuclear facilities such as nuclear power plants, there is a need to move the campus for various reasons such as periodic inspections. The premises of nuclear power plants have radiation sources everywhere and the structure of the building is complicated.
For this reason, in nuclear facilities such as a nuclear power plant, there is already a radiation management system that easily performs access control in an access area and collection of dose equivalent results in a radiation management area.

JP 2001-281339 A

  However, when a worker selects a route by individual judgment when accessing or evacuating from the target site, unnecessary man-hours are generated or unexpected exposure is caused, which is not preferable in terms of work management.

  The embodiment of the present invention has been made in consideration of such circumstances, and collects the dose / failure position of the site in advance, optimizes the access route to the site and the evacuation route from the site, and presents it to the site worker. The purpose of this is to provide safe and efficient nuclear facility movement support technology for work management.

  In the campus movement support system in the nuclear facility according to the embodiment, the node information holding unit that holds the node identification information set at the branch point of movement on the map data representing the campus and the two nodes that can move directly are connected. A link information holding unit that holds data information in which the exposure dose at the time of movement is linked to the link as a cost, a start / end point setting unit that sets a start point and an end point of the movement from among the plurality of nodes, and the start point A route selection unit that selects a movement route based on a sum of the costs associated with each of the plurality of links that are connected from the terminal to the end point.

  According to the embodiment of the present invention, the nuclear dose and obstacle position are collected in advance, and the access route to the site and the evacuation route from the site are optimized and shown to the site worker. Provide on-site mobility support technology for facilities.

1 is a block diagram showing a campus movement support system in a nuclear facility according to a first embodiment of the present invention. (A)-(D) Explanatory drawing of the node and link which are set on the map data of a premise. (A) A perspective view of the campus showing the start point (START) and end point (GOAL) of the movement, (B) A map data plane showing the movement route connecting the start point (START) and the end point (GOAL) Figure. A table showing weighting factors associated with link attribute information (wide passage, narrow passage, stairs, vertical ladder, elevator). The table which shows the information of the total exposure dose, the total movement time, and the movement difficulty in a plurality of searched movement routes. The flowchart explaining operation | movement of the campus movement assistance system in the nuclear facility which concerns on 1st Embodiment. The block diagram which shows the campus movement assistance system in the nuclear facility which concerns on 2nd Embodiment of this invention.

(First embodiment)
Hereinafter, a campus movement support system (hereinafter simply referred to as a campus movement support system) in a nuclear facility according to an embodiment of the present invention will be described with reference to the accompanying drawings.
The campus movement support system 10 according to the first embodiment includes a node information holding unit 12 that holds identification information of the node 31 set as a branch point of movement on the map data 11 (FIG. 2) representing the campus, and a direct movement A link information holding unit 13 for holding data information in which the exposure dose at the time of movement is linked to the link 32 connecting the two possible nodes 31 as a cost, and a starting point for setting a starting point and an ending point of movement among the plurality of nodes 31 / End point setting unit 15 and route selection unit 16 that selects moving route 21 (FIG. 3) based on the sum of costs associated with each of a plurality of links 32 connected from the start point to the end point. .

The map data 11 represents the internal structure of the three-dimensional nuclear facility 20 shown in FIG. 3 (A) divided into floors as shown in FIG. 3 (B). Furthermore, as shown in FIG. 2 (A), the floor plan is an area 22 where the worker can move and the arrangement of the entrance / exit 23 communicating with the adjacent area 22 on the horizontal plane.
The map data 11 of each floor is linked to each other by a moving path 24 in the vertical direction such as a staircase, a vertical ladder, and an elevator.

  In the setting input unit 41 (FIG. 1), the worker can set various setting units 40 (node setting unit 43, prohibited area setting unit 44, start / end point setting unit 15, link setting unit 45, cost information setting unit 46, weight). A man-machine interface for inputting necessary information to the coefficient setting unit 47).

As shown in FIG. 2C, the node setting unit 43 (FIG. 1) sets the node 31 at the branch point of movement on the map data 11.
Here, as shown in FIG. 2B, the branch point of movement includes the entrance / exit 23, the upper or lower end of the vertical movement path 24, the work point 25 in the area 22, and the like.
In addition to the case where these branch points can be extracted from the map data 11 and automatically set, they can be manually set from the setting input unit 41 at arbitrary positions in the map data 11.
The node 31 set in this way is associated with the identification information and the position information in the map data 11 and is retained in the node information retaining unit 12.

As shown in FIG. 2D, the link setting unit 45 sets a link 32 that connects two nodes 31 that can move directly.
Here, the direct movement means that when moving from one node 31 on the map data 11 to another node 31, it is possible to move without passing through the other nodes 31.

In other words, the link 32 is set by combining two of the plurality of nodes 31 located inside the area 22 of one section or at the boundary thereof.
The link 32 set in this manner is held in the link information holding unit 13 by associating cost information described later with the identification information.

The cost information setting unit 46 associates costs (exposure dose, travel time, etc.) to each link 32 set by the link setting unit 45 by manual input from the setting input unit 41. Alternatively, if the radioactivity distribution on the map data 11 is known, the costs (exposure dose, travel time, etc.) corresponding to each of the links 32 can be automatically associated.
In this way, the data information in which the cost is associated with each identification ID of the link 32 is held in the link information holding unit 13.

Thus, the exposure dose associated with each link 32 is set based on the radiation dose value measured in the area 22 where the link 32 is pasted. In addition, the movement time associated with each link 32 is set based on the time actually taken for movement between branch points (entrances 23 and the like) located at both ends of the link 32.
Note that the costs associated with the links 32 having different moving speeds depending on the traveling direction, such as the stairs 24 and the ladder, take different values depending on the traveling direction.

The weighting factor setting unit 47 sets a weighting factor that causes the cost (exposure dose, moving time, etc.) associated with each link 32 to be multiplied.
The movement speed of the workers in the area 22 varies depending on whether the equipment is a normal work clothes or protective clothes, or is empty-handed, a light weight of hand-carried items or a heavy object using a cart, etc. Is.
Furthermore, the movement speed of the worker varies depending on the link attribute indicating whether the area 22 is a wide passage, a narrow passage, a staircase, a vertical ladder, or an elevator.
There are also links 32 that cannot be moved depending on the equipment of the worker and the transported items.

Therefore, as shown in FIG. 4, the weighting factor setting unit 47 sets different weighting factors depending on the combination of the equipment of the worker, the transported goods, and the attributes of the links, and holds them in the weighting factor holding unit 18.
Thereby, the cost (exposure dose, moving time, etc.) in each link 32 can be set more suited to the moving speed in the field work.
Furthermore, it is possible to accurately guide the movement route that truly minimizes the exposure dose, and to accurately predict the exposure dose of the worker engaged in the work.

In addition, the numerical value described in each cell of FIG. 4 is a numerical value representing the movement difficulty by a 10-level evaluation from 1 to 10. And this value is set to 10 which is the fastest moving speed under the condition of moving “wide passage” with “no” carrying equipment in normal work clothes, and the relative moving speed under the assumed condition of each cell is set. Represents.
In addition, there is a route that cannot be moved depending on a combination of conditions, and the cell is “impossible”. In addition, by deriving an average value of weighting factors associated with each of a plurality of links constituting one movement route 21, the movement difficulty of the movement route 21 can be numerically evaluated.

The prohibited area setting unit 44 (FIG. 1) sets the prohibited area 22a (FIG. 2) on the map data 11 in association with the calendar information 17, and the travel route 21 including the link 32 pasted on the prohibited area is It is excluded from selection.
In nuclear power plants, there are areas where entry and traffic are prohibited during the normal operation period, periodic inspection period, emergency situations, etc., due to the radioactivity level that depends on the reactor state, material loading and unloading, and work. .

The target and period of such an area 22 that is prohibited from entry are planned in advance.
Therefore, the prohibited area setting unit 44 (FIG. 1) acquires the map data 11 on the premises of the target unit from the input information from the setting input unit 41, and sets the designated area 22 as the prohibited area 22a with a time limit. To do.

The start point / end point setting unit 15 sets the start point S and the end point G from among the plurality of nodes 31 based on the input information from the setting input unit 41.
Note that the input operation to the setting input unit 41 includes not only directly specifying a branch point (such as the entrance / exit 23) on the map data 11, but also specifying an area 22 or an arbitrary position.
As described above, when the setting input unit 41 does not directly specify the branch point, there may be a plurality of candidates for the node 31 set as the start point or the end point.

The route search unit 16 selects the moving route 21 based on the sum of costs associated with each of the plurality of links 32 connected from the start point S to the end point G.
Thus, the algorithm to find the optimum route of travel 21 connecting the nodes 31 _G, which is set to the end G from node 31 _s, which is set to the starting point S may be appropriately used a known.

As such an optimal travel route 21, one having a small sum of exposure doses associated with each of the plurality of links 32 configuring the travel route 21 is selected.
Further, the sum of the travel times associated with each of the plurality of links 32 is also taken into consideration in selecting the travel route 21.

The route map generation unit 51 generates a route map indicating the travel route 21 (21 _{1 to} 21 ₄ ) in the map data 11 and causes the result display unit 52 to display the route map 21 as shown in FIG.
Thus, in the route map displayed two-dimensionally for each hierarchy, the area where the moving route 21 has the start point S and the area where the end point G is located are clearly shown. Further, a plurality of travel routes 21 connecting the start point S and the end point G are displayed on the screen.

A vertical movement path 24 that connects route maps of different levels is represented by connecting nodes 31 at both ends thereof with broken lines as shown in the figure.
Although not shown, the prohibited area 22a (FIG. 2A) where the passage of workers is prohibited is also clearly shown in the route map.

Further, as shown in FIG. 5, the result display unit 52 also displays a table showing information on the total exposure dose, the total movement time, and the movement difficulty in the plurality of searched movement routes 21.
In this way, candidates for the movement route 21 are selected in order from the smallest total exposure dose, and the total movement time is added to each candidate.

Furthermore, an average value of weighting factors associated with each of a plurality of links constituting the movement route 21 is added as the movement difficulty level.
Further, the number of candidates for the movement route 21 based on the sum of the exposure doses can be narrowed down and the sorting can be performed again using the movement time or the movement difficulty as a parameter.
Thereby, the operator can select an optimal one from a plurality of candidates for the movement route 21 in accordance with the actual situation at the site.

  In addition, regarding the travel route 21 including the link 32 passing through the area 22 adjacent to the prohibited area 22a, the fact can be described in the remarks information of the table (FIG. 5) to alert the operator. . For example, it is described as “There is a door to a restricted area (XX room) on the route”.

  As described above, according to the present embodiment, when moving within the premises of the nuclear facility 20, the route map (FIG. 3B) and the table (FIG. 5) are clearly indicated, thereby reducing the exposure dose and operating conditions. A moving route 21 suitable for the user can be selected from a plurality of candidates.

Next, the operation of the campus movement support system 10 in the nuclear facility will be described with reference to the flowchart of FIG.
Map data representing the premises of the nuclear facility 20 is acquired (S11). Then, the node 31 is set at the branch point of movement on the map data (S12), and identification information is given and held in the memory (S13).

A link 32 connecting two nodes 31 that can be directly moved is set (S14), and identification information is given and held in a memory (S15). Each of the plurality of links 32 is associated with the exposure dose and movement time during movement as costs, and is stored in the memory (S16).
Then, the node 31 close to the area 22 where the worker is present is set as the start point S, and the destination area 22 or the work point 25 is set as the end point G (S17).
The movement route 21 is selected based on the sum of the costs (exposure dose, movement time) associated with each of the plurality of links 32 connected from the set start point S to the end point G (S18).

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIG. In FIG. 7, portions having the same configuration or function as those in FIG. 1 are denoted by the same reference numerals, and redundant description is omitted.
A campus movement support system 10 according to the second embodiment includes a data transmission unit 55 that transmits the generated route map to the mobile terminal 53 and a data reception unit that receives detection data of the external detector 54 in addition to the configuration of FIG. 56 and a data update unit 57 that updates cost information based on the received detection data.

  As an operation of the on-site movement support system 10, a worker on the premises of the nuclear facility 20 operates independently to search for a movement route 21 from the current area (start point S) to the destination area (end point G). There is a case. In this case, the on-site movement support system 10 of the first embodiment may be constructed in a portable terminal such as a tablet that is carried by an operator.

On the other hand, there is a case where a system for searching for the movement route 21 is provided outside the nuclear facility 20 where the worker moves, and only the result of the selected movement route 21 is transmitted to the worker.
The on-site movement support system for a nuclear facility according to the second embodiment applied to the latter case will be described.

The data transmission unit 55 added in the second embodiment causes the generated route map information to be transmitted to the portable terminal 53 possessed by a worker on the premises.
As a result, when a worker moves across a plurality of areas 22 as destinations, in the area 22 of a certain destination, the residence time required to search for the moving route 21 to the next destination area is reduced. Can be reduced.

Furthermore, with regard to the information regarding the exposure dose in the area 22, it is necessary to monitor a situation that changes from moment to moment and reflect the result in route search.
Therefore, the detection data is received by the data receiving unit 56 on the assumption that the external detector 54 for detecting the radiation dose value is installed in the premises of the nuclear facility 20.
Alternatively, the portable external detector 54 may be carried by the worker together with the portable terminal 53, and the position information and the radiation dose value of the worker may be transmitted as data. Thereby, the radiation dose value that the worker actually receives by moving the area 22 can be reflected in the route search.
Based on the detection data received from the external detector 54, the data update unit 57 updates the cost (exposure dose) information associated with the corresponding link 32.

In addition, it is also possible to acquire on-site information of the nuclear facility 20 from a worker who is moving on the premises via the portable terminal 53 possessed and reset the weighting factor.
That is, when a worker in the middle of moving finds a failure on the moving route 21 such as pipe breakage or flooding, this information is sent from the portable terminal 53 to the data receiving unit 56.

Then, it acts on the cost information setting unit 46 and the weight coefficient setting unit 47 via the data updating unit 57 to update the information held in the holding units 13 and 18.
This makes it easy to change the travel route 21 selected before the start of travel to an optimal route reflecting newly acquired information during the travel.
In addition, even if a situation occurs in the course of movement that would overturn the precondition for selecting the current route, it is possible to promptly present another route that can reach the end point safely and efficiently.

  According to the on-site movement support system in the nuclear facility of at least one embodiment described above, the cost related to the exposure dose is linked to each of the links connecting the nodes set as the branch points of the on-site movement. It is possible to optimize the access route and the evacuation route from the site and show it to the worker.

Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, changes, and combinations can be made without departing from the scope of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.
In addition, the constituent elements of the campus movement support system in the nuclear facility can be realized by a computer processor, and can be operated by the campus movement support program in the nuclear facility.

  DESCRIPTION OF SYMBOLS 10 ... Campus movement support system, 11 ... Map data, 12 ... Node information holding part, 13 ... Link information holding part, 15 ... Start point / end point setting part, 16 ... Route selection part, 17 ... Calendar information, 18 ... Weight coefficient holding 20 ... Nuclear facility, 21 ... Movement route, 22a ... Prohibited area, 22 ... Area, 23 ... Entrance / exit, 24 ... Vertical movement route (stairs), 25 ... Work point, 31 ... Node, 32 ... Link, 40 ... Setting unit, 41 ... Setting input unit, 43 ... Node setting unit, 44 ... Prohibited area setting unit, 45 ... Link setting unit, 46 ... Cost information setting unit, 47 ... Coefficient setting unit, 51 ... Route map generation unit, 52 ... Result display section, 53 ... Portable terminal, 54 ... External detector, 55 ... Data transmission section, 56 ... Data reception section, 57 ... Data update section, S ... Start point, G ... End point.

Claims (8)

A node information holding unit that holds node identification information set at a branch point of movement on map data representing a campus;
A link information holding unit for holding data information in which the exposure dose at the time of movement is linked to the link connecting the two nodes that can be directly moved;
A start / end point setting unit for setting a start point and an end point of the movement from the plurality of nodes;
A campus movement support system in a nuclear facility, comprising: a route selection unit that selects a movement route based on a sum of the costs associated with each of the plurality of links connected from the start point to the end point. In the campus movement support system in the nuclear facility according to claim 1,
The on-site movement support system in a nuclear facility, wherein the travel time for each link is also associated with the cost. In the campus movement assistance system in the nuclear facility according to claim 1 or 2,
A prohibited area setting unit that sets a prohibited area on the map data in association with calendar information, and that excludes the travel route including the link attached to the prohibited area from the selection. On-site movement support system in a nuclear facility. In the campus movement assistance system in the nuclear facility according to any one of claims 1 to 3,
A campus movement support system in a nuclear facility, further comprising: a weight coefficient holding unit that holds the weight coefficient to be multiplied by the cost in association with each link. In the campus movement assistance system in the nuclear facility according to any one of claims 1 to 4,
A route map generating unit for generating a route map indicating the travel route in the map data;
And a data transmission unit for transmitting the generated route map to a portable terminal. In the campus movement assistance system in the nuclear facility according to any one of claims 1 to 5,
A data receiver for receiving detection data of the external detector;
And a data updating unit that updates the cost based on the received detection data. Holding node identification information set at a branch point of movement on map data representing a campus;
Holding data information in which the exposure dose at the time of movement is linked to the link connecting the two nodes that can be moved directly;
Setting a starting point and an ending point of the movement among a plurality of the nodes;
Selecting a movement route based on the sum of the costs associated with each of the plurality of links linked from the start point to the end point. On the computer,
Holding node identification information set at a branch point of movement on map data representing a campus;
A step of holding data information in which the exposure dose at the time of movement is linked to the link connecting the two nodes that can be directly moved;
Setting a starting point and an ending point of the movement among a plurality of the nodes;
And a step of selecting a movement route based on a sum of the costs associated with each of the plurality of links linked from the start point to the end point.

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