JPH02287297A - Transportation method of radioactive waste vessel - Google Patents

Abstract

PURPOSE:To make possible safe and economical transportation of a waste vessel by allowing the method to calculate a combination of total weight of the specified number of radioactive waste vessels loaded on a unit transportation means, a total dose rate and the maximum value in which a transportation exponent is shown within the limits. CONSTITUTION:A transporting radioactive waste vessel (thereafter referred as a vessel) is transferred to an inspection line to manually or automatically measure weight per vessel and a dose rate so as to stick the label of a bar code while the vessel on which a measured value is input in a memory and an inspection is completed is arranged in a stock yard once. Next, the combination of total weight of the specified number of vessels loaded on a unit transportation means of a container, a truck, a freight car and the like, a total dose rate and the maximum value in which a transportation exponent is shown within the limits is calculated by an operation device and the vessel is taken out as it is chosen by an automatic transport machine from the stock yard on the basis thereof to load on the unit transportation means. Thereby, the vessel can be efficiently transported within permission of a regulation.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for transporting radioactive waste containers for efficiently transporting radioactive waste containers within the range permitted by laws and regulations.

(Conventional technology) Currently, radioactive waste generated from nuclear facilities is stored in radioactive waste containers such as drum cans and stored in storage warehouses, but in the future it is planned that operation of land-based disposal facilities will begin. be. At that time, the radioactive waste containers that have been stored in various locations will be stored in special containers and transported to the destination by land transport using vehicles such as trunks and freight cars, or sea transport using ships. A need arises.

Therefore, related industries are already considering transportation methods for this purpose, but the transportation of radioactive waste is regulated by domestic transportation regulations, such as the transportation index (radiation at a distance of 1 meter from the surface of the transported object! There are regulations such as that the maximum value of the amount expressed in millirem units must not exceed 50. Furthermore, each means of transportation naturally has a maximum load limit. Therefore, when the radioactive waste containers taken out from the storage warehouse are loaded one after another onto transportation means such as trucks, for example, a radioactive waste container with a high radiation dose rate happens to be on a truck that can carry eight radioactive waste containers. 6 due to the transport index limit.
It is expected that cases where only books can be loaded will occur frequently. However, to date, the present inventor is not aware of any published examples of specific means for solving such problems.

(Problems to be Solved by the Invention) The present invention solves these anticipated problems and develops a radioactive waste container that can transport radioactive waste containers most efficiently within the scope permitted by laws and regulations. It has been completed to provide a comprehensive method.

(Means for solving the problem) The above problem is to detect the weight and radiation dose rate of radioactive waste containers to be transported, and to detect the total weight of a predetermined number of radioactive waste containers loaded on a unit transport means. , calculates the combination in which the total radiation dose rate and transport index have the maximum value within a range that does not exceed the limit, and based on the calculation results, loads the unit transportation means and transports it to the destination. The problem is solved by a method of transporting radioactive waste containers.

In the present invention, radioactive waste containers to be transported are first sent one by one from storage to an inspection line, and the weight and radiation dose rate of each radioactive waste container are measured manually or automatically, and a bar code is attached to the container itself. Attach and display labels using etc.

The measured values are then stored individually in a storage device. In this way, for example, a radioactive waste container to be transported is inspected within a necessary period of time and placed in the dockyard.

Next, by an appropriate arithmetic device such as a microcomputer,
An adjustment is calculated so that the total weight, total radiation dose rate, and transport index of a predetermined number of radioactive waste containers loaded on a unit transportation means take maximum values within a range that does not exceed the limits. Here, the unit transportation means is, for example, one container, one trunk,
It means something like a freight car. Currently 11
In the case of ton trunks, it is being considered to store and transport eight wooden radioactive waste containers in a container. Calculate whether the radiation dose rate and transport index take the maximum value within the range that does not exceed the limit. The weight of each radioactive waste container in this example is about 500 kg on average, and the radiation dose rate on its surface is 200 millirem/Hr or less.

Then, based on the calculation results, radioactive waste containers placed in the stockyard are selected and taken out by an automatic transport machine, and loaded into unit transport means such as containers waiting on the side of the stockyard. It is done sequentially. Note that it is also possible to calculate how the selected, for example, eight radioactive waste containers should be arranged inside the unit transport means. After a predetermined number of radioactive waste containers are loaded onto the unit transport means in this way, transport to the destination is performed. At this time, measures such as installing an enclosure to prevent unauthorized persons from accessing the transportation vehicle and securely lashing the radioactive waste container to the transportation vehicle may also be taken. preferable.

It should be noted that although the above explanation has been made mainly in the case where the means of transportation is a truck, it goes without saying that the same applies to the case of other means of transportation.

(Effects of the Invention) As explained above, the present invention allows radioactive waste containers to be loaded and transported on a unit transport means most efficiently within the scope permitted by laws and regulations. , it is possible to safely and economically transport radioactive waste containers from their current storage facilities to destinations such as land-based disposal facilities. Therefore, the present invention provides 1i of future radioactive waste containers.
As a solution to the above problems, it will greatly contribute to the development of industry.

Claims (1)

[Claims] The weight and radiation dose rate of radioactive waste containers to be transported are detected for each container, and the total weight, total radiation dose rate, and transport index of a predetermined number of radioactive waste containers loaded on a unit transportation means are determined to meet the limit. A radioactive waste container is characterized in that a combination that takes the maximum value within a range not exceeded is calculated, and based on the calculation result, the radioactive waste container is loaded onto a unit transport means and transported to a destination. Transportation method.