A method of manufacturing a single site for the disposal of radioactive metal waste and monoblock site for the disposal of radioactive metal waste

 

(57) Abstract:

Usage: for the disposal of radioactive metal waste. The inventive method enables the production of single node consisting of a shell, a bottom and a lid. As the shell using a segment of radioactively contaminated piping of a nuclear reactor. Before attaching and the cover shell in the volume formed by the shell and the bottom, pour the pre-molten metal radioactive waste. 2 S. and 1 C.p. f-crystals, 2 Il.

The invention relates to a method of manufacturing a single site for the disposal of radioactive metal waste and to monoblock site manufactured by the above method.

A known method of manufacturing a single site for the disposal of radioactive metal waste, in which the hollow shell is attached to the bottom and the cover, and one node with a bottom and a lid attached to the membrane [1]

The basis of the invention is to create such a method of manufacturing a single site for the disposal of radioactive metal waste, which would allow the storage of radioactive metal waste and was given the opportunity to repeat the B/G, 0,37 B/G).

The technical result of the invention is the avoidance or reduction of operations decontamination.

Another part of the problem of the invention is to provide a single site for the disposal of radioactive metal waste, made according to the above method.

This problem is solved due to the fact that the method according to the invention, the shell uses a segment of radioactively contaminated piping of a nuclear reactor, and before attaching to the cover shell in the volume formed by the shell and bottom, pre-poured molten metal radioactive waste.

Another part of the problem is solved due to the fact that the shell monoblock node formed by the cut of radioactively contaminated piping of a nuclear reactor, the internal volume of this node is pre-filled with the molten metal radioactive waste.

Preferably, the internal volume of a single node was previously filled with molten metal radioactive waste and added a melting slag, and in the upper part of the volume of the water was recorded, cenie monoblock node according to the invention.

When the operations of dismantling nuclear reactors are formed of low or clubsarizona metal radioactive waste. This particularly applies to the case of the primary circuit of the reactor, when the typical contamination of surface 74 B/G diameter 1600 mm, thickness 25 mm, Taking into account the specific dimensions of the tubing forming the primary circuit, the activity in the mass of this system of pipes is 3.8 B/,

The method in accordance with the present invention is that the cut portion of the pipelines of the primary circuit of a nuclear reactor (Fig,1), length of, for example, from 1.3 to 1.6 m

Segment 1 of radioactively contaminated pipeline contains on its inner wall layer 2 from activated corrosion products or products of radioactive decay. This portion 1 forms a hollow shell of a single node, as shown in Fig.2. Then pour plate base, intended for the formation of the bottom 3 and the cover 4 monoblock site. For the formation of the above-mentioned bottom 3 and the lid 4 can, for example, to use your metal, for example, a support system of pipes, which are widely used in nuclear power plants. After this operation is fixed, for example, by welding to one of cocoaspell. These contaminated metal waste can be melted, for example, in an induction furnace operating at a frequency of network and having at the base of the liquid bath, or on the average frequency without liquid bath at the base, and the environmental pollution is prevented exhaust Cabinet in which the battery serial filters collect dust arising from the operation of casting. The molten metal in the furnace can be similarly transformed into the cast iron with the introduction of graphite in the metal mass in the range of up to 3% After the operation of casting the molten metal into the inner volume one node is fixed, e.g. by welding, at the other end of the segment 1 of the top cover 4, when this takes place the following:

If cast metal in the mass has activity below the permissible limit of 1.0 B/G, produce a casting in one node only steel or cast iron for use in the foundry industry as a metal support.

If cast metal has an activity higher than the permissible limit of 1.0 B/G, in the above-mentioned site is filled with molten metal 5, foundry slag 6 and fix the specified cement 7 in the upper part of the container before the lid 4 (Fig.2).

This mod is her hand monoblock site is not infected.

You can also be provided on the outer part of the segment 1 and the cover 4 rings 8 for engagement with the transportation of the specified single node.

The method in accordance with the present invention allows to reduce the volume occupied by the molten waste, compared with the waste stored in bulk in containers, the payout amount is from 7 to 15, which reduces the cost of storage. This eliminates or reduces operations decontamination for light structures and to reduce the amount of required drilling fluid.

In addition, this method also enables the dilution of surface activity in the volume sold ingot, which leads to increased radiological protection by autophagosome.

In addition, elements such as cesium will migrate in the slag, while cobalt-60 will remain fixed in a metal ingot.

The present invention can also be used for the disposal of radioactive metal waste not originating from the reactor graphite - gas, as, for example, when removing water-cooled.

1. A method of manufacturing a single node for utilise fact, what's in the envelope, use a segment of radioactively contaminated piping of a nuclear reactor, and before attaching to the cover shell in the volume formed by the shell and the bottom, pour the pre-molten metal radioactive waste.

2. All-in-one site for the disposal of radioactive metal waste containing shell, a bottom and a cover attached to the shell, wherein the shell is formed by a cut of radioactively contaminated piping of a nuclear reactor, the internal volume of a single node is pre-filled molten metal radioactive waste.

3. All-in-one site on p. 2, characterized in that the internal volume of the pre-filled molten metal radioactive waste and added a melting slag, and in the upper part of the volume of water recorded by the cement.

 

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