KR200366271Y1 - Tritium Eradication Bag - Google Patents

Abstract

The present invention relates to a tritium removal bag. The bag of the present invention comprises: a suction means comprising an upper cover and a filtering net including a lower cover and a breathing hose connection space; A purifier in which tritium molecules are exchanged using a purifying section surrounded by a heat insulating material and the filter network; A water collecting body including a waterproof bag for preventing leakage and an absorber absorbing the molten liquid; It consists of the upper cover, the purifying section, and the back plate to which the waterproof bag is attached.

Description

Tritium Eradication Bag

The present invention inhales tritium that emits low-energy beta rays contained in the air at places such as deuterium-type nuclear power plants, radioactive isotopes, hospitals, research centers, and general industrial sites. The present invention relates to a tritium removal bag that can be removed.

The coolant and moderator of heavy water reactor type nuclear power plant uses heavy water (D2O). This heavy water (D2O) is combined with neutrons during reactor output operation to be tritiated (TDO or THO) to have radioactivity. It will increase as it increases. Tritium, which is in the vapor state of the air, enters the respiratory action (66%) of the worker or enters the body (33%) through the skin.

Because tritium has a short beta tablet, the extracorporeal radiation hazard is not very high, because human skin consists of a 20-100 μm thick outer skin and a 1-3 mm thick dermis. That is, electrons emitted from tritium outside the body cannot reach the target cells sensitive to radiation, and tritium can be damaged by the radiation emitted from the tritium only when present in the body. The most important thing is to prevent tritium inhalation by (inhalation: 66%).

On the other hand, as shown by the International Commission on Radiological Protection (ICRP) recommendations, the global trend has lowered individual dose limits for workers to 20 mSv / year (ICRP-60). The law is being amended for application at 20mSv / year.

The air tritium removal facility used in the conventional deuterium nuclear power plant consists of one large system (D2O Vapour Recovery System) that simultaneously removes tritium and moisture from each region. The principle of removal is the adsorption and separation of adsorption of moisture (including tritium) with a desiccant agent and drying and re-using the desiccant by heat when the desiccant is saturated, and air containing tritium. It is a large-scale facility using the principle of removing tritium by introducing into water.

However, the conventional tritium removal equipment is relatively large in size and requires a lot of equipment cost, and is a passive removal means waiting for tritium contained in the air to be adsorbed to the desiccant in a vapor state, and the installation position is fixed. Therefore, it is difficult to actively cope with the leakage device of tritium, it is difficult to reach the effective removal of tritium.

In addition, there is a relatively small amount of portable tritium remover in addition to the large sized equipment, and such a mobile tritium remover also has a problem that it is not easy to enter a narrow work place in a nuclear power plant.

The present invention is to solve the above problems, by using the molecular principle that the material on the head is molecular exchange with each other when gas and liquid (ice) contact, by removing tritium in the air into the ice space, Repair of coolant and moderator filled with heavy water or sudden leakage of heavy water which may be caused by equipment failure and human error, or mistake of level indicator seals such as valves, turbine connectors and sight glasses. It can cope with almost all contaminated areas such as leakage, removal of reactor system, accessories at the end of reactor pressure tube, fuel loading, treatment and transport of tritium water, slurring of used ion exchange resin, etc. The purpose is to provide a tritium removal bag to proactively cope with the limitation of area and space.

1 is a front view of an embodiment of a tritium removal bag according to the present invention.

Figure 2 is a front sectional view of an embodiment of a tritium removal bag according to the present invention.

Figure 3 is an embodiment side view of the tritium removal bag according to the present invention.

Figure 4 is a side cross-sectional view of one embodiment of the tritium removal bag according to the present invention.

Figure 5 is a perspective view of one embodiment of the tritium removal bag according to the present invention.

6 is a wearing diagram according to one embodiment of the tritium removal bag according to the present invention.

Explanation of symbols on the main parts of the drawings

110: upper cover 120: lower cover

130 connection portion 140 filter network

150: purifying unit 160: waterproof bag

170: absorber

Tritium removal bag according to the present invention for achieving the above object, the suction means consisting of a top cover and a filter net including a lower cover and a breathing hose connection space; A purifier in which tritium molecules are exchanged using a purifying section surrounded by a heat insulating material and the filter network; A water collecting body including a waterproof bag for preventing leakage and an absorber absorbing the molten liquid; The above-mentioned upper cover, purifying section, characterized in that consisting of a back plate is attached to the waterproof bag.

Specifically, the tritium present in the vapor state in the air is introduced into the gap between the lower cover and the upper cover by the breathing of the worker wearing a mask connected through the breathing hose connecting space of the upper cover, and the introduced tritium is Molecular exchange is achieved by passing through the purification section filled with ice surrounded by the insulation through the filter network and the worker breathes the purified air through the breathing hose connection space.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same components have the same number as much as possible even if displayed on different drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a front view of an embodiment of a tritium removal bag according to the present invention, Figure 2 is a front sectional view of an embodiment of the tritium removal bag according to the present invention, Figure 3 is a tritium removal bag according to the present invention One embodiment side view, Figure 4 is one embodiment side cross-sectional view of the tritium removal bag according to the present invention, Figure 5 is an embodiment appearance perspective view of the tritium removal bag according to the present invention, Figure 6 is the present invention Wear according to an embodiment of the tritium removal bag according to.

Tritium, which is present in the vapor state in the air, is breathed by a worker wearing a mask connected through a breathing hose connecting space 130 of the upper cover 110, as shown in FIG. Introduced into the gap of 110, the tritium flows through the purifying unit 150 filled with ice surrounded by the heat insulating material through the filter network 140, as shown in FIG. The worker breathes through the breathing hose connection space 130. As illustrated in FIGS. 1 to 5, the tritium removing bag according to the present invention includes a lower cover 120 and a breathing hose connection part for sucking air containing tritium (TDO or THO) in an evaporative vapor state. Suction means consisting of a top cover 110 and a filter net 140, including 130; A purifier in which tritium molecules are exchanged using a purifier 150 surrounded by a heat insulating material and the filter network; A water collecting body including a waterproof bag 160 to prevent leakage and an absorber 170 to absorb the molten liquid; The upper cover 110, the purifying part 150, the waterproof bag 160 is attached to the back plate is attached.

The suction means for suctioning tritium-containing air includes a lower cover attached to one side of the push buckle and a breathing hose connection space for attaching to the upper cover and the upper cover and an upper cover attached to the opposite side of the push buckle and the filter net. Consists of the upper cover and the lower cover is preferably to use a rubber coated TWILL fabric on the inside for waterproofing and pollution prevention, and the upper cover is a support to be supported when connecting the breathing hose to the breathing hose connection space The inside of the support is attached with insulation to block the temperature difference with the outside to increase the melting time of the ice.

Among the suction means, the filter network preferably uses MESH fabric to prevent the inflow of air from the outside and the inflow of the ice reacted with tritium into the above-mentioned absorbent.

The purifier with molecular exchange of tritium and ice consists of a purge section surrounded by insulation to block the temperature from the outside. The purification section surrounded by the insulation uses an ice net to facilitate the replacement of ice, and facilitates ice exchange by mounting a zipper on the lower filter net.

On the other hand, the purification section connected to the upper cover is sewn onto the body plate to avoid direct heat transfer with the body plate, thus enhancing the operator's comfort during work.

The water collecting body is composed of a waterproof bag for preventing leakage and an absorber for absorbing the molten liquid. The waterproof bag is fixed by sewing only at the top of the body plate to prevent leakage by sewing, and the pocket end of the waterproof bag is When the worker leans back, the waterproof bag and the liquid of the absorber should be higher than the filter net so as not to flow to the outside of the tritium removal bag, and the lower cover and the waterproof bag are fixed to each other so as to be in close contact with each other.

In addition, the absorbent is melted to prevent the flow of the liquid collected in the waterproof bag through the filter net by gravity to prevent the flow to the outside of the tritium removal bag and the liquid absorbing power to prevent the liquid rumble during work To facilitate the exchange.

The body plate, which is the source of sewing of the upper cover, the purifying section and the waterproof bag mentioned above, uses a shoulder strap for the efficiency of movement. At this time, in order to maintain the balance and prevent external leakage of the liquid in the water collector, a waist strap and a shoulder strap equipped with a push buckle are used on both sides, and a breathing hose fixing ring is attached to one side of the shoulder strap and the other shoulder The string is WEBBING treated to attach the measuring equipment (TLD, ADR, etc.).

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible in the art without departing from the technical spirit of the present invention. It will be clear to those of ordinary knowledge.

As described in detail above, the present invention utilizes molecular principle that molecules in two phases exchange molecules with each other when gas and liquid (ice) come into contact with each other. Maintenance work such as coolant and moderator filled with oil, or sudden heavy water leakage caused by equipment failure and human error, or mistakes in level indicator seals such as valves, turbine connectors and sight glasses. It can cope with almost all contaminated areas such as leakage, removal of reactor system, accessories at the end of reactor pressure tube, fuel loading, treatment and transport of tritium water, slurring of used ion exchange resin, etc. It has the effect of actively coping with the limitation of area and space.

In addition, mass production is possible by simplifying the interior of the devise for mass production, not large scale equipment, and it is possible to reduce the production cost according to mass production, and the subsidiary materials used as internal purification section or absorber can also be recycled. Therefore, there is a cost reduction effect.

Claims (2)

A suction means comprising an upper cover and a filtering net including a lower cover and a breathing hose connection space; A purifier in which tritium molecules are exchanged using a purifying section surrounded by a heat insulating material and the filter network; Waterproof pouches to prevent leakage; The tritium removal bag including the upper cover, the back plate to which the purification section is attached. The bag for removing tritium according to claim 1, wherein the tritium removal bag comprises a water collector including an absorber for absorbing liquid dissolved in the waterproof bag to prevent leakage.