JPH09230092A - Reinforcing method for radiation shield - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a stable and high radiation shield effect by integrally fitting a reinforcing material to the inside or the outside of a bag or both thereof in such a manner that the reinforcing direction is directed to three-dimensions. SOLUTION: A radiation shield 1 is effectively reinforced in three-dimensional directions by the combination of a reinforcing member and the other reinforcing members to resist deformation in three-dimensional direction, and manufactured precisely. Water as a shield liquid is injected from a filling port 5 to fill a bag of the main body of the shield 1 with a shield liquid, and it becomes a plane while keeping the thickness and strength required for radiation shielding. A radiation ray source is covered with the bag, and when it is filled with water to the state of being expanded to a designated thickness, the radiation ray is shielded. A reinforcing line 8 is fixed to the shield 1 by a fixing cloth piece 9 and an adhesive agent 10. Thus, the reinforcing member is integrally formed so as to obtain stable strength and effect, so that high radiation shield function can be kept.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of reinforcing a radiation shield used to protect workers from radiation exposure during medical and general work, periodic inspection work of nuclear power plants, and the like.

[0002]

2. Description of the Related Art In recent years, work under radiation has been generalized in accordance with laws and regulations including medical care, general work, and nuclear power plants, and sufficient maintenance and inspection is performed in each industry. .

However, work under radiation is indispensable in all industrial fields, and under such circumstances, necessary measures are taken to reduce the radiation exposure of workers engaged in the work.

One of the methods is to utilize a radiation shield as proposed in Japanese Utility Model Laid-Open No. 61-147998.

This utilizes the property that radiation is attenuated by water, so that equipment and devices that may emit radiation by injecting water as a shielding liquid into a bag made of synthetic resin cloth are exposed. .

[0006]

However, the proposed radiation shield has practical drawbacks in the following points, and it has been necessary to improve its function and practical use in actual use.

Specifically, the proposed conventional radiation shield has a reinforcing wall made of the same material as that of the bag body for use within the strength range of the bag body. When the thickness and strength of the bag that requires a shielding effect commensurate with the size of the bag are required, the weight is considerable, and the reinforcing wall alone may cause deformation and damage of the bag during use. However, there is concern that the radiation shielding ability may be reduced depending on the degree of deformation damage.

The present invention enhances the deformation suppressing ability during use of the radiation shields as previously proposed,
It is an object of the present invention to provide a radiation shield having a shielding effect for sufficiently reducing exposure.

[0009]

In order to achieve the above-mentioned object, the present invention uses a synthetic resin cloth, a rubber plate or a composite thereof to form a bag body having a desired shape and size. In a radiation shield that injects and holds a shielding liquid inside the body and shields the radiation from the radiation source, a metal or non-metal wire or plate or both wire and board is used as a reinforcing material. Inside or outside of the bag,
Alternatively, on both the inner side and the outer side, there is provided a method of reinforcing a radiation shield that is integrally attached to the bag body to reinforce it in a three-dimensional direction, and when the reinforcing method according to the present invention is adopted, the shield body is provided. Since the shape is maintained in the three-dimensional direction, it is possible to stably maintain the thickness of the shielding liquid through which the radiation passes, and to obtain a stable radiation shielding effect.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view showing a radiation shield which is reinforced in the reinforcing method according to the present invention by using a wire made of metal and non-metal or a shape memory alloy so that the reinforcing direction is a three-dimensional direction from the inside. Then, FIG. 2 is a diagram showing a part of the side surface in a sectional view.

FIG. 3 shows a reinforcing method according to the present invention.
FIG. 4 is a front view showing a radiation shield which is reinforced by using metal and non-metal or shape memory alloy plates in a three-dimensional reinforcement direction from the outside, and FIG. FIG. Reference numeral 1 is a radiation shield, and 2 is its tread surface. The tread 2 is a synthetic resin or a rubber plate having a strength sufficient to bear the weight of the tread 2 because an operator walks or crosses with a trolley or the like when carrying equipment or the like. The composite forms a bag-shaped basic portion, to which the reinforcing member is integrally attached by adhesion, welding, or other known means.

Reference numeral 3 is a side wall portion as a reinforcing member that supports the tread surface 2.

The radiation shield 1 is effectively reinforced in a three-dimensional direction by a combination of the reinforcing member and other reinforcing members, is configured to resist deformation in the three-dimensional direction, and is precisely manufactured. ing.

Reference numeral 5 is a water inlet provided on the back of the tread 2.

Reference numeral 6 is an exhaust port provided in the front portion of the tread 2.

Although not shown, preferably, a connector for connecting the radiation shields 1 to each other is installed on the radiation shield 1.

The radiation shield 1 fills the bag body of the main body with the shield liquid by pouring water as the shield liquid from the water inlet 5, and becomes a flat surface while maintaining the thickness and strength required for the radiation shield.

The bag covers the radiation source and shields the radiation when the bag is filled with water in a state of being expanded to a predetermined thickness.

FIG. 1 shows a state in which the radiation shield 1 which is one of the reinforcing methods of the present invention is reinforced from the inside of the bag body, and 8 is a reinforcing wire as a reinforcing member.

Reference numeral 9 is a fixing cloth, and 10 is an adhesive.

The reinforcing wire 8 is fixed to the radiation shield by a fixing cloth 9 and an adhesive 10. FIG. 3 shows a state in which the radiation shield 1 which is one of the reinforcing methods of the present invention is reinforced from the outside of the bag body, and 11 as a reinforcing material is a reinforcing plate.

The reinforcing plate 11 is fixed to the radiation shield 1 with an adhesive to provide reinforcement.

The radiation shield 1 is configured as described above, and even when it is necessary to reinforce the radiation shield 1 depending on the size of the radiation source of the object to be shielded and the use conditions (temperature, pressure, etc.), the radiation shield 1 is more than conventional. It can be a radiation shield having high strength.

Although the method of reinforcing the radiation shield 1 of the present invention has been described above, the following cases are also regarded as a part of the present invention.

1. The shape of the radiation shield 1 is a sphere, a cylinder,
For polyhedron and human body clothing.

2. When using the reinforcements to attach the hangings and moving parts.

According to each of the embodiments of the present invention, it is possible to supply a radiation shield that matches the size of the radiation source, and since the reinforcing member can be integrally configured, it is possible to obtain stable strength and effect. Moreover, the shape of the radiation shield can be maintained, and a sufficient and stable radiation shield function can be maintained.

[0029]

EFFECTS OF THE INVENTION By using the method for reinforcing a radiation shield according to the present invention, it is possible to improve the usability and the shielding function retention from the viewpoint of actually working the conventional radiation shield, and to provide a more practical radiation shield. The effect that can be done can be produced.

[Brief description of drawings]

FIG. 1 is a front view of a radiation shield according to an embodiment of the present invention.

FIG. 2 is a right side view showing the right side surface of FIG. 1 in a partial sectional view.

FIG. 3 is a front view of a radiation shield according to another embodiment of the present invention.

FIG. 4 is a lower side view showing the lower surface of FIG. 3 in a partial cross-sectional view.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Radiation shield, 2 ... Tread surface, 3 ... Side wall part, 4 ... Side wall surface, 5 ... Water injection port, 6 ... Exhaust port, 8 ... Reinforcing wire, 9 ... Fixing cloth, 10 ... Adhesive agent, 11 ... Reinforcing plate .

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Reference number within the agency FI Technical indication location G21F 3/00 G21F 3/00 Z (72) Inventor Akira Mizuochi 3-2, Saiwaicho, Hitachi City, Ibaraki Prefecture No. 2 in Hitachi Engineering Service Co., Ltd. (72) Inventor Satoshi Omori 3-2-2, 3 Saiwaicho, Hitachi City, Ibaraki Within Hitachi Engineering Service Co., Ltd.

Claims (1)

[Claims] 1. A bag is formed in a desired shape and size using a synthetic resin cloth, a rubber plate or a composite thereof.
In a radiation shield that injects and holds a shielding liquid inside the bag to shield the radiation from the radiation source, a metal or non-metal wire or plate or both wire and board is used as a reinforcing material, and its reinforcement A method for reinforcing a radiation shield, wherein a material is integrally attached to the bag body inside or outside the bag body, or both inside and outside, with the reinforcing direction being a three-dimensional direction, to reinforce the bag body.