327results about "Shielded cells" patented technology

Embodiments of a ventilated storage system and method are provided for enabling space-efficient storage of casks containing hazardous nuclear materials. Each of a plurality of dry storage casks has a ventilated overpack with air inlets at or near the bottom and air outlets at or near the top so that ambient air flows into the air inlets, through the overpack, and out of the air outlets for venting and cooling the hazardous nuclear material. A storage pad on which the casks sit each have a plurality of air flow channels that provide air to the air inlets situated at the bottoms of the casks. The storage pad enables the casks to be placed closer together in a more space-efficient triangular array.

A portable small protective workstation for alpha nuclide operation comprises a protective cabin, a transparent window and glove holes are formed in the front side face of the protective cabin, radiation-resistant operating gloves are embedded in the glove holes in a sealed mode, a tray inlet is formed in the side face of the protective cabin, and a drawer type bracket is connected to the tray inlet in a sliding mode. The drawer type bracket comprises a tray layer, a cushion layer and a cover plate, the tray layer and the cushion layer are both vertically and fixedly connected to the side face of the cover plate, the tray layer is located above the cushion layer, a high-adsorbability radioactive water absorption pad is fixedly installed on the cushion layer, a plurality of through holes are formed in the bottom face of the tray layer, and the tray layer and the cushion layer are movably installed in the protection cabin body through a tray inlet. The cover plate abuts against the outer side face of the protection cabin in a sealed mode. An air filter box is arranged above the protective cabin body, and a filter layer is arranged in the air filter box. According to the utility model, the defects in the prior art are overcome, and the organic unification of radiation protection, pollution control and experiment convenience for operators is realized.

Disclosed is a calibrator device designed to measure the activity of a radio element, including: an ionization chamber, intended to receive the radio element; and electronic / computer system for controlling the operation of the calibrator device. The electronic / computer system includes voice control, which include: at least one microphone capable of capturing a voice instruction emitted by the operator; a recognition module designed to convert the voice instruction into a request that can be executed by the electronic / computer system; and a control module designed to control the execution of the request by the electronic / computer system.

The invention discloses a modular hot cell, and relates to the technical field of radiation experiments. The hot cell comprises: a base; a shielding body, wherein the shielding body is arranged on the base; the shielding body is arranged on the base, the shell is arranged on the base, and the shell is located in the shielding body; part of the passing assembly is arranged on the shielding body, and part of the passing assembly is arranged on the shell; a part of the observation assembly is arranged on the shielding body, and a part of the observation assembly is arranged on the shell. According to the modularized hot chamber, through the modularized splicing structure of the base, the shielding body and the shell, the construction efficiency of the hot chamber is remarkably improved, the nested design of the shielding body and the shell forms a multiple radiation protection barrier, and the radiation leakage amount is controlled to be at an extremely low level while the operation visibility of personnel is guaranteed. According to the invention, a user can inspect the damaged fuel element at the first time, and the efficiency and reliability of fuel element damage inspection and analysis are improved.

A gas-tight transfer device for transferring an object from a flexible container (80) containing the object (21) to a chamber, the device comprising: a chamber flange (2); a container flange (3) defining a transfer channel (30) connecting a feed end (31) and a discharge end (32) of the container flange (3); the container (80) comprises a wall (82) which extends at least partially into the transfer channel (30) and is in fluid-tight connection with the container flange (3) by clamping the wall (82) against a clamping surface fixed to the container flange (3) by means of a clamping force applied in a substantially axial direction.

The present invention belongs to the technical field of radioactive target decontamination, and particularly relates to a target contamination removal and sampling device for decontaminating and sampling a radioactive target (4) inside a glove box. The device includes a clamping mechanism and a wiping mechanism mounted on a rectangular system chassis (1). The clamping mechanism is used to fix the cylindrical target (4), and the wiping mechanism is used to wipe the target (4). In the decontamination and sampling operations of the target, the present invention reduces the finger tip dose and the whole body external irradiation dose of the operator, improves the decontamination effect, and simplifies the operation.

The invention provides a radiation shielding device and a neutron capture treatment system. The radiation shielding device comprises a shielding body, a base part and a driving device, the shielding body is movably arranged on the base part; the shielding body is provided with a first position and a second position, the first position is the position where the shielding body shields the beam outlet, and the second position is the position where at least part of the shielding body does not shield the beam outlet; the driving device is connected with the shielding body, and the shielding body can be switched between a first position and a second position through the driving device. According to the technical scheme, after a patient finishes irradiation and before a worker enters a treatment room to carry out a subsequent operation process, the position of the shielding body can be adjusted and controlled to shield the beam outlet, so that the patient and the worker are prevented from being radiated, activation of other equipment in the treatment room is avoided, and the treatment efficiency is improved. And the personal safety of patients and workers and the normal operation of equipment are ensured.

According to the ventilation system of the nuclear material production line and the nuclear material production line workshop, air exhaust equipment and air supply equipment in the system are used for conveying fresh air to a sealed area outside a target area, and the target area is the sealed area with the highest risk level; the air supply equipment is further used for extracting air from the adjacent sealing area with the risk grade lower than that of the target area and conveying the air into the target area so as to form directional airflow flowing from the low-risk area to the high-risk area. And the exhaust equipment is used for exhausting air in each sealing area. The control device is electrically connected with the air supply equipment and the air exhaust equipment and used for adjusting the air supply amount and the air exhaust amount of all the sealing areas so that the negative pressure gradient can be maintained among the multiple sealing areas, and the negative pressure in the target area is higher than the negative pressure in the adjacent sealing areas. The ventilation system can effectively avoid radioactive aerosol leakage in a high-risk area.

The invention relates to a door arrangement (1) for a door having a first closed space, the arrangement allowing a sealed connection between the first closed space and a second closed space, and comprising a flange (2) defining an opening plane and a passage axis (O) perpendicular to the opening plane, a door (4) pivotably mounted on the flange (2), and a chute (10) for a discharge assembly movable between a discharge position in which the chute is positioned opposite a passage opening and a position in which the chute is spaced apart from the passage opening, the chute being attached to the flange (2) by means of a first double-hinged connection mechanism (11) comprising a first hinge (12) arranged to allow rotational movement about an axis (C) parallel to the passage axis (O) of the passage opening, and a second hinge (13) arranged to allow rotational movement about an axis (D) perpendicular to the passage axis (O) of the passage opening.

The subject of the invention is a containment shell (1) comprising a wall (10) defining a space (12) made of a material of the concrete type and at least one observation module (30) comprising at least one window (33) arranged in an opening (32) of the wall (10), said window comprising a frame (36) in which is housed at least one optical block (34) providing protection against high-energy and / or neutron radiation, said frame fitting in the opening (32), the observation module further comprising a protection element (37) comprising a sash (38) carrying a glass (39) and arranged to close the opening at a surface inside the shell, said observation module thus comprising at least one interface (I) between two surfaces (S), characterized in that it further comprises at least one sealing system (40) arranged at the at least one interface (I).

This utility model discloses a partition device for handling nuclear waste in nuclear power plants, including a left sealing plate and a right sealing plate. The left and right sealing plates are respectively connected to a rotating shaft and then to a left connecting rod I and a right connecting rod I respectively via pins. The left and right connecting rods I are respectively connected to rocker arms A and B, which are linked to each other via left and right connecting rods II. The rocker arms are connected to a spindle, and the other end of the spindle is connected to a corner box. The driving gear of corner box A is connected to the spindle, and the driven gear is connected to a transmission shaft. The transmission shaft is connected to the driving gear of corner box B, and the driven gear of corner box B is connected to the drive shaft of a reduction gearbox. The upper and lower ends of the device are connected to pipes via fasteners. This utility model is suitable for the safe hoisting of irregularly shaped objects in nuclear facilities, and has the comprehensive advantages of precise angle adjustment, dynamic sealing protection, and optimized working space. Furthermore, all components are highly reliable, have a long service life, and possess characteristics such as shock resistance and radiation resistance.

The present disclosure relates to the field of radiation imaging for testing and / or quality assurance of items (6) in a variety of industrial applications. The radiation imaging system (1) for inspecting a plurality of items (6) comprises a radiation imaging device. a shielded enclosure (31), at least one access port (33). and at least one item handling apparatus (10) with a movable manipulator (4) configured for detachably coupling and releasing a plurality of mounts (5) suspended on a retaining element (36) arranged in the access port (33). and positioning the plurality items (6) mounted on the mounts (5) within a projection space (23) of the radiation imaging device.

The present disclosure relates to a system (1) for a sealed junction, comprising: a wall (2); a door (3); a locking device (5); and a safety device.

This invention provides a method for reinforcing existing underground shelters and existing underground structures using chemical grout injection, enabling their effective use as underground shelters. [Solution] The method for reinforcing an existing underground structure 11 according to the present invention is characterized by performing ground improvement using a chemical grout injection method on the ground 1 on the outer perimeter of the existing underground structure 11, thereby reducing the saturation of the ground 1 and making it unsaturated, and constructing a buffer body 12 on the outer perimeter of the existing underground structure 11, thereby attenuating energy acting from the outside. Furthermore, if the existing underground structure 11 is an existing underground shelter, a buffer body 12 made of reinforced ground can be formed on the outer perimeter of the underground shelter by chemical grout injection, thereby improving the durability, strength, and safety of the underground shelter against, for example, incoming ballistic missiles.

A ruggedizing apparatus for electronic equipment in a spacecraft is provided that can achieve both a radiation shielding effect and a heat-dissipation effect. The ruggedizing apparatus includes: a pressure vessel that is filled with a coolant and places at least a heat-generating electronic circuit of the electronic equipment within the pressure vessel, wherein the heat-generating electronic circuit is immersed in the coolant; and a forced liquid-flow generator placed within the pressure vessel, wherein the forced liquid-flow generator causes the coolant on the heat-generating electronic circuit to move away from the heat-generating electronic circuit.

An x-ray shield 230 for a semiconductor wafer x-ray inspection system, where the shield comprises, a frame 240 defining an internal area and an x-ray shielding material 250 which is supported within t

The present invention relates to a dry storage module and a system comprising the same, the dry storage module having an improved mounting manner of a gas outlet and a cylinder body in a dry storage module for spent nuclear fuel of a vertical light water reactor, the dry storage module comprising: a housing forming a hexahedron-shaped accommodation space; a plurality of storage parts which are arranged in two rows in the accommodation space, are used for storing spent nuclear fuel, and extend for a long distance respectively; a hexahedron-shaped module part for accommodating the storage part; the storage tank is filled with spent nuclear fuel; a cartridge body surrounding the tank; a cartridge holder for attaching / detaching the cartridge body to / from the module part; the air inlet is formed in the side of the upper part of the shell; the air outlet is formed in the lower part of the shell; and shield grids provided at the respective inflow port and outflow port.

A negative pressure centralized monitoring device for a radioactive control area of a nuclear power plant, comprising at least one measurement member (l), a buffer assembly(2), and a pipeline (3). The pipeline (3) comprises a main pipe(31) and at least one branch pipe (32), one end of each measurement member (l)is connected to a control area by means of a branch pipe (32), and the other end of each measurement member (l) is connected to the main pipe (31) by means of the branch pipe (32): the buffer assembly (2) is disposed on the main pipe(31); the measurement member (l) and the buffer assembly (2)are arranged in rooms, one end of the main pipe (31) is connected to the outside: the measurement member (l) is used for measuring the difference between the pressure of the control area and the pressure of the outside: and the buffer assembly (2) is used for filtering out the fluctuation of the external atmosphere. According to the device, the fluctuation of the external atmosphere can be filtered out, and the measurement member (l) is prevented from being affected by the disturbance from the external environment, so that the accuracy of the measurement member (l)is improved, and a ventilation and purification system can accurately adjust the air supply amount and the air intake amount. The stable operation of the ventilation and purification system is guaranteed, and the negative pressure in the control area is kept stable: and additionally, the number of holes punched in the outer wall of the control area can be reduced, thereby reducing the influence of punching holes in the outer wall on the sealing performance of the control area.

A radiographic inspection device and a method of inspecting an object are provided. The radiographic inspection device includes a support frame, where an inspection space applicable to inspect an object is formed within the support frame, and the inspection space has a first opening connecting to an outside; a transfer mechanism applicable to carry the object to move through the inspection space; a shielding curtain mounted at the first opening; and a driving mechanism mounted on the support frame and configured to drive the shielding curtain to move, so as to open or close the first opening. Since the driving mechanism drives the shielding curtain to rise or fall, it is possible to ensure that the lightweight object for inspection may smoothly enter the inspection space for subsequent radiographic scanning.

The utility model relates to the technical field of hot chamber prefilters, in particular to a hot chamber prefilter which comprises a filter device, fixing rings are fixedly connected to the upper end and the lower end of the filter device, grooves are formed in the upper ends of the fixing rings, and cleaning rods are slidably connected to the adjacent ends of the two fixing rings. A plurality of evenly-installed brushes are arranged at the end, close to the filtering device, of the cleaning rod, connecting blocks are fixedly connected to the upper end and the lower end of the cleaning rod, a connecting rod is fixedly connected to the upper end of the connecting block located at the upper end, and a pushing block is fixedly connected to the upper end of the connecting rod; through the arrangement of the connecting rod, the cleaning rod, the brush and the fixing rod, equipment capable of being pushed to clean filtered impurities is additionally arranged on the outer side of an original filtering device, so that people can conveniently clean and maintain the filtering device when using the filtering device, and daily use of people is more convenient; and the practicability of the equipment in use is improved.

To provide an air inlet device for a shelter capable of maintaining indoor air in a good condition over a long period and avoiding flooding inside the shelter caused by a tsunami.SOLUTION: An air inlet device 1 for a shelter comprises a plurality of outside air inlet valves 10, an open / close unit 20, and a filter unit 30. The outside air inlet valve 10 comprises an outside air inlet tube 11 and an open / close lid 15. Two outside air inlet tubes 11 are installed through a top plate 53. By operating the open / close unit 20, the open / close lids 15 move synchronously in a vertical direction D2 to open or close outside air inlet holes 11a. The filter unit 30 comprises a filter group 35 including a first filter 31 and a second filter 32, and a screen section S. By moving the screen section S, outside air 0A passing through the opening surface OP flows into a shelter interior 105 via the first filter 31 or the second filter 32.SELECTED DRAWING: Figure 1

The storage cabinet for the radiology department comprises a cabinet body, isolation fixing frames and an isolation cover plate, the two isolation fixing frames are fixedly installed in an inner cavity of the cabinet body, a plurality of circular grooves are evenly formed in the isolation fixing frames, and a plurality of second springs are evenly installed on the bottom faces of the circular grooves. The movable ends of the second springs are connected and provided with clamping supporting plates, a plurality of sets of guide sliding grooves are symmetrically formed in the inner wall of the cabinet body, guide sliding blocks are symmetrically and fixedly installed on the two sides of the three isolation cover plates, the guide sliding blocks are clamped and embedded in the guide sliding grooves, and a plurality of installation bases are evenly and fixedly installed on the bottom faces of the two isolation cover plates. And a plurality of first springs are uniformly mounted on the bottom surface of the mounting seat. The device has the advantages that a stored radioactive source lead tank can be conveniently clamped and fixed, the radioactive source lead tank is prevented from toppling over when being vibrated, when the radioactive source lead tank is taken out for use, the lead tank can be automatically ejected out of a part of an inner cavity of the circular groove, a user can conveniently take out the lead tank in a clamping mode, use is more convenient, and practicability is higher.

The invention relates to a transfer system (S1) for a sealed enclosure, the sealed enclosure defining a first enclosed volume and having at least one sealed connection device (D) for connecting to a second enclosed volume, the transfer system being intended to be disposed in the enclosure and to be fixed to a wall of the latter, the transfer system (S1) having a chute (14) and an articulation device (20) fixed inside the enclosure, the articulation device having two arms (22, 24) and three pivot hinges (26, 28, 30) and three motors.

The present invention relates to a radiation shield (1) for protecting an operator from ionizing radiation, the shield (1) comprising a front wall structure (2) made of one or more radiation-resistant materials and a side wall structure (3) made of one or more radiation-resistant materials, which are connected to each other at a vertical or substantially vertical corner edge (4), the shield (1) comprising a base (5) equipped with wheels (6) resting on the ground. Furthermore, according to the invention, the shield (1) is characterized in that the front wall structure (2) comprises a lower portion (21) and an upper portion (22) movable relative to each other, the upper portion (22) of the front wall structure (2) being mounted to pivot about a vertical or substantially vertical pivot (7) in the region of the corner edge (4).

The present disclosure relates to a connection port (1) for a tight transfer cell, this port comprising a flange (2) extending about a main axis (AX), this flange (2) comprising an outer face (7) and an inner face (8) which is equipped with a door (3) movable between an open position and a closed position wherein this door (3) seals a central opening (6) of the flange, and a slide (14) rigidly secured to the door (3) and passing through the flange (2), the slide (14) being connected to the flange (2) by a kinematic connection with a parallel axis (AX1) to the main axis (AX). The kinematic connection comprises a slide connection portion for applying a translational movement to the slide (14) along the axis (AX1) on a first displacement part, and a helical connection portion for applying a helical movement to the slide (14) about the axis (AX1) on a second displacement portion.

To install a leakage prevention device before a wall material is installed.SOLUTION: A leakage preventing device 10 prevents radiation leakage from an open hole 11h in a ceiling wall 11 by covering the open hole 11h from a rear side of the ceiling wall 11. The leakage preventing device 10 includes: a main body part 20 which is formed into a box shape with a closed bottom including a cylindrical peripheral wall 21 having an opening 25 sized to surround the open hole 11h at a tip 21a, and a bottom wall 22 facing the opening 25 and formed of a material preventing radiation leakage; and a fitting part 50 located on closer to the bottom wall 22 side than the tip 21a of the peripheral wall 21 and attached to a second long member 13b in which the ceiling wall 11 is fixed. The fitting part 50 can be attached to the second long material 13b with the tip 21a of the peripheral wall 21 in contact with a back side surface 11b.SELECTED DRAWING: Figure 5

The present disclosure, in an embodiment, is a facility that includes a device configured to generate a beam having an energy range of 5 MeV to 500 MeV, a first radiation shielding wall surrounding the device, a second radiation shielding wall surrounding the first radiation shielding wall, radiation shielding fill material positioned between the first radiation shielding wall and the second radiation shielding wall forming a first barrier. In embodiments, the radiation shielding fill material includes at least fifty percent by weight of an element having an atomic number from 12 to 83, and a thickness of the first barrier is 0.5 meter to 6 meters.

To provide a Tsar-class hydrogen bomb response evacuation system, temporary evacuation structures, a nuclear weapon attack deterrence defense system, and a Tsar-class hydrogen bomb assuming system that can mitigate damage, assuming a direct hit on Tokyo's 23 wards by a Tsar-class hydrogen bomb.SOLUTION: The system includes a preparedness ranking table and temporary evacuation structures 0 to 2 based on the ranking table. The preparedness ranking table is made up of a response readiness depending on the distance from the hypothetical hypocenter of a tsar hydrogen bomb, according to a rank corresponding to the expected time of a tsar hydrogen bomb fall and the expected degree of damage depending on the distance from the hypothetical hypocenter. Temporary evacuation structures 1 and 2, located more than 100 km from the hypothetical hypocenter of a tsar hydrogen bomb, are reinforced concrete buildings with a ceiling made of lead sheet 100 with a filter, and store daily necessities, at least one week's worth of limited water and food, and radiation-resistant protective clothing.SELECTED DRAWING: Figure 1

The utility model discloses a self-shielding neutron target device and a self-shielding neutron target system, the self-shielding neutron target device comprises a neutron target and a shielding housing, the neutron target comprises a target disc and a rotating part, the target disc is connected with the rotating part, the shielding housing is provided with a shielding chamber and a channel, the shielding chamber is used for packaging the target disc, and the rotating part passes through the channel. The shielding shell is further provided with a connecting end and an emitting end, the connecting end faces at least one part of the target disc, and the emitting end and the connecting end are located on the two opposite sides of the target disc. The shielding cavity can effectively package the target disc, generated neutrons and other radiation are limited in the shielding cavity, radiation leakage is avoided, the neutron target equipment is protected, operators can be prevented from being hurt by radiation, a channel for the rotating part to penetrate out is reserved in the shielding shell, and movement of the rotating part cannot be hindered while the sealing effect is achieved.