A neutron absorber apparatus for use in restoring reactivity control to a nuclear fuel rack. The apparatus comprises an elongated tubular insert assembly configured for insertion in a storage cell of the rack. First and second absorber plates, each formed of a boron-containing material, are coupled together by upper and lower stiffening bands at the insert extremities and form a longitudinally-extending cavity configured for receiving a fuel assembly. The absorber plates and stiffening bands may have a rectilinear cross sectional configuration in one embodiment. At least one elastically deformable locking protrusion mounted proximate to the lower end of the absorber plates lockingly engages an available lower edge disposed in the cell sidewall above its bottom end. This fixes the tubular insert axially in the cell, thereby preventing its withdrawal after installing the insert. In one embodiment, the edge may be the bottom of existing absorber sheathing in the cell.

A radiation-shielding attenuation structure and method of forming the attenuation structure, wherein the attenuation structure is made by additively manufacturing a concrete material that includes one or more attenuation dopants configured to enhance the radiation shielding of the concrete material. The one or more attenuation dopants may be configured in the concrete material to attenuate one or more types of radiation, such as electromagnetic radiation, gamma radiation, X-ray radiation, or neutron radiation. The attenuation structure formed by the concrete material may be additively manufactured on-site according to a model that has already been pre-certified for safe or secure use, thereby providing a repeatable and reproducible process that can reduce lead times and fabrication costs. The attenuation structure may be easily modified during the additive manufacturing process to have different concrete mixtures with different attenuation characteristics, which increases the tailorability and flexibility in design of the attenuation structure.

A remote control protector for anti-light interference includes a body and a shelter. The body includes a housing space, a first surface, and a second surface. The housing space is for disposing a remote control. The first surface includes a first opening communicating with the housing space. The second surface includes a second opening communicating with the housing space and the second opening is adapted to expose a transceiver of the remote control. The shelter extends from the second surface of the body along an axial direction of the body, surrounds the second surface, and has an outlet opening communicating with the second opening of the second surface.

A remote control protector for anti-light interference includes a body and a shelter. The body includes a housing space, a first surface, and a second surface. The housing space is for disposing a remote control. The first surface includes a first opening communicating with the housing space. The second surface includes a second opening communicating with the housing space and the second opening is adapted to expose a transceiver of the remote control. The shelter extends from the second surface of the body along an axial direction of the body, surrounds the second surface, and has an outlet opening communicating with the second opening of the second surface.

A radiation barrier provides adjustable protection against radiation incident from multiple directions simultaneously. First and second radiation shields are pivotally retained by an axis post to form a radiation shield assembly. Each radiation shield is formed from radiation shielding material with a lead equivalence. The radiation shields have a closed configuration where the shields are disposed in a nesting relationship to a single side of the axis post with the first radiation shield disposed interior to the second radiation shield. The first radiation shield pivots in a plane laterally displaced from the center axis of the axis post by a distance D.sub.1 while the second radiation shield pivots in a plane laterally displaced from the center axis by a greater distance D.sub.2. Notches can be disposed in the proximal end portion of the first radiation shield to permit mounting brackets of the second radiation shield to be received therethrough.

A radiation barrier provides adjustable protection against radiation incident from multiple directions simultaneously. First and second radiation shields are pivotally retained by an axis post to form a radiation shield assembly. Each radiation shield is formed from radiation shielding material with a lead equivalence. The radiation shields have a closed configuration where the shields are disposed in a nesting relationship to a single side of the axis post with the first radiation shield disposed interior to the second radiation shield. The first radiation shield pivots in a plane laterally displaced from the center axis of the axis post by a distance D.sub.1 while the second radiation shield pivots in a plane laterally displaced from the center axis by a greater distance D.sub.2. Notches can be disposed in the proximal end portion of the first radiation shield to permit mounting brackets of the second radiation shield to be received therethrough.

Apparatuses (devices, systems) and methods for shielding (protecting) surroundings around periphery of regions of interest located inside objects (e.g., patients) from radiation emitted by X-ray systems towards the objects. Apparatus includes: at least one radiation shield assembly including a support base connectable to an X-ray system radiation source or detector, and a plurality of radiation shield segments sequentially positioned relative to the support base, thereby forming a contiguous radiopaque screen configured for spanning around the region of interest periphery with a radiopaque screen edge opposing the object. Radiation shield segments are individually, actively controllable to extend or contract to selected lengths with respective free ends in directions away from or towards the support base(s), for locally changing contour of the radiopaque screen edge. Applicable for shielding (protecting) medical personnel, and patients, from exposure to X-ray radiation during medical interventions or/and diagnostics.

Apparatuses (devices, systems) and methods for shielding (protecting) surroundings around periphery of regions of interest located inside objects (e.g., patients) from radiation emitted by X-ray systems towards the objects. Apparatus includes: at least one radiation shield assembly including a support base connectable to an X-ray system radiation source or detector, and a plurality of radiation shield segments sequentially positioned relative to the support base, thereby forming a contiguous radiopaque screen configured for spanning around the region of interest periphery with a radiopaque screen edge opposing the object. Radiation shield segments are individually, actively controllable to extend or contract to selected lengths with respective free ends in directions away from or towards the support base(s), for locally changing contour of the radiopaque screen edge. Applicable for shielding (protecting) medical personnel, and patients, from exposure to X-ray radiation during medical interventions or/and diagnostics.

[Object] To provide a radiation shielding material that includes a resin composition obtained by filling a matrix formed of resin with a radiation-absorbing substance and is capable of obtaining a structure in which transparency is significantly improved as compared with the conventional radiation shielding material while having a radiation shielding effect similar to that of the conventional radiation shielding material.

[Solving Means] A radiation shielding material includes: a resin composition containing a proportion of 20 to 80 vol % of fluoride powder containing barium as a constituent element. The fluoride powder is favorably barium fluoride or lithium barium fluoride, the resin favorably has a refractive index (n) of 1.4 to 1.6, and particularly, a difference between a refractive index of the resin and a refractive index of the fluoride powder is favorably within ±0.05.

A system of shields designed to provide substantially greater protection, head to toe, against radiation exposure to health care workers in a hospital room during procedures which require real-time imaging. The shields are placed around the patient and the x-ray table and provide protection even when the x-ray tube is moved to various angles around the patient.