Lightweight, glidable shielded components (e.g. doors) may be used in conjunction with accredited enclosures to provide electromagnetic, acoustic and CBR protection.

A door assembly for an electromagnetic shielded enclosure includes a metal door frame for defining a passageway into the enclosure and a door for selectively enclosing the passageway. The door includes a door leaf pivotally coupled to the frame. A set of radio frequency (RF) seals is connected to the exposed peripheral edge of a conductive plate in the door leaf. Each RF seal includes a resilient movable finger which overlies a U-shaped bracket mounted along the outer edge of the door leaf. A plurality of air cylinders is mounted within each bracket and is designed to urge the resilient finger of each RF seal into contact with the door frame.

A radio frequency shielding door system comprising a door, a frame, and a plurality of sealing mechanisms. The door is situated within and perimetrically surrounded by the frame with the plurality of sealing mechanisms arranged between the door and the frame. The plurality of sealing mechanisms further comprise a first U-channel, a second U-channel, and an inflatable seal. The second U-channel is slidingly engaged with the first U-channel and the inflatable seal is arranged between the first U-channel and the second U-channel. When activated, the second U-channel slides relative to the first U-channel, filling the space between the door and the frame while the inflatable seal provides additional sealing between the first and second U-channels.

A radio frequency shielding door system comprising a door, a frame, and a plurality of sealing mechanisms. The door is situated within and perimetrically surrounded by the frame with the plurality of sealing mechanisms arranged between the door and the frame. The plurality of sealing mechanisms further comprise a first U-channel, a second U-channel, and an inflatable seal. The second U-channel is slidingly engaged with the first U-channel and the inflatable seal is arranged between the first U-channel and the second U-channel. When activated, the second U-channel slides relative to the first U-channel, filling the space between the door and the frame while the inflatable seal provides additional sealing between the first and second U-channels.

The electromagnetic shielding of an enclosable building structure is provided by applying a shielding wallcovering to at least a portion of building structure. The shielding wall covering is wallpaper comprising a metal-coated substrate core and resin. To connect the shielded wallpaper to the building structure a layer of the resin or an adhesive layer may be used.

The electromagnetic shielding of an enclosable building structure is provided by applying a shielding wallcovering to at least a portion of building structure. The shielding wall covering is wallpaper comprising a metal-coated substrate core and resin. To connect the shielded wallpaper to the building structure a layer of the resin or an adhesive layer may be used.

A modular safety shelter provides protection from fragment, overpressure, radiation, and toxic hazards through a combination of physical design of modular segments, of joint seals between modular segments, of door assemblies, and of HVAC control systems. The modular shelter is formed of two or more prefabricated concrete modular segments each including a built-in foundation, roof, and side walls, and a prefabricated concrete vestibule segment providing an airlock-like access to the shelter. The prefabricated modular segments and vestibule segment are transported to a site and assembled to each other on-site to provide a fully enclosed space within the modular shelter. A multi-layer joint seal is formed between adjacent modular segments to prevent ingress of toxic, flammable, or thermal hazards. An integrated HVAC controller monitors toxic or flammable hazards outside and inside of the shelter, and controls HVAC systems to minimize spread of contaminants upon detecting a hazard.

A modular safety shelter provides protection from fragment, overpressure, radiation, and toxic hazards through a combination of physical design of modular segments, of joint seals between modular segments, of door assemblies, and of HVAC control systems. The modular shelter is formed of two or more prefabricated concrete modular segments each including a built-in foundation, roof, and side walls, and a prefabricated concrete vestibule segment providing an airlock-like access to the shelter. The prefabricated modular segments and vestibule segment are transported to a site and assembled to each other on-site to provide a fully enclosed space within the modular shelter. A multi-layer joint seal is formed between adjacent modular segments to prevent ingress of toxic, flammable, or thermal hazards. An integrated HVAC controller monitors toxic or flammable hazards outside and inside of the shelter, and controls HVAC systems to minimize spread of contaminants upon detecting a hazard.

A door assembly for an electromagnetic shielded enclosure includes a metal door frame for defining a passageway into the enclosure and a door for selectively enclosing the passageway. The door includes a door leaf pivotally coupled to the frame. A set of radio frequency (RF) seals is connected to the exposed peripheral edge of a conductive plate in the door leaf. Each RF seal includes a resilient movable finger which overlies a U-shaped bracket mounted along the outer edge of the door leaf. A plurality of air cylinders is mounted within each bracket and is designed to urge the resilient finger of each RF seal into contact with the door frame. By integrating the RF seal and its related mechanical components into the door, the passageway into the enclosure is rendered less obtrusive. Additionally, the use of multiple air cylinders to actuate each RF seal creates operational redundancy.

A modular safety shelter provides protection from fragment, overpressure, radiation, and toxic hazards through a combination of physical design of modular segments, of joint seals between modular segments, of door assemblies, and of HVAC control systems. The modular shelter is formed of two or more prefabricated concrete modular segments each including a built-in foundation, roof, and side walls, and a prefabricated concrete vestibule segment providing an airlock-like access to the shelter. The prefabricated modular segments and vestibule segment are transported to a site and assembled to each other on-site to provide a fully enclosed space within the modular shelter. A multi-layer joint seal is formed between adjacent modular segments to prevent ingress of toxic, flammable, or thermal hazards. An integrated HVAC controller monitors toxic or flammable hazards outside and inside of the shelter, and controls HVAC systems to minimize spread of contaminants upon detecting a hazard.