Abstract: Certain exemplary embodiments can provide a system that comprises a vessel in a nuclear fission system. The vessel defines a flanged access port. The system comprises a door assembly that is constructed to cover the flanged access port. The door assembly constructed to act as a radiation shield. The door is opened and closed via an actuating system.

Abstract: Certain exemplary embodiments can provide a system comprising a substantially transparent radiation shield, which comprises transparent ammonium metatungstate. The transparent ammonium metatungstate can have a density of greater than 1.5 gram/(cubic centimeter). The substantially transparent radiation shield can be installed on tanks and/or pressure vessels, used as a transparent radiation shield in medical shielding/devices, used as windows in glove boxes, and any application where effective radiation shielding is needed with transparency. The substantially transparent radiation shield can be used in one or more articles worn by a human.

Abstract: A high output, powered air purifying respirator that includes an anti-contamination suit, a filter for filtering particulates from the air, a high powered blower for delivering a cool flow of air to the body, and a stabilization mechanism. The stabilization mechanism is configurable in either head mounted or back mounted modules as desired by a worker. The head mounted configuration facilitates stream lined mobility and includes a head mounted suspension system with a circular rail and roller bearing halo around the worker's head for stabilizing the blower/filter and allowing for rotation of the worker's head inside the halo. The invention also includes additional modules, also configurable by the user, such as personal hydration and independent camera and dosimeter support.