A system usable in a nuclear environment provides a reservoir of liquefied breathable gas in fluid communication with a deployment system. The deployment system uses a stream of the breathable gas from the reservoir to operate a gas turbine which runs an electrical generator that is mechanically connected therewith to generate electrical power that is stored in a battery bank. The stream of breathable gas then flows from the turbine and is split between a heat exchanger that is situated in heat exchange relation with the interior region of the main control room and an outlet that provides breathable gas to the control room. The portion of the stream that flows through the heat exchanger cools the main control room. The other portion of the stream that provides breathable gas to the main control room also recirculates the atmosphere in the control room.

A system usable in a nuclear environment provides a reservoir of liquefied breathable gas in fluid communication with a deployment system. The deployment system uses a stream of the breathable gas from the reservoir to operate a gas turbine which runs an electrical generator that is mechanically connected therewith to generate electrical power that is stored in a battery bank. The stream of breathable gas then flows from the turbine and is split between a heat exchanger that is situated in heat exchange relation with the interior region of the main control room and an outlet that provides breathable gas to the control room. The portion of the stream that flows through the heat exchanger cools the main control room. The other portion of the stream that provides breathable gas to the main control room also recirculates the atmosphere in the control room.

A fireproof ascending/descending mobile apparatus includes a fireproof-material enclosure carrier device, a fireproof-material support device, a drive device, an uninterruptible power system, and a position controller. The drive device drives the fireproof-material enclosure carrier device to move on the fireproof-material support device and is arranged in the fireproof-material enclosure carrier device. The uninterruptible power system is electrically connected with the drive device and is arranged in the fireproof-material enclosure carrier device. The position controller is connected with the drive device to control a position of the fireproof-material enclosure carrier device and is arranged in the fireproof-material enclosure carrier device.

A method of producing breathing air includes receiving intake air from an ambient air source, collecting the intake air in one or more collection pots of a distribution system, and distributing the intake air from the one or more collection pots to one or more breathing hoses. The method further includes continuously monitoring the intake air communicated to the one or more collection pots for one or more parameters and periodically recording readings of the continuous monitoring communicated wirelessly in the distributed system.

An air replenishing fume hood includes a cabinet, a door set, an air replenishing unit and air guiding unit. The cabinet has an inner casing defining an operating chamber and having an air inlet and an air outlet. A side of the cabinet includes an operation window. A first air passage is formed between the inner casing and the cabinet. The door set includes an outer door leaf adapted to open or close the operation window, and an inner door leaf adapted to open or close the air inlet. An end of the air replenishing unit extends into an external space via an outdoor tube, and another end of the air replenishing unit is connected to the first air passage via an extension tube. The air guiding unit includes an end connected to the air outlet, and another end extending into the external space or a collection tank.

An electro-ionic device configured for being worn on the face of a person is disclosed. The electro-ionic device includes at least two electrical conductors spaced apart from each other defining at least a portion of a respiratory pathway therebetween and a circuit configured to apply a first voltage between the two conductors during inspiration and a second voltage greater than the first voltage during expiration.

A packed bed for a heat exchanger may comprise a frame and a first fin layer disposed within the frame. A second fin layer may be disposed within the frame. A first perforated sheet may be disposed between the first fin layer and the second fin layer. A sorbent material may be disposed within a volume of at least one of the first fin layer or the second fin layer.

A method for monitoring generation of dust in a self-contained breathing apparatus involves performing a preliminary empirical compilation of databases related to an amount of dust that results from vibrations and/or mechanical impacts; determining a total empirical amplitude value; registering vibrations and/or mechanical impacts on a self-contained breathing apparatus under actual operating conditions; comparing a total breathing apparatus amplitude value with the total empirical amplitude value; generating a signal of inoperability when the dust content value exceeds a preset maximum allowable value. A monitoring device comprises a three-axis accelerometer and microcontroller configured to convert acceleration vectors into the total breathing apparatus amplitude value and compare this value the total empirical amplitude value. The device generates a signal of inoperability when the dust content value exceeds the preset maximum allowable value. The monitoring device may be part of a monitoring system comprising multiple breathing apparatuses and monitoring devices.

A method for monitoring generation of dust in a self-contained breathing apparatus involves performing a preliminary empirical compilation of databases related to an amount of dust that results from vibrations and/or mechanical impacts; determining a total empirical amplitude value; registering vibrations and/or mechanical impacts on a self-contained breathing apparatus under actual operating conditions; comparing a total breathing apparatus amplitude value with the total empirical amplitude value; generating a signal of inoperability when the dust content value exceeds a preset maximum allowable value. A monitoring device comprises a three-axis accelerometer and microcontroller configured to convert acceleration vectors into the total breathing apparatus amplitude value and compare this value the total empirical amplitude value. The device generates a signal of inoperability when the dust content value exceeds the preset maximum allowable value. The monitoring device may be part of a monitoring system comprising multiple breathing apparatuses and monitoring devices.

A near ceiling mounted NBC filtration system of collective protection shelters comprising a filter unit, a blower, and an air exchange backup unit [20] (FIG. 5). The air exchange backup unit [20] comprising: a plurality of hinged segments [22a, b, c] serially linked to each other to form a foldable arm. The hinged segments [22a, b, c] are configured for transmission of rotational motion between each other. At least one of the hinged segments comprises at least one stage of a first speed increasing transmission. A first end [24] of the air exchange backup unit is swiveably attached to an electric motor [42] driving a blower [40]. And a second end [26] of the air exchange backup unit carries a detachable hand crank [28]. Manual rotation of the hand crank [28] rotates a shaft of the electric motor [42] at substantially a rated speed of the electric motor. The second end [26] of the air exchange backup unit is firmly attachable to a wall of the protection shelter at a convenient position for manual cranking of the hand crank [28]. The air exchange backup unit [20] is selectively folded up at normal times.