A passive fire suppression system including at least one tapered cellular glass block and having a cap with a tapered shape disposed on the top of the at least one cellular glass block. The passive fire suppression system allows drainage from the upper surface to the bottom of the system. The drainage is beneficial for both environmental conditions such as rain as well as for incidents where combustible liquids are spilled on the top surface of the system. Therefore, the system will not only shield any combustible materials that are under the system but will also quickly drain any combustible liquids that may spill onto the top of the system to the lower surface.

A portable fuel container configured to prevent liquid fuel contained therein from being entirely emptied from the container. The amount of liquid fuel retained in the container can be sufficient to maintain a fuel-to-air ratio in the container at a fuel-rich level that prevents combustion within the container if the container were to be placed near an ignition source or if an ignition source were to somehow enter the container. The container can also include other safety features such as, for example, a flash suppressor located at the fill opening, an extra wide fill opening, and/or an easily controllable dispensing spout. When a flash suppressor is employed, the perforations in the flash suppressor can be configured to retain fuel therein after fuel has been dispensed from the container and the flash suppressor is no longer submerged in fuel.

A sparging evaporator for an inerting system including an outer vessel, an inner vessel within the outer vessel, and a plenum formed between the inner and outer vessels. The outer vessel includes a gas inlet for receiving inlet gas into the plenum, and a liquid inlet for receiving liquid fuel into the plenum. The inlet gas in the plenum generates a gas pressure that is exerted against a free surface of the liquid fuel in the plenum thereby forcing the liquid fuel and the inlet gas through an inlet of the inner vessel. The inner vessel contains a structure that promotes liberation of fuel vapor from the liquid fuel and enables the inlet gas in the liquid fuel to sparge the fuel vapor in the liquid fuel, thereby forming a fuel-enriched gas mixture that can be fed to a reactor of the inerting system.

Disclosed is a non-metallic anti-explosion ball, comprising an equatorial ring (1), longitudinal sheets (2), a south-polar ring (41) and a north-polar ring (31). The equatorial ring (1) and the longitudinal sheets (2) are arranged perpendicularly. The south-polar ring (41) and the north-polar ring (31) are located on two sides of the equatorial ring (1) respectively. The south-polar ring (41) is located at one end of the longitudinal sheets (2), and the north-polar ring (31) is located at the other end of the longitudinal sheets (2). The equatorial ring (1), the south-polar ring (41) and the north-polar ring (31) are coaxial. A projection of the south-polar ring (41) is located inside a projection of the equatorial ring (1) in an axial direction of the equatorial ring (1), and a projection of the north-polar ring (31) is positioned inside the projection of the south-polar ring (41). Projections of the longitudinal sheets (2) extend from the projection of the north-polar ring (31) to the equatorial ring (1). A manufacturing process for the non-metallic anti-explosion ball is simple, and the production efficiency is high.

A suppression system for use in a safety railcar may include a source of pressurized water connected to at least one foam tank containing a suppression foam. A controllable valve mediates flow of pressurized water from the source of pressurized water to the at least one foam tank. The controllable valve is controllable to permit flow of pressurized water to the at least one foam tank in response to detection of a hazardous event. A spray nozzle is connected to the foam tank via a rupture disc that is configured to rupture and permit flow of suppression foam from the spray nozzle when pressure within the foam tank exceeds a predetermined threshold.

A dome-based cyclic inert sealing system for an external floating roof tank includes the external floating roof tank, a dome structure, an inert sealing pipeline, and a gas source servo device; wherein the dome structure is formed by a top portion of a tank wall of the external floating roof tank for sealing; the dome structure together with an internal wall of the external floating roof tank, a floating plate and a sealing device form a gas phase space which is isolated from atmosphere, so as to fill the gas phase space with an inert sealing medium; the inert sealing medium is a gas fire-fighting medium used in a suffocation fire-fighting method; the gas source servo device is connected to the gas phase space through the inert sealing pipeline and communicates through a valve for feedback-controlling states of the inert sealing medium in the gas phase space.

Fuel tank inerting systems and methods for aircraft are provided. The systems include a fuel tank, a first reactant source fluidly connected to the fuel tank, the first source arranged to receive fuel from the fuel tank, a second reactant source, a catalytic reactor arranged to receive a first reactant from the first source and a second reactant from the second source to generate an inert gas that is supplied to the fuel tank to fill a ullage space of the fuel tank, and an inert gas recycling system located downstream of the catalytic reactor and upstream of the fuel tank, wherein the inert gas recycling system is arranged to direct a portion of the inert gas to the catalytic reactor.

Fuel tank inerting systems and methods for aircraft are provided. The systems include a fuel tank, a first reactant source fluidly connected to the fuel tank and arranged to receive fuel from the fuel tank, a second reactant source, a catalytic reactor arranged to receive a first and second reactants from the first and second sources, respectively, to generate an inert gas that is supplied to the fuel tank to fill a ullage space of the fuel tank, a heat exchanger arranged between the catalytic reactor and the fuel tank and downstream of the catalytic reactor, the heat exchanger arranged to at least one of condense and cool an output from the catalytic reactor to separate out an inert gas and a byproduct, and a cool air source arranged to supply cool air to the heat exchanger and then the catalytic reactor to provide thermal control of the catalytic reactor.

Fuel tank inerting systems and methods for aircraft are provided. The systems include a fuel tank, a first reactant source fluidly connected to the fuel tank, the first source arranged to receive fuel from the fuel tank, a second reactant source, a catalytic reactor arranged to receive a first reactant from the first source and a second reactant from the second source to generate an inert gas that is supplied to the fuel tank to fill a ullage space of the fuel tank, and wherein the first reactant is directly injected from the first reactant source without the use of a heater.

An air inert gas generating system consists of heat exchangers, a heating element, and a plurality of solid oxide electrochemical gas separator (SOEGS) cells. The SOEGS cells are interconnected in series to create a stack. A voltage is applied to the stack causing oxygen ions to be transported from the air flowing through the cathode through the electrolyte to the anode side of the SOEGS, resulting in oxygen-depleted gas. The oxygen-depleted gas can be used to inert the ullage of aircraft fuel tank or support the fire suppression system in the cargo hold. The oxygen-enriched gas can be used for other purposes.