A storage tank for pressurized gas includes a liner defining an interior cavity for storing the pressurized gas. The storage tank further includes a nanoporous carbon shell formed from at least one pyrolyzed polymer. The liner is disposed at an inner side of the nanoporous carbon shell. The storage tank further includes a carbon fiber reinforced polymer layer disposed on an outer side of the nanoporous carbon shell opposite from the liner. The nanoporous carbon shell has an exposed surface at an exterior of the storage tank and is configured to permit gas permeated through the liner from the interior cavity to diffuse through the nanoporous carbon shell to the exposed surface.

A high pressure tank device includes a high pressure tank configured to supply/discharge a fluid through a supply/discharge channel, a first storage part, a leakage detection sensor provided in the first storage part for detecting leakage of the fluid, and a second storage part. The high pressure tank includes a resin liner, a reinforcement layer which covers an outer surface of the liner, and a cap having a supply/discharge hole. The first storage part can store a first fluid. The first fluid is at least one of the fluid that leaked from the supply/discharge channel and the fluid that leaked through the inside of the supply/discharge hole. The second storage part is provided independently from the first storage part, and can store a second fluid. The second fluid is the fluid that leaked from the outside of the supply/discharge hole.

In a high pressure gas container including a liner, a reinforcement layer, bosses (caps), and openings (vent holes), the reinforcement layer includes an inner side reinforcement layer that surrounds the liner, and an outer side reinforcement layer that surrounds the inner side reinforcement layer, gas guide passages that guide, to the openings (vent holes), a gas leaking from the liner are formed in the inner side reinforcement layer, and the gas guide passages are voids formed between sections of a reinforcing member by arranging alongside one another and stacking the sections of the reinforcing member along the liner.

A method of installing a trough or trench for containing a cryogenic spill, includes the step of constructing multiple precast concrete sections at a first location, each section having a bottom wall and spaced apart side walls connected to and extending up from the bottom wall. Each section has end portions that enable connection to another concrete section. The method includes (at the first location), preparing multiple panels of polymeric concrete material by filling one or more molds with a slurry or liquid polymeric concrete material and after time allowing the material to cure and harden. At the first location, one or more of the panels is adhered to the bottom wall and side walls of each concrete section using an adhesive. After adhering of the panels to the concrete sections, the concrete sections are transported from the first location to a second location that is remote from the first location. At the second location, the concrete sections are connected together using connections that join one end portion of a concrete section to and end portion of another concrete section. In one embodiment, the trough or trench is placed next to a pipe rack having cryogen containing flow lines. A slab and riser arrangement preferably channel any spill to the trough or trench.

A high pressure tank includes: a resin liner for containing a fluid; a reinforced layer covering an outer surface of the liner; a cap including a supply/discharge hole to supply and discharge the fluid to and from the liner; a barrier layer; and an isolation wall member. The cap includes a cylindrical protrusion having the supply/discharge hole. The barrier layer covers an outer surface of the reinforced layer to block all or at least part of the fluid, and includes an opening to expose the protrusion. The isolation wall member forms a closed space accommodating the protrusion and the opening of the barrier layer.

A fuel extraction system for extracting a gaseous fuel from a fuel tank. The fuel extraction system includes a conveying device which is configured to convey gaseous fuel and to bring it from a first pressure level to a second pressure level, a first line which is configured to connect the conveying device fluidically to the interior of the fuel tank, a buffer tank which is configured to store the fuel at the second pressure level, and which has a first outlet and a second outlet, at least one valve with a pneumatic actuating device, and a second line which is connected to the first outlet of the buffer tank and is configured to conduct a part of the fuel at the second pressure level to the pneumatic actuating device of the at least one valve. Furthermore, a fuel tank apparatus and a fuel cell system are described.

A high pressure tank apparatus includes a high pressure tank, a leaked fluid container, and a supply/discharge side discharge flow path. The high pressure tank includes a liner made of resin, a reinforced layer that covers an outer surface of the liner, an insertion member that has formed therein a supply/discharge hole capable of communicating with an inside of the liner and the supply/discharge flow path; and a supply/discharge side cap in which are formed an insertion hole through which the insertion member is inserted and a supply/discharge side draw-out hole that draws out the fluid interposed between the liner and the reinforced layer. The supply/discharge side discharge flow path guides a temporarily released fluid that is the fluid drawn out via the supply/discharge side draw-out hole to a discharge region.

A high pressure tank includes: a resin liner for containing a fluid; a reinforced layer covering an outer surface of the liner; a cap including a supply/discharge hole to supply and discharge the fluid to and from the liner; an isolation wall member; and a communication unit. The cap includes a cylindrical protrusion having the supply/discharge hole formed therein. An opening is formed in the reinforced layer to expose the protrusion. The isolation wall member encloses the protrusion and the opening, and forms a closed space. The communication unit communicates with the closed space.

A CNG storage tank system with secondary containment and monitoring, such that any leaks from a primary containment tank are initially contained within a secondary containment tank, detected by a CNG sensing system in communication with a monitoring station, such that leaked CNG in the form of methane can be safely and controllably vented to the atmosphere or into CNG capture tanks. In addition, a tank expansion detection system may be employed to detect excessive expansion of the primary containment tank.

The present disclosure relates to a pressure vessel equipped with a permeated gas discharging structure, the pressure vessel including a nozzle boss into and from which a gas flows and is discharged; a liner coupled to a flange portion of the nozzle boss and provided with a space formed therein for receiving fluid; a discharge path forming part configured to form a gas discharging path from the nozzle boss side along an outer surface of the liner in a central axial direction; and a composite material provided at outer sides of the liner and the discharge path forming part.