A high pressure tank of a high pressure tank apparatus includes: a resin-made liner; a reinforced layer; a supplying/discharging hole to which a supplying/discharging flow path is connected via a connecting section; and a supplying/discharging-side lead-out hole that leads out a fluid interposing between the liner and the reinforced layer. A leaked fluid storage section is capable of storing a leaked fluid that has leaked from the connecting section. A supplying/discharging-side discharge flow path is provided independently from the leaked fluid storage section, and, when an opening/closing valve opens, discharges to the air a temporary release fluid that has been led out via the supplying/discharging-side lead-out hole. A control section, when it has judged, based on a detection result of a detecting unit, that there is a condition enabling the temporary release fluid to be discharged, opens the opening/closing valve.

A high-pressure tank includes: a liner made of resin and including a tubular body portion and a pair of dome-shaped side end portions provided in the opposite ends of the body portion; and a fiber reinforced resin layer made of a fiber reinforced resin and covering an outer peripheral surface of the liner. The fiber reinforced resin layer is formed by winding a fiber bundle impregnated with a resin, and an outer peripheral surface of the fiber reinforced resin layer is covered with a resin layer made of a resin. A part of the fiber reinforced resin layer includes a protrusion portion by continuously winding the fiber bundle in an overlapped manner along the circumferential direction of the body portion the part of the fiber reinforced resin layer covering the body portion.

An actuator for opening a hermetically sealed cylinder is disclosed herein. The actuator includes an actuation chamber configured to receive pressurized gas, the actuation chamber at least partially defined by a top wall and a bottom wall, a cutter body disposed within the actuation chamber between the top wall and the bottom wall, the cutter body including a top portion and a bottom portion, a cutting edge extending from the bottom portion of the cutter body, and a spring disposed between the top portion of the cutter body and the bottom wall of the actuation chamber.

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.

Pressure vessels having a grooved liner and methods of forming the same are described. The pressure vessel includes a liner surrounding a cavity therein, an outer surface of the liner disposed opposite the cavity, a boss disposed at a first end of the liner, a composite layer surrounding the liner, an inner surface of the composite layer disposed proximate the liner, and a plurality of longitudinal grooves configured to release gas present between the inner surface of the composite layer and the outer surface of the liner. The liner defines a longitudinal axis therethrough. The boss and the outer surface of the liner define the plurality of longitudinal grooves therein. The plurality of longitudinal grooves extends along the longitudinal axis from the boss toward a second end of the liner. The composite layer spans each of the plurality of longitudinal grooves.

A gas control system includes a high pressure tank, a temperature sensor, a pressure sensor, an injector, and a gas control ECU. The high pressure tank includes a liner, a reinforcing layer, and a discharge hole for discharging hydrogen gas from the liner. The temperature sensor detects the temperature of the reinforcing layer or the temperature around the outside of the high pressure tank. In the implementation of the gas control method, the gas control ECU, based on temperature information detected by the temperature sensor and pressure information detected by the pressure sensor, changes the timing of starting limiting control for limiting the discharge of hydrogen gas.

The invention relates to a protective valve ring (1) for an oxygen gas cylinder (3). The protective valve ring (1) comprises a body (4) adapted to enclose an outlet (5) of a cylinder valve (2). The body (2) comprises an incombustible and heat absorbing material, and has an internal shaping adapted to guide any potential oxygen gas leak away from inflammable parts of the gas cylinder (3). The invention also relates to a shut-off valve (2) for controlling flow of a pressurised gas and a method for attaching a protective valve ring (1) to a shut-off valve (2) of an oxygen gas cylinder (3).

A high-pressure tank includes: a cylindrical hollow container; an outer shell that is formed of a fiber-reinforced plastic band which is wound on an outer circumference of the hollow container to cover the outer circumference; and a cap that is attached to an inner side of at least one of one axial end and the other axial end of the outer shell. The hollow container is formed of a material which has airtightness and which is able to expand and contract in an axial direction and a radial direction inside the outer shell, and a frictional portion that is used to set a frictional resistance to an inner circumferential surface of the outer shell to be greater than that in the other area is provided in an axial intermediate portion on an outer circumferential surface of the hollow container.

A high pressure tank includes: a liner made of a resin; a reinforced layer covering an outer surface of the liner; and a cap having formed therein a supplying/discharging hole for supplying/discharging a fluid to/from the liner. This cap includes: a flange section interposing between the liner and the reinforced layer; and an exposed section exposed from the reinforced layer. Furthermore, in this high pressure tank, a protective member is arranged between the flange section and the reinforced layer.

An actuator for opening a hermetically sealed cylinder is disclosed herein. The actuator includes an actuation chamber configured to receive pressurized gas, the actuation chamber at least partially defined by a top wall and a bottom wall, a cutter body disposed within the actuation chamber between the top wall and the bottom wall, the cutter body including a top portion and a bottom portion, a cutting edge extending from the bottom portion of the cutter body, and a spring disposed between the top portion of the cutter body and the bottom wall of the actuation chamber.