The invention relates to a pressure relief device and to a method for producing a pressure relief device, the pressure relief device (10) comprising a rupture disc (11) and a vacuum support (12, 32), the rupture disc and the vacuum support being made of graphite, the one-piece rupture disc having an exit side (13) and an entry side (14), the rupture disc having a recess (15) on the entry side, said recess (15, 33) forming a rupture area (17) within a retainer (16) of the rupture disc, the vacuum support being inserted in the recess, the pressure relief device having a carbon retaining device (30) for a form-fitted fastening of the vacuum support in the recess.

The invention relates to a pressure relief device and to a method for producing a pressure relief device, the pressure relief device (10) comprising a rupture disc (11) and a vacuum support (12, 32), the rupture disc and the vacuum support being made of graphite, the one-piece rupture disc having an exit side (13) and an entry side (14), the rupture disc having a recess (15) on the entry side, said recess (15, 33) forming a rupture area (17) within a retainer (16) of the rupture disc, the vacuum support being inserted in the recess, the pressure relief device having a carbon retaining device (30) for a form-fitted fastening of the vacuum support in the recess.

A device for detecting a sudden pressure variation in a fluid, including a housing open at one of its ends, a wall closing the housing to create a chamber, the wall being configured such that, when the external pressure outside the chamber is substantially stable or varies slowly, the internal pressure of the chamber is close to the external pressure, and the wall having mechanical characteristics such that it breaks when subjected to a predetermined difference between the external pressure and the internal pressure.

The invention relates to a pressure relief device and to a method for producing a pressure relief device, the pressure relief device (10) comprising a rupture disc (11) and a vacuum support (12, 32), the rupture disc and the vacuum support being made of graphite, the one-piece rupture disc having an exit side (13) and an entry side (14), the rupture disc having a recess (15) on the entry side, said recess (15, 33) forming a rupture area (17) within a retainer (16) of the rupture disc, the vacuum support being inserted in the recess, the pressure relief device having a carbon retaining device (30) for a form-fitted fastening of the vacuum support in the recess.

A device for detecting a sudden pressure variation in a fluid, including a housing open at one of its ends, a wall closing the housing to create a chamber, the wall being configured such that, when the external pressure outside the chamber is substantially stable or varies slowly, the internal pressure of the chamber is close to the external pressure, and the wall having mechanical characteristics such that it breaks when subjected to a predetermined difference between the external pressure and the internal pressure.

According to one aspect, a pressure relief valve assembly includes a clamped rupture disc. The rupture disc is adapted to rupture when a pressure differential across the pressure relief valve assembly reaches or exceeds a predetermined pressure differential. According to another aspect, there is provided a method of retrofitting a pressure relief valve assembly. According to yet another aspect, there is provided a method of assembling a pressure relief valve assembly.

A knuckle and support structure for a reverse buckling rupture disc is described.

A knuckle and support structure for a reverse buckling rupture disc is described.

An assembly for closure of an opening into a vessel, has a valve chamber, a valve biased toward a closed position in which the valve closes the first opening, and a retainer that retains the valve in an open position. A flow of cryogen from a first opening through the valve chamber to a second opening acts to displace the retainer and allow the valve to close.

An assembly for closure of an opening into a vessel, has a valve chamber, a valve biased toward a closed position in which the valve closes the first opening, and a retainer that retains the valve in an open position. A flow of cryogen from a first opening through the valve chamber to a second opening acts to displace the retainer and allow the valve to close.