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Rupture discs are safety devices used to protect pressurised systems and equipment from over pressure. Rupture discs are available in a wide range of sizes, materials and pressures and ensure an excellent level of system sealing helping to reduce the risk of fugitive emissions of toxic, dangerous or precious substances.
Rupture Discs for Protecting Plants from Overpressure
Introduction to rupture disc
Rupture discs are safety devices used to protect pressurised systems and equipment from over pressure and/or vacuum. They are devices that perform the same basic function as safety valves. The main difference however being that they intervene as a result of the differential pressure to which they are subjected but then they cannot be re-closed (in fact, they must be replaced once opened) (Figure 1).
Typically, rupture discs are devices composed of an assembly that also includes a special container called holder and, when necessary, other components such as: a vacuum or back pressure support, a reinforcement ring, a rupture detector, etc.
Rupture discs are pressure-tight devices designed to open by means of rupture at a pre-predetermined pressure value.
There are different types of rupture discs manufactured in corrosion resistant metals or in graphite. They can cover a wide range of sizes, rupture pressures and operating temperatures.
