Rupture discs are commonly used in drilling applications for both pressure activation and pressure relief. If the pressure in the gas recovery system of a flare stack rises, the rupture disc will burst first, re-establishing the path to the flare, which is ignited to burn the waste gas.
Rupture discs, or bursting discs, help regulate the flow of separated liquids and relieve excess pressure in de-oilers when required. Rupture discs, or burst discs, act as pressure relief valve isolation or secondary pressure relief devices within shell and tube gas coolers and heat exchangers.
During the recovery of sulfur in modern refineries, high temperatures and pressures coupled with back pressures and potential pipe blockages can lead to catastrophic explosions. Rupture discs protect against overpressurization during the sulphur recovery process.