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Rupture Discs: Effectively Minimize Leaks and Emissions

By Alan Wilson and Mike Quimby, Oseco |

When installing rupture discs, there are several mechanical and operational considerations for reducing the likelihood of leaks and fugitive emissions Overpressure relief systems consisting of rupture discs and relief valves are vital for preventing damage and injury within chemical processing plants and petroleum refineries. These systems experience leakage or fugitive-emission problems when installed, maintained or specified improperly. Consequences for such leakage issues may include plugging, corrosion, product loss and contamination. More serious consequences may also occur, including endangering employees and the public, fines or cleanup fees issued by regulatory agencies and lost production due to unplanned shutdowns. Rupture discs do a good job of minimizing leaks through the planned overpressure relief path. However, preventing leakage to the atmosphere between the rupture disc and holder requires proper device specification and correct installation. There is also a need for careful inspection, proper cleaning and regular maintenance of components. Understanding the various rupture disc technologies, assembly types and sealing mechanisms employed will help users prevent leakage and fugitive emissions in their plant’s overpressure…
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