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Environmental, Health & Safety :: Plant & Personnel Safety :: Process Safety Management

November 1, 2008

Feature Report: Pressure-Relief System Design

Unexpected high-pressure situations can be relieved with a proper relief-system design

Unexpected high-pressure situations can be relieved with a proper relief-system design

Siddhartha Mukherjee Lurgi India Company Ltd.

Pressure relief systems are vital in the chemical process industries (CPI) for handling a wide variety of situations. They are used to prevent pressurization above a system’s design pressure; for venting during an unusual or emergency situation; and for normal depressurization during a shutdown, as examples. In some cases, such as when non-combustible gases including steam, air and nitrogen are used, venting into the atmosphere may be an option. In other cases, such as those typically encountered in the hydrocarbon sector, elaborate systems for the disposal of vented gases may be required.

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