A Step-by-Step Guide to Evaluating the Credibility of Overpressure Scenarios Newsletter

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After reviewing their relief system design basis, an operating company discovered that it was inadequate for specific scenarios of concern:

• Loss of the cooling water pumps when only one reactor is operating
• Loss of the cooling water pumps when some or all of the reactors are operating
• Blocked reactor outlet

In this newsletter, Neil Prophet shows step-by-step how to determine the credibility of an overpressure scenario and the magnitude of an overpressure event using Process Safety Office® software. The Fault Tree Analysis (FTA) technique was chosen as the most efficient and effective method to assess the relief systems. To evaluate the overpressure scenarios, the maximum coincident pressure and temperature were modeled to ensure that the pressure of accumulation didn't reach certain specified limits.

Bonus!

This newsletter also includes access to a 60-minute AIChE webinar presented by Georges Melhem, Ph.D., FAIChE, on identifying best practices for assessing the failure potential of pressure and storage vessels exposed to external fire.

Have a great and safe day.

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