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Evaluate Heat-Exchanger Tube-Rupture Scenarios Using Dynamic Simulation

By Chemical Engineering |

Applying dynamic simulation models to tube-rupture scenarios can help ensure more accurate sizing and hazard assessments Figure 1. Heat exchangers in many CPI applications can experience tube rupture, and these scenarios must be evaluated and addressed in order to ensure continued safe operations[/caption] Tube rupture in heat exchangers is an extremely serious issue in the chemical process industries (CPI; Figure 1). Heat-exchanger tube-rupture scenarios can be evaluated by various means, including dynamic and steady-state process simulation. Performance of reliable dynamic simulations of tube-rupture scenarios requires suitable experience, expertise and significantly higher effort than steady-state evaluations. This article discusses a number of heat-exchanger tube-rupture scenarios, including: the requirements for scenario evaluation; tube-rupture flow estimation; selection and sizing of relief devices and associated piping; and guidelines for identification of situations where a dynamic evaluation is appropriate. In addition, several dynamic-simulation case-study summaries are presented, illustrating the utility of this method in the proper selection and sizing of relief systems. Special emphasis is given to liquid-filled systems,…
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