Authors : A.L. Deghal Cheridi, A. Chaker and A. Loubar
Abstract: A steam boiler is a complex system comprised of numerous components. In the operation of industrial steam boiler, it is very important to evaluate different accident scenarios in actual plant conditions. One of the main accidents is steam generator tube rupture. Numerical simulation using best estimate computer codes like Relap5 are useful for understanding thermal-hydraulic behavior of a steam boiler during normal and accidental operating conditions. In this study, the analytical investigation of an industrial steam boiler behavior during feedwater line break accident is discussed. A detailed nodalization of the steam boiler installation is developed based on Relap5/Mod3.2 to be suitable for the analysis of the various accidents. The control and regulation systems are also considered. Water level, pressure, temperature and flow rates profiles are presented in various steam boiler system components. From the result, the thermal-hydraulic code correctly predicts the behavior of the main plant parameters in comparison with the experimental data and how the control system when required can successfully mitigate the accident.
A.L. Deghal Cheridi, A. Chaker and A. Loubar, 2012. Thermal-Hydraulic Simulation of a Radiant Steam Boiler Tube Rupture Transient Using Relap5/Mod3.2. Journal of Engineering and Applied Sciences, 7: 100-107.