The Loose Parts Detection System (LPDS) is an important safety feature a Rooppur Power Plant . It is designed to detect and monitor foreign or loose objects within the primary Coolant Circuit (PCC). These foreign or loose parts, whether left over from maintenance or resulting from operational wear and tear, pose significant risks to the integrity of main equipments. This paper explores a simulation-based approach to assess the reliability and operational effectiveness of the LPDS, focusing on its ability to detect potentially damaging loose items in real-time, thereby preventing mechanical failures and ensuring safe operation. Acoustic sensors in the LPDS track main components including the  vessel, coolant loops, steam generators, and coolant pumps continuously. Early on mechanical problems are detected by the system via vibrations and noises produced by free or loose components. We analyze the failure rates of important system components (like sensors and amplifiers) and the effect of system redundancies using simulations such that the LPDS can run even if many measurement channels fail.

The simulation results validate the system’s capability to detect objects as small as 0.05 kg and with impact energies as low as 0.68 J. These findings emphasize the role of LPDS in enhancing nuclear safety, reducing the risk of critical equipment damage, and supporting predictive maintenance by providing early warning of potential faults. This research shows how advanced simulations can improve safety systems. These simulations help ensure the long-term safety and reliability of Rooppur power plant.