Purdue University's PUR-1 stands alone as the nation's first fully digitally controlled and operated reactor.
Purdue University Reactor Number One is at the forefront of a nuclear energy revolution with its unique digital capabilities. This could lead to the development of a new generation of safer, more efficient, and more cost-effective nuclear reactor s, ultimately accelerating the transition to carbon-free electricity.
PUR-1 stands alone as the US’s first fully digitally controlled and operated reactor. This means its entire “nervous system,” the instrumentation and control system, relies on computer screens, keyboards, and ethernet cables.Using PUR-1, Purdue engineers and students have been conducting groundbreaking experiments, with their findings directly influencing the development of advanced reactors such as small modular reactors and microreactors.These smaller, more easily constructed reactors are designed to power a wider range of communities, including rural and remote areas, and will largely rely on digital communication for remote operation from centralized control centers.The digital leap also enables real-time data collection and the integration of artificial intelligence tools for continuous reactor performance monitoring. This proactive approach can enhance safety and extend reactor lifespans by better predicting and detecting problems between scheduled maintenance.Creation of digital twinNow, further bolstering Purdue’s leadership in this field, the lab of nuclear engineering assistant professor and associate PUR-1 director Stylianos Chatzidakis has completed a “digital twin” of PUR-1.This fully integrated physics and data-driven simulation, also funded by the Department of Energy, receives real-time data from PUR-1’s sensors, employs AI-driven algorithms for predictions, and offers insights that inform reactor operations.“We are the only university that has a digital twin of a true nuclear reactor that can utilize reactor-generated signals for research. That makes us unique,” Kim emphasized.A study published in Nature’s Scientific Reports by Chatzidakis and collaborators from Purdue and Argonne National Laboratory showcased the digital twin’s ability to test a machine learning algorithm designed to improve SMR performance.The algorithm accurately predicted changes in reactor power production with 99% accuracy, demonstrating its potential for real-world application.Remote operations with cost reductionThe ability to access PUR-1’s measurements remotely through the digital twin is crucial for exploring the feasibility of operating advanced reactors from distant locations.“Let’s say that you have a fleet of small modular reactors or microreactors operating in a remote location. If staff could be in a control room hundreds or thousands of miles away and monitor multiple reactors at once, we could minimize the operation and maintenance costs. Using PUR-1, we could quantify the potential reduction in costs,” Chatzidakis explained in a press release. “Using PUR-1, we could quantify the potential reduction in costs.”However, remote operation necessitates robust cybersecurity. In a technical letter report published by the US Nuclear Regulatory Commission, Chatzidakis and his team used real-time reactor data from PUR-1 to evaluate how AI and machine learning models could identify abnormal cybersecurity states within nuclear systems.The successful detection of such events in their research provides a valuable reference for the nuclear industry in developing AI for cybersecurity.Quantum encryption to secure reactorsThe lab is also investigating the cutting-edge application of quantum encryption to secure communications to and from reactors.“Encryption based on quantum principles cannot be broken with any computer. It doesn’t matter if you have a supercomputer or a quantum computer – it’s unbreakable,” Chatzidakis stated.Through simulations using PUR-1 data, the team has explored how quantum encryption could facilitate secure remote monitoring and operation of advanced reactors.Their next steps involve real-world experiments to test if quantum equipment can encrypt signals from PUR-1, accessed via its digital twin, further cementing Purdue’s role in powering the future of nuclear energy.“When people see the reactor for the first time, they’re in awe,” concluded PUR-1 supervisor True Miller. “A lot of people don’t really understand what nuclear means. On their visits, it’s a good time to explain to them what nuclear actually is and what are the truths and myths behind it.”
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