Author:
Pakari Oskari,Mager Tom,Frajtag Pavel,Pautz Andreas,Lamirand Vincent
Abstract
AbstractAutonomous nuclear reactor monitoring is a key aspect of the International Atomic Energy Agency’s strategy to ensure nonproliferation treaty compliance. From the rise of small modular reactor technology, decentralized nuclear reactor fleets may strain the capacities of such monitoring and requires new approaches. We demonstrate the superior capabilities of a gamma detection system to monitor the criticality of a zero power nuclear reactor from beyond typical vessel boundaries, offering a powerful alternative to neutron-based systems by providing direct information on fission chain propagation. Using the case example of the research reactor CROCUS, we demonstrate how two bismuth germanate scintillators placed outside the reactor vessel can precisely observe reactor criticality using so called noise methods and provide core status information in seconds. Our results indicate a wide range of applications due to the newly gained geometric flexibility that could find use in fields beyond nuclear safety.
Publisher
Springer Science and Business Media LLC
Reference58 articles.
1. Pörtner, H.-O. et al. IPCC: Climate Change 2022: Impacts, Adaptation, and Vulnerability. Contribution of Working Group II to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change (Cambridge University Press, 2022).
2. Ming, A. et al. Key messages from the IPCC AR6 climate science report. Cambridge Open Engagehttps://doi.org/10.33774/coe-2021-fj53b (2021).
3. Kober, T., Schiffer, H.-W., Densing, M. & Panos, E. Global energy perspectives to 2060 - WEC’s world energy scenarios 2019. Energy Strat. Rev. 31, 100523. https://doi.org/10.1016/j.esr.2020.100523 (2020).
4. Anzelon, G. Antineutrino reactor monitoring in the context of IAEA safeguards. Workshop on Applied Antineutrino Physics (AAP 2018).
5. IAEA Department of Safeguards. Long-term R &D plan, 2012–2023, STR-375 (Tech. Rep IAEA, 2013).