| Issue |
EPJ Web Conf.
Volume 288, 2023
ANIMMA 2023 – Advancements in Nuclear Instrumentation Measurement Methods and their Applications
|
|
|---|---|---|
| Article Number | 07010 | |
| Number of page(s) | 5 | |
| Section | Decommissioning, Dismantling and Remote Handling | |
| DOI | https://doi.org/10.1051/epjconf/202328807010 | |
| Published online | 21 November 2023 | |
https://doi.org/10.1051/epjconf/202328807010
Neutron-gamma survey system for decommissioning and dismantling activities
1 Department of Physics and Astronomy “Galileo Galilei”, University of Padova, Italy
2 Department of Physics and Earth Science, University of Ferrara, Italy
3 CAEN S.p.A., Viareggio, Italy
4 INFNPadova Section, Padova, Italy
Published online: 21 November 2023
The nuclear plant decommissioning and dismantling (D&D) operations will amount to €200 billion in costs over decades around the world, with three-fourths coming from Europe. Decommissioning includes activities such as planning, physical and radiological characterization, facility and site decontamination, dismantling, and materials management. This work is focused on the development of a compact, light and low-power consumption neutron-gamma survey system which could be easily mounted on an remotely operated vehicle. It is made up of a 4”x4”x2” NaIL (NaI:Tl + 1% 6Li [95% enriched]) neutron/gamma scintillation detector coupled to a SiPM array. Digital pulse processing techniques were implemented to acquire and process the signals, by means of a CAEN DT5780 unit. A comprehensive characterization of this system, based on experiments and Monte Carlo simulations, is reported. The system can be used as a secondary inspection tool, useful for identifying radioactive and special nuclear materials in hotspots.
Key words: NaIL detector / D&D operations / radiation monitoring / neutron/gamma discrimination / hotspots
© The Authors, published by EDP Sciences, 2023
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