EPJ Web Conf.
Volume 253, 2021ANIMMA 2021 – Advancements in Nuclear Instrumentation Measurement Methods and their Applications
|Number of page(s)
|Decommissioning, Dismantling and Remote Handling
|19 November 2021
An advanced blind-tube monitoring instrument to improve the characterization of subsurface radioactive plumes
Department of Engineering, Lancaster University, United Kingdom
2 Central Laboratory, National Nuclear Laboratory Ltd., United Kingdom
3 Radiometric Systems Group, Sellafield Ltd., United Kingdom
Published online: 19 November 2021
This research presents a design of a resilient blind-tube radiometric logging probe, which satisfies key, operational site constraints, for direct in-situ characterization of subsurface radioactivity, particularly caesium-137 and strontium-90. The probe comprises a commercially-available Ø10 mm × 9.5 mm CeBr3 scintillator detector attached to a compact digitizer unit, in a resistant and waterproof housing. The probe is designed to be lowered down into metallic Ø 75 mm blind-tubes by means of a winch system.
Key words: blind-tube logging / CeBr3 scintillator / gamma-ray spectroscopy / decommissioning
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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