Evaluating Reactivity Control Options for a Chloride Salt-Based Molten Salt Zero-Power Reactor

Merk, Bruno, Detkina, Anna, Atkinson, Seddon, Litskevich, Dzianis ORCID: 0000-0002-3207-3058 and Cartland-Glover, Gregory
(2021) Evaluating Reactivity Control Options for a Chloride Salt-Based Molten Salt Zero-Power Reactor. APPLIED SCIENCES-BASEL, 11 (16). p. 7447.

Access the full-text of this item by clicking on the Open Access link.


<jats:p>Molten salt reactors have gained substantial interest in recent years due to their flexibility and their potential for simplified closed fuel cycle operation for massive net-zero energy production. However, a zero-power reactor experiment will be an essential first step in the process of delivering this technology. The topic of the control and shutdown for a zero-power reactor is, for the first time, introduced through a literature review and a reduction in the control approaches to a limited number of basic functions with different variations. In the following, the requirements for the control and shutdown systems for a reactor experiment are formulated, and based on these assessments, an approach for the shutdown, i.e., splitting the lower part of the core with a reflector, and an approach for the control, i.e., a vertically movable radial reflector, are proposed. Both systems will be usable for a zero-power system with a liquid as well as a solid core, and even more importantly, both systems somehow work at the integral system level without disturbing the central part of the core which will be the essential area for the experimental measurements. Both approaches were investigated as a singular system, in addition to their interactions with one another and the sensitivity of the control system. This study demonstrates that both proposed systems are able to deliver the required characteristics with a sufficient shutdown margin and a sufficiently wide control span. The interaction of the system is shown to be manageable, and the sensitivity is at a very good level. The multi-group Monte Carlo approach was cross-evaluated by a continuous energy test, leading to good results, but they also demonstrate that there is room for improvement.</jats:p>

Item Type: Article
Uncontrolled Keywords: nuclear, nuclear reactors, reactor physics, nuclear experiments, zero-power reactors, modeling and simulation, molten salt reactors
Divisions: Faculty of Science and Engineering > School of Engineering
Depositing User: Symplectic Admin
Date Deposited: 06 Sep 2021 07:29
Last Modified: 15 Mar 2024 05:53
DOI: 10.3390/app11167447
Open Access URL: https://doi.org/10.3390/app11167447
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3136050