PT Journal AU Azevedo, CDR Baeza, A Chauveau, E Corbacho, JA Diaz, J Domange, J Marquet, C Martinez-Roig, M Piquemal, F Roldan, C Vasco, J Veloso, JFCA Yahlali, N TI Design, setup and routine operation of a water treatment system for the monitoring of low activities of tritium in water SO Nuclear Engineering and Technology JI Nucl. Eng. Technol. PY 2023 BP 2349 EP 2355 VL 55 IS 7 DI 10.1016/j.net.2023.03.037 LA English DE Monitoring radioactive discharges; Remote management; Tritium; Small size water treatment plant AB In the TRITIUM project, an on-site monitoring system is being developed to measure tritium (3H) levels in water near nuclear power plants. The quite low-energy betas emitted by 3H have a very short average path in water (5 mm as shown by simulations for 18 keV electrons). This path would be further reduced by impurities present in the water, resulting in a significant reduction of the detection efficiency. Therefore, one of the essential requirements of the project is the elimination of these impurities through a filtration process and the removal of salts in solution. This paper describes a water treatment system developed for the project that meets the following requirements: the water produced should be of nearpure water quality according to ISO 3696 grade 3 standard (conductivity < 10 mS/cm); the system should operate autonomously and be remotely monitored. ER