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Development of a real-time tritium-in-water monitor

dc.contributor.authorAZEVEDO, C.D.R.
dc.contributor.authorBAEZA, A.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorCHAUVEAU, E.
dc.contributor.authorCORBACHO, J.A.
dc.contributor.authorDÍAZ, J.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorDOMANGE, J.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorMARQUET, C.
dc.contributor.authorMARTÍNEZ-ROIG, M.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorPIQUEMAL, F.
dc.contributor.authorPRADO, D.
dc.contributor.authorVELOSO, J.F.C.A.
dc.contributor.authorYAHLALI, N.
dc.description.abstractEnIn this paper, we report the development and performance of a detector module envisaging a tritium-in-water real-time activity monitor. The monitor is based on modular detection units whose number can be chosen according to the required sensitivity. The full system must achieve a Minimum Detectable Activity (MDA) of 100 Bq/L of tritium-in-water activity which is the limit established by the E.U. Council Directive 2013/51/Euratom for water intended for human consumption. The first detector module was characterized, commissioned and installed immediately after the discharge channel of the Arrocampo dam (Almaraz nuclear power plant, Spain) on the Tagus river. Due to the high sensitivity of the single detection modules, the system requires radioactive background mitigation techniques through the use of active and passive shielding. We have extrapolated a MDA of 3.6 kBq/L for a single module being this value limited by the cosmic background. The obtained value for a single module is already compatible with a real-time pre-alert system for a nuclear power plant regarding tritium-in water environmental surveillance. Further optimization of the single-module sensitivity will imply the reduction of the number of modules and the cost of the detector system.
dc.language.isoen
dc.title.enDevelopment of a real-time tritium-in-water monitor
dc.typeDocument de travail - Pré-publication
dc.subject.halPhysique [physics]/Physique [physics]/Instrumentations et Détecteurs [physics.ins-det]
dc.identifier.arxiv2202.11068
hal.identifierhal-03596120
hal.version1
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03596120v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.au=AZEVEDO,%20C.D.R.&BAEZA,%20A.&CHAUVEAU,%20E.&CORBACHO,%20J.A.&D%C3%8DAZ,%20J.&rft.genre=preprint


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