Tritium-in-air Monitoring System - Detritiation plant power consumption optimization

Tritium in air monitoring from working areas of a detritiation plant is part of working environment radiological monitoring, demanded by Romanian Fundamental Norms of Radiological Security (NSR-01) and is referring to tritium in air activity concentration measurement in the working space of an installation where the possibility of air contamination with tritium exist due to the tritium technological dispersion occurring in normal or failure functioning of the plant. Depending on installation specificity, when technological dispersions are under form of tritiated water vapors (HTO, DTO), for vapors recuperation local small dimensions cleanup systems are preferred. When the technological dispersions are under tritium or tritiated hydrogen/deuterium form (HT, DT, T-2) owing to the recuperation process usually made by burning the gas to produce water and subsequent recovery, the system is more complicated and expensive. That's why, the designer engineers prefer to execute outsized capacity systems capable to serve potential dispersion areas. This paper aim to present a technical solution for a stable area monitoring system of tritium in air for working spaces in a heavy water detritiation plant, where hydrogen gas is used, system who generate and optimize the control signals of recuperation installation depending on the tritium in air concentration level.