Tritium Emission Reduction at Darlington Tritium Removal Facility Using a Bubbler System

摘要: Ontario Power Generation Nuclear (OPGN) has a 4 x 880 MWe CANDU nuclear station at its Darlington Div. located in Bowmanville. The operates Tritium Removal Facility (TRF) to reduce and maintain low tritium levels the Moderator Heat Transport heavy water systems of Ontario's fleet by extracting, concentrating, immobilizing storing as metal tritide. Minimizing releases environment is paramount importance ensure that dose public reasonably achievable (ALARA) credibility with Public. removed from Cryogenic Distillation System Immobilization (TIS) glove box via transfer line protected rupture disc relief valve. An overpressure event 2003 had caused blow, resulting release significant quantity elemental into valve discharge line, which ties contaminated exhaust system. As result few similar events occurring over number years TRF operation, released would have been converted oxide presence stagnant moist air stainless steel line.more » A amount hold-up was anticipated. To minimize any further environment, Bubbler designed remove recover line. This paper summarizes results several recovery runs were made period month. Approximately 3500 Ci 230 collected. contained produced system later safely recovered station's downgraded D{sub 2}O clean-up (authors)« less