ETHEL's systems and facilities for safe management of tritiated wastes
The European Tritium Handling Experimental Laboratory (ETHEL) is the new tritium facility of the CEC, aimed at handling multigram amounts of tritium for safety related R&D purposes. Due to the general operation of the laboratory as well as the maintenance of its experimental apparatus and containment systems, tritiated wastes in gaseous, liquid and solid forms will be generated. Gaseous streams such as ventilation atmospheres, whose tritium contamination levels need to be reduced before their recycle or release to the stack, will be processed through suitable gaseous detritiation units. The management of tritiated aqueous effluents, solid wastes and aqueous condensates will be performed in ETHEL using a Liquid Waste (LW) collection system and a Waste Conditioning Plant (WCP) respectively. The LW collection system handles only suspect or slightly tritiated effluents from controlled area drains and sumps. The WCP is designed to solidify tritiated aqueous condensates from gaseous detritiation systems, and also to condition and package solid and solidified liquid wastes from the various experimental and containment systems. The resulting drum packaged wastes will be sent to the Solid Waste Store (SWS) after being monitored for surface contamination and outgassing, using a specially adapted remotely operated crane and TV system. Due to the low ground level discharge limit awarded to ETHEL for tritium, the SWS ventilation atmosphere will be discharged through an 80 m stack. Tritium released into the SWS in the case of an eventual drum leakage will be detected by a real time non-discriminating monitor located in the extract duct of the SWS ventilation system.
Bibliographic Reference: Paper presented: 4th Topical Meeting on Tritium Technology, Albuquerque (US), Sept. 29 - Oct. 4, 1991
Availability: Available from (1) as Paper EN 36253 ORA
Record Number: 199111240 / Last updated on: 1994-12-02
Original language: en
Available languages: en