The Water Detritiation System of the ITER Tritium Plant

The water detritiation system (WDS) of tritium plant for the International Thermonuclear Experimental Reactor (ITER) was designed. The concept of the Combined Electrolysis Catalytic Exchange (CECE) process was selected for the WDS. The design conditions are (a) tritium concentration of waste water:...

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Bibliographic Details
Published in:Fusion science and technology 2002-05, Vol.41 (3P2), p.1126-1130
Main Authors: Iwai, Y., Misaki, Y., Hayashi, T., Yamanishi, T., Konishi, S., Nishi, M., Ninomiya, R., Yanagimachi, S., Senrui, S., Yoshida, H.
Format: Article
Language:English
Subjects:
Catalysis
Correlation methods
Current density
Electrolysis
Experimental reactors
Heavy water
Palladium
Tritium
Wastewater
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Summary:The water detritiation system (WDS) of tritium plant for the International Thermonuclear Experimental Reactor (ITER) was designed. The concept of the Combined Electrolysis Catalytic Exchange (CECE) process was selected for the WDS. The design conditions are (a) tritium concentration of waste water: 3.7 × 10 10 ∼3.7 × 10 11 Bq/kg, (b) waste water flow rate: 20 kg/h (1100 mol/h), a net working rate: 300 days, annual capacity: 150 tons/year (c) tritium concentration in the H 2 discharged to environment: 6.5 x 10 1 Bq/m 3 , (d) tritium concentration in the H 2 O vapor discharged to environment: 3.7 x 10 3 Bq/m 3 , (e) tritium concentration in the electrolyzer: ∼ 1.85 × 10 13 Bq/kg. Tritium concentration in the electrolyzer is determined considering the lifetime of the electrolyzer which depends on tritium concentration. Design value of height of a unit (30cm) of water-hydrogen isotopic exchange column and the correlation between the column internal flow rates and the column diameter were determined based on similar system for Japanese advanced thermal reactor (Fugen) moderated with heavy water.
ISSN:1536-1055
1943-7641
DOI:10.13182/FST02-A22759