The control of tritium in ETHEL
The operation of the European Tritium Handling Experimental Laboratory (ETHEL) will require the implementation of means and procedures for allowing tritium control within the facility. For that purpose, account must be taken of the particular characteristics of tritium, such as its high mobility, capacity to dissolve in materials, and often limited precision when performing inventory measurements. This paper estimates the influence of these effects on the overall tritium balance in ETHEL. By employing available models for predicting tritium hold-up, it is estimated that three to four grams of tritium may potentially remain irreversibly fixed in various plant items of the standard laboratory infrastructure (exclusive of experimental circuits). On the other hand, the highest overall precision of inventory measurements that may be attained with the present plant is estimated to be of the order of a few per cent. On the basis of the above estimates, the allowable limits for the material unaccounted for (MUF) are discussed.
Bibliographic Reference: Paper presented: Technical Committee on Developments in Fusion Safety, Toronto (CA), June 7-11, 1993
Availability: Available from (1) as Paper EN 37582 ORA
Record Number: 199311310 / Last updated on: 1994-11-28
Original language: en
Available languages: en