TFTR D-T experience with tritium radioactivity during maintenance.
Topical meeting on tritium technology in fission, fusion, and isotopic applications. Belgirate ITA, 1995/05/28.
The Tokamak Fusion Test Reactor (TFTR) facility began operations with trace tritium in July 1993.
These operations consist of the delivery, storage, injection, and subsequent processing of tritium gas in support of the D-T fusion program.
The tritium is transferred throughout the facility using vacuum pumping systems and expansion volumes.
These systems have manipulated and processed 14.4 PBq (388,983 Ci) of tritium from July 1993 through December 1994.
This paper discusses the operational health physics program with regard to the performance of maintenance on tritium contaminated systems.
Data and findings are provided from maintenance situations ranging from work on small volume piping to large volume neutral beam systems.
Results and comparisons of tritium contamination levels, airborne radioactivity levels, and oil concentrations are presented for these systems.
Descriptions of the maintenance tasks are provided for the entire scope of work and include general information toward conceptual understanding of the maintenance conduct of operations.
A comparison is provided to process system monitoring, system moist air purges, system contamination levels and subsequent stack emission sampling for both elemental and oxide tritium.
A summary is provided to describe the relationship between elemental and oxide tritium as a result of properly planned and performed maintenance on tritium process systems.
Mots-clés Pascal : Tritium, Maintenance, Radiocontamination
Mots-clés Pascal anglais : Tritium, Maintenance, Radioactive contamination
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 96-0019518
Code Inist : 002A08F03. Création : 01/03/1996.