Tritium inventory in Li{sub 2}O breeder material for the SEAFP helium cooled ceramic blanket

Journal Article · Sun Oct 01 04:00:00 EDT 1995 · Fusion Technology

OSTI ID:196681

Colombini, A; Tosti, S; Violante, V; Simbolotti, G ^[1]

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1. Centro Ricerche di Frascati, Rome (Italy)

The analysis of the tritium inventory in Li{sub 2}O, carried out for the Safety and Environmental Assessment of Fusion Power (SEAFP) helium-cooled ceramic blanket, is based on a diffusion and desorption tritium release model. Within the specific range of breeder temperatures taken into account, desorption was the dominant mechanism so it can be defined as the rate controlling step. At steady state, the model for the tritium inventory in the solid Li{sub 2}O breeder is supported by a computer code for several operating conditions. At reference conditions of breeder temperatures, by varying the mean grain radius from 1 to 5 {mu}m, a tritium inventory from 0.5 to 2.8 g can be obtained. A helium purge gas velocity from 0.1 to 0.4 m/s gives rise to gas pressure losses from 0.22 to 0.9 MPa, which could probably be reduced by increasing the pebble diameter to 1 mm. This breeder configuration seems to ensure reactor safety. 9 refs., 5 figs.

• OSTI ID: 196681
• Report Number(s): CONF-950506--
• Journal Information: Fusion Technology, Journal Name: Fusion Technology Journal Issue: 3 pt 1 Vol. 28; ISSN 0748-1896; ISSN FUSTE8
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BREEDING BLANKETS
CERAMICS
COMPUTER CODES
DESIGN
GEOMETRY
HELIUM
INVENTORIES
LITHIUM OXIDES
PRESSURE DROP
REACTOR SAFETY
SAFETY
TRITIUM
USES