MODEL JC237
Description:
Boro-silicone is a fire resistant, heat resistant, self-extinguishing elastomer which is available for field casting or pre-cast to specification. It is hydrogen rich (67% of that in water) and will withstand temperatures of up to 205ºC for long periods while retaining most shielding properties. It has 1% added boron to give enhanced thermal neutron capture and the suppression of capture gammas.
Boro-silicone is available in a variety of shapes and sizes. JCS have often provided large pre-cast shapes to drawing specified by our clientile. The material has also been used in the manufacture of large fuel transportation and as reactor cavity shield plugs where the customer cast 9,000 pounds of the material, on-site for use as a sacrificial shield. Another customer cast 82,000 pounds of Boro-silicone into shipping containers for spent fuel storage.
Recommended uncast shelf-life is 6 months. One cubic foot of cast material requires 44Kg (97 pounds) of liquid mix (1.59 kg to cast 1liter). For further information on Boro-silicone, in the form of pre-cast solid pieces made
to your design or as liquid castable in the field, please contact us via the link below.
Chemical & Physical Properties:
Hydrogen atoms/cc: 4.49 x 1022
Boron atoms/cc: 0.94 x 1021
Density: 1.59g/cc
44kg (97 lbs) of dry-mix powder will cast one cubic foot.
Options:
- Other boron concentrations available on request.
- Varied shapes and sizes, including pre-cast pieces to individual designs.
Uses:
- Reactor cavity neutron shielding plug.
- Biological neutron shield for coolant re-circulating lines.
- In-core instrumentation shield.
- Reactor fuel transport flasks.