Nuclear Power

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to be carried out with the same equipment: evaporation of the
waste solution mixed with the

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borosilicate: any of several salts derived from both boric acid and silicic
acid and found in certain minerals such as tourmaline. additives necesary
for the production of borosilicate glass, calcination and elaboration of
the glass. These operations are carried out in a metallic pot that is
heated in an induction furnace. The vitrification of one load of wastes
comprises of the following stages. The first step is 'Feeding'. In this
step the vitrification receives a constant flow of mixture of wastes and of
additives until it is 80% full of calcine. The feeding rate and heating
power are adjusted so that an aqueous phase of several litres is
permanently maintained at the surface of the pot. The second step is the
'Calcination and glass evaporation'. In this step when the pot is
practically full of calcine, the ...

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may be stored is equivalent to nine years of production.
Powerful ventilators provide air circulation to cool down glass.

The glass produced has the advantage of being stored as solid rather
than liquid. The advantages of the solids are that they have almost
complete insolubility, chemical inertias, absence of volatile products and
good radiation resistance. The ruthenium that escapes is absorbed by a
filter. The amount of ruthenium likely to be released into the environment
is minimal.

Another method that is being used today to get rid of radioactive
waste is the 'placement and self processing radioactive wastes in deep
underground cavities'. This is the disposing of ...

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