MEJORAS INTRODUCIDAS EN EL OBJETO DE LA PATENTE PRINCIPAL SOBRE PROCEDIMIENTO Y APARATO PARA LA LIMPIEZA DE ELEMENTOS DE INSTALACIONES CENTRALES NUCLEARES.

摘要

Radio-actively contaminated surfaces are cleaned by blasting the surface with particles of boron trioxide propellled through a jet with compressed gas. As a result of the abrading action, the boron trioxide becomes contaminated with abraded, radio-active solid particles. The abraded solid particles are separated from the boron trioxide by admixing water to dissolve the boron trioxide and then filtering the boron trioxide aqueous solution containing abraded solid particles to separate and recover the abraded solid particles in the boron trioxide solution. The boron trioxide aqueous solution may be treated to recover boron trioxide particles. The separated radio-active particles may be sent to a treating plant for concentration and recovery of radio-active values.