To assess the possibility of solidification of the low-level raffinate, with the aim of its near-surface storage, the traditional LLW cementing technique was tested.

Test results indicated that, during cementing, the solidification process proceeded uniformly, and the cement blocks produced did not crack on discharge from the mold or in subsequent storage. Although the cement bulk per volume of raffinate being solidified was rather high (1.5 m3 per 1 m3 raffinate), the cost of the cementing process should not be very high, because the low content of radionuclides in the raffinate (LLW) allows the solidification process to be undertaken with the use of routine non­radiochemical equipment.