The delivery includes replacement of the existing technology, which serves for retention of the liquid radioactive waste contaminated with radionuclide I-131. The waste comes from thyroid cancer patients treatment. The contract includes such services as new cladding of the retention tanks, replacement of pipes, fittings and electrical installations, including measurement of activity in tanks. It also includes the supply of an automated control system enabling pumping, retention and controlled liquid waste discharge according to I-131 activity. The contract implementation will finish by mid-2021.