METHOD FOR MANUFACTURING A VESSEL FOR STORING RADIOACTIVE WASTE

摘要

In casting lead in transfer vessel, a lead-casting method is characterized by: (1) cleaning inner surface of stainless steel vessel; (2) pouring copper plating solutions into vessel and agitating it, plating inner surface of vessel with copper by precipitation; (3) casting lead in it and solidifying. In this method, copper plating soution consits of CuSO4, NaOH and formalin, it is heated to temperature range of 60-70 deg.C. The plated thickness of copper is controlled to 3-5 μm. Before, casting vessel is heated uniformly by electric heater to temperature range of 300-350 deg.C and temperature of lead melts is controlled to 380-400 deg.C. The directional solidification of lead can be performed by raising electric heater.