Abstract: A two-component mixing type coating method which is utilized for coating car components, and the like. A main component solution and a hardner solution are run together at an intermediate portion of a supply conduit and are mixed. The mixture solution is sent to a coating spray gun and injected from the gun for coating. The two-component mixing type coating method of the present invention is characterized in that check valves and stop valves are disposed at positions of the flow conduits upstream from the junction, an escape valve is connected to a flow conduit at a portion downstream from the junction, and when the coating spray operation from the coating spray gun is stopped, the escape valve is opened and then the stop valves are closed by control means.

Abstract: A two-component mixing type coating apparatus comprises a supply/mixing device for letting a main component and a hardener run together at an intermediate portion of a supply conduit and sending them to a coating spray gun, check valves disposed in flow portions upstream of a junction in order to prevent backflow from the junction, and stop valves disposed in the flow portions between the check valves and the junction in order to close the flow portions in response to the stop of spray of coating by the coating spray gun.

Abstract: Corrosive radionuclides, other radionuclides and fission-products contained in the primary cooling water employed in light-water type nuclear reactors and waste water discharged from the reprocessing of neutron irradiated nuclear fuels (both being referred to as radioactive waste water hereunder) can be rendered harmless to man by being adsorbed and captured by mordenite and the mordenite which has captured said nuclides is sintered to a ceramic form, thereby sealing and fixing the nuclides in said sintered mardenite.