Surface Materials Used in the Facilities for Nuclear Power and Radioisotopes

—γ Radiation Effects on Paints—

Abstract

It is desirable that the paints which are used for surface coating to protect facilities for nuclear power and radioisotopes from radioactive contamination have low contaminability, high decontaminability and radiation resistibility. In order to investigate the influence of r radiation on paint film appearance and also on the contaminability and decontaminability of the paint, many kinds of paints were exposed to r radiations by ⁶⁰Co.
When γ radiation dose was less than 10⁷R, JIS product vinyl chloride resin paint, chlorinated rubber paint and nitrocellulose-acryl resin paint showed low contaminabilities and high decontaminabilities. With respect to γ radiation resistibilities, all of the two liquids hardening type epoxy resin paints were fairly good.
To enable the paint to function as surface materials for radioactive contamination protection, the upper limit of γ radiation dose may be 10⁹R.