Patent Number: 
Section: claims

1. A coating solution for protecting a surface of a nuclear fuel rod, obtained by dissolving a polymer resin comprising 52-62 wt % of methacrylic acid, 34-42 wt % of 2-hydroxyethyl methacrylate and 0.01-12 wt % of methyl methacrylate in a solvent mixture of isopropanol, ethanol and water. 2. The coating solution of claim 1, comprising 9-12 wt % of the polymer resin and 88-91 wt % of the solvent mixture of isopropanol, ethanol and water. 3. A coating method for protecting a surface of a nuclear fuel rod, comprising:(1) forming a coating film on a surface of a nuclear fuel rod, using a coating solution obtained by dissolving a polymer resin comprising 52-62 wt % of methacrylic acid, 34-42 wt % of 2-hydroxyethyl methacrylate and 0.01-12 wt % of methyl methacrylate in a solvent mixture of isopropanol, ethanol and water;(2) drying the nuclear fuel rod; and(3) loading the dried nuclear fuel rod in a skeleton. 4. The coating method of claim 3, wherein forming the coating film in (1) is performed while a concentration of the coating solution is corrected to be maintained at an initial value by measuring a density of the coating solution using a hydrometer. 5. The coating method of claim 3, wherein drying the nuclear fuel rod in (2) is performed using hot air drying or air drying.