Paragraph 5.1The radiation warning symbol is shown in the following diagram with yellow background and three-blade design in magenta, where R is the radius of the inner circle.Paragraph 5.2The colors of the symbol background and the three-blade design are not restricted by the prescription in Paragraph 5.1, if the radiation warning symbol is made in a special way such as etching or hard press. An appropriate warning content may be placed on the warning symbol or at a nearby eye-catching position if required.Article 5_Paragraph 5.1_The radiation warning symbol.PDFArticle 5_Paragraph 5.1_The radiation warning symbol.doc