WAC 296-806-42558. Follow these requirements for chocolate melting, refining, and mixing kettles

(1) You must provide a cover to enclose the top of the kettle. (2) You must make sure the bottom outlet of each kettle is designed so the operator cannot: (a) Reach in to touch the revolving paddle. (b) Come in contact with the shear point between the paddle and the side of the kettle.