not drinking water. to prohibit drinking of unsuitable water. industrial safety engineer with a glass of water undrinkable. safety

iso 7010 p005 not drinking water undrinkable forbidden prohibited sign safety engineer engineering industrial worker ppe procedure regulations rule pictogram danger pollutants toxic production helmet glasses gloves coverall vest reflective maintenance supervisor workshop preventive inspector first labor day caution risk occupational prevention occupation protection professional handyman industry security cartoon equipment health personal work prohibit unsuitable glass