Class D extinguishing powder can be ordered from various chemical vendors. Class C - energized electrical equipment. Class D - combustible metals such as magnesium, titanium, zirconium, sodium, lithium, and potassium. The inspection tag is dated and initialed every six months. Annual extinguisher maintenance and periodic hydrostatic testing in accordance with OSHA 29 CFR 1910.157 is done by a contractor under the supervision of Buildings and Grounds.
Extinguisher use is demonstrated by the faculty member at the beginning of each laboratory course.
If extinguishers are to be discharged during the demonstration, special extinguishers should be requested from Buildings and Grounds. All teaching chemical laboratories are equipped with eyewash stations or hand held drench hoses. All eyewash stations and hand-held drench hoses are flushed once a week for at least three minutes by staff assigned by the Departments. Proper use of eyewash stations and drench hoses is described by the faculty member or instructor at the beginning of the semester in all laboratory courses. All instructional chemical laboratories that do not have hand-held drench hoses are equipped with emergency showers.