FLAMMABLE and combustible liquids are present in nearly every workplace. Gasoline, diesel fuel, and many common products such as solvents, thinners, cleaners, adhesives, paints, and polishes may be ...

Every day industrial workers transfer potentially hazardous chemicals, such as solvents, acetones, lubricants, cleansers, and acids, from large drums into smaller containers or into machinery.

We first see the Zone system in Art. 505, which provides this alternative system for Class I locations (the combustibles are gases). The Zones are 0, 1, and 2. But if the combustibles are dust or ...

Article 503 gives you the option of using the Zone system (Art. 506) instead of the Division system [503.6]. Article 506 applies to Class II and Class III locations; we’ll discuss it in a future ...