Arc welding requires the use of screens to prevent co-worker…

Arc welding requires the use of screens to prevent co-workers and others from directly viewing the welding operations. The screens, however, cannot restrict the ventilation for the welder. What is the recommended height above the floor for screens to be mounted, unless the welding is taking place at floor level?

A small electronics repair company keeps a variety of volati…

A small electronics repair company keeps a variety of volatile solvents on hand for cleaning of electronic components.  The solvents consist of acetone, ethanol, and isopropyl alcohol, all of which are class I flammable liquids.  What is the maximum amount of these solvents that can be stored in a single storage cabinet?