Machine Guarding (OSHA 29 CFR 1910 Subpart O):
This subpart of the OSHA Standard requires guarding of all dangerous moving parts in three basic areas:
1. The point of operation: that point where work is performed on the material, such as cutting, shaping, boring, or forming of stock;
2. Power transmission apparatus: all components of the mechanical system that transmit energy to the part of the machine performing the work. These components include flywheels, pulleys, belts, connecting rods, couplings, cams, spindles, chains, cranks, and gears;
3. Other moving parts: all parts of the machine which moves while the machine is working. These can include reciprocating, rotating, and transverse moving parts, as well as feed mechanisms and auxiliary parts of the machine.