Final answer:
Conveyor installation codes require guarding at all nip points to protect workers from injury. Guarding may include barriers or enclosures that prevent access to dangerous moving parts on conveyor systems used in places like automotive assembly lines.
Step-by-step explanation:
The code regarding conveyor installations typically requires that all guarding is put in place to protect workers from being injured by nip points. Nip points, which are points where two moving parts come into contact, such as at a pulley and belt intersection, can pose significant hazards. For ensuring safety, the code usually dictates that these areas must be guarded by barriers or enclosures that prevent access to moving parts capable of causing injury. For instance, in an automotive assembly line scenario where a conveyor belt moves the car past assembly stations as described in Figure 3.1, effective guarding must be provided wherever there is a risk of a person's body part getting caught between the conveyor belt and a stationary structure or between moving parts. The guarding should be designed and installed in such a way that it is not easily bypassed or disabled and does not pose an additional hazard in itself. In conclusion, codes related to conveyor belt safety are heavily focused on minimizing the risk of injury by requiring proper guarding measures at all potential nip points. It is important for companies to comply with these safety standards to maintain a safe work environment.