Question

which of the following machine parts always require guards?
select the 3 answer options that apply.
fan blades
levers
rotating barrels
abrasive wheel machinery
if you need to review this content, it can be found in the when guarding is required module of the machine guarding topic.

Explanation:

Fan blades, rotating barrels, and abrasive wheel machinery are parts that can cause serious injury if exposed. Fan blades can cut, rotating barrels may trap body parts, and abrasive wheel machinery can throw debris. Levers are usually designed for safe operation without the need for constant guarding as they are controlled by operators and don't have the same inherent risks as the other three when it comes to causing severe injury from exposure.

Answer:

Fan blades, Rotating barrels, Abrasive wheel machinery