14 Questions
What is the primary objective of machine safeguarding?
To protect workers from injuries
What is the point of operation in machine safeguarding?
The point where work is performed on the material
What type of guard provides a barrier that is a permanent part of the machine?
Fixed guard
What happens when an interlocked guard is opened or removed?
The tripping mechanism and/or power shuts off or disengages
What type of guard is adjustable to facilitate a variety of production operations?
Adjustable guard
What type of hazard is associated with rotating parts such as belts and pulleys?
In-running nip points
What is the primary purpose of a pullback device?
To withdraw the operator's hands from the point of operation when a machine is in use.
What is the main advantage of using a robot in a manufacturing process?
They can be used to load and unload stock, assemble parts, and transfer objects.
What is the purpose of a self-adjusting guard?
To automatically adjust to fit different materials or sizes.
What is the primary purpose of a gate?
To prevent the machine from starting if the gate is not fully closed.
What is safeguarding by location/distance?
Locating machines or their moving parts so they are not accessible or do not present a hazard.
What is the primary purpose of a restraint device?
To restrain the operator's hands within a predetermined safe area.
What is the primary purpose of a holding tool?
To place and remove stock in the danger area.
What is the primary purpose of an adjustable guard?
To automatically adjust to fit different materials or sizes.
Study Notes
Machine Safeguarding
- Machine-related injuries can be severe, including crushed hands and arms, cut off fingers, and blindness, hence safeguards are essential to protect workers.
Point of Operation
- The point of operation is where work is performed on the material, such as cutting, shaping, boring, or forming of stock, and it must be guarded.
Rotating Parts
- In-running nip points, belts, pulleys, chains, and sprockets are rotating parts that require safeguarding.
Methods of Machine Safeguarding
- Fixed Guard: Provides a permanent barrier, preferable to all other types of guards.
- Interlocked Guard: Automatically shuts off or disengages the machine when opened or removed, and cannot cycle or be started until the guard is back in place.
- Adjustable Guard: Provides a barrier that can be adjusted to facilitate various production operations.
- Self-Adjusting Guard: Automatically adjusts to different sizes or shapes of material being processed.
- Pullback Device: Utilizes a series of cables attached to the operator's hands, wrists, and/or arms to withdraw hands when the slide/ram begins to descend.
- Restraint Device: Uses cables or straps attached to the operator's hands and a fixed point to restrict access to the point of operation.
- Gate: A movable barrier device that protects the operator at the point of operation before the machine cycle can be started.
Safeguarding by Location/Distance
- Locate machines or their dangerous moving parts to make them inaccessible or non-hazardous to workers during normal operation.
- Maintain a safe distance from the danger area.
Robots
- Machines that load and unload stock, assemble parts, transfer objects, or perform other tasks, best used in high-production processes requiring repeated routines to prevent hazards to employees.
Holding Tools
- Used to place and remove stock in the danger area, to prevent injuries.
OSHA Machine Guarding Requirements
- OSHA has specific requirements for machine guarding to prevent injuries and ensure worker safety.
This quiz covers the importance of machine safeguards in preventing injuries and discusses the point of operation where work is performed on materials.
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