General Industry Machine Guarding Quiz

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Questions and Answers

What are some possible machinery-related injuries mentioned in the text?

Concussions and sprains

Fractures and dislocations

Crushed fingers and hands, amputations, burns, blindness (correct)

Bruises and cuts

What is a good rule to remember according to the text?

Any machine part, function, or process which may cause injury must be safeguarded (correct)

Any machine part that causes injury must be reported to the supervisor

Machines should not be operated without proper training

Machines should be operated only by authorized personnel

What are examples of how machine accidents can occur?

Reaching-in to 'clear' equipment, not using Lockout/Tagout, unauthorized persons doing maintenance or using the machines, missing or loose machine guards (correct)

Following safety procedures and using authorized personnel

Using personal protective equipment and emergency response training

Proper use of Lockout/Tagout and regular maintenance

What is mentioned as a source of amputations in the text?

Unguarded/inadequately safeguarded machinery Signup and view all the answers

What are the three fundamental machine areas mentioned in the text?

Point of operation, power transmission device, operating controls – mechanical or electric power control Signup and view all the answers

What should be done with any machine part, function, or process which may cause injury?

It should be safeguarded Signup and view all the answers

Which of the following is NOT a primary method of safeguarding machinery as per the provided text?

Probe detection and safety edge devices Signup and view all the answers

What is the purpose of fixed guards for machinery?

To provide a permanent barrier that prevents contact with dangerous machine parts Signup and view all the answers

Which type of guard shuts off power and stops moving parts when open, according to the text?

Interlocked guard Signup and view all the answers

What do self-adjusting guards do as per the text?

Place a barrier between the danger area and operator based on stock movement Signup and view all the answers

What do pullback devices do according to the text?

Automatically withdraws hands from the point of operation when slide/ram begins to descend Signup and view all the answers

What is the purpose of restraint devices for machinery?

To utilize cables/straps attached to operator’s hands and a fixed point Signup and view all the answers

What is the function of safety trip controls for machinery?

Deactivates the machine in an emergency situation Signup and view all the answers

What is the purpose of the safeguards mentioned in the text?

To protect workers from machinery-related injuries Signup and view all the answers

What must be safeguarded according to the text?

Any machine part, function, or process that may cause injury Signup and view all the answers

Which of the following is an example of feeding process safeguarding?

Maintaining safe distance to protect worker Signup and view all the answers

What is one of the methods mentioned for feeding and ejection in the text?

Robots Signup and view all the answers

What is an example of a miscellaneous aid mentioned in the text?

Awareness barriers Signup and view all the answers

What hazard is identified in the text?

Unguarded lower blade and arbor end of radial saw Signup and view all the answers

What was removed from the chain rail exposing pins on the spiked chain and sprocket mechanism?

Protective shield Signup and view all the answers

Based on the text, what is true about machine safeguarding?

It is an essential measure to protect workers from machinery-related injuries Signup and view all the answers

What should be located at a safe distance from the machine based on the text?

Operator’s controls Signup and view all the answers

What should be transparent according to the text?

Enclosure Guard Signup and view all the answers

What is the point of operation in a machine?

The area where materials are worked on Signup and view all the answers

Which of the following is an example of a power transmission device in a machine?

Flywheels and pulleys Signup and view all the answers

What are hazardous motions and actions in the context of machinery?

Rotating and reciprocating motions Signup and view all the answers

What do rotating parts with hazardous projections pose a risk of?

Entanglement or laceration Signup and view all the answers

Which type of machinery action may involve rotating, reciprocating, or transverse motion?

Cutting action Signup and view all the answers

What type of machinery requires point of operation guarding?

Power presses Signup and view all the answers

When should fan blades be guarded according to the text?

When periphery of blades is less than 7’ above the floor Signup and view all the answers

What safeguards are required for abrasive wheel machinery?

Guard by an enclosure interlocked with drive mechanism Signup and view all the answers

What type of machinery requires guarding revolving barrels, containers, and drums?

Milling machines Signup and view all the answers

What components of power-transmission apparatus require guarding if less than 7 feet from the floor or working platform?

Belts and chain drives Signup and view all the answers

Which of the following is an example of machinery associated with amputations according to the text?

Printing presses Signup and view all the answers

What are the minimum general requirements for safeguards according to OSHA?

Prevent contact, be secured, protect from falling objects, create no new hazards Signup and view all the answers

Study Notes

Common injuries include cuts, lacerations, and amputations due to improper machine handling or lacking safety measures.
Machinery-related accidents frequently result in severe injuries or fatalities.

Safety Rule

Always ensure all moving parts are adequately guarded to prevent accidents.

Causes of Machine Accidents

Accidents can occur from improper use, lack of training, and failure to follow safety protocols.
Equipment failure or malfunction may contribute to accidents.

Source of Amputations

Amputations often stem from contact with unguarded machinery parts, including rotating and reciprocating components.

Fundamental Machine Areas

The text identifies three critical areas that require attention: point of operation, power transmission, and feeding mechanisms.

Injury Prevention

Any machine part or process that poses a risk of injury must be safeguarded appropriately.

Safeguarding Machinery

Methods of safeguarding machinery include: fixed guards, interlocked guards, and presence-sensing devices.
An example of a method NOT typically included in primary safeguarding is reliance on employee training alone.

Fixed Guards

Fixed guards serve to provide a permanent barrier protecting operators from hazardous areas.

Interlocked Guards

Interlocked guards automatically cut off power and halt movement when the guard is opened.

Self-Adjusting Guards

These guards automatically adjust to the position of the operator or the material being processed, maintaining safety.

Pullback Devices

Pullback devices allow operators to have free motion for their hands while ensuring they are pulled back when the machine is engaged.

Restraint Devices

Restraint devices prevent operators from reaching into hazardous areas while the machinery is in operation.

Safety Trip Controls

Safety trip controls enable operators to stop machines quickly in emergencies, reducing risk of injury.

Overall Purpose of Safeguards

The main purpose of safeguards is to minimize risk and protect operators from potential hazards.

Safeguarding Requirements

Every part, function, and process that poses a hazard must be safeguarded, ensuring operator safety.

Feeding Process Safeguarding

An example of feeding process safeguarding includes devices that ensure safe feeding of materials without exposing operators to danger.

Feeding and Ejection Methods

Methods like automatic feed mechanisms are referenced for enhancing safety during feeding and ejection.

Miscellaneous Aids

An example of a miscellaneous aid to enhance safety is protective shields placed around machinery.

Identified Hazards

Hazards are identified based on machine type and processes involved, focusing on high-risk areas for injuries.

Exposed Mechanisms

Removal of barriers exposed pins in the spiked chain and sprocket mechanism, increasing the risk of injury.

Machine Safeguarding Insight

Effective safeguarding principles dictate that machinery must be designed to minimize risks actively.

Safe Distance Requirement

Operators should remain at a safe distance from machines to avoid potential accidents.

Transparency Requirement

Guards that are transparent allow for visibility of operations while maintaining necessary protection.

Point of Operation

The point of operation refers to where work is performed on the material, which is often the most hazardous area.

Power Transmission Components

Examples of power transmission devices include belts, chains, gears, and pulleys.

Hazardous Motions and Actions

Hazardous motions and actions encompass movements like rotating, reciprocating, or transverse actions that pose threats to operators.

Risks of Rotating Parts

Rotating parts with hazardous projections can lead to entanglements, causing injuries.

Machinery Operations

Machinery actions such as rotating, reciprocating, or transverse motion require careful guarding to protect operators.

Fan Blade Guarding

Fan blades should be guarded whenever they are in operational positions to prevent accidental contact.

Abrasive Wheel Machinery Safeguards

Abrasive wheel machinery requires specific safeguards like protective guards to prevent debris and accidents.

Guarding for Containers

Machinery that involves revolving barrels, containers, and drums must have proper guards to reduce risks.

Power-Transmission Apparatus Guarding

Parts of power-transmission apparatus positioned less than seven feet from floors or platforms must be guarded.

Certain equipment, such as saws and presses, is directly associated with a higher risk of amputations.

OSHA Safeguard Requirements

OSHA specifies minimum general safeguard requirements to ensure all machinery is operable with safety measures in place.

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Description

Test your knowledge of machine guarding in the general industry with this quiz. Learn about primary and secondary methods of safeguarding machinery, including the proper design, construction, installation, and maintenance of guards and devices. This quiz is based on the PPT 10-hr General Industry - Machine Guarding v.03.01.17 created by OTIEC Outreach Resources Workgroup.