General Industry – Machine Guarding v.03.01.17 Quiz

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

Crushed fingers or hands, amputations, burns, blindness

What is the rule to remember about safeguarding machinery?

Any machine part, function, or process which may cause injury must be safeguarded.

What are some 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

What are some activities that can lead to amputations due to machinery accidents?

Unguarded/inadequately safeguarded machinery, materials handling activities, activities involving stationary machines 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 is the title of the presentation mentioned in the text?

10-hr. General Industry – Machine Guarding Signup and view all the answers

What is the point of operation in a machine?

Where work is performed on material (e.g., cutting, shaping, boring, forming) Signup and view all the answers

Give an example of a power transmission device in a machine.

Flywheels Signup and view all the answers

What are some examples of hazardous motions and actions in machinery?

Rotating, in-running nip points, reciprocating, transversing, cutting, punching, shearing, bending Signup and view all the answers

What is the purpose of guarding rotating parts with hazardous projections?

To prevent contact and ensure safety Signup and view all the answers

Which machines require point of operation guarding?

Guillotine cutters, shears, alligator shears, power presses, milling machines, power saws, jointers, portable power tools, forming rolls, calenders Signup and view all the answers

When should fan blades be guarded?

When the periphery of blades is less than 7’ above the floor or working level, and guards with openings no larger than ½” Signup and view all the answers

What are the requirements for safeguarding abrasive wheel machinery?

Adjustable tongue guard to within ¼” of wheel, work rest with maximum opening of 1/8”, cover spindle end, nut, flange projections Signup and view all the answers

How should revolving barrels, containers, and drums be guarded?

By an enclosure interlocked with the drive mechanism, and with guards having openings no larger than ½” Signup and view all the answers

What are some examples of machinery associated with amputations?

Mechanical power presses, power press breaks, conveyors, printing presses, roll-forming machines, shearing machines, food slicers, meat grinders, band saws, drill presses, milling machines, grinding machines, slitters Signup and view all the answers

What are the minimum general requirements for safeguards in machinery?

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

What are the primary methods of safeguarding machinery?

Guards and devices Signup and view all the answers

What are the four general types of guards?

Fixed, Interlocked, Adjustable, Self-adjusting Signup and view all the answers

What is the purpose of a fixed guard?

Provides a barrier and is a permanent part of the machine Signup and view all the answers

How do interlocked guards function?

They shut off or disengage power, stop moving parts, and prevent starting of the machine when the guard is open Signup and view all the answers

What is the purpose of additional safeguarding for machines?

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

What is the purpose of adjustable guards?

They shut off or disengage power, stop moving parts, and prevent starting of the machine when the guard is open Signup and view all the answers

What must be safeguarded in a machine?

The point of operation, as well as all parts of the machine that move while the machine is working. Signup and view all the answers

How are self-adjusting guards determined?

Openings of barriers are determined by the movement of the stock Signup and view all the answers

What is the guiding rule for safeguarding machines?

Any machine part, function, or process which may cause injury must be safeguarded. Signup and view all the answers

What are examples of presence-sensing devices?

Photoelectric, Radiofrequency, Electromechanical Signup and view all the answers

What are some methods for safeguarding the feeding process of a machine?

Maintaining safe distance, automatic/semi-automatic feed, and transparent enclosure guard. Signup and view all the answers

What do pullback devices do?

They utilize a series of cables attached to the operator and automatically withdraw the hands from the point of operation when the slide/ram begins to descend Signup and view all the answers

Name some miscellaneous aids for safeguarding machines.

Awareness barriers, protective shields, and hand-feeding tools. Signup and view all the answers

How do restraint devices function?

They utilize cables/straps attached to the operator’s hands and a fixed point, with no extending/retracting action involved Signup and view all the answers

What hazard is identified in the text related to a radial saw?

Unguarded lower blade and arbor end. Signup and view all the answers

What is the purpose of safety trip controls?

They deactivate the machine in an emergency situation Signup and view all the answers

What hazard is identified in the text related to a chain rail?

Guard removed from chain rail exposing pins on the spiked chain and sprocket mechanism. Signup and view all the answers

What is critical for the positioning of two-hand controls?

Positioning is critical; the machine must stop before the body reaches the danger area Signup and view all the answers

Where should operator's controls be located for safeguarding?

At a safe distance from the machine. Signup and view all the answers

What is the purpose of gate devices?

They are moveable barriers that protect the operator at the point of operation before the machine cycle can be started Signup and view all the answers

What are some feeding and ejection methods for safeguarding machines?

Automatic/semi-automatic feed, automatic/semi-automatic ejection, transparent enclosure guard, stock feed roll, and completed work robots. Signup and view all the answers

What is the source of the graphics mentioned in the text?

OSHA PPT 10-hr. General Industry – Machine Guarding v.03.01.17 Signup and view all the answers