School Safety Training Machine Guarding WAC 296-806-100

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Notice

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This presentation is provided to all Educational Service District 101 (ESD 101) schools at no cost.

This presentation contains copyrighted materials purchased by ESD 101 for the exclusive use of training school personnel within ESD 101.

This presentation may not be reproduced except to print “handouts” or “notes pages” for use during training within ESD 101 school districts.

If the school district does not have Microsoft’s PowerPoint software available, a PowerPoint viewer can be downloaded from the internet at no cost.

Questions may be directed to the ESD 101 Risk Manager.

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Rule of Thumb

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

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Regulatory Requirements

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Regulatory requirements found in WAC 296-806-100 Applies to specific types of equipment Delineates general requirements

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Where Mechanical Hazards Occur

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The point of operation In the power transmission apparatus Other moving parts

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Hazardous Mechanical Motions

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Rotating Reciprocating Transverse

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Hazardous Actions

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Cutting Punching Shearing Bending

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Types of Rotating Mechanisms

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Collars Couplings Cams Clutches Flywheels Shaft ends Spindles

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Nip Points

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Caused by rotating parts Causes include

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Parts rotating in opposite directions

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Parts rotating tangentially

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Parts rotating close to a fixed part

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Types of Reciprocating Motions

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Back and forth Up and down

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Types of Transverse Motions

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Straight and in a continuous line Examples include two pulleys and a belt

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Cutting Actions

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Include

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Rotating motions

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Reciprocating motions

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Transverse motions

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Types of Cutting Mechanisms

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Band saws Circular saws Boring or drilling machines Lathes Milling machines

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Types of Punching Actions

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A ram mechanism:

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Blanks

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Draws

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Stamps Used on metal or other materials

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Types of Punching Equipment

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Power presses Iron working equipment

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Types of Shearing Actions

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Uses a powered slide or knife Done to trim or shear metal or other materials

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Types of Shearing Equipment

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Shears that are operated:

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Hydraulically

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Mechanically

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Pneumatically

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Types of Bending Actions

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Power is applied to a slide to:

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Draw

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Stamp Used on metal or other materials

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Types of Bending Equipment

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Power presses Press brakes Tubing benders

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Requirements for Safeguards

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Minimum general requirements include:

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Prevent contact

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Secure

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Protect from falling objects

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Create no new hazards

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Create no interference

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Allow for safe lubrication

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Classifications of Safeguards

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Guards Devices Location/distance Feeding and ejection methods Miscellaneous aids

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Types of Guards

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Fixed Interlocked Adjustable Self-adjusting

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Types of Devices

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Presence Sensing

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Photoelectrical

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Radio frequency

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Electromechanical Pullbacks or Restraints

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Types of Devices (cont.)

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Safety Controls

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Safety trip control

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Pressure-sensitive body bar

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Safety tripod

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Safety tripwire cable

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Two-hand control

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Two-hand trip Gates

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Interlocked

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Other

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Location/Distance

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Makes it virtually impossible to contact moving parts Separates operators from the equipment Limited by the available workspace

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Feeding and Ejection Methods

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Automatic feed Semiautomatic feed Automatic ejection Semiautomatic ejection Robot

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Miscellaneous Aids

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Awareness barriers Protective shields Hand-feeding tools and holding fixtures

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Quiz 1.

Mechanical hazards occur at the point of operation, in the power transmission apparatus, and _________.

2.

Any moving part on a piece of equipment that could injure an employee should be guarded. True or False 3.

Power presses are extremely dangerous because of the force necessary for them to operate. T or F 4.

Shearing mechanisms can be operated with_________, _________, or _________ energy.

5.

As long as the guards remain in place, operators should not be trained on machine guarding. T or F

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Quiz (cont.) 6.

A robot is one type of automated feeding and ejection mechanism. True or False 7.

Hazardous mechanical motions include ____________, __________, and _____________.

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Nip points are created when sliding mechanisms move back and forth. True or False 9.

Cutting mechanisms include ________________, ________________ and __________________.

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Location and distance is not a classification of machine safeguarding. True or False

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Quiz Answers 1.

2.

3.

4.

5.

Mechanical hazards occur at the point of operation, in the power transmission apparatus, and in any other moving parts.

True.

All moving parts that create a hazard should be guarded.

True.

The force of a power press can destroy metal, let alone the human body.

Shearing mechanisms can be operated with hydraulic, mechanical, or pneumatic energy.

False.

If operators work with equipment containing safeguards, they should be adequately trained on how to use them.

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Quiz Answers (cont.) 6.

True.

A robot is a type of feeding and/or ejection method.

7.

Hazardous mechanical motions include rotating, reciprocating, and transverse.

8.

9.

False.

Nip points are created by rotating parts.

Cutting mechanisms include band saws, circular saws, drilling machines, lathes, and milling machines.

10.

False.

Location and distance is one of five classifications of machine safeguarding.

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