1. Safety Training Presentations
Institute of Occupational Safety and Health
Safety Training Presentations
Machine Guarding and Amputation Hazards
Copyright ã1999 Business & Legal Reports, Inc.

2. FY-11 OSHA Susan Harwood Grant Program
This material was produced under grant number SH22297-SH1 from OSHA. It does not necessarily reflect the views or policies of the U.S. Department of Labor, nor does mention of trade names, commercial products, or organizations imply endorsement by the U.S. Government.

3. Objectives Students will: Identify sources of amputation hazards
Describe available protection and safeguarding methods
Identify hazardous machine components and motions
Identify sources of amputations at the workplace.
Interpret OSHA’s role and standards
The information provided in this presentation does not specifically address amputation hazards on all types of machinery in general industry, construction, maritime
and agricultural operations; however, many of the described safeguarding techniques may be used to prevent other amputation injuries.
Copyright ã1999 Business & Legal Reports, Inc.

4. Amputation
Amputations are most serious and debilitating workplace injuries.
They are widespread and involve a variety of activities and equipment.
Amputations occur most often when workers
operate unguarded or inadequately safeguarded mechanical equipment
Amputations are widespread and involve a variety of activities and equipment. Each year,
thousands of employees lose fingers, hands, feet, and other body parts–mostly through
compression, crushing, or by getting them caught between or struck by objects.
Most amputations involve fingertips.
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5. Amputation (cont)
Injuries also happen during materials handling when using forklifts and doors as well as trash compactors
While using powered and non-powered hand tools.
While performing maintenance or repairs to improperly secured (LOTO) equipment
Amputation often results in permanent disability
In Sept 2011 a worker cleaning a meat mixer in NJ died after falling inside the mixer
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6. Machine is not safeguarded because …
Equipment came that way
I bought it used and that part was missing
Guard gets in the way
Is easier to work around it
It’s common sense: no one will put their hands in there
I don’t know…
Think of it as Jeff Foxworthy says: You are a Redneck if… In this case you are going to
loose a limb if…
These and many more reasons are the main cause of workplace injuries
Copyright ã1999 Business & Legal Reports, Inc.

7. Sources of Amputation Mechanical power presses
Power press brakes
Powered and non-powered conveyors
Printing presses
Roll-forming and roll bending machines
Food slicers, meat grinders, meat-cutting band saws
Drill presses, and milling machines & shears
Grinders and slitters
Amputations occur most often when employees operate unguarded or inadequately safeguarded:
Copyright ã1999 Business & Legal Reports, Inc.

8. Sources of Amputation Hazards
Mechanical power presses, Power press brakes, Powered and non-powered conveyors, Printing presses, Roll-forming and Roll bending machines, Food slicers, Meat grinders, Meat-cutting band saws, Drill presses, and Milling Machines as well as shears, grinders, and slitters.
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9. Hazardous Machine Components
Point of operation
Area where work is performed
Power-transmission devices
Pulleys, belts, gears, etc
Other moving parts
Reciprocating action, rotating
flywheels, pulleys, belts, chains, couplings, spindles, cams, and gears, connecting rods and other machine components that transmit energy
Machine components
that move during machine operation such as
reciprocating, rotating, and transverse moving
parts as well as auxiliary machine parts.
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10. Hazardous Machine Motions
Rotating – Circular motion
Reciprocating – Back and forth motion
Transverse – Straight continuous line
Cutting – Sawing, boring, milling
Punching – Metal Stamping
Shearing – Metal Trimming
Bending – Metal forming
All mechanical motion is hazardous in one way or another.
“Pinch Point” Occurs when two parts move or rotate together such as gears, rollers
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11. Hazardous Activities
Employees operating and caring for machinery perform activities that presents amputation hazards such as:
Set up and preparation
Maintenance
Machine set up
Clearing Jams
Lubrication and Inspection
Employees often find themselves conducting these operations without proper training
and fail to properly implement Lock Out /Tag Out procedures resulting in injuries.
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12. Controlling Amputation Hazards
Machine Safeguarding is essential for protecting employees from preventable injury. A good rule to remember is:
Any part of a machine, function, or process that may cause injury must be safeguarded
Safety is everyone's responsibility not just your supervisor
Refer to slide #10, HAZARDOUS MACHINE MOTIONS and stress the importance of
properly safeguarding machines and motions to prevent injuries and the possibility of an
amputation.
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13. Protection Methods Recognize and avoid amputation hazards through:
Guarding
Safe work practices
Employee training
Administrative controls
Operating in a safe manner.
Machine safeguarding must be supplemented by an effective energy control (lockout/tagout) program that ensures that employees are protected from hazardous energy sources during machine servicing and maintenance work activities.
lockout/tagout is used where safeguards are rendered ineffective or do not protect employees from hazardous energy during servicing and maintenance operations.
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14. Preventive Measures Lock Out Tag out:
The best way to prevent amputations caused by stationary or portable machinery is with machine safeguarding and must be supplemented by an effective energy control (LOTO )

15. Machine safeguarding Two methods of machine safeguarding:
Guards and Safe Guarding Devices
Guards are physical barriers that prevent access to danger area
Devices: Help prevent contact with points of operation and may replace or supplement guards. Interrupt normal operation when workers hands are inside the machine
Guards: provide physical barriers to hazardous areas. They should be secure and strong, and employees should not be able to bypass, remove, or tamper with them. Guards should not obstruct the operator’s view or prevent employees from working.
Page 11 of your handout OSHA 3170 will show examples of safeguarding devices
Pages will show examples of safeguarding devices.
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16. Hand and Portable Power Tools
Ensure guards are in place and working when using circular portable saws with a blade of 2” or more in diameter.
All portable power tools with a 2” or more diameter wheel should have a constant pressure switch.
Applies to grinders, belt sanders, reciprocating saws, drills, etc.
The upper guard shall cover the saw to the depth of the teeth, except for the minimum arc required to permit the base to be tilted for bevel cuts. The lower guard shall cover the saw to the depth of the teeth, except for the minimum arc required to allow proper retraction and contact with the work. When the tool is withdrawn from the work, the lower guard shall automatically and instantly return to covering position.
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17. OSHA Machine Guarding E-Tool
eTools are "stand-alone" Web-based training tools on occupational safety and health topics.
They provide guidance information for developing a comprehensive safety and health program.
Therefore, they include elements that go beyond specific OSHA mandates, such as recommendations for good industry practice.
Go to the E-TOOL and show the students what is available for them.
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18. OSHA Standards
The following OSHA standards are a few of the regulations that protect employees from amputation hazards.
29 CFR 1910 Sub Parts O and P: Machinery and machine safeguarding
29 CFR 1926 Subpart I covers hand tools
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19. Helpful OSHA Resources
OSHA has many helpful programs, including assistance about safety and health programs, state plans, workplace consultations, voluntary protection programs, strategic partnerships, training and education, and more
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20. Summary
Proper LOTO will prevent injuries while performing maintenance on equipment
The use of Guards and devices are safeguarding methods to prevent amputations
Recognize dangerous machine motions
OSHA is here to help. If in doubt refer to the standards and supervisor
This slide lists the main points to remember when working around machinery
Copyright ã1999 Business & Legal Reports, Inc.

21. OSHA Contact Numbers
To report Unsafe Working Conditions, Safety and Health Violations Contact
OSHA (6742) / TTY
To File a Complaint Form:
To file an OSHA-7 report online, see how to file a complaint with OSHA (
For more information regarding your rights, see Worker Rights
OSHA is here to assist you in preventing injuries by providing training and assistance to ALL individuals. For more in formation please contact OSHA.
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22. References 29 CFR Part 1910 Subparts O and P cover
machinery and machine guarding.
29 CFR 1926 Subpart I covers hand tools and powered tools.
OSHA website:
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