Tools

1
Tools Machines

• IENG 331
• Safety Engineering
• Dr. Carter J. Kerk

2
Assignment

• Read Chapter 13
• HW13
• Search the web for checklists for inspecting
  machine/tools, or machine shops, or industrial
  workplaces
• Submit the checklist, along with the URL
• Due Friday, November 19

3
Tools Machines

• Major Source of Injuries
• Hand Tools
• 8 of lost time accidents
• Machines
• 8 of lost time accidents
• 17 of OSHA General Industry citations address
  machine guarding

4
Hazards

• Struck by a tool or machine
• Struck by materials acted on by tool or machine
• Caught in a machine or tool
• Repetitive motion by users of tool or machine
• Power source electrical
• Environmental noise, thermal, air contaminant

5
Injuries

• Cuts
• Abrasions
• Punctures
• Tears
• Crushing
• Fractures
• Flying particles

• Chemical exposure
• Falling objects
• Cumulative Trauma Injuries
• see next slide

6
Cumulative Trauma Injuries

• Trigger Finger
• Carpal Tunnel Syndrome
• Raynauds Syndrome
• DeQuervains Disease
• Bursitis / Tendonitis / Tenosynovitis /
  Epicondylitis
• Ganglion Cysts
• Rotator Cuff / Thoracic Outlet Syndrome

7
Machine Guarding

• Physically separate people/clothing from machine
  hazards
• Protect people from flying particles from
  operations or broken machine parts
• Enclosing noise and dust
• Interlocks
• Mechanical, electrical
• Standards
• 1914 First machine guard standards appeared
• ANSI B11 and B15 Series

8
Machine Guarding Principles

• Permanent
• prevent access (body parts and clothing) during
  operation
• prevent flying particles, enclosing dust and
  noise
• durable
• must not create a hazard
• do not interfere with operation
• coordinated with maintenance and changeover
  operations

9
Distance Guard

• See next four slides
• A physical model can be used in the field

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Types of Machine Motion

• Rotation
• Reciprocating / Transverse Motion
• In-Running Nip Points
• Cutting action
• Punching / shearing / bending

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