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Ergonomics. Making the job fit the worker. Ergonomics looks at:. Work station Tools Motions Physical condition Physical limitations Environment. 1. Musculoskeletal disorders. Musculoskeletal disorders = MSDs. 2a. MSD symptoms. Dull, aching sensation Discomfort with movements

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ergonomics

Ergonomics

Making the job fit the worker

ergonomics looks at
Ergonomics looks at:
  • Work station
  • Tools
  • Motions
  • Physical condition
  • Physical limitations
  • Environment

1

musculoskeletal disorders
Musculoskeletal disorders
  • Musculoskeletal disorders = MSDs

2a

msd symptoms
MSD symptoms
  • Dull, aching sensation
  • Discomfort with movements
  • Tenderness to the touch
  • Burning sensation
  • Pain
  • Tingling
  • Cramping
  • Stiffness

2b

common msds
Common MSDs
  • Tendinitis
  • Tenosynovitis
  • Trigger finger
  • Raynaud’s syndrome
  • De Quervain’s disease
  • Carpal tunnel syndrome

2c

workplace risk factors
Workplace risk factors
  • Repetitive motions
  • Fixed / awkward postures
  • Vibration
  • Force
  • Twisting / bending
  • Elevation of elbows
  • Lifting

3a

workplace risk factors1
Workplace risk factors
  • Inappropriate tools
  • Continuous contact
  • Restricted clearance
  • Improper seating/support
  • Bad body mechanics
  • Inadjustable equipment

3b

identify risk factors
Identify risk factors
  • Management/employee involvement
  • Audit work stations
  • Audit procedures

4

engineering controls
Engineering Controls
  • Preferred method
  • Work station design
  • Tool design
  • Equipment design

5

work station design
Work station design

Provide adequate:

  • Work space
  • Work height
  • Support
  • Storage space
  • Machine controls

6

work station redesign
Work station redesign
  • Reduce static loading
  • Raise / lower working height
  • Remove hard / sharp edges
  • Provide mechanical advantages
  • Insulate heat / cold
  • Provide seating / support
  • Improve material orientation
  • Improve layout

7

tool selection should minimize
Tool selection should minimize:
  • Awkward, bent grip
  • Vibration
  • Excessive grip strength
  • Awkward positions to exert force
  • Repetitive motions

8

administrative controls
Administrative Controls
  • Job rotation
  • Shift length
  • Overtime management
  • Rest breaks
  • Production rates

9

work practice controls
Work practice controls
  • Use proper techniques
  • Avoid unnecessary steps
  • Job training
  • Exercise/ conditioning

10

medical management
Medical Management
  • Early reporting & treatment
  • Symptoms survey
  • Medical treatment
  • Recordkeeping

11

back disorders
Back disorders
  • Sprains
  • Strains
  • Ruptured/slipped disks
  • Muscle spasms

12a

back pain factors
Back pain factors
  • Improper posture
  • Poor physical condition
  • Improper lifting

12b

proper lifting
Proper lifting
  • Size up the load
  • Bend your knees
  • Do not twist
  • Clear path
  • Lower slowly
  • Push carts/dollies

12c

summary
Summary
  • Define ergonomics
  • MSDs
  • Risk factors
  • Controls
  • Medical management
  • Proper lifting

13