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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


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