Ergonomics

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Ergonomics
Making the job fit the worker
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Ergonomics looks at

• Work station
• Tools
• Motions
• Physical condition
• Physical limitations
• Environment

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Musculoskeletal disorders

• Musculoskeletal disorders MSDs

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MSD symptoms

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

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Common MSDs

• Tendinitis
• Tenosynovitis
• Trigger finger
• Raynauds syndrome
• De Quervains disease
• Carpal tunnel syndrome

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Workplace risk factors

• Repetitive motions
• Fixed / awkward postures
• Vibration
• Force
• Twisting / bending
• Elevation of elbows
• Lifting

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Workplace risk factors

• Inappropriate tools
• Continuous contact
• Restricted clearance
• Improper seating/support
• Bad body mechanics
• Inadjustable equipment

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Identify risk factors

• Management/employee involvement
• Audit work stations
• Audit procedures

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Engineering Controls

• Preferred method
• Work station design
• Tool design
• Equipment design

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Work station design

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

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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

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Tool selection should minimize

• Awkward, bent grip
• Vibration
• Excessive grip strength
• Awkward positions to exert force
• Repetitive motions

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Administrative Controls

• Job rotation
• Shift length
• Overtime management
• Rest breaks
• Production rates

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Work practice controls

• Use proper techniques
• Avoid unnecessary steps
• Job training
• Exercise/ conditioning

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Medical Management

• Early reporting treatment
• Symptoms survey
• Medical treatment
• Recordkeeping

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Back disorders

• Sprains
• Strains
• Ruptured/slipped disks
• Muscle spasms

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Back pain factors

• Improper posture
• Poor physical condition
• Improper lifting

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Proper lifting

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

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Summary

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

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