Ergonomics Making the job fit the worker Ergonomics

Ergonomics Making the job fit the worker

Ergonomics looks at: v Work station v Tools v Motions v Physical condition v Physical limitations v Environment 1

Musculoskeletal disorders v Musculoskeletal disorders = MSDs 2 a

MSD symptoms v Dull, aching sensation v Discomfort with movements v Tenderness to the touch v Burning sensation v Pain v Tingling v Cramping v Stiffness 2 b

Common MSDs v Tendinitis v Tenosynovitis v Trigger finger v Raynaud’s v De syndrome Quervain’s disease v Carpal tunnel syndrome 2 c

Workplace risk factors v Repetitive motions v Fixed / awkward postures v Vibration v Force v Twisting / bending v Elevation of elbows v Lifting 3 a

Workplace risk factors v Inappropriate v Continuous v Restricted v Improper v Bad tools contact clearance seating/support body mechanics v Inadjustable equipment 3 b

Identify risk factors v Management/employee involvement v Audit work stations v Audit procedures 4

Engineering Controls v Preferred v Work v Tool method station design v Equipment design 5

Work station design Provide adequate: v Work space v Work height v Support v Storage space v Machine controls 6

Work station redesign v Reduce static loading v Raise / lower working height v Remove hard / sharp edges v Provide mechanical advantages v Insulate heat / cold v Provide seating / support v Improve material orientation v Improve layout 7

Tool selection should minimize: v Awkward, bent grip v Vibration v Excessive grip strength v Awkward positions to exert force v Repetitive motions 8

Administrative Controls v Job rotation v Shift length v Overtime management v Rest breaks v Production rates 9

Work practice controls v Use proper techniques v Avoid unnecessary steps v Job training v Exercise/ conditioning 10

Medical Management v Early reporting & treatment v Symptoms v Medical survey treatment v Recordkeeping 11

Back disorders v Sprains v Strains v Ruptured/ slipped disks v Muscle spasms 12 a

Back pain factors v Improper v Poor posture physical condition v Improper lifting 12 b

Proper lifting v Size up the load v Bend v Do your knees not twist v Clear path v Lower v Push slowly carts/dollies 12 c

Summary v Define ergonomics v MSDs v Risk factors v Controls v Medical v Proper management lifting 13