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Ergonomic Assessment

Ergonomic Assessment. Warehouse: Shrink Wrapping Pallets. Dimensions of Pallet. Height- 82 ½ inches Width- 43 ½ inches Length- 49 inches Weight- 789lbs. Job Description. Three Stages 1: Shrinking the top of the pallet 2: Shrinking the middle of the pallet

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Ergonomic Assessment

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  1. Ergonomic Assessment Warehouse: Shrink Wrapping Pallets

  2. Dimensions of Pallet • Height- 82 ½ inches • Width- 43 ½ inches • Length- 49 inches • Weight- 789lbs

  3. Job Description • Three Stages • 1: Shrinking the top of the pallet • 2: Shrinking the middle of the pallet • 3: Shrinking the bottom of the pallet

  4. Stage 1

  5. Stage 2

  6. Stage 3

  7. Back • Stage 1 • Minor twisting (0-15°) • No bending • Stage 2 • Minor twisting (0-15°) • No bending • Stage 3 • Minor twisting (0-15°) • Bending (>15°)

  8. Head and Neck • Stage 1 • Bending backwards (0-15°) • Stage 2 • Upright and straight • Stage 3 • Bending forwards (0-15°)

  9. Arms • Stage 1 • Top elbow is out (>45°) • Arms extended over head (>45°) • Back elbow at side • Stage 2 • Top elbow is out (>45°) • Arms extended in front of body (0-45°) • Back elbow at side • Stage 3 • Lead elbow is out (>45°) • Arms extended in front of body (0-45°) • Back elbow at side

  10. Elbows • Stage 1 • Elbows out of position (<90°) • Stage 2 • Top elbow out of position (<90°) • Bottom elbow at 90° • Stage 3 • Elbows out of position (>90°)

  11. Wrists • Stage 1 • Top wrist- Ulnar deviated (>5°) • Bottom wrist- Extended (>10°) • Stage 2 • Top wrist- Ulnar deviated (>5°) • Bottom wrist- Neutral • Stage 3 • Top wrist- Extended (0-10°) • Ulnar deviated (>5°) • Bottom wrist- Neutral

  12. Standing • Stage 1 • Knees straight and not locked • Stage 2 • Knees straight and not locked • Stage 3 • Squatting

  13. Static/dynamic effort • Arms are in an static position for greater than 60 seconds • Higher heart rate • Higher energy consumption • Longer rest periods needed • Less efficient

  14. Static/dynamic effort • Will cause greater stress on joints and muscles • Fatigue sets in • Muscle tires faster • Causes weariness • Less oxygen to the muscle • Lactic acid builds up • Muscle can’t recover

  15. Risk Factors • Back and Neck- • Disc problems • Muscle strain • Arthrosis (joint degeneration) • Shoulders, Arms, Legs • Muscle spasms • Arthritis • Tendinitis • Arthrosis

  16. Recommended Solution • Invest in a automatic shrink wrapper. • Requires almost no effort or risk to the employee.

  17. Recommended Solution • When shrinking: • Keep elbows at sides and at 90° when possible • Keep wrists in neutral position • Keep back upright when in the squat position • Try not to keep arms in a static position

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