Ergonomic Ergonomic AssessmentAssessment

Warehouse: Shrink Wrapping Warehouse: Shrink Wrapping PalletsPallets

Dimensions of PalletDimensions of Pallet

►Height- 82 ½ inches Height- 82 ½ inches

►Width- 43 ½ inchesWidth- 43 ½ inches

►Length- 49 inchesLength- 49 inches

►Weight- 789lbsWeight- 789lbs

Job Description Job Description

► Three StagesThree Stages 1: Shrinking the top 1: Shrinking the top

of the palletof the pallet

2: Shrinking the 2: Shrinking the middle of the pallet middle of the pallet

3: Shrinking the 3: Shrinking the bottom of the palletbottom of the pallet

Stage 1Stage 1

Stage 2Stage 2

Stage 3Stage 3

BackBack

►Stage 1Stage 1 Minor twisting (0-15°)Minor twisting (0-15°) No bendingNo bending

►Stage 2Stage 2 Minor twisting (0-15°)Minor twisting (0-15°) No bendingNo bending

►Stage 3Stage 3 Minor twisting (0-15°)Minor twisting (0-15°) Bending (>15°)Bending (>15°)

Head and NeckHead and Neck

►Stage 1Stage 1 Bending backwards (0-15°)Bending backwards (0-15°)

►Stage 2Stage 2 Upright and straightUpright and straight

►Stage 3Stage 3 Bending forwards (0-15°)Bending forwards (0-15°)

ArmsArms

► Stage 1Stage 1 Top elbow is out (>45°) Top elbow is out (>45°) Arms extended over head (>45°)Arms extended over head (>45°) Back elbow at sideBack elbow at side

► Stage 2Stage 2 Top elbow is out (>45°)Top elbow is out (>45°) Arms extended in front of body (0-45°)Arms extended in front of body (0-45°) Back elbow at sideBack elbow at side

► Stage 3Stage 3 Lead elbow is out (>45°)Lead elbow is out (>45°) Arms extended in front of body (0-45°)Arms extended in front of body (0-45°) Back elbow at sideBack elbow at side

ElbowsElbows

►Stage 1Stage 1 Elbows out of position (<90°)Elbows out of position (<90°)

►Stage 2Stage 2 Top elbow out of position (<90°)Top elbow out of position (<90°) Bottom elbow at 90°Bottom elbow at 90°

►Stage 3Stage 3 Elbows out of position (>90°)Elbows out of position (>90°)

WristsWrists

► Stage 1Stage 1 Top wrist- Ulnar deviated (>5°)Top wrist- Ulnar deviated (>5°) Bottom wrist- Extended (>10°)Bottom wrist- Extended (>10°)

► Stage 2Stage 2 Top wrist- Ulnar deviated (>5°)Top wrist- Ulnar deviated (>5°) Bottom wrist- NeutralBottom wrist- Neutral

► Stage 3Stage 3 Top wrist- Extended (0-10°)Top wrist- Extended (0-10°)

►Ulnar deviated (>5°)Ulnar deviated (>5°) Bottom wrist- NeutralBottom wrist- Neutral

StandingStanding

►Stage 1Stage 1 Knees straight and not lockedKnees straight and not locked

►Stage 2Stage 2 Knees straight and not lockedKnees straight and not locked

►Stage 3Stage 3 SquattingSquatting

Static/dynamic effortStatic/dynamic effort

► Arms are in an static position for greater Arms are in an static position for greater than 60 secondsthan 60 seconds

Higher heart rateHigher heart rate

Higher energy consumptionHigher energy consumption

Longer rest periods neededLonger rest periods needed

Less efficientLess efficient

Static/dynamic effortStatic/dynamic effort

►Will cause greater stress on joints and Will cause greater stress on joints and musclesmuscles Fatigue sets inFatigue sets in

►Muscle tires fasterMuscle tires faster►Causes wearinessCauses weariness

Less oxygen to the muscleLess oxygen to the muscle►Lactic acid builds upLactic acid builds up►Muscle can’t recoverMuscle can’t recover

Risk FactorsRisk Factors

►Back and Neck- Back and Neck- Disc problemsDisc problems Muscle strainMuscle strain Arthrosis (joint degeneration)Arthrosis (joint degeneration)

►Shoulders, Arms, Legs Shoulders, Arms, Legs Muscle spasms Muscle spasms Arthritis Arthritis TendinitisTendinitis ArthrosisArthrosis

Recommended SolutionRecommended Solution

► Invest in a automatic Invest in a automatic shrink wrapper.shrink wrapper.

► Requires almost no Requires almost no effort or risk to the effort or risk to the employee.employee.

Recommended SolutionRecommended Solution

►When shrinking:When shrinking: Keep elbows at sides and at 90° when Keep elbows at sides and at 90° when

possiblepossible Keep wrists in neutral positionKeep wrists in neutral position Keep back upright when in the squat Keep back upright when in the squat

positionposition Try not to keep arms in a static position Try not to keep arms in a static position