ergonomics: preventing strains and sprains · - rsi (repetitive strain injury): $25,000+ - back...
TRANSCRIPT
![Page 1: Ergonomics: Preventing Strains and Sprains · - RSI (Repetitive Strain Injury): $25,000+ - Back injury: $40,000-80,000+ 13 ERGONOMIC RISK FACTORS. 14 ERGONOMIC RISK FACTORS • Ergonomics](https://reader034.vdocuments.us/reader034/viewer/2022052612/5f0d4bdd7e708231d439a4f5/html5/thumbnails/1.jpg)
Ergonomics:Preventing Strains and Sprains
![Page 3: Ergonomics: Preventing Strains and Sprains · - RSI (Repetitive Strain Injury): $25,000+ - Back injury: $40,000-80,000+ 13 ERGONOMIC RISK FACTORS. 14 ERGONOMIC RISK FACTORS • Ergonomics](https://reader034.vdocuments.us/reader034/viewer/2022052612/5f0d4bdd7e708231d439a4f5/html5/thumbnails/3.jpg)
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TRAINING OBJECTIVES
• Have an understanding of ergonomic principles• What are common ergonomic injuries• How to identify ergonomic risk factors• Understand basic ergonomic assessment tools• How to develop an implementation plan
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WHAT IS ERGONOMICS-DEFINITION
• Ergo = work• Nomos = law• “Designing the workstation to fit the worker rather than forcing the
worker to fit the workstation”
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WHAT IS ERGONOMICS-IMPORTANCE
By fitting the work tasks to the capabilities of most employees, employers can:
• Reduce or eliminate the risk factors that lead to musculoskeletal disorders (MSDs)
• Decrease injuries, illnesses, and workers’ compensation costs• Decrease absenteeism and turnover• Improve employees health outcomes• Increase employee morale and productivity• Make it easier for employees to do high-quality work
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INJURIES
• Trauma• Musculoskeletal• Nerve • Tendon• Cost
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INJURIES - TRAUMA
• Acute Trauma- Herniated disc- Torn rotator cuff
• Chronic Trauma- Repetitive motion- Static position
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INJURIES - TRAUMA
• How much trauma one body part can take• How fast a body part can heal• Trauma Bucket
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INJURIES - TYPES MSDS
• Commonly known as “soft tissue” injuries• Occur in ligaments, tendons, joints, muscles, and supportive structures
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INJURIES - NERVES
• Carpal Tunnel Syndrome• Causes: Repetitive motion, repeated vibration, extension of wrist
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INJURIES - SHOULDER
• Rotator Cuff Tendinitis/Bursitis• Causes: Repetitive overhead lifting, forceful pulling motions
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INJURIES - COSTS
• MSDs – Approximately a third of all work-related injuries • 380,600 cases
- Average 13 days away from work
• Average MSD cost:- RSI (Repetitive Strain Injury): $25,000+- Back injury: $40,000-80,000+
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ERGONOMIC RISK FACTORS
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ERGONOMIC RISK FACTORS
• Ergonomics “Fire Triangle”- Posture – Non-neutral positions- Force – Excessive weight, grip or pressure- Frequency – Lack of frequency or too high of frequency
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ERGONOMIC RISK FACTORS - POSTURE
• Positions of the body while performing work activities that deviate significantly from the neutral position- Wrist- Elbow/Lower Arm- Shoulder/Upper Arm- Neck - Back/Trunk
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ERGONOMIC RISK FACTORS - POSTURE WRIST
• Neutral wrist provides greatest grasping power
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ERGONOMIC RISK FACTORS - POSTURE WRIST
• Pen Grip Test Demonstration
Neutral Position Awkward Position
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ERGONOMIC RISK FACTORS - POSTURE ELBOW LOWER ARM
• Elbows at 90 degrees and near body
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ERGONOMIC RISK FACTORS - POSTURE SHOULDER/UPPER ARM
• Shoulders naturally level• Avoid hands behind and above shoulder• Avoid elbow behind back• Avoid hands crossing body midline
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ERGONOMIC RISK FACTORS - POSTURE NECK
• Head straight• Avoid leaning • Monitor neck angle
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ERGONOMIC RISK FACTORS - POSTURE BACK/TRUNK
• Avoid torso bending backwards or laterally• Avoid twisting
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ERGONOMIC RISK FACTORS - FORCE
• Weight of Object• Size/Shape of object• Location• Grip
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ERGONOMIC RISK FACTORS - FORCE LIFTING ABILITY AND LOCATION
• Consider how much object weighs• Consider distance away from body• Consider the capability of each worker• Items located at opposite end of workstation may require more force
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ERGONOMIC RISK FACTORS - SHAPE/SIZE OF OBJECT
• Odd-shaped objects will take more force to lift, carry, or move
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ERGONOMIC RISK FACTORS - GRIP
• Pinch Grip• Power Grip
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ERGONOMIC RISK FACTORS - REPETITION/FREQUENCY
• Posture held for more than one minute• Repeated action happens four times per minute • Two body postures per minute
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ERGONOMIC RISK FACTORS - STATIC POSTURE
• These types of exertions put increased loads or forces on the muscles and tendons, which contributes to fatigue
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ERGONOMIC RISK FACTORS - CONTACT STRESSORS
• Sharp edges• Ends of table• Edge of box or machine
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ERGONOMIC RISK FACTORS - ENVIRONMENTAL
• Temperature- Hot - blood flows to skin to get rid of accumulated heat - this results in less blood to
muscles and a reduction in work capacity- Cold - reduces circulation, skin temperature
• Lighting: Adverse levels can contribute to postural and eye strain, low levels and glare
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WHERE DO YOU BEGIN
• Workplace behavior
• Records
• Surveys
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WHERE DO YOU BEGIN - WORKPLACE BEHAVIOR
• Shaking and wringing hands• Constant shrugging shoulders• Craning of neck• Pads on tables, chairs, tools
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WHERE DO YOU BEGIN - SURVEYS
• Give surveys • Talk to floor workers• Talk to managers
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WHERE DO YOU BEGIN-RECORDS
• OSHA 300 Log• Near miss reports• Injury reports• First aid reports
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HOW DO I EVALUATE
• LiftRight App• BC Calculator• REBA/RULA assessments
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HOW DO I EVALUATE - LIFTRIGHT APP
• Lifting equation that take into account various variables to determine how much one can lift
• Google “LiftRight App”
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HOW DO I EVALUATE - BC CALCULATOR
• This calculator can be used to estimate the suggested maximum force that can be used during pushing and pulling, and the weight that can be carried
• https://www.worksafebc.com/en/resources/health-safety/interactive-tools/push-pull-carry-calculator?lang=en
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HOW DO I EVALUATE - REBA/RULA ASSESSMENT
• Rapid Entire Body Assessment (REBA) for full body activities- Loading a pallet- Moving/picking up product
• Rapid Upper Limb Assessment (RULA) when it is mainly upper body work- Assembly Line- Cutting Meat
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HOW DO I EVALUATE - REBA ASSESSMENT
• Evaluates and assigns a score for each of the following body regions: wrists, forearms, elbows, shoulders, neck, trunk, back, legs and knees
• After the data is collected and scored, each area is given a score from 1-7 on severity and MSD risk.
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HOW DO I EVALUATE - REBA ASSESSMENT
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HOW DO I EVALUATE - RULA ASSESSMENT
• Survey method to assess postures of neck and upper limb loading• Final risk assessment score combines arm/wrist risk with neck, trunk, leg risk • Final score magnitude (between 1 and 7) overall injury risk due to
musculoskeletal loading
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HOW DO I EVALUATE - RULA ASSESSMENT
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DEVELOPING AN IMPROVEMENT PLAN
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CORRECTIVE ACTIONS
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IMPLEMENTING CHANGE
• Don’t design for the average• Design for adjustability
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IMPLEMENTING CHANGE
• Employee involvement• Take any offered feedback• Inform employees of changes that are coming• Follow up 4-6 weeks later
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SUMMARY
• Have an understanding of ergonomic principles• What are common ergonomic injuries• How to identify ergonomic risk factors• Understand basic ergonomic assessment tools• How to develop an implementation plan
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QUESTIONS?
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C&B RISK MANAGEMENT CENTER
PATRICIA MACKEYAdministrative Assistant