INDUSTRIAL ERGONOMICS.pptx-MCN 401 -MODULE 3

MCN 401 -INDUSTRIAL ERGONOMICS

1. Ergonomics in Construction Safety: Hazards, MSDs & CTDs MODULE 3-MCN 401 KTU CO3:Explain different issues in constructon industries(Cognitive knowledge level :Understand)1 VINAY B NSSCE 1

2. Introduction to Ergonomics Ergonomics = science of designing work to fit the worker Focuses on human capabilities and limitations Goal: improve comfort, efficiency, and safety Critical in construction due to heavy labor and varied tasks VINAY B NSSCE 2

3. Importance in Construction Safety Reduces risk of injuries and accidents Improves productivity and quality of work Minimizes absenteeism and compensation costs Enhances worker well-being and job satisfaction VINAY B NSSCE 3

4. Unique Challenges in Construction Dynamic & ever-changing work environment Heavy manual material handling Awkward postures (overhead, kneeling, bending) Use of vibrating tools and repetitive tasks Outdoor conditions: heat, cold, uneven surface VINAY B NSSCE 4

5. Ergonomic Hazards in Construction Forceful exertions : lifting, carrying, pushing, pulling Repetitive motions : hammering, drilling, screwing Awkward postures : working overhead, crouching Contact stress : kneeling on hard surfaces Vibration : hand tools, heavy machinery Environmental factors : temperature extremes, lighting VINAY B NSSCE 5

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7. Risk Factors for Ergonomic Injuries High physical demands Insufficient rest breaks Poorly designed tools or workstations Long work hours and overtime Lack of training or awareness VINAY B NSSCE 7

8. Musculoskeletal Disorders (MSDs) Injuries/disorders of muscles, tendons, ligaments, nerves Develop gradually from repeated strain Not caused by a single traumatic event Major occupational health issue worldwide VINAY B NSSCE 8

9. Common MSDs in Construction Low back pain and lumbar strain Shoulder tendinitis and rotator cuff injuries Carpal tunnel syndrome (wrist/hand) Knee bursitis Epicondylitis (tennis/golfer’s elbow) VINAY B NSSCE 9

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11. Cumulative Trauma Disorders (CTDs) Result from repetitive micro-traumas over time Similar to MSDs but emphasize repetitive stress Develop when recovery time is inadequate Examples: Tendinitis, Tenosynovitis, Nerve compression syndromes VINAY B NSSCE 11

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13. Early Signs & Symptoms Pain, aching, or burning sensation Tingling or numbness in limbs Reduced range of motion Decreased grip strength Symptoms worsen during or after work VINAY B NSSCE 13

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15. Impact on Workers & Industry Lost workdays and reduced productivity Increased medical costs & insurance premiums Higher employee turnover Potential for long-term disability Reduced morale and job satisfaction VINAY B NSSCE 15

16. Ergonomic Assessment Methods Job Safety Analysis (JSA) Rapid Entire Body Assessment (REBA) Workstation & tool design evaluation Worker feedback & observation VINAY B NSSCE 16

17. Prevention Strategies Redesign tasks to minimize force and awkward posture Use mechanical aids (hoists, lifts, dollies) Rotate jobs to limit repetition Provide adjustable tools and equipment Implement micro-breaks and stretching programs VINAY B NSSCE 17

18. Training & Worker Involvement Educate workers on safe lifting and handling Encourage reporting of early symptoms Promote stretching and warm-up routines Involve workers in hazard identification VINAY B NSSCE 18

19. Role of Management & Policy Commitment to ergonomic safety programs Regular inspections and risk assessments Encourage use of personal protective equipment (PPE) Integrate ergonomics into procurement and planning VINAY B NSSCE 19

20. Conclusion & Key Takeaways Ergonomics is vital for construction safety and productivity Early identification of ergonomic hazards prevents MSDs/CTDs Worker training + engineering controls = long-term benefits VINAY B NSSCE 20