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Ergonomics
ERGONOMICS -
The study of the design of work in
relation to the physiological and
psychological capabilities of people
(matching the work place to the worker.)
 Injuries:
– Those disorders that occur due to a one-
time event such as a cut, crush or fall.
 Illnesses:
– Those disorders related to repeated
exposure to various substances, hazards,
or environmental conditions.
Two Types of Work
Place Disorders
Ergonomic Injuries
 CUMULATIVE TRAUMA DISORDERS
(CTDS) are health disorders arising
from repeated biomechanical stress.
 CTD involves damage to the tendons,
tendon sheaths, related bones,
muscles, and nerves of:
– Hands, wrists, elbows, shoulders, neck,
back.
Frequently Occurring
Disorders:
 Carpal tunnel syndrome
 Tendonitis
 Tenosynovitis (inflammation of Tendon
sheath)
 Synovitis (inflammation of the lubricating
fluid of the joints)
 Stenosing tenosynovitis of the fingers
(inflammation of tendon sheath)
 Low back pain
Indicators/symptoms
 Trends in accidents
and injuries
 Incidents of CTD
 Absenteeism
 High turnover rate
 Working conditions
noted by people
with disabilities
 Complaints about
musculoskeletal pain
 High overtime and
increased work rate
 Manual material
handling/repetitive
motion task
 Poor product quality
Administrative Controls
 Controls such as:
– Rotating personnel to jobs with dissimilar
physical requirements
– Establishing work/rest schedules
– Training personnel to use appropriate
work methods when engineering controls
are not feasible
Engineering Techniques
 Engineering techniques are the preferred
mechanism for controlling ergonomic
hazards. This may entail redesigning the
work station, work methods, and tools to
reduce the demands of the job, such as
exertion, repetition, and awkward positions.
Work Station Design
Workstations shall be easily
adjustable to accommodate the
worker performing the task
Training
• Elements of training:
• Ergonomics definition and concepts
• Ctd and backinjury prevention
• Varieties of ctd, causes, symptoms, prevention
and treatment
• Ergonomic of hand tools
• Equipment design, adjustability and layout
• Proper maintenance of facilities, equipment and
tools as techniques to minimize ergonomic stress
• Hazard identification and job analysis
• Implementation of training
• Back injury prevention training
Back Injury Training
 Shall include:
– Anatomy and physiology to explain
how the back works
– Biomechanics of lifting
– Weight control
– How to avoid back injuries
– Physical fitness
Supervisors:
 Require training to enable them to
recognize hazardous work practices
and symptoms of ctd’s
 Back injury prevention training
including benefits of physical fitness,
health education and lifestyle
modification in reducing back injuries

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Ergonomics_5.ppt

  • 1. Ergonomics ERGONOMICS - The study of the design of work in relation to the physiological and psychological capabilities of people (matching the work place to the worker.)
  • 2.  Injuries: – Those disorders that occur due to a one- time event such as a cut, crush or fall.  Illnesses: – Those disorders related to repeated exposure to various substances, hazards, or environmental conditions. Two Types of Work Place Disorders
  • 3. Ergonomic Injuries  CUMULATIVE TRAUMA DISORDERS (CTDS) are health disorders arising from repeated biomechanical stress.  CTD involves damage to the tendons, tendon sheaths, related bones, muscles, and nerves of: – Hands, wrists, elbows, shoulders, neck, back.
  • 4. Frequently Occurring Disorders:  Carpal tunnel syndrome  Tendonitis  Tenosynovitis (inflammation of Tendon sheath)  Synovitis (inflammation of the lubricating fluid of the joints)  Stenosing tenosynovitis of the fingers (inflammation of tendon sheath)  Low back pain
  • 5. Indicators/symptoms  Trends in accidents and injuries  Incidents of CTD  Absenteeism  High turnover rate  Working conditions noted by people with disabilities  Complaints about musculoskeletal pain  High overtime and increased work rate  Manual material handling/repetitive motion task  Poor product quality
  • 6. Administrative Controls  Controls such as: – Rotating personnel to jobs with dissimilar physical requirements – Establishing work/rest schedules – Training personnel to use appropriate work methods when engineering controls are not feasible
  • 7. Engineering Techniques  Engineering techniques are the preferred mechanism for controlling ergonomic hazards. This may entail redesigning the work station, work methods, and tools to reduce the demands of the job, such as exertion, repetition, and awkward positions.
  • 8. Work Station Design Workstations shall be easily adjustable to accommodate the worker performing the task
  • 9. Training • Elements of training: • Ergonomics definition and concepts • Ctd and backinjury prevention • Varieties of ctd, causes, symptoms, prevention and treatment • Ergonomic of hand tools • Equipment design, adjustability and layout • Proper maintenance of facilities, equipment and tools as techniques to minimize ergonomic stress • Hazard identification and job analysis • Implementation of training • Back injury prevention training
  • 10. Back Injury Training  Shall include: – Anatomy and physiology to explain how the back works – Biomechanics of lifting – Weight control – How to avoid back injuries – Physical fitness
  • 11. Supervisors:  Require training to enable them to recognize hazardous work practices and symptoms of ctd’s  Back injury prevention training including benefits of physical fitness, health education and lifestyle modification in reducing back injuries