ergonomic vibration l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
ERGONOMIC VIBRATION PowerPoint Presentation
Download Presentation
ERGONOMIC VIBRATION

Loading in 2 Seconds...

play fullscreen
1 / 18

ERGONOMIC VIBRATION - PowerPoint PPT Presentation


  • 403 Views
  • Uploaded on

ERGONOMIC VIBRATION . WHO’S AT RISK?. ANYONE WHO ABSORBS MACHINE VIBRATION THROUGH THEIR HANDS AND ARMS WHILE WORKING A FAST-MOVING HAND TOOL -- OR THROUGH THE BUTTOCKS AND THE SOLES OF THE FEET WHILE RIDING IN OR STANDING NEAR VIBRATING, HEAVY MACHINERY-- RUNS THE RISK. WHAT IS VIBRATION?.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'ERGONOMIC VIBRATION' - ostinmannual


Download Now An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
who s at risk
WHO’S AT RISK?
  • ANYONE WHO ABSORBS MACHINE VIBRATION THROUGH THEIR HANDS AND ARMS WHILE WORKING A FAST-MOVING HAND TOOL --
  • OR THROUGH THE BUTTOCKS AND THE SOLES OF THE FEET WHILE RIDING IN OR STANDING NEAR VIBRATING, HEAVY MACHINERY--
  • RUNS THE RISK.
what is vibration
WHAT IS VIBRATION?
  • VASOSPASTIC, NEUROMUSCULAR, ARTHRITIC DISORDERS OF THE HANDS AND UPPER LIMBS
  • COMPOSITE OF VIBRATION INDUCED SIGNS AND SYMPTOMS (e.g. NUMBNESS, TINGLING OF THE FINGERS, EPISODIC BLANCHING OF THE FINGERS, PAIN, REDUCED GRIP STRENGTH AND DEXTERITY
  • RAYNAUD’S SYNDROME, WHITE FINGER
symptoms of vibration syndrome
SYMPTOMS OF VIBRATION SYNDROME?
  • DISCOMFORT FROM COLD
  • TINGLING, NUMBING
  • BLANCHING FINGERS
  • PAIN
how many exposed
HOW MANY EXPOSED?
  • APPROXIMATELY 1.2 MILLION EXPOSED
  • 50 -- 60 % OF WORKER POPULATION HAVE SYMPTOMS
types
TYPES?
  • WHOLE BODY VIBRATION
  • SEGMENTAL VIBRATION
definition
DEFINITION?
  • A CYCLE OF SPECIFIC ACTIVITY BACK-FORTH, UP AND DOWN RESULTING FROM REVERSAL OF ENERGY
  • FREQUENCIES OF 100 HZ OR HIGHER ARE ABSORBED BY THE HANDS AND WRISTS
  • FREQUENCIES UNDER 100 HZ ARE ABSORBED BY THE UPPER LIMB JOINTS
response depends on
RESPONSE DEPENDS ON:
  • FREQUENCY OF VIBRATION
  • AMPLITUDE OF VIBRATION
  • TIME HISTORY OF VIBRATION EXPOSURE
  • DIRECTION OF VIBRATION
  • POINT OF APPLICATION OF VIBRATION
  • HOW MUCH VIBRATION IS TRANSMITTED
  • AFFECT OF CLOTHING AND EQUIPMENT
  • BODY SIZE (HEIGHT AND WEIGHT)
  • BODY POSTURE/ BODY TENSION
magnitude is influenced by
MAGNITUDE IS INFLUENCED BY:
  • TYPE, WEIGHT, AND CONDITION OF TOOL
  • ACCELERATION AND FREQUENCY PRODUCED BY TOOL
    • TOOL TYPE, ENVIRONMENTAL, ANTI-VIBRATION MATERIAL
    • OPERATING SPEED, ERGONOMICS OF USE
  • GRIPPING FORCES
  • ORIENTATION AND POSTURE OF THE HANDS, ARMS, AND BODY DURING WORK
  • PARTS OF HANDS IN DIRECT CONTACT WITH THE VIBRATING SURFACE
tools most commonly associated
TOOLS MOST COMMONLY ASSOCIATED:
  • POWERED HAMMERS
  • CHISELS, CHAIN SAWS
  • SANDERS, GRINDERS, RIVETERS
  • BREAKERS, DRILLS, COMPACTORS
  • SHARPENERS, SHAPERS
control strategies
CONTROL STRATEGIES:
  • ENGINEERING AND WORK PRACTICES
  • ANTI-VIBRATION CLOTHING, EQUIPMENT, AND TRAINING
  • GOALS:
    • REDUCE THE INTENSITY
    • REDUCE THE EXPOSURE DURATION
    • IDENTIFY THE EARLY SIGNS AND SYMPTOMS
engineering controls
ENGINEERING CONTROLS:
  • REDUCTION AT SOURCE
  • REDUCTION OF TRANSMISSION
  • PROCESS MODIFICATION
reduction at source
REDUCTION AT SOURCE
  • REDUCE SPEED OF TOOL
  • REDUCE WEIGHT AND POWER NEEDED TO DRIVE THE TOOL
  • CHANGE TYPE OF TOOL
    • E.G. RECIPROCATING ENGINE TO ROTARY OR ELECTRIC MOTOR
  • TOOL MAINTENANCE
  • MOUNT EQUIPMENT ON SPRINGS OR COMPRESSION PADS
  • USE MATERIALS THAT GENERATE LESS VIBRATION
reduction at transmission
REDUCTION AT TRANSMISSION
  • PROVIDE CUSHION TO ACT AS A VIBRATION ISOLATER IN A SEATED TASK
  • PROVIDE ANTI-FATIGUE MATS FOR STANDING OPERATION
  • DESIGN TOOLS TO REDUCE VIBRATION TRANSMITTED TO THE HANDS,
  • COUNTERWEIGHT TOOLS TO MINIMIZE GRIPPING REQUIRED TO OPERATE THEM
    • DAMPENING MATERIALS AND GLOVES ARE USUALLY MORE EFFECTIVE FOR HIGHER FREQUENCIES.
process modification
PROCESS MODIFICATION
  • CHANGES IN ANY ASPECT OF PROCESS TO ELIMINATE NEED FOR VIBRATING TOOLS OR EQUIPMENT
  • USING MECHANICAL AIDS (CHUCKS, CLAMPS) TO HOLD MATERIAL
    • REDUCES TIME OR INTENSITY OF EXPOSURE
  • ROBOTICS
  • AUTOMATION
  • SUBSTITUTION OF MATERIALS
    • PLASTICS FOR HARD METAL
work modification approaches
WORK MODIFICATION APPROACHES
  • LIMIT NUMBERS OF HOURS
  • REDUCE NUMBER OF DAYS PER WEEK
  • ROTATE BETWEEN VIBRATING AND NON-VIBRATING TOOL TASKS
  • SCHEDULE MAINTENANCE BREAKS
work practices
WORK PRACTICES
  • LENGTH OF WORK DAY
  • JOB ROTATION
  • SELECT LOW VIBRATION TOOLS
  • DESIGN WORK TASK AND WORKPLACE ERGONOMICALLY
  • REDUCE GRIP FORCE APPLIED
  • REDUCE FORCE APPLIED
  • RESTRICT USE OF PIECE WORK AND INCENTIVE PAY
  • ERGONOMIC WORK POSTURES
administrative controls
ADMINISTRATIVE CONTROLS
  • PPE
  • REDUCE TRANSMISSION OF VIBRATING ENERGY TO THE HAND
  • PROTECT AGAINST EXPOSURE TO COLD AND TRAUMA
  • TRAINING
    • SOURCE OF VIBRATION
    • ADVERSE HEALTH AND SAFETY EFFECTS
    • EARLY SIGNS AND SYMPTOMS
    • USE AND AVAILABILITY OF VIBRATION PROTECTIVE CLOTHING
    • ANTI-VIBRATION DEVICES
    • VALUE OF GOOD TOOL MAINTENANCE
    • WORK PRACTICE PROCEDURES