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Mechanical Hazard

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					OCCUPATIONAL SAFETY and HEALTH




     MECHANICAL HAZARD
             INTRODUCTION
A person may be injured at mechanical equipments
 through:
   i. Coming into contact with it, or being trapped
       between the machinery or any fixed structure
   ii. Being struck by, or becoming entangled in motion in
       the equipments / machineries
   iii.Being struck by parts of the tools / machineries
       ejected from it
   iv.Being struck by materials ejected from the machinery
       or tools
For power tools, selection & incorrect use is very
  important in percentage number of accidents
Materials handling equipments are very dangerous if not
 being managed or maintained properly
                                                        2
                  MACHINE HAZARD
 Can be found at the point of operation, the power
  transmission apparatus or at the area of transverse
  motion.
TYPES OF GUARDS
i. Fixed Guards
   •    A permanent part of the machine
   •    Usually made of sheet metal, screen,
        bars or other material which will
        withstand the anticipated impact
   •    Preferred type of guard.


ii. Interlocked Guard
    •    Usually connected to a mechanism that will cut off the
         power automatically
    •    Could use electrical, mechanical or hydraulic systems
    •    Should rely on a manual reset system
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 Adjustable Guard
   •   Very flexible to accommodate
       various types of stock.
   •   Manually adjusted

 Self-Adjusting
   •   The opening is determined by
       the movement of the stock
       through the guard.
   •   Does not always provide
       maximum protection.




                                      4
FATALITIES
 Many fatalities have resulted from
  employees getting caught in rotating shafts
  such as well boring drills & lathes.



UNSAFE CONDITIONS




 Transmission sources
 should be guarded                     Unguarded saw blade   5
      POWER-DRIVEN MACHINES’ GUARDING




                                     Using a wire guard to stop the
Using a gate system to keep hands out
                                     machine when a worker gets
of the point of operation area.
                                     too close.
The operator must push both     This cable will stop the
buttons at the top of the       machine when it is pulled.
machine to insure that his
hands are not in the point of
operation area
The tripod type bar on top    This safety bar will stop the
of this machine can be        machine if the worker gets too
grabbed by a worker to stop   close to the operation area.
the machine.
a blade guard anti kickback      This worker is protected from
device as a retracting device to the moving blade by an
automatically bring the saw back adjustable guard.
into position
Moving wheels are    A shield of safety glass prevents
guarded with cover   sparks and particles from
plates.              striking the worker.
The operator must press    This operate has wrist cuffs
both of the control        attached to her arms to keep her
                           from putting them in harms way.
buttons at the same time
to operate this press.
System uses an automatic device to   Machine ejects the finished
push the product out of the die.     product automatically.
 The top clearance on a bench        Robots can be deadly.
  grinder should not exceed 1/4       Establish a system to keep
  inch.                                humans from getting into the
 Bench Grinders require a work        robots work area.
  rest with a maximum clearance       Maintenance workers must use
  of 1/8 inch to insure that the       a lockout system.
  work does not get drawn into the
  grinding wheel.
             Power Tool Hazards
 All hazards involved in the use of power
  tools can be prevented by following five
  basic safety rules:
   •   Keep all tools in good condition
       with regular maintenance.
   •   Use the right tool for the job.
   •   Examine each tool for damage
       before use.
   •   Operate according to the
       manufacturer's instructions.
   •   Provide and use the proper
       protective equipment.




                                             14
   FORKLIFT SAFETY
 Forklifts are very useful for moving raw materials, tools and
  equipment in many industries.
 These accidents result from:
       •   Lack of operator training
       •   Poor maintenance
       •   No safe systems of work.

OPERATORS
 Selection of operators
 Physical and mental fitness
 Training
   Basic, job specific & familiarization
 Authorization to operate
   •   Written permission
   •   Driver competency – Cert. & continuous assessment
   •   Lockable ignition & key holder
        MAINTENANCE
  Must do daily checking on system & main components
 System :                       Components :
    •   Hydraulics                 •   Tyre pressure
    •   Brakes                     •   Brakes / hand break
    •   Battery                    •   Horn
    •   Lights                     •   Lights / beacon
    •   Steering                   •   Fuel

SYSTEM OF WORKS
 DO NOT
   •    Pick up a load if someone is standing close
   •    Allow people to walk underneath the load
   •    Try to pick up an unsuitable load
   •    Leave a lift truck unattended with the engine running
   •    Carry passengers
   •    Operate with the load raised except at creep speed
   •    Drive forward is visibility is impaired by a load
 DO’S
  •   Only issue keys to authorized drivers
  •   On completion of work, park lift truck in
      designated area
  •   Be careful with pedestrians / obey site rules /
      speed limits
  •   Sound horn at potential danger spots
  •   Stop before entering building, sound horn then
      proceed
  •   Avoid violent breaking
  •   Always travel with the forks roughly 150 mm
      above ground level
  •   Travel slowly down slopes with the fork facing
      uphill
  •   Before you raise a load check over head for
      obstructions
THANK YOU



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posted:12/16/2010
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