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Title:

Machine Guarding

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... the work pieces from being thrown out of the machine if they should become loose ... Abrasive Wheel Machinery ... All wheels shall be closely inspected and ... – PowerPoint PPT presentation

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Title: Machine Guarding


1
Machine Guarding
2
Objectives
  • Identify basic machinery terms
  • Identify common machines found within a campus
  • Identify hazards that occur in or on machinery
  • Select the appropriate OSHA Standard that applies
    to the hazard

3
Basic Machinery Terms
  • Drilling and Boring
  • Grinding
  • Milling
  • Turning
  • Punching and Forging
  • Planing and Shaping
  • Turning
  • Sawing

4
Requirements for Safeguards(29 CFR 1910.213)
  • Prevent contact
  • Protect from falling objects
  • Create no new hazards
  • Create no interference
  • Allow safe lubrication
  • Secure

5
General Machine Requirements(29 CFR 1910.212)
  • The point of operation that exposes an employee
    to injury shall be guarded
  • Machines designed for a fixed location shall be
    securely anchored to prevent walking or moving
  • Special hand tools for placing and removing
    material shall be such as to permit easy handling
    of material without the operator placing a hand
    in the danger zone
  • Fan blades less than seven (7) feet above the
    floor or working level, the blades shall be
    guarded and have openings no larger than one-half
    (1/2) inch

6
Training
  • A description identification of the hazards
    associated with particular machines
  • The safeguards themselves, how the provide
    protection and the hazards for which they are
    intended
  • How to use the safeguards and why
  • How and under what circumstances safeguards can
    be removed and by whom
  • What to do if a safeguard is damaged, missing or
    unable to provide adequate protection

7
Woodworking Machinery(29 CFR 1910.213)
  • All belts, pulleys, gears, shafts and moving
    parts shall be guarded
  • A mechanical or electrical power control shall be
    provided on each machine to make it possible for
    the operator to cut off the power from each
    machine without leaving their position at the
    point of operation

8
Woodworking Machinery
  • Belt sanding machines shall be provided with
    guards at each nip point where the sanding belt
    runs on to the pulley
  • Lathes used for turning long pieces of wood stock
    held between the two centers shall be equipped
    with long curved guards extending over the tops
    of the lathes in order to prevent the work pieces
    from being thrown out of the machine if they
    should become loose

9
Abrasive Wheel Machinery (29 CFR 1910.215)
  • The safety guard shall cover the spindle end,
    nut, and flange projections
  • Work rests shall be used to support the work.
    They shall be of rigid construction designed to
    be adjustable to compensate for wheel wear with
    the maximum opening of 1/8 inch to prevent the
    work from being jammed between the wheel and the
    rest, which may cause wheel breakage

10
Abrasive Wheel Machinery
  • The adjustable tongue or the end of the
    peripheral member at the top shall never exceed
    1/4 inch
  • All wheels shall be closely inspected and sounded
    by the user ( ring test) to make sure they have
    not been damaged . The spindle speed of the
    machine shall be checked before mounting of the
    wheel to be certain that it does not exceed the
    maximum operating speed marked on the wheel.

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