Transcript Band saw safety - Osha Training Online

Band saw safety
WAC 296-806-48006
Objectives
We will be reviewing parts of WISHA rules
on Machine Safeguarding – WAC 296-806.
You’ll learn:
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hazards of operating a band saw
general machine safety rules
rules specific to saws and
rules specific to band saws
Common Hazards
Safety Hazards of Band Saws
• Point of operation - Contact with the moving blade may occur.
• In-running nip points - Clothing, hair, or hands may be caught by
and pulled into feed rolls or the pulley mechanism.
• Kickbacks - Stock caught by the blade may be thrown back at the
operator.
• Flying Chips - Wood chips and splinters may be thrown by the
cutting action of the blade.
• Struck by – Broken saw blades may fly out and strike employee.
The operator is required to hand-feed and manipulate the stock against the
blade saw along a predetermined line. The operator must also keep the
stock flat on the work table and exert the proper cutting pressure. This
machine is usually considered a manual feed tool.
General machine safety
This section contains the general requirements for equipment
including:
• Securing machinery - Secure machines designed to
stay in one place.
• Slipping hazards - Protect employees from
slipping hazards.
• Arrange work areas to avoid creating hazards
– Make sure
there is adequate space around machinery so employees can clean
and handle material without interference from other workers or
machine, do not have to stand in the way of passing traffic and
bring in and remove materials safely.
General machine safety
• Operating controls
– must be provided
on each machine that stop the machine
and that can be reached by the operator
without leaving the operator’s position.
Also make sure that the operator can
easily reach all machine controls without
reaching into a hazard area of the
machine.
• Unintentional machine operation Protect employees by ensuring that footoperated controls are located or guarded
from being unintentionally moved to the
“on” position. Also make sure that
machines will not automatically restart
when power is restored after a power
failure (if restarting would create a hazard
for employees).
General machine safety
• Emergency stop controls – if required,
must meet all of these criteria:
• Be red in color
• Be easily reachable from the operator’s
normal work position
• Be kept in good working order
• Have to be manually reset before a
machine can be restarted
• Control machine vibration – prevent
excessive machine vibration
• Prevent overspeed conditions – Operate
tools and equipment within their rated speed.
General machine safety
• Hand feeding and retrieval tools
– Make sure hand feeding and
retrieval tools meet the following requirements:
• are suitable for the work to be done
• don’t create a hazard when used
• are of a size and shape that will keep the operator’s hands
outside the hazardous area
• are constructed so that they won’t shatter if they come in
contact with the machine tool
NOTE: Tools such as push sticks or push blocks can not be used instead of
required safeguarding unless a specific machine requirement allows it.
General machine safety
• Adjusting or repairing machinery – Make sure power-driven
machinery is completely stopped before either making adjustments
or repairs or removing material or refuse from the machine
• Power transmission parts - inspect them and keep them in
good
condition
• Protect employees lubricating moving machinery –
by providing tools such as oil can or grease guns to keep
employees’ hands out of hazardous areas and by requiring
employees to wear closely fitted clothing.
General requirements for all saws
Applies to all materials and to all employers.
No longer separated into wood and metal.
Now it also applies to plastics, composites and other materials.
General requirements for all saws
• Make sure people who sharpen or tension saw blades
have demonstrated skill in this area
• Make sure saws are safe to use - This means removing
from service a saw that has any of the following problems:
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Cracked
Dull
Badly set
Improperly filed
Improperly tensioned
• Clean any saw where gum has begun to stick on the sides
• Eliminate unintended fence and table movement during
use
• Keep hinged tables and fences firmly secured and in true
alignment for all positions
Specific to band saws
WAC 296-806-48042
Fully enclose band saw wheels
with wheel guards that meet
both of the following
requirements:
– The outside periphery of the
wheel enclosure is solid
and
– The front and back of the
wheels are enclosed by solid
material, wire mesh, or
perforated metal.
Specific to Bandsaws
Enclose or guard all portions of the
blade except for the working portion
of the blade between the guide rolls
and the table.
Make sure the guard for the portion of
the blade between the sliding guide
and the wheel guard meets these
requirements:
– Protects the front and outer side of
the blade
– Is self-adjusting to move with the
guide
– Adjusts so the gap between the
guide rolls and stock is as small as is
practical.
(continued)
WAC 296-806-48042
Sources of Help
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WAC 296-806
WAC 296-803, Lockout/Tagout
OSHA Machine Guarding eTool
American National Standards
Institute (ANSI)
• National Institute for Occupational
Safety & Health (NIOSH)
• L&I Machine Safeguarding Data Bank
(available 02/2005)
• www.lni.wa.gov/Safety
• Dept. of Labor & Industries
• 1-800-4BE-SAFE
Web addresses
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www.lni.wa.gov/Safety
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www.IdeaBanks.lni.wa.gov
The Machine Safeguarding Ideas Bank was launched in
February 2005. It contains ideas to help employers find
different ways of safeguarding their equipment.
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www.osha.gov
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www.ansi.org
Thank you for taking the time
interest to learn about safety and
health and how to prevent injuries
and illnesses.