grinder safety applications in agriculture shops osha standard(s) 1 910.215 and 1926.303
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Grinder Safety Applications in Agriculture Shops OSHA Standard(s) 1 910.215 and 1926.303. Produced by Idaho State University Office of Workforce Training. - PowerPoint PPT PresentationTRANSCRIPT
Grinder Safety Applications in Grinder Safety Applications in Agriculture ShopsAgriculture Shops
OSHA Standard(s)OSHA Standard(s)1910.215 and 1926.3031910.215 and 1926.303
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Produced by Idaho State University Office of Workforce Training
“This material was produced under grant SH22228SH1 from the Occupational Safety and Health Administration, U.S. Department of
Labor. It does not necessarily reflect the views or policies of the U.S. Department of Labor, nor does mention of trade names, commercial products, or
organizations imply endorsement by the U.S. Government.”
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OSHA and AgricultureOSHA and Agriculture Not all farms fall under OSHA jurisdiction Who is exempt: Farms that only employ
immediate family members or farms with 10 or less employees (this exemption, however, does not apply if the operation has maintained a temporary labor camp within the last twelve months, OSHA directive CPL 02-00-51)
Additional state guidelines may apply
Repair shops, big or small Repair shops, big or small usually have grinders presentusually have grinders present
Farm equipment needs weekly, monthly, and annual services. Grinding may be a part of this.
Preoperational checks in an Ag Preoperational checks in an Ag repair settingrepair setting
What is wrong? What is wrong?
Grinding wheel is plugged with aluminum.
Space between wheel and pedestal is excessive.
Wheel needs to be changed. Clear plastic shield is unserviceable.
What to check for:What to check for:CFR 1926.303 (d)
Wheel must be rated at a higher RPM than the grinder is rated.
Perform ring test on replacement wheel. Distance between pedestal and wheel
cannot exceed 1/8” Wheel must be free of non-ferrous
metals (e.g., copper, lead, aluminum) Secure wheel with equal pressure,
washers Always unplug or de-energize grinder
Personal Protective Personal Protective EquipmentEquipment
Safety glasses CFR 1926.303 (c)(9) Clear or tinted face shield No loose clothing or hair Hearing protection
Start up proceduresStart up procedures
After completing preoperational checks . .
Stand off to the side of the grinder to start it up.
Let the wheel turn for approximately one minute.
Check wheel for balance and alignment. Turn off grinder if it is out of balance.
HazardsHazards
Entanglement Contact Fragmentation Sparks Debris Eye injury
Trueing/dressing the wheel Trueing/dressing the wheel Unplug grinder, set pedestal distance to
1/8”. Spin wheel by hand to identify high spots Select dressing tool that is in good
working order. Start up machine, standing off to the side. With PPE on, rest de-burring tool on
pedestal and gently begin trueing process Turn off grinder, re-evaluate wheel
Wheel dresserWheel dresser
Typical example and use of a wheel dresser
Why dress the wheel?Why dress the wheel?
Keeps pores clean that may be otherwise plugged. Ag applications cover all types of metals.
Clean pores cut better. Clogged pores will require more force,
thus more probability of damaging the stone or wheel. Injuries occur with more force.
Dressing a wheel will help it to rotate properly, less vibration from being out of balance.
Conduct ring testConduct ring testCFR 1910.215 (d)(1)
Ring test is used to determine grinder wheel soundness.
Hold new wheel on a dowel. Tap all four quadrants of the wheel. Listen for a distinct “ring” from the
wheel. A dull thud or dead sound means the
new wheel is defective.
Ring testRing test
Quadrant or sectors of the grinding wheel
General maintenanceGeneral maintenanceCFR 1926.303 (b)(1)
Inspect cords Make sure all guards are in place Look for evidence of misuse,
damage, or electrical issues Inspect grinder wheel: groove,
chunks missing, loose bolts/nuts, and balance of wheel
Preparation for welding, Preparation for welding, painting, or other repairspainting, or other repairs
Hand grinders are very useful when used correctly. Any issues with this scene?
Using a hand grinderUsing a hand grinder
Inspect tool for serviceability Is disk the right size, rating, and
condition? Inspect cord Make sure all guards are in place Check switches
Hand grinder safetyHand grinder safety Clear flammables from work area Wear safety glasses, face shield, and
hearing protection NO loose clothing Do not lock power switch in “on” position Set up screens to protect others and
equipment Do not bind grinder, or bear down too
hard
You never know where or when You never know where or when you will break downyou will break down
Many repairs can be made in the shop
Grinding techniquesGrinding techniques
Do not grind in areas or in positions where grinder will bind and “kick” back
Use a grinder for its intended use only Ease metal parts gently and gradually
into pedestal grinders Move material slowly across the face of
the wheel Do not cut grooves
Helpful hintsHelpful hints
Always use a wheel or disk rated at or above the RPM of the grinder
Keep disks or wheels stored in a safe, dry place
Avoid using disks or wheels that are damaged
Dress wheels as often as required
RisksRisks
Storage Handling Mounting Operator error Fire
EvaluationEvaluation
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