Will You Survive the &#;Daily Grind&#;? How familiar are you with abrasive wheel grinders and their safe operation? Take this quiz from MANCOMM and find out.
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Will You Survive the &#;Daily Grind&#;? How familiar are you with abrasive wheel grinders and their safe operation? Take this quiz and find out.
A worker steps up to an abrasive wheel grinder and places a piece of metal against the wheel&#;s spinning surface. But because the machine was not adjusted correctly, the metal catches in the grinder. A split-second later the grinding wheel explodes, sending stony chunks, as deadly as shrapnel, shooting through the shop. The worker drops lifeless to the floor.
Tragic scenarios like that have been known to happen in workplaces across the country. An Occupational Safety and Health Administration (OSHA) examination of 27 grinder wheel accidents in an eight-year period revealed that 26 percent of those accidents resulted in employee deaths.
&#;Because abrasive wheel grinders are everyday equipment in workplaces nationwide, many workers become complacent about their hazards,&#; says Benjamin W. Mangan, founder and president of MANCOMM (Davenport, IA), a firm that develops and publishes regulatory compliance products. &#;Improper use of a grinding wheel, or the use of one that is defective or damaged, can cause the wheel to break up. And those flying fragments can be deadly.&#;
To help workers stay safe, MANCOMM developed and released the Grinder Safety Training CD that can help workers to improve safety and minimize risk by focusing on a personal protection system for pedestal and bench grinders. Topics covered include personal protective equipment, grinder and grinding wheel RPM compatibility, ring tests, grinding wheel installation, guard adjustment, and aluminum oxide grinding wheels.
This CD is the first release in a new Safety Interactive Training Experience (SITE) product line that use multimedia presentations which actively engage trainees in user-based interactions.
How familiar are you with abrasive wheel grinders and their safe operation? Take this quiz and find out. These questions were derived from the audio portion of the Grinder Safety Training CD. This print quiz offers an answer selection for each question. The skill checks on the actual Grinder Safety Training CD are not &#;multiple guess,&#; but multimedia demonstrations. Once the employee passes the CD&#;s interactive skill checks, you will know they can operate a pedestal and bench grinder safely.
1. Why should eye protection be used when operating a grinder?
A) To protect the worker&#;s eyes from sparks.
B) To protect the worker&#;s eyes from flying fragments, if the wheel breaks.
C) To protect the eyes from ultraviolet rays created by the hot metal.
D) A and B.
2. Which of these are forms of personal protective equipment you may need while using a grinder?
A) Eye protection.
B) Respirator.
C) Ear plugs.
D) All of the above.
3. Why shouldn&#;t you wear jewelry while operating a grinder?
A) The sparks will tarnish silver or gold.
B) It could get caught in the equipment.
C) The fumes will cause gems to become cloudy.
D) It&#;s considered bad luck in many workplaces.
4. Why would you want to tap a grinding wheel with the non-metallic handle of a screwdriver?
A) You would never want to do that. It could hurt the wheel.
B) If the wheel makes a ringing noise, you will know it is not fit for use.
C) It&#;s part of a test to check the usability of the wheel.
D) Tapping a grinding wheel shakes any impurities out of its pores.
5. When gauging the compatibility between a grinder&#;s RPM and a grinding wheel&#;s RPM, remember:
A) The two numbers must be exactly the same.
B) The two numbers are not connected.
C) The rpm of the grinder is always twice that of the grinding wheel.
D) None of the above.
6. When you need to put a new wheel on your grinder, what should you do with the wheel first?
A) Nothing. If it&#;s a new wheel, straight out of its packaging, just put it right on the grinder.
B) Give it a &#;ring test&#; to make sure it is suitable for use.
C) Prepare it for use by soaking it in water for no less than three minutes.
D) Roll it across the floor to make sure it is perfectly round.
7. How much of a gap should there be between the work rest and the face of the grinding wheel?
A) 1/8 in or less
B) No less than 1/8 in
C) ¼ in
D) 1 in
8. If your grinder requires repairs, what kind of replacement parts should you use?
A) Any kind that will fit. Parts for most brands of grinders are interchangeable.
B) Only manufacturer-recommended replacement parts.
C) Only parts purchased from the same store as the grinder.
D) None of the above.
9. The wheel hole diameter and the grinder arbor size are not the same. What can you do to make the wheel workable?
A) The wheel is not compatible with the grinder. Do not install it.
B) Go ahead and install it, even if you have to force the wheel onto the spindle.
C) Screw on the wheel nut especially tight.
D) B and C.
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10. What kind of material can you grind with aluminum oxide grinding wheels?
A) Only aluminum.
B) Any type of metal.
C) Any metal with a yellow, gold or amber hue.
D) Ferrous or iron-based materials, like iron or steel.
How many wrong answers are permissible? In the workplace: zero. (answers are at the bottom) Whenever workers operate an abrasive wheel grinder incorrectly, such incidents raise the possibility of accidents, injuries or death, which in turn can lead to workers&#; compensation expenses, raised insurance premiums, lost productivity, lowered employee morale, and OSHA penalties.
&#;In the workplace, knowledge is power,&#; notes Mangan, &#;and we want all workers to have the power to work safely and with skilled confidence. A knowledgeable worker is a happy, productive worker.&#;
MANCOMM, 315 West 4th Street, Davenport, IA -, 800-626-, MANCOMM.com.
Answers
1. D
2. D
3. B
4. C
5. D
6. B
7. A
8. B
9. A
10. D
When handheld portable grinders are used on the job they have a unique set of safety precautions that all workers should be aware of including preparation of a safe work area, PPE requirements and equipment selection and inspection.
Portable grinders are handheld power tools that are used for grinding, cutting or polishing. These versatile tools can be used for a variety of tasks and are commonly used on construction sites and in industrial shops.
Handheld portable grinders, with their own set of unique hazards, can be dangerous and can cause serious injuries or even start a fire causing property damage.
When operating a power tool, like a portable grinder, many safety precautions happen before the work even starts.
Select the right tool and wheel for the job.
Do not grind or cut material for which the wheel is not designed. The wheel label should indicate the purpose or material. If the disc label is missing, do not use it. RPM indicates the maximum operating speed. Make sure the wheel you are using has an RPM rating that meets or exceeds the rating of the tool. The wheel should not be thicker or larger in diameter than what the grinder recommends. The arbor (the hole in the center of the wheel) needs to be the correct size for the tool.
OSHA General Industry Standard .242(a) Each employer shall be responsible for the safe condition of tools and equipment used by employees, including tools and equipment which may be furnished by employees.
Inspect the portable grinder, the wheel that will be used, and the guard before operation.
Ensure the grinder is unplugged before inspecting, adjusting, removing or replacing parts. Inspect the tool for parts that may be broken, worn out, loose or missing. Look over the power cord to make sure it isn&#;t damaged and check to ensure the ground pin on the plug hasn&#;t been broken or removed. If the tool, cord or plug are found to be damaged or defective then tag and remove from service immediately. Check the wheel for cracks, chips, flaws, or deterioration and replace if necessary. Wet or damp wheels should be discarded.
OSHA Construction Standard .300(a) All hand and power tools and similar equipment, whether furnished by the employer or the employee, shall be maintained in a safe condition.
OSHA requires that wheels be closely inspected visually and also ring-tested before mounting them on the portable grinder. This simple test checks for cracks or defects that might otherwise go unnoticed.
OSHA General Industry Standard .243(c)(5)(i) Immediately before mounting, all wheels shall be closely inspected and sounded by the user (ring test) to make sure they have not been damaged in transit, storage, or otherwise.
&#;OSHA Construction Standard .303(c)(7) All abrasive wheels shall be closely inspected and ring-tested before mounting to ensure that they are free from cracks or defects.
Wear PPE that provides the best protection for the task.
&#;Always wear approved safety glasses or goggles when using a portable grinder. Face protection is highly recommended to protect against flying debris. Don&#;t wear loose clothing or jewelry and make sure long hair is secured. Consider wearing hearing protection appropriate for the sound level and duration of the task. Gloves may be required if the task produces sharp particles or the materials become hot. A dust mask, work apron or metatarsal foot protection may be needed based on the specific task.
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OSHA General Industry Standard .133(a)(1) The employer shall ensure that each affected employee uses appropriate eye or face protection when exposed to eye or face hazards from flying particles.
OSHA Construction Standard .303(c)(9) All employees using abrasive wheels shall be protected by eye protection equipment.