OSHA
1910.215 (c)(d)(1)
Abrasive
Wheel
Ring
Test
Why
take the time?
Much can happen to an abrasive wheel
between the factory and you.
If there is an unseen crack, the wheel
can explode with no warning.
It only takes seconds to do the ring
test.
A
10 inch wheel spins at around 1700 rpm.
The
smaller bench wheel at 3400 rpm.
To test a larger wheel, put a wooden dowel in a bench vice. The
dowel should be smaller the center hole on the wheel. Place the wheel on the
dowel. With the plastic handle of a screw driver, tap the wheel on the surface
as you steady the wheel with the other hand with a light touch. Tap 4 times,
once in each ¼ surface sections. Then turn the wheel 180 degrees and tap the
same sequence. If it “rings” a pretty tune, it is good. If it sounds like a
“thud”, it is bad and has a crack. (A crack blocks the sound continuum.)
To test the smaller wheel, it can be done in the store before
purchase and it will take 2 plastic handled screwdrivers. Put the metal end of
one screwdriver through the hole in the wheel. While holding it up, tap the
wheel with the handle of the other screwdriver in ¼ surface sections. Then turn
it 1/8 and repeat the same sequence. If it “rings”, it is good. If it “thuds”,
it is bad.
When
in doubt, buy a new stone.
It
is much cheaper than an emergency room.
Written By Lorraine Lawson
Author:
Deborah Grow, Safety Specialist
Private
Safety Consultant, assistant Damon Fall Protection and Coordinator EHS Network ~
Kansas. Extensive safety experience
in General Industry, Construction, D.O.T. Compliance, and OSHA
consultation project. Contact Deborah if you would like to schedule a consultation
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