Mich. Admin. Code R. 408.10121 - General requirements
Rule 121.
(1)
An abrasive wheel shall be provided with a guard, except as noted in this
subrule, which shall cover the spindle end, nut, and flange projections, as
well as the periphery, other than where work is to be performed (see figures).
Exceptions are as follows:
(a) Wheels used for
internal grinding while advancing or retracting the work or while within the
work.
(b) Mounted wheels that are
not more than 2 inches in diameter.
(c) Plug and cones that are not more than 3
inches in diameter or 5 inches in length.
(d) A type l reinforced wheel which is not
more than 3 inches in diameter and 1/4 inch thick and with which safety glasses
and face shield protection are provided and used as prescribed in Part 33.
Personal Protective Equipment, being
R
408.13301 et seq. of the Michigan Administrative
Code.
(e) Lapidary grinding. A
metal diamond lapidary blade which is notched, segmented, or continuous rim and
which is used within a coolant deflector does not require guards for speeds of
not more than 3,500 sfpm.
(f) Tuck
point wheel, masonry, or concrete saws may have the spindle end, nut, and
flange exposed as per figures 1 and 2 of
R
408.10198.
(2) The guard shall be constructed of
material that is capable of retaining pieces of a broken wheel. See material
tables. The guard shall be mounted so as to maintain alignment with the
abrasive wheel to contain wheel breakage, and the strength of the fastenings
shall exceed the strength of the guard. The guard shall be in position before
starting the wheel.
(3) Where
flying particles or fragments are a hazard to employees other than the grinder
operator, an enclosure or barrier shall be provided to isolate the operation
from the remaining working area.
(4) When openings in the wheel safety guard
assemblies are required for dressing, a means shall be provided to protect the
operator and other personnel from the hazards of flying particles, sparks, or
wheel fragments.
Notes
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