Mich. Admin. Code R. 408.41943 - Powder-actuated tool operation
Rule 1943.
(1)
An operator and assistant using a powder-actuated tool shall be safeguarded by
means of eye protection. Head and face protection shall be used as required by
the working conditions. Eye protection and head and face protection shall be
provided for and as prescribed in Construction Safety Standard Part 6 "Personal
Protective Equipment," as referenced in
R
408.41902.
(2) Before using a powder-actuated tool, the
operator shall inspect it to determine to the operators satisfaction that it is
clean, that all moving parts operate freely, and that the barrel is free from
obstructions. A tool found not to be in proper working order, or that develops
a defect during use, shall be immediately removed from service and tagged, and
not used until repaired. The tag shall be as prescribed in Construction Safety
Standard Part 22 "Signals, Signs, Tags, and Barricades," as referenced in
R
408.41902.
(3) A powder-actuated tool shall not be
loaded until just prior to the intended firing time. An unattended
powder-actuated tool shall not be left loaded.
(4) A powder-actuated tool shall not be left
unattended in a place where it is available to unauthorized persons.
(5) Neither a loaded nor an empty
powder-actuated tool shall be pointed at any employee, and hands should be kept
clear of the open barrel end.
(6) A
fastener shall not be driven under any of the following conditions:
(a) Through an existing hole, unless a
positive guide is used to secure accurate alignment.
(b) Into a material that can be easily
penetrated, unless the material is backed by a substance that will prevent the
fastener from passing completely through and creating a flying missile hazard
on the other side.
(c) Into a very
hard or brittle material, such as cast iron, glazed tile, surface hardened
steel, glass block, live rock, face brick, or hollow tile, unless designed for
such use. Before fastening any questionable material, the operator shall
determine its suitability by using a fastening as a center punch. If the
fastener point does not easily penetrate, is not blunted, and does not fracture
the material, initial test fastenings shall then be made pursuant to the tool
manufacturers recommendations.
(d)
Directly into material, such as brick or concrete, closer than 3 inches from
the unsupported edge or corner, or into a steel surface closer than 1/2 inch
from the unsupported edge or corner, unless a special guard, fixture, or jig is
used. As an exception, a low velocity powder-actuated tool may drive no closer
than 2 inches from the edge in concrete or 1/4 inch in steel. When fastening
other material such as a 2 inch by 4 inch wood section to a concrete surface, a
fastener of no greater than 7/32 inch shank diameter may be driven not closer
than 2 inches from the unsupported edge or corner of the work
surface.
(7) A fastener
shall not be driven into a spalled area caused by an unsatisfactory
fastening.
(8) A powder-actuated
tool shall be used with the correct guard, shield, or attachment recommended by
the manufacturer.
Notes
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