Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › Construction Safety and Health Standard › Part 19 - TOOLS › Section R. 408.41943 - Powder-actuated tool operation

Current through Vol. 24-12, July 15, 2024
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.