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. 408.41933 - Portable powered tools; controls

Universal Citation: MI Admin Code R. 408.41933

Current through Vol. 24-16, September 15, 2024

Rule 1933.

(1) A hand-held powered circular saw which has a blade diameter of more than 2 inches; an electric, hydraulic, or pneumatic chain saw; and a percussion tool without positive accessory holding means shall be equipped with a constant-pressure switch or control that shuts off the power when the pressure is released. A gasoline-powered, hand-operated tool shall be equipped with a constant-pressure throttle control. A throttle position lock may be provided for starting only.

(2) All of the following tools shall be equipped with a constant-pressure switch or control and may have a lock-on control if the tool can be turned off by a single motion of the same finger or fingers that turn it on without release of the grip on the tool:

(a) A hand-held powered drill.

(b) Tapper.

(c) Fastener driver.

(d) Grinder with a wheel more than 2 inches in diameter.

(e) Disc sander with a disc more than 2 inches in diameter.

(f) Belt sander.

(g) Reciprocating saw.

(h) Saber saw.

(i) Scroll saw.

(j) Jigsaw with a blade shank more than a nominal 1/4 inch.

(k) Similarly operating power tool.

The lock-on control of a drill of more than 3/8-inch capacity shall not be used when the drill is held in the hand to drill, clean, or enlarge a hole.

(3) All of the following hand-held powered tools may be equipped with either a positive on-off control or other control as prescribed in subrules (1) and (2) of this rule:

(a) A platen sander.

(b) Grinder with a wheel 2 inches or less in diameter.

(c) Disc sander with discs 2 inches or less in diameter.

(d) Router.

(e) Planer.

(f) Laminate trimmer.

(g) Nibbler.

(h) Shear.

(i) Saber saw.

(j) Scroll saw.

(k) Jigsaw with a blade shank of nominal 1/4 inch or less.

(4) The operating control on a hand-held power tool shall be located so as to prevent accidental operation.

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