Hazards: Contact with blades and rotating parts · Flying chips and abrasive fragments · Electric shock from damaged cords · Struck-by disconnected pneumatic tools · Powder-actuated tool discharge
Why it matters
Machine guarding, 29 CFR 1910.212, was the tenth most frequently cited OSHA standard in fiscal year 2025 — that is the general industry guarding rule, and construction's version, 1926.300(b), asks for the same thing: guards on, point of operation covered. Tools are the equipment we touch most and inspect least. A grinder wheel at full speed, a table saw with the guard tied back, a frayed cord in wet weather: none of those give you a second chance to think it over.
Key points
- Guards stay on. 1926.300(b)(1)-(4): belts, gears, shafts, pulleys, flywheels and the point of operation get guarded. Removing a guard to work faster is the most cited tool problem there is.
- Tools in safe condition — all of them. 1926.300(a) covers employer and employee tools alike. Mushroomed chisel heads, split handles, sprung wrench jaws, dull blades: out of service.
- The right switch for the tool. Circular saws and chain saws: constant pressure, off when you let go. Drills and angle grinders: momentary contact on-off. Zip-tying a trigger down is not a modification, it is a trap.
- Grounded or double-insulated. 1926.302(a)(1). Inspect cords and plugs before use, and never hoist or lower a tool by its cord.
- Pneumatic tools get retainers. The tool must be positively secured to the hose so it cannot come apart, and impact tools need safety clips or retainers so the bit does not become a projectile. Hoses over 1/2 in ID need a pressure-relief safety device at the supply.
- Powder-actuated tools are trained-operator only. 1926.302(e)(1): only employees trained on that particular tool may operate it. Loaded tools are never left unattended.
- Disconnect before you service. Unplug or disconnect the air before changing a blade, a bit, a wheel or clearing a jam. "It's off" is not the same as "it's disconnected."
Do / Don't
Do
- Inspect the tool, cord, hose and guard before each use.
- Let the tool reach speed before it touches the work.
- Secure the workpiece — clamps, not your other hand.
Don't
- Wedge, tie back or remove a guard to make a cut.
- Carry a tool by the cord or hose.
- Use a grinding wheel past its rated speed or with a cracked wheel.
Quick site check
- Pull the two tools we use most and check guard, cord and switch together, right now.
- Any tool on this job with a missing guard or a defeated trigger?
- Where is the tag-out spot for broken tools, and is anything sitting in the box that should be there?
Discussion — ask the crew
- Which tool in our gang box has a guard missing, tied back, or wedged open right now?
- When did we last look at the cords and plugs on the tools we use every day?
- Who here has been hit by a chip or a fragment this year, and what was different that day?
- What do we do with a tool that is broken — where does it actually go so nobody grabs it again?
Refs: 29 CFR 1926.300 — General requirements, hand and power tools (guarding, point of operation, switches) · 29 CFR 1926.301 — Hand tools · 29 CFR 1926.302 — Power-operated hand tools (grounding, pneumatic, powder-actuated) · OSHA — Top 10 Most Frequently Cited Standards, FY 2025Sign-in sheet included in the printed version