Lockout/Tagout Procedures for Deep Hole Drilling Machines
Why LOTO Is Critical on Deep Hole Drills Lockout/tagout is standard safety on any machine tool. Deep hole drilling machines add two hazards that make LOTO especially critical: trapped high-pressure coolant and separately-powered coolant pumps. A deep hole machine can hold 500-1000 psi of residual coolant pressure after the pump shuts off. The pressure is trapped in the filter housing, the rotating union, and the supply lines. Opening a fitting without bleeding the pressure first releases a jet of coolant that can inject through skin. ...