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HAZARD MITIGATORS—DRILLING(INCLUDING INDOOR) <br /> Applies to Task: kf O lk a) ❑ ® ❑ ® ❑ ® ❑ ® ❑ ® ❑ <br /> • Follow the equipment manufacturer's procedures if ropes become caught in, or objects are <br /> pulled into a cathead. <br /> • Do not run or rotate drill rods through rod slipping devices. No more than 5 feet of drill rod <br /> column shall be hoisted above the top of the drill mast. Drill rod tool joints shall not be made <br /> up,tightened,or loosened while the rod column is supported by a rod slipping device. <br /> • Control dust using dust suppression techniques. <br /> • Clean augers, drill casing, or drill rod only when the rotating mechanism is in neutral and the <br /> pipe is stationary is stopped. <br /> • Cap and flag open boreholes;open excavations shall be barricaded. <br /> • Keep all hand tools used during drilling operations clean and in good working condition. <br /> • Check fire extinguishers and notify all onsite personnel to their whereabouts. <br /> • Check cables for frays and hydraulic hoses for leaks daily. <br /> • In situations where ambient water level may be above top of well screen,during well <br /> construction,ensure that well casing is vented to prevent air pressure build-up in blank <br /> casing above screen. <br /> Indoor Drilling <br /> • Conduct a survey, prior to bringing drilling equipment to the job site, to identify ceiling <br /> height, overhead hazards, potential subsurface hazards, terrain hazard, and building stability <br /> particularly during drilling activities. Identify sources of ventilation(including open doorways <br /> for cross ventilation and fans to assist in air flow). Once on site, before drilling equipment is <br /> moved, the travel route shall again be visually surveyed for overhead and terrain hazards and <br /> avenues of ventilation will be opened or turned on. <br /> • Notify and/or evacuate all building occupants prior to start of drilling activities. <br /> • All drilling rig exhaust will be redirected outdoors by tubing. The perimeter of the outdoor <br /> exhaust area shall be roped off a suitable distance to allow proper ventilation of exhaust. <br /> • Monitor ambient oxygen percentage and carbon monoxide concentrations in the work zone,as <br /> well as entire indoor area, to prevent low oxygen or high carbon monoxide environments. <br /> Operations shall cease and the building will be evacuated if levels become dangerous. <br /> Deleted:Drilling-H.Mit <br /> Deleted:7/7/2006 <br /> IJrilli t9-I(aI Iit.di!�doc Page 2 of 2 -- - ---- <br />