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Environmental Remediation Drilling

Safety Guidelines

Page 55 of 132

4.5.7 - Drilling

Considerations during general operation:

No visitors are permitted in the vicinity of the work area without proper protective clothing and authorized

permission.

Only personnel necessary to achieve drilling objectives should remain within the exclusion zone. All others

should remain outside the exclusion zone.

Effective communication (hand signals), especially under high noise conditions, is essential to safety.

Clarify use of hand signals.

If the operator of the rig must leave the area of the controls, he operator should shift the transmission

controlling the rotary drive and the feed control to neutral.

All crew members should be familiar with basic controls of the rig, including how to stop the engines, align

the kelly with the borehole, raise and lower the drive head, raise and lower hoists, and chuck or unchuck

the rods.

Do not climb the rig mast while equipment is running. Shut down/lock out equipment and use full body

safety harness if climbing mast is necessary.

The operator of a drilling rig should only operate the rig from the position of the controls.

The operator should shut down the drilling engine before leaving the vicinity of the drilling rig.

Drilling should always proceed cautiously, especially at depths less than ten feet.

Operation of drilling equipment should be limited to qualified personnel.

Do not exceed the manufacturers' technical specifications for items such as speed, force, torque, pressure,

and flow.

If drilling in an enclosed area, make certain the exhaust fumes are vented from the work site.

If drilling with air, direct the exhaust and cuttings away from the workers.

Never operate the drill rig with any of the machinery guards removed.

Drill rods and sampling barrels should never be left unsecured, leaning against or balanced across the drill

rig.

Never exceed the pipe and rod racks design maximum load.

Always make provisions to prevent stock from accidental rolling.

When core is being extruded from a core barrel, hands should be kept out of line of the end of the barrel.

Attach safety chains or cables swivel, air, and other pressure hoses.

When cranking pumps or other motors keep head well back of the crank area to avoid being hit when motor

turns over.

Fugitive dust control is to be used during dry drilling, especially in potential areas of naturally occurring

asbestos.

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Safety 1st Advancer Betreibershandbuch Seite 55