Safety 1st Advancer Manual do Operador descarregar pdf (Página 56)

Environmental Remediation Drilling

Safety Guideline

Page 56 of 132

4.5.7 – Drilling cont.

• When adding and removing drill rod:

o Only the drill operator will brake or set the chucks, to eliminate the possibility of engaging the

transmission prior to removing the chuck wrench.

o Do not use the chucks as a brake on a string of drill rods that are being lowered into a hole.

Braking the drill string with the chuck will result in metal slivers on the drill rod and consequent

hand injuries, and could result in losing the drill rod down the hole.

o Check the chuck jaws periodically and replace them as necessary.

o Never place hands on wrenches where they can get trapped between the wrench and the drill rig.

o Ensure that wrenches are removed from rods before starting to drill.

o Do not take hold of the male thread end of drill rod. Watch for sharp burrs on rods and casing,

and file sharp edges off rods when necessary.

o Do not use extension leverage (cheaters) on pipe wrenches to break drill rod. If extension

leverage is needed, the wrong tool is being used.

o Clean drill rods with a rubber wiper or other suitable device when being removed from a hole.

o Allow drilling fluids to drain from drill rods into the mud pit before setting the rod to the side, to

minimize the amount of mud around the work area.

o The operator knows the capacity of the hoist and mast, and the weight of the drill rod, to prevent

the hoist capacity from being exceeded.

o The drill rig operator must exercise care to lower the hoist slowly while the drill rod is being

carried away from the hole.

o There should be at all times at least three wraps of hoisting line on the hoist drum to prevent a

line load from being applied directly to the fastening clamp.

o Do not guide or hold onto moving wire line work cables with bare hands.

4.5.8 - Adding and Removing Drill Rods

When adding and removing drill rod:

Only the drill operator will brake or set the chucks, to eliminate the possibility of engaging the transmission

prior to removing the chuck wrench.

Do not use the chucks as a brake on a string of drill rods that are being lowered into a hole. Braking the drill

string with the chuck will result in metal slivers on the drill rod and consequent hand injuries, and could

result in losing the drill rod down the hole.

Check the chuck jaws periodically and replace as necessary.

Never place hands on wrenches where they can get trapped between the wrench and the drill rig.

Ensure that wrenches are removed from rods before starting to drill.

Do not take hold of the male thread end of drill rod. Watch for sharp burrs on rods and casing, and file sharp

edges off rods when necessary.

Use of extension leverage (like a cheater pipe) on pipe wrenches to break drill rod should be avoided

whenever possible. If extension leverage is needed, the wrong tool is probably being used. In rare

instances where extension is required, use extreme caution to avoid slippage and possible injury.

Clean the drill rod with a rubber wiper or other suitable device when being removed from a hole.

Allow drilling fluids to drain from drill rods into the mud pit before setting the rod to the side, to minimize

the amount of mud around the work area.

Do not guide or hold onto moving wire line work cables with bare hands.

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