Safety 1st Advancer Instrukcja Operatora Pobierz pdf (Strona 51)

Environmental Remediation Drilling

Safety Guidelines

Page 51 of 132

4.4 - Rotary Drilling cont.

Listed below are general rotary (air and mud) drilling hazards:

• Do not brake drill rods during their lowering into the hole with drill rod chuck jaws.

• Drill rods should not be held or lowered into the hole with pipe wrenches.

• If a string of drill rods is accidentally or inadvertently released into the hole, do not attempt to grab the

falling rods with your hands or a wrench.

• In the event of a plugged bit or other circulation blockage, high pressure in the piping and hose between

the pump and the obstruction should be relieved or bled down before breaking the first tool joint.

• When drill rods are hoisted from the hole, they should be cleaned for safe handling with a rubber or

other suitable rod wiper. Do not use your unprotected hands to clean drilling fluids from drill rods.

• If work must progress over a portable drilling fluids (mud) pit, do not attempt to stand on narrow sides

or cross members. The mud pit should be equipped with a rough surface or cover panels of adequate

strength to hold drilling rig personnel.

• Drill rods should not be lifted and leaned unsecured against the mast. Either provide some method of

securing the upper ends of the drill rod sections for safe vertical storage or lay down the rods in a safe

area.

• Drill rod chuck jaws should be checked periodically and replaced when necessary.

• The capacities of hoists and sheaves should be checked against the anticipated weight of the drill rod

string plus other expected hoisting loads.

• Only the operator of the drill rig should brake or set a manual chuck so that rotation of the chuck will

not occur prior to removing the wrench from the chuck.

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Safety 1st Advancer Instrukcja Operatora Strona 51