Safety 1st Advancer Manual do Operador descarregar pdf (Página 74)

Environmental Remediation Drilling

Safety Guideline

Page 74 of 132

4.10.2 - Hoist Safety

DANGER!

Drill rig hoists and masts are designed for vertical lifting of drilling tools only. Do not

attempt to lift something away from the borehole as damage to the cable, sheave, or

structural failure may occur.

Listed below are guidelines regarding wire ropes and hoists:

• Replace damaged safety latches on safety hooks before using.

• Always use proper lifting devices.

• Use tool handling hoists only for vertical lifting of tools (except when angle hole drilling).

• Do not use tool handling hoists to pull on objects away from the drill rig, however, drills may be moved

using the main hoist of the drill if the wire rope is spooled through proper sheaves according to the

manufacturer's recommendations.

• When stuck tools or similar loads cannot be raised with a hoist, disconnect the hoist line and connect the

stuck tools directly to the feed mechanism of the drill.

• Do not use hydraulic leveling jacks for added pull to the hoist line or to the feed mechanism of the drill.

• When attempting to pull out a mired down vehicle or drill rig carrier, only use a winch on the front or

rear of the vehicle and stay as far as possible away from the wire rope. Do not attempt to use tool hoists

to pull out a mired down vehicle or drill rig carrier.

• Avoid sudden loading in cold weather.

• Never use frozen ropes.

• Replace faulty guides and rollers.

• Know the working load of the equipment and rigging being used and the weight of the load being lifted.

Never exceed these limits.

• Periodically inspect and test hoist clutches and brakes.

• Know and do not exceed the rated capacity of mast hooks rings, links, swivels, shackles, and other

lifting aids.

• Never conduct any hoisting operations when the weather conditions are such that hazards to personnel,

the public, or property are created.

• Never use a hoist line to ride up the mast of a drill rig.

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

away from the hole.

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Safety 1st Advancer Manual do Operador Página 74