Safety 1st Advancer Instrukcja Operatora Pobierz pdf (Strona 43)

Environmental Remediation Drilling

Safety Guidelines

Page 43 of 132

SECTION 4 - DRILLING OPERATIONS

4.1 - Rig Set-up

The drilling contractor is responsible for ensuring that the rig is properly set-up. This includes such tasks as

stabilizing the rig, clearing the location of overhead obstructions that may contact the mast as it is being

raised or is in the fully raised position, and raising the mast. Each task is discussed in greater detail below.

4.1.1 - Drill Rig Stabilization

Rig stability is essential for conducting safe drilling operations. Components to assuring proper stabilization

include rig placement (or location), use of hydraulic leveling jacks, use of blocking (or cribbing), and use of

wheel chocks. Specific items to consider include the following:

Rig Placement

• To the extent possible, situate the rig on dry, level (recommended no more than 5% grade), and

stable compacted ground surface.

• To the extent possible, avoid rough terrain and sites that do not allow sufficient space for worker

access and egress to and from rig and associated support equipment.

• Carefully evaluate the drilling site prior to setting the leveling jacks, especially if the location is on

water saturated, frozen, or loose, caving soil.

• Avoid situating rig on sloped ground. If necessary, build up solid, compacted earth where the jacks

contact the ground.

• Rig is to be backed perpendicular to slope so at least the rig is level left to right, and the driller's

platform is closer to the ground.

• The jacks from left to right should be as level as possible to prevent the rig from moving during

operation.

• When setting up drilling fluid discharge, ensure it is channeled away from the rig to avoid soil

erosion under jacks and cribbing.

• Avoid situating rig where overhead obstructions, such as tree limbs, canopies, overhead power lines,

and piping racks, create unsafe drilling or tool handling conditions.

• Engage the emergency brake once the rig has been positioned.

Jacks

• Lower or extend leveling jacks and outriggers to raise the rig partially, or in some cases entirely, off

the ground and to minimize the potential for the rig to tip over once the mast is raised.

• Do not position hands on or near jacks as jacks are being lowered or raised.

• Maintain jacks in lowered position as long as mast is raised.

• Non-skid jack pads are recommended for unimproved terrain or slopes.

• Be sure to monitor all rig jacks during setup and operation (front center and/or rear).

• Jacks should be inspected throughout drilling operations to identify changing ground conditions.

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Safety 1st Advancer Instrukcja Operatora Strona 43