OHS Code Explanation Guide

Published Date: July 01, 2009
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Part 37 Oil and Gas Wells

Section 773 Rotary table danger zone

Subsection 773(1)

The extent of the danger zone will depend on the particular design of the rig. The limit of the danger zone can be marked by a line painted on the floor or some other equally effective means.

Subsection 773(2)

Loose materials can get caught in rotating equipment. Examples include tools, ropes, chains, clothing and fall protection lanyards.

Subsection 773(3)

Once a hazard assessment is completed as required by Part 2 of the OHS Code, a worker may be permitted within the rotary table danger zone, while the rotary table is in motion, only if it is done during a non-drilling operation e.g. tripping pipe. In that case, the requirements of subsection 773(4) must be met.

Subsection 773(4)

If the requirements of subsection 773(3) are met, a worker may be permitted within the rotary table danger zone, while the rotary table is in motion, subject to the following conditions:

(a) the table is turning at a slow rate of speed and the Driller is attending to the controls,
(b) any equipment that may contact the rotating equipment, whether loose or suspended, is kept clear at all times while the rotary table is turning,
(c) all workers who have positioned slips or tongs are clear of the rotating equipment,
(d) all tong lines are placed outside of the line of rotating slips,
(e) any clothing or personal protective equipment worn by the workers is such that there are no loose or trailing pieces that could become entangled in the rotating equipment, and
(f) the worker does not wear any jewellery or similar adornments that could become entangled in the rotating equipment.

Subsection 773(5)

When drilling operations resume and the rotary table is to be returned to a high rate of speed, all workers and all equipment must be positioned outside of the rotary table danger zone.