ORIGINAL INSTRUCTIONS
15
NOTE: It is necessary to have a complete training before working at high. It is strongly recommended that
only experienced and trained persons carry out work at high. Know all emergency procedures to be
carried out.
These instructions are examples of good practice. Follow and abide by local laws and regulations as well.
It is also recommended that the operator who is going to work at height be assisted by another person.
It is compulsory with techniques of climbing and working position. Be equipped with complete equipment including
harnesses, ropes, strops, snap hooks and other equipment that allows them to maintain and maintain the saw by
adopting secure positions.
a. Using the Chainsaw in the Tree
An analysis of accidents with chainsaws during tree pruning shows that the main cause is an inadequate use
of the one-hand chainsaw. In a large majority of accidents, operators do not seek to adopt a safe working
position that allows them to hold with both hands. This results in an increased risk of injury due to:
-
The absence of a firm grasp of the chainsaw in case of rebound
-
A lack of control of the chainsaw, which is more likely to come into contact with the climbing ropes and
with the operator's body (especially the hand and the left arm) and
-
Loss of control due to unsafe working position, resulting in contact with the chain saw (unexpected
movement during operation of the chain saw).
b.
Safe positioning for two-hand operation
In order to allow operators to hold the chain saw with both hands, it is generally recommended that they aim
for a safe working position when operating the chain saw:
-
At the hip, when cutting horizontal sections, and
-
At the level of solar plexus, when cutting vertical sections.
When operators work near vertical trunks with low lateral forces on their working position, good support may
be sufficient to maintain a safe working position. However, as operators move away from the trunk, they will
need to take steps to suppress or neutralize increasing lateral forces, for example by redirecting the main rope
through an additional anchor point or using an adjustable strap directly from the harness Has an additional
anchor point.
The obtaining of a good support to the working position can be favored by the use of a foot stirrup created by
an endless sling.
