Ikra IPCS 2525, Operating Instructions Manual

Page: 33 / 160

GB | Operating Instructions
12
Example of attachment of tree service chain-saw
to centre rear mid-point on harness
When moving the saw from any one attachment point
to another, operators should ensure it is secured in the
new position before releasing it from the previous at-
tachment point.
Using the chain-saw in the tree
An analysis of accidents with these saws during tree
service operations shows the primary cause as being
inappropriate one-handed use of the saw. In the vast
majority of accidents, operators fail to adopt a secure
work position that allows them to hold both handles of
the saw. This results in an increased risk of injury due to
- not having a firm grip on the saw if it kicks back,
- a lack of control of the saw, such that it is more likely
to come into contact with climbing lines and the op-
erator’s body (particularly the left hand and arm), and
- loss of control owing to an insecure work position and
resulting in contact with the saw (unexpected move -
ment during operation of the saw).
Securing the work position for two-handed use
In order to allow the saw to be held with both hands, as
a general rule operators should aim for a secure work
position in which they operate the saw at
- hip level, when cutting horizontal sections, and
- solar plexus level, when cutting vertical sections.
Where the operator is working close into vertical stems
with low lateral forces on the work position, then a good
footing could be all that is needed to maintain a secure
work position. However, as operators move away from
the stem, they will need to take steps to remove or
counteract the increasing lateral forces by, for example,
a redirect of the main line via a supplementary anchor
point or use of an adjustable strop direct from the har-
ness to a supplementary anchor point.
Example of redirection of main line via supplementary
anchor point
Gaining a good footing at the working position can be
assisted by the use of a temporary foot stirrup created
from an endless sling.
Example of temporary foot stirrup created from
endless sling