City & Guilds Felling upto 380mm CS31 Flashcards
What is the safe working distance
2 tree lengths apart
What safeguards could be used with paths:
Warning signs
Barrier tape
Banks person
Other
What safeguards could be used with roads:
Warning signs
Traffic management
Permissions granted
Other
What safeguards could be used with underground/overground wayleaves
Increase safe working distances
Wayleaves shutdown
Permit to work
Other
Legal factors to consider in relation to tree felling may include:
Felling licenses
Tree Preservation Order (TPOs)
Conservation areas
Other
Environmental considerations may include:
Location of fuelling site
Valuable flora and fauna
Damage to understory
Other
Recognition of disease and decay in trees may include:
Fungal growth/cavities
Flaking/missing bark
Discolouration of timber/bark
Other
Modification of felling methods may include:
placing felling cuts higher up the stem in sound timber
use of assisted felling techniques to ensure accurate felling direction
non-removal of buttresses roots/basal flare to provide more holding timber
other
Advantages of setting up supports prior to felling may include:
to provide an ergonomic working height for further processing
to ease the turning of trees
to reduce the need for manual handling
other
Equipment used to aid with the felling of trees maybe:
Felling wedges
Levers
Other
Techniques that can be used to fell a tree that has sat back against the intended felling
direction may include:
Make a small boring cut into back of tree at position of felling cut and insert
felling lever to lift tree over
Make new felling cuts to fell tree (in the direction of lean if site conditions allow)
Drive a wedge into the main felling cut to lift tree over
Pre-start checks and setting of the machine to include:
Chain tension and condition checked for safe and effective use
Safety features checked for condition and function
External nuts and bolts checked for security
Chainsaw contains sufficient fuel and chain oil for operations
Battery saw contains sufficient oil and charge
Prepare site and escape routes by:
Ensuring the control measures identified in site specific risk assessment are
applied
Determining the felling direction
Setting up a felling bench if required
Removing debris from around the base of the trees to be felled and compact
vegetation to facilitate felling at appropriate height
Removing dead or suppressed trees and any other vegetation adjacent to the
tree, in the felling direction or escape routes that may be a danger
Inspecting the felling area and adjacent trees for dead wood and insecure
branches
Ensuring no unauthorised person is within two tree lengths
Prepare trees for felling by:
Brashing lower branches taking into account:
Correct break-in
Position of the saw in relation to the operator, bar on opposite side of stem
Height to which branches are removed
Saw body not above shoulder height
Operating technique
Brashing close to the stem
Removing climbing vegetation, buttresses and other obstructions as appropriate
Inspecting the tree for signs of rot or decay
Preparing trees for felling may include:
Brashing lower branches
Correct break-in
Position of the saw in relation to the operator, bar on opposite side of stem
Height to which branches are removed
Saw body not above shoulder height
Operating technique
Brashing close to the stem
Removing climbing vegetation
Removing buttresses and other obstructions as appropriate
Inspecting the tree for signs of rot or decay
An appropriate felling direction is selected taking into account:
Tree form
Site conditions/considerations
Hazards/obstacles
Equipment used
Other