Details of a suggested simple tree management system are given in Appendix 1.
Do not bypass hazard trees without taking some action such as felling or establishing a No-Work-Zone. Degree of hazard varies with tree size, species, and type/location of defect: Stem defects resulting in tree failure, i.e., collapse.
Weakened sapwood resulting in loss of control when falling trees & limits solid wood for wedging. Overhead hazards, i.e., dead or hanging limbs falling on the faller. Indicators of potential felling hazards. Establish a visual or audible communication system between overhead workers and workers on the ground before starting rigging operations for piecing out the tree. The system must effectively communicate when employees who are beneath overhead tree workers should stand clear of the drop zone, and when it is safe to approach a drop zone.
A worker trained in emergency procedures needs. The size and extent of the NWZ must be determined by onsite conditions, such as terrain, stand structure, and fire impacts on the tree and adjoining trees. When an identified hazardous tree or trees cannot be felled, then perform an assessment of which areas have too high a risk, and post a lookout to warn the personnel to stay clear of these areas while working in adjacent areas. Plan - Cutting Height of notch and back-cut Enable safe control of saw, tree and escape Standard/Humbolt - Back-cut 1” to 2” above notch apex Depth of notch Shall not exceed 1/3 diameter of tree Back-cut Shall not penetrate hinge.
Nov 04, Section of the Occupational Health & Safety Act states: A tree shall, (a) be felled only: (i) After all workers, other than the logger felling the tree, are cleared from the danger area; (ii) After all snags have been cut and cleared away; (iii) After chicots and spring poles in the vicinity of the tree being felled have been lowered safely to. Tree Work Safety Guide Tree ca re operations include the trimming, pruning, felling, and removal of trees and bushes.
They involve climbing trees, using portable ladders, w orking at heights while using hand and portable power tools, working near energized overhead or downed power lines, feeding chippers, and other hazardous operations.