// Machinery
Landscaping - Tree Trimming
What should you do when tree trimming? Set-up: Make sure you are properly trained on how to use the equipment.
hand protection
Set-up:
- context Make sure you are properly trained on how to use the equipment. Some jurisdictions may have regulations about the type of training required for tree cutting and trimming.
- context If an aerial bucket truck or other boomed vehicle is used, the operators must be trained in the safe operation of these vehicles.
- context Before trimming a tree, inspect the area to identify possible hazards (e.g., presence of power lines, broken or cracked limbs after a severe storm) and take appropriate actions to prevent injuries or incidents.
- context Assume any power lines are energized or "live". Avoid any direct or indirect contact with the power line until the utility or hydro company has verified that the line has been de-energized. (More information on working near power lines is below.)
- context Mark off area around tree and prevent bystander access. Always work with another person who stays on the ground.
- context Learn to recognize trees weakened by disease and types of trees prone to cracking.
- context Inspect tree limbs for strength before climbing. Check for cavities in the tree, rotten or dead branches, splits and cracks in the trunk or where branches are attached, broken branches hanging in the tree, etc.
- context Inspect the fall protection equipment and lines before each time they are used. Tag and remove any damaged or defective equipment from service until it can be repaired or replaced and disposed of properly, according the manufacturer's recommendations.
- context If a ladder is used, tie it off on a secure branch.
Operation:
There are many tips in other Landscaping OSH Answers documents.
- context Break small dead branches off by hand as you climb. Remove larger branches with proper tools.
- context Place hands and feet on separate limbs and move only one hand or foot at a time.
- context Raise or lower tools by attaching hand lines to the end of tools. Tools attached at the centre might catch on branches. Smaller tools may be raised and lowered in a bucket attached to a hand line.
- context Use non-conductive tools and personal protective equipment if working near electrical power lines.
- context Be sure that you can see the cut you are making so you do not cut hand lines, safety ropes, etc. unintentionally.
- context Attach a fibre or leather guard on saws that are held by a ring on worker's belt.
- context The series of OSH Answers on chain saws contains safety information about their proper use and operation.
What should you avoid when trimming trees?
- requirement Do not use dead branches for support.
- requirement Do not climb trees during wet or icy weather or under high wind conditions.
- requirement Do not leave partially sawn limbs on trees.
- requirement Do not carry saws, pruners and other tools while climbing.
- requirement Do not use axes or hatchets.
What are safety tips for using ropes?
- administrative Inspect regularly for flaws along the entire length of the rope.
- requirement Move ropes slowly over limbs or through crotches to prevent friction damage.
- requirement Keep ropes coiled when not in use.
- requirement Store ropes in ventilated boxes and protected from weather.
- requirement Never use safety lines for raising and lowering equipment or tree limbs.
What are safety tips when working near power lines?
- requirement Contact the power utility company before working on trees near power lines to arrange for ways to protect the employees (e.g., cutting off the power to the lines and grounding them or using insulating blankets on the power lines).
- requirement Know the minimum working distances from "live" power lines for the voltage they are conducting.
- requirement Use proper ropes with appropriate carriers and hooks for raising and lowering equipment.
- requirement Use a pull rope to prevent branches from falling toward power lines.
- requirement Use non-conducting tools and equipment.
- ppe Wear rubber gloves when using a pole pruner.
- requirement Ensure that the pole pruner's cutting head is connected to the lever at the lower end of the pole with a polypropylene rope. Do not use a wire or chain.
- requirement Apply and maintain a coating of non-conductive, wood preservative to help keep wooden pruner handles dry.
What should you avoid when working near power lines?
- requirement Do not approach fallen power lines.
- requirement Do not grasp the pruner closer than four feet from the metal head.
- requirement Do not use wet or moist pruners near power lines.
What should you know about Personal Protective Equipment?
See the Personal Protective Equipment OSH Answers for more information.
- context Use approved safety belts, lifelines, and leather gauntlet gloves.
- context Wear head and eye protection and footwear protection with slip-resistant soles.
- context Choose close-fitting, long-sleeved clothing.