This subtopic covers the essential theoretical knowledge and practical competencies required for a Level 2 Arborist, including tree identification, safe ch
Topic Synopsis
This subtopic covers the essential theoretical knowledge and practical competencies required for a Level 2 Arborist, including tree identification, safe chainsaw operation, pruning techniques, and relevant health and safety legislation. It ensures candidates are ready for direct assessment of their ability to perform arboricultural tasks safely and effectively in real work environments.
Key Concepts & Core Principles
- Risk assessment and method statements (RAMS) – identifying hazards like falling branches, unstable ground, or overhead power lines before starting work.
- Tree climbing techniques using rope and harness, including the use of friction hitches (e.g., Prusik, Blake's hitch) and mechanical devices (e.g., ascenders, descenders).
- Pruning methods – crown reduction, thinning, and deadwood removal, ensuring cuts are made at the correct angle and position to promote healing.
- Chainsaw safety – pre-use checks (chain tension, oil levels, chain brake function), correct cutting techniques (e.g., notch and back cut for felling), and maintenance.
- Aerial rescue – safely retrieving an injured or unconscious climber from a tree using a rescue system (e.g., lowering line, pulley system).
Exam Tips & Revision Strategies
- Ensure all practical evidence is clearly linked to assessment criteria; logbook entries, witness testimonies, and photographic evidence should explicitly reference the standards met.
- During practical assessments, verbalise your actions and risk assessments to demonstrate underpinning knowledge and decision-making processes.
Common Misconceptions & Mistakes to Avoid
- Confusing tree species with similar appearances, leading to incorrect pruning or treatment recommendations.
- Failing to conduct a thorough site and tree hazard assessment before climbing or using ladders.
- Incorrect chain tensioning on chainsaws, resulting in kickback risk or poor cutting performance.
Examiner Marking Points
- Award credit for demonstrating correct personal protective equipment (PPE) selection and inspection before commencing any tree work.
- Award credit for accurately identifying at least five common tree species and stating their key characteristics and pruning requirements.
- Evidence of safe chainsaw starting, operation, and handling in accordance with manufacturer guidelines and industry best practice.