Internal Tree Inspection Programme

Unlock your potential as an arboriculture professional with our Internal Tree Inspection Programme (ITIP).

Introduction

The Internal Tree Inspection Programme (ITIP) is a two-day course designed for experienced arboricultural professionals who wish to develop their skills in assessing the internal condition of trees.

It is aimed at those with substantial industry or consultancy experience within arboriculture (Professional Tree Inspection (PTI) is preferred), who are committed to best practice and have a strong interest in tree retention.

The course covers visual tree assessment, tomography, and microdrill techniques, providing practical training with industry-leading diagnostic equipment. Participants will gain the knowledge and confidence needed to interpret results effectively and make informed, evidence-based decisions in tree risk management.

ITIP training course

Overview in brief

The Internal Tree Inspection Programme (ITIP) is a two-day training course for arboricultural professionals, focusing on assessing the internal condition of trees. Combining classroom learning with hands-on practice, it covers Visual Tree Assessment (VTA), tomography, and microdrill techniques.

Through practical sessions and field exercises, participants gain experience using industry-standard equipment and develop the skills to interpret results accurately. The course is designed to build confidence in evidence-based tree risk assessment and supports best practice in professional arboriculture.



Course Objectives:

  • Understand the role of Visual Tree Assessment (VTA)

  • Learn the correct setup and operation of PiCUS 3 Sonic Tomograph, PiCUS TreeTronic 3 Electrical Resistance Tomography and IML Resi-PD400 Microdrill

  • Develop skills in interpreting tomograms and measurement curves to assess the internal condition of trees

  • Conduct structured field assessments, integrating VTA with diagnostic technology

  • Explore research-based approaches to hollowness assessment, failure criteria, and tree risk analysis

Cost: £595 + VAT

Who should attend?

  • Arborists with a keen interest in trees

  • Arboricultural Consultants

  • Tree Surveyors

  • Tree Officers

  • Tree Owners/Managers with some arboricultural knowledge

Day 1

Day 1 covers Visual Tree Assessment (VTA) and the use of sonic and electrical resistance tomographs. Participants take part in field exercises, group research, and practical sessions to explore the limitations and best practices of internal tree inspection.

Day 2

Day 2 introduces the IML Resi-PD400 Microdrill, focusing on drilling technique, measurement curve analysis, and research-based evaluation of inspection methods. The course combines theory with practical application, enabling candidates to confidently use these techniques in real-world situations.

  • Phil is a knowledgeable and approachable arboriculturist. Despite using the PiCUS for nearly ten years, I learned techniques and features I didn’t even know existed! His clear practical teaching made a real difference to how I now use the equipment

    Matt D, TO Leicester CC

  • As a Level 4 Tree Life student, I found the course highly valuable. Practical application of theory, excellent equipment, and knowledgeable instruction boosted my confidence—especially in data interpretation, which directly supports my work as a tree officer. Highly recommended.

    - J. Tyson, L4 Student and Tree Officer

  • I recently completed the Internal Tree Inspection Program and was thoroughly impressed. Phil was knowledgeable and approachable, and the well-organized materials made the challenging course engaging. I gained a valuable new skill and highly recommend it to anyone in tree care.

     - D. Weale – Westonbirt, The National Arboretum

  • I highly recommend the ITIP course to fellow Tree Officers. It provided hands-on experience with the PiCUS and Microdrill, boosting my confidence in interpreting data—especially when assessing reports submitted for works on protected trees.

    - Justin, TO Cotswolds DC - BSc (Hons), MArborA, TechArborA

  • I recently attended the pilot Internal Tree Inspection Programme and found it highly informative. It boosted my confidence in using and interpreting decay detection equipment, while highlighting both strengths and limitations. The supportive, hands-on learning environment made the experience especially valuable.

    Douglas Williams – Arboriculturist/Ecologist MSc, MArborA, ACIEEM, MRSB

  • Phil’s inaugural Internal Tree Inspection Program was a game-changer for our team. His knowledge, passion, and hands-on approach made the sessions both informative and engaging. We walked away with a deeper understanding of tree health and structural assessment, and the confidence to apply what we learned in the field.

     - Billy D - Westonbirt, The National Arboretum

  • Phil’s first Internal Tree Inspection Program was excellent—clear, engaging, and hands-on. He made technical topics easy to grasp, and I now feel much more confident assessing tree health.

     - Joe P - Westonbirt, The National Arboretum

  • Phil nailed the first Internal Tree Inspection Program—relaxed, practical, and packed with useful info. His passion made it engaging, and the hands-on learning with real trees made it truly effective.

    Chrissie D - Westonbirt, The National Arboretum

  • The internal tree inspection program greatly boosted my confidence in using and interpreting sonic tomography and resistance drilling. The engaging delivery kept me involved, and the course covered both equipment use and the critical nuances affecting accuracy. Highly recommended for anyone seeking reliable data and full competence.

    Mike Tucker – Director, Arb Tree Works Ltd

Register your interest today

Stay informed about the launch and secure your place on upcoming dates, or to arrange a private course for an internal team.