People with low skills and knowledge of a task often overestimate their ability to accomplish it. TCIA graphic.

The Dunning-Kruger Effect and Educating Clients

Everyone providing pruning or removal quotes has come across this situation. You pull up to the next appointment at a house in a well-wooded neighborhood. The homeowner greets you with slight disdain as you meet at the door. You walk together through the house and exit through the sliding door into the backyard, which is […]

Class E helmets provide only a measure of protection.

Part 6: Work Practices Near an Electrical Hazard

Part 1 of Chapter 4, Safe Work Practices (TCI Magazine, March 2024), covered the job hazard analysis (JHA), work plan and job briefing. This article, Part 2 of Chapter 4, Safe Work Practices, focuses on arboricultural operations near overhead power and communication lines. Personal protective equipment Personal protective equipment (PPE) – helmet, eye protection, hearing […]

Conducting a job briefing

Part 5: Work Practices Near Utility Conductors: Different Categories of Tree Workers

Note: The following article includes the proposed changes to “Section 3, Electrical Hazard” of the ANSI Z133 safety standard. This next Z edition will be published during 2024, and these “Electrical Level” categories will be subject to change. Arboricultural operations are often conducted within a multitude of hazards. The daily life of an arborist is […]

aerial-device operator makes direct contact with conductors

EHAP Revision, Part 4,Chapter 3: Recognizing Electrical Hazards

Exposure to electric current is one of the many hazard sources during arboricultural operations. But electricity is one of the most unforgiving of these sources. A review of utility data shows that one in four contacts that resulted in an injury to an arborist working near overhead power lines was fatal. While contact with electrical […]

Spool insulators

EHAP Revision Series, Part 3: Switching Devices, Support and Other Utility Hardware

This is a continuation of the discussion of the electrical-system equipment found along distribution lines. One of the requirements for arborists working in proximity to an electrical hazard – within 10 feet of the lines – is familiarity with the equipment that shares the poles with the lines. The electrical-system equipment can be divided into […]

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