CATS - Certified Arborist Tree Service of Albuquerque Arborist Safety and ANSI Questions and Answers

Question 1

An arborist crew is performing pruning work near a secondary distribution line with a voltage of 7.2 kV (7,200 volts). A homeowner, who is an unqualified person according to ANSI Z133, walks into the work zone. What is the minimum approach distance (MAD) that must be maintained between the homeowner and the energized conductor?

Accepted Answer

10 feet

Answer

ANSI Z133 establishes specific Minimum Approach Distances (MAD) to protect individuals from electrical hazards. For unqualified persons, such as the general public or ground workers without specific electrical hazard training, the MAD for energized conductors with a phase-to-phase voltage up to 50 kV is 10 feet.

Question 2

According to ANSI Z133 safety standards, which of the following is NOT considered mandatory personal protective equipment (PPE) for an arborist operating a chainsaw on the ground?

Accepted Answer

Wire-core lanyard

Answer

ANSI Z133 mandates specific PPE for chainsaw operators to mitigate common injuries. This includes head protection, eye protection, hearing protection, and cut-resistant leg protection for ground operations. A wire-core lanyard is a component of a climbing or work-positioning system and is not required for ground-based chainsaw work.

Question 3

A certified arborist is setting up a work site for a tree removal adjacent to a public sidewalk. According to ANSI Z133 standards for work-site safety, what is the primary purpose of establishing a clearly marked drop zone?

Accepted Answer

To prevent pedestrians and unauthorized personnel from entering the area where overhead hazards exist.

Answer

ANSI Z133 requires that the work area, and specifically the drop zone, be secured to protect people and property from the hazards of falling limbs and debris. This involves using cones, signs, or barriers to control the area directly beneath the work being performed and prevent unauthorized entry.

Question 4

ANSI Z133 mandates that a job briefing be conducted before any tree care operation begins. In addition to discussing the work plan and potential hazards, what critical safety component must be confirmed as available on-site?

Accepted Answer

A working means of communication and emergency contact numbers.

Answer

Before any job begins, ANSI Z133 requires a job briefing that includes establishing emergency procedures. A fundamental part of this is ensuring there is a reliable way to contact emergency services and that relevant phone numbers are readily available for all crew members.

Question 5

Which of the following actions is a direct violation of ANSI Z133 safety standards for operating a brush chipper?

Accepted Answer

Wearing loose-fitting clothing or gloves with cuffs.

Answer

The ANSI Z133 standard explicitly prohibits wearing loose-fitting clothing, jewelry, or cuffed gloves when operating a brush chipper. These items can become entangled in the material being fed into the machine, creating a severe caught-in hazard that can pull the operator toward the infeed rollers.

(CATS) Certified Arborist Tree Service of Albuquerque Practice Test

(CATS) Certified Arborist Tree Service of Albuquerque Practice Test

CATS - Certified Arborist Tree Service of Albuquerque Arborist Safety and ANSI Questions and Answers