ISA Utility Specialist Exam Prep 2026 | 200 Practice Questions
with Answers & Explanations | Certification Study Guide
Section 1: Safety Enforcement & Regulatory Compliance (Questions 1–25)
1. In the U.S., enforcement of safety work rules resides with which agency?
A) Department of Energy (DOE)
B) Environmental Protection Agency (EPA)
C) Occupational Safety & Health Administration (OSHA)
D) Federal Energy Regulatory Commission (FERC)
Answer: C
Explanation: OSHA is the federal agency responsible for enforcing safety and health regulations
in the workplace, including for utility vegetation management workers.
2. Which organization publishes the voluntary safety standards for pruning, trimming, repairing,
maintaining, and removing trees?
A) ISA
B) ANSI
C) OSHA
D) NERC
Answer: B
Explanation: ANSI Z133 is the voluntary safety standard that provides guidelines for arboricultural
operations, including tree care near power lines.
3. A worker neglecting to wear cut-resistant chaps while operating a chainsaw is committing an
unsafe _____.
A) Condition
,B) Act
C) Practice
D) Omission
Answer: B
Explanation: An unsafe act is a human action that violates accepted safety procedures. The
employer failing to provide chaps creates an unsafe condition.
4. An employer failing to provide cut-resistant chaps is creating an unsafe _____.
A) Act
B) Practice
C) Condition
D) Environment
Answer: C
Explanation: An unsafe condition refers to a physical or environmental hazard that is not directly
caused by worker behavior but by employer oversight or equipment deficiency.
5. True or False: OSHA standards supersede ANSI standards in all workplace safety matters.
Answer: True
Explanation: OSHA standards are legally enforceable federal regulations, while ANSI standards
are voluntary industry guidelines. However, ANSI standards often reflect industry best practices
and may be cited by OSHA.
6. What is the primary purpose of a Job Safety Analysis (JSA) in utility vegetation management?
A) To evaluate employee performance
B) To identify potential hazards before work begins
C) To document equipment inventory
D) To schedule maintenance cycles
,Answer: B
Explanation: A JSA breaks down a job into steps and identifies potential hazards and safe
procedures before work begins, reducing the risk of injury.
7. True or False: Personal Protective Equipment (PPE) is only required when working within 10
feet of energized power lines.
Answer: False
Explanation: PPE is required for all tree care operations, including hard hats, eye protection,
hearing protection, gloves, and appropriate footwear, regardless of proximity to power lines.
8. Which of the following is a minimum approach distance (MAD) requirement for unqualified
workers?
A) 5 feet
B) 10 feet
C) 15 feet
D) 20 feet
Answer: B
Explanation: OSHA requires unqualified workers to maintain a minimum approach distance of 10
feet from energized power lines up to 50 kV.
9. True or False: Only qualified line‑clearance arborists are permitted to work within the minimum
approach distance (MAD) of energized lines.
Answer: True
Explanation: Qualified line‑clearance arborists have specific training and are authorized to work
within MAD, whereas unqualified workers must stay outside that zone.
10. What does the acronym “PPE” stand for in utility safety?
A) Professional Protective Equipment
B) Personal Protective Equipment
C) Primary Protective Ensemble
, D) Powerline Protective Equipment
Answer: B
Explanation: PPE includes hard hats, safety glasses, hearing protection, gloves, chaps, and other
gear designed to protect workers from injury.
11. True or False: Hearing protection is required when operating a chainsaw for extended periods.
Answer: True
Explanation: Chainsaws typically produce noise levels above 85 decibels, and prolonged exposure
can cause permanent hearing loss.
12. What is the purpose of a tailgate safety meeting (toolbox talk)?
A) To review the day’s work plan and hazards
B) To inspect equipment
C) To assign tasks
D) To evaluate worker performance
Answer: A
Explanation: Tailgate meetings are short, focused safety briefings held at the job site before work
begins to discuss specific hazards and safe practices.
13. Which federal agency has jurisdiction over interstate power line reliability standards?
A) DOE
B) EPA
C) NERC
D) FERC
Answer: D
Explanation: FERC oversees the reliability of the nation's bulk power system and approves
mandatory NERC reliability standards.
with Answers & Explanations | Certification Study Guide
Section 1: Safety Enforcement & Regulatory Compliance (Questions 1–25)
1. In the U.S., enforcement of safety work rules resides with which agency?
A) Department of Energy (DOE)
B) Environmental Protection Agency (EPA)
C) Occupational Safety & Health Administration (OSHA)
D) Federal Energy Regulatory Commission (FERC)
Answer: C
Explanation: OSHA is the federal agency responsible for enforcing safety and health regulations
in the workplace, including for utility vegetation management workers.
2. Which organization publishes the voluntary safety standards for pruning, trimming, repairing,
maintaining, and removing trees?
A) ISA
B) ANSI
C) OSHA
D) NERC
Answer: B
Explanation: ANSI Z133 is the voluntary safety standard that provides guidelines for arboricultural
operations, including tree care near power lines.
3. A worker neglecting to wear cut-resistant chaps while operating a chainsaw is committing an
unsafe _____.
A) Condition
,B) Act
C) Practice
D) Omission
Answer: B
Explanation: An unsafe act is a human action that violates accepted safety procedures. The
employer failing to provide chaps creates an unsafe condition.
4. An employer failing to provide cut-resistant chaps is creating an unsafe _____.
A) Act
B) Practice
C) Condition
D) Environment
Answer: C
Explanation: An unsafe condition refers to a physical or environmental hazard that is not directly
caused by worker behavior but by employer oversight or equipment deficiency.
5. True or False: OSHA standards supersede ANSI standards in all workplace safety matters.
Answer: True
Explanation: OSHA standards are legally enforceable federal regulations, while ANSI standards
are voluntary industry guidelines. However, ANSI standards often reflect industry best practices
and may be cited by OSHA.
6. What is the primary purpose of a Job Safety Analysis (JSA) in utility vegetation management?
A) To evaluate employee performance
B) To identify potential hazards before work begins
C) To document equipment inventory
D) To schedule maintenance cycles
,Answer: B
Explanation: A JSA breaks down a job into steps and identifies potential hazards and safe
procedures before work begins, reducing the risk of injury.
7. True or False: Personal Protective Equipment (PPE) is only required when working within 10
feet of energized power lines.
Answer: False
Explanation: PPE is required for all tree care operations, including hard hats, eye protection,
hearing protection, gloves, and appropriate footwear, regardless of proximity to power lines.
8. Which of the following is a minimum approach distance (MAD) requirement for unqualified
workers?
A) 5 feet
B) 10 feet
C) 15 feet
D) 20 feet
Answer: B
Explanation: OSHA requires unqualified workers to maintain a minimum approach distance of 10
feet from energized power lines up to 50 kV.
9. True or False: Only qualified line‑clearance arborists are permitted to work within the minimum
approach distance (MAD) of energized lines.
Answer: True
Explanation: Qualified line‑clearance arborists have specific training and are authorized to work
within MAD, whereas unqualified workers must stay outside that zone.
10. What does the acronym “PPE” stand for in utility safety?
A) Professional Protective Equipment
B) Personal Protective Equipment
C) Primary Protective Ensemble
, D) Powerline Protective Equipment
Answer: B
Explanation: PPE includes hard hats, safety glasses, hearing protection, gloves, chaps, and other
gear designed to protect workers from injury.
11. True or False: Hearing protection is required when operating a chainsaw for extended periods.
Answer: True
Explanation: Chainsaws typically produce noise levels above 85 decibels, and prolonged exposure
can cause permanent hearing loss.
12. What is the purpose of a tailgate safety meeting (toolbox talk)?
A) To review the day’s work plan and hazards
B) To inspect equipment
C) To assign tasks
D) To evaluate worker performance
Answer: A
Explanation: Tailgate meetings are short, focused safety briefings held at the job site before work
begins to discuss specific hazards and safe practices.
13. Which federal agency has jurisdiction over interstate power line reliability standards?
A) DOE
B) EPA
C) NERC
D) FERC
Answer: D
Explanation: FERC oversees the reliability of the nation's bulk power system and approves
mandatory NERC reliability standards.
