ISA UTILITY SPECIALIST EXAM
QUESTIONS AND ANSWERS. VERIFIED
2026.
Accident - ANS discredited term for unplanned, undesirable event that could result in
unintentional injury/property damage attributed to fate/bad luck
Accident Pyramid - ANS illustration of Herbert Heinrich principles of accident prevention-----
bottom has thousands of unsafe acts/conditions, led to 300 close calls, 29 minor injuries &
ultimately one major fatality/injury at top
Accrual Accounting - ANS accounting methodology that records revenues & costs when they
occur
ACSR - ANS aluminum conductor steel reinforced
Action Threshold - ANS point at which the level of incompatible plant species, density, height,
location, condition threatens the stated management objectives & requires implementation of
control method
Active Listening - ANS structured face to face communication technique that improves
performance & increases understanding btwn people
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,-use persons name
-paraphrase their message
Acute Toxicity - ANS adverse effects resulting from exposure to a single dose or exposure to
multiple doses of a substance over short time frame
Aerial Application - ANS VM application of herbicide using aircraft(helicopters/fixed wing)
Aerial LIft - ANS truck, logging skidder or vehicle mounted w hydraulic boom supported
bucket or semi-enclosed working platform used to elevate workers
AHAS Inhibitors - ANS chemical class of commonly IVM herbicides in which the mode of
action inhibits key botanical enzyme
-acetohdroxycacid synthase(AHAS)----biosynthesis of critical amino acids
Airbrake Switch - ANS manually operated switch----deployed where two circuits meet or
circuit portion from an energized feeder
-not designed to auto interrupt electrical load or be used as line protection from overload, short
circuit or fault
Allelopathy - ANS ability of some plants including certain grasses, to release chems that
suppress other plant species growing around them
ALS Inhibitors - ANS chemical class of commonly used IVM herbicides in which the mode of
action inhibits a key enzyme
-acetolactate synthase
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,Alternating Current(AC) - ANS electric current that reverses its direction many times per
second at regular intervals typically used in power supplies
Aluminum Conductor Steel-Reinforced Cable(ACSR) - ANS energize cable constructed from
aluminum wire stranded around a steel core
-lightweight, low cost
-tendency to stretch when heated----high electrical load or high temp
-to minimize stretch/add strength----steel core is added
Ampere(amp, A) - ANS measure of current
- 1 A = charge carried by 6.25 x 10^18 electrons moving past a given point in one second
-ANSI A300(Part 7) - ANS American National Standard for Tree Care Operations----
Tree/Shrub/Wood Plant Maintenance
-IVM---utility ROW
ANSI Z133 - ANS ANSI Arboricultural Operations----Safety Reqs
-safety standard of practice for tree care
Approach Distance - ANS minimum distance that must be kept btwn conductors/energized
equipment & qualified line clearance personnel & non-qualified & bodies/tools
-approach distance vary w qualifications of personnel & voltages
Automatic Line Recloser - ANS circuit breaker equipped w mechanism that auto close the
breaker after it has been opened due to a. fault
-designed to reset quickly to give the cause of a fault opp to clear
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, -may immediately recharge the circuit several times at adjustable time delay----2/3 operations
within seconds before they open permanently
Auxin - ANS plant growth regulator or substance that promotes/influences the growth &
development of plants
-produced at sites where cells are dividing primarily in the shoot tips
-auxin like compounds may be produced synthetically
Auxin Transport Inhibitors - ANS class of selective herbicides that disrupt auxin transport
-auxin transport obstruction causes unnatural concentration of auxin in meristematic shoots &
roots, disturbing the auxin tolerances req for normal plant growth
Back Feed - ANS electric flow in an unintended direction thru a process whereby de-
energized lines become energized from an external source----home generator
Bargaining Unit - ANS group of workers rep by a union local
Basal Application - ANS herbicide application made at the bottom 12 in of stem & root collar
with an herbicide in an oil carrier
Behavior-Based - ANS theory of industrial accident prevention pioneered by Herbert Heinrich
that considers the overwhelming majority of incidents to be caused by unsafe acts
Biological Methods - ANS management of vegetation by establishment & control of
compatible stable plant communities using plant competition, allelopathy, animals, insects,
pathogens
-cover-type conversion is a type of biological control
4 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
QUESTIONS AND ANSWERS. VERIFIED
2026.
Accident - ANS discredited term for unplanned, undesirable event that could result in
unintentional injury/property damage attributed to fate/bad luck
Accident Pyramid - ANS illustration of Herbert Heinrich principles of accident prevention-----
bottom has thousands of unsafe acts/conditions, led to 300 close calls, 29 minor injuries &
ultimately one major fatality/injury at top
Accrual Accounting - ANS accounting methodology that records revenues & costs when they
occur
ACSR - ANS aluminum conductor steel reinforced
Action Threshold - ANS point at which the level of incompatible plant species, density, height,
location, condition threatens the stated management objectives & requires implementation of
control method
Active Listening - ANS structured face to face communication technique that improves
performance & increases understanding btwn people
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,-use persons name
-paraphrase their message
Acute Toxicity - ANS adverse effects resulting from exposure to a single dose or exposure to
multiple doses of a substance over short time frame
Aerial Application - ANS VM application of herbicide using aircraft(helicopters/fixed wing)
Aerial LIft - ANS truck, logging skidder or vehicle mounted w hydraulic boom supported
bucket or semi-enclosed working platform used to elevate workers
AHAS Inhibitors - ANS chemical class of commonly IVM herbicides in which the mode of
action inhibits key botanical enzyme
-acetohdroxycacid synthase(AHAS)----biosynthesis of critical amino acids
Airbrake Switch - ANS manually operated switch----deployed where two circuits meet or
circuit portion from an energized feeder
-not designed to auto interrupt electrical load or be used as line protection from overload, short
circuit or fault
Allelopathy - ANS ability of some plants including certain grasses, to release chems that
suppress other plant species growing around them
ALS Inhibitors - ANS chemical class of commonly used IVM herbicides in which the mode of
action inhibits a key enzyme
-acetolactate synthase
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,Alternating Current(AC) - ANS electric current that reverses its direction many times per
second at regular intervals typically used in power supplies
Aluminum Conductor Steel-Reinforced Cable(ACSR) - ANS energize cable constructed from
aluminum wire stranded around a steel core
-lightweight, low cost
-tendency to stretch when heated----high electrical load or high temp
-to minimize stretch/add strength----steel core is added
Ampere(amp, A) - ANS measure of current
- 1 A = charge carried by 6.25 x 10^18 electrons moving past a given point in one second
-ANSI A300(Part 7) - ANS American National Standard for Tree Care Operations----
Tree/Shrub/Wood Plant Maintenance
-IVM---utility ROW
ANSI Z133 - ANS ANSI Arboricultural Operations----Safety Reqs
-safety standard of practice for tree care
Approach Distance - ANS minimum distance that must be kept btwn conductors/energized
equipment & qualified line clearance personnel & non-qualified & bodies/tools
-approach distance vary w qualifications of personnel & voltages
Automatic Line Recloser - ANS circuit breaker equipped w mechanism that auto close the
breaker after it has been opened due to a. fault
-designed to reset quickly to give the cause of a fault opp to clear
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, -may immediately recharge the circuit several times at adjustable time delay----2/3 operations
within seconds before they open permanently
Auxin - ANS plant growth regulator or substance that promotes/influences the growth &
development of plants
-produced at sites where cells are dividing primarily in the shoot tips
-auxin like compounds may be produced synthetically
Auxin Transport Inhibitors - ANS class of selective herbicides that disrupt auxin transport
-auxin transport obstruction causes unnatural concentration of auxin in meristematic shoots &
roots, disturbing the auxin tolerances req for normal plant growth
Back Feed - ANS electric flow in an unintended direction thru a process whereby de-
energized lines become energized from an external source----home generator
Bargaining Unit - ANS group of workers rep by a union local
Basal Application - ANS herbicide application made at the bottom 12 in of stem & root collar
with an herbicide in an oil carrier
Behavior-Based - ANS theory of industrial accident prevention pioneered by Herbert Heinrich
that considers the overwhelming majority of incidents to be caused by unsafe acts
Biological Methods - ANS management of vegetation by establishment & control of
compatible stable plant communities using plant competition, allelopathy, animals, insects,
pathogens
-cover-type conversion is a type of biological control
4 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
