ISA Utility Specialist 375 Questions and Answers New Year Update 2024 Solved 100%|45 Pages
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Course
ISA
Institution
ISA
Accident - ️️discredited term for unplanned, undesirable event that could result in unintentional injury/property damage attributed to fate/bad luck
Accident Pyramid - ️️illustration of Herbert Heinrich principles of accident prevention-----bottom has thousands of unsafe acts/conditions,...
Accident - ✔ ✔ discredited term for unplanned, undesirable event that could result in unintentional
injury/property damage attributed to fate/bad luck
Accident Pyramid - ✔ ✔ 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 - ✔ ✔ accounting methodology that records revenues & costs when they occur
ACSR - ✔ ✔ aluminum conductor steel reinforced
Action Threshold - ✔ ✔ 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 - ✔ ✔ structured face to face communication technique that improves performance
& increases understanding btwn people
-use persons name
-paraphrase their message
Acute Toxicity - ✔ ✔ adverse effects resulting from exposure to a single dose or exposure to multiple
doses of a substance over short time frame
Aerial Application - ✔ ✔ VM application of herbicide using aircraft(helicopters/fixed wing)
,Aerial LIft - ✔ ✔ truck, logging skidder or vehicle mounted w hydraulic boom supported bucket or
semi-enclosed working platform used to elevate workers
AHAS Inhibitors - ✔ ✔ 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 - ✔ ✔ 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 - ✔ ✔ ability of some plants including certain grasses, to release chems that suppress
other plant species growing around them
ALS Inhibitors - ✔ ✔ chemical class of commonly used IVM herbicides in which the mode of action
inhibits a key enzyme
-acetolactate synthase
Alternating Current(AC) - ✔ ✔ electric current that reverses its direction many times per second at
regular intervals typically used in power supplies
Aluminum Conductor Steel-Reinforced Cable(ACSR) - ✔ ✔ 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) - ✔ ✔ 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) - ✔ ✔ American National Standard for Tree Care Operations----Tree/Shrub/Wood
Plant Maintenance
Approach Distance - ✔ ✔ 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 - ✔ ✔ 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
-may immediately recharge the circuit several times at adjustable time delay----2/3 operations within
seconds before they open permanently
Auxin - ✔ ✔ 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 - ✔ ✔ 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 - ✔ ✔ electric flow in an unintended direction thru a process whereby de-energized lines
become energized from an external source----home generator
Bargaining Unit - ✔ ✔ group of workers rep by a union local
Basal Application - ✔ ✔ herbicide application made at the bottom 12 in of stem & root collar with an
herbicide in an oil carrier
Behavior-Based - ✔ ✔ theory of industrial accident prevention pioneered by Herbert Heinrich that
considers the overwhelming majority of incidents to be caused by unsafe acts
Biological Methods - ✔ ✔ 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
Border Zone - ✔ ✔ section of a transmission/pipeline ROW that extends from wire/pipe zone to the
ROW edge
-managed to promote a low growing plant community of forms, tall shrubs & low growing trees below a
specified height(25 ft)
Branch Bark Ridge - ✔ ✔ raised strip of bark at the top of a branch union where the growth &
expansion of trunk + parent stem & adjoining branch push the bark into the ridge
Branch Collar - ✔ ✔ area where a subdominant branch joins another branch or trunk that is created
by overlapping vascular tissue from both the branch & trunk
-typically enlarged at the base of the branch
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