CTSP Electrical Hazards and Utility Line Safety 3

Question 1

A co-worker is receiving an electrical shock and remains in contact with an energized source. The correct immediate action is to:

Accepted Answer

Do NOT touch the worker; de-energize the source or use a non-conductive object to separate them from the conductor

Answer

Touching a worker still in contact with an energized source will also electrocute the rescuer; the source must be de-energized or a dry, non-conductive object used to break contact first.

Question 2

After a worker receives an electrical shock and reports feeling unharmed, the supervisor should:

Accepted Answer

Have the worker evaluated by medical personnel, as delayed cardiac arrhythmia can occur hours after shock

Answer

Electrical current can cause delayed cardiac arrhythmias, internal burns, and neurological effects that may not be immediately apparent, making prompt medical evaluation mandatory.

Question 3

Which condition significantly increases the electrical conductivity of a tree and elevates the hazard when working near energized conductors?

Accepted Answer

Moisture from rain, dew, or active sap flow

Answer

Moisture dramatically lowers the resistance of wood and bark, making a wet tree a far more efficient conductor of electricity than a dry one.

Question 4

An 'arc flash' hazard in electrical safety is best described as:

Accepted Answer

An explosive release of energy from an electrical arc producing intense heat, light, pressure, and molten metal

Answer

Arc flash releases tremendous energy in milliseconds, generating temperatures that can exceed 35,000°F and causing severe burns, blast injuries, and hearing damage.

Question 5

Rubber insulating PPE (gloves, blankets, sleeves) used near energized conductors must be:

Accepted Answer

Inspected before each use and tested at intervals specified by applicable standards

Answer

Rubber insulating equipment must be visually inspected before every use for cuts, punctures, or ozone deterioration, and electrically tested at regular intervals per ASTM and OSHA requirements.

CTSP - Certified Treecare Safety Professional Practice Test

CTSP - Certified Treecare Safety Professional Practice Test

CTSP Electrical Hazards and Utility Line Safety 3