ESC Electrical Hazard Identification & Risk Assessment 2

Question 1

Which condition creates the greatest risk of electric shock when working near energized equipment?

Accepted Answer

Working in wet or damp conditions

Answer

Moisture dramatically lowers the body's resistance, greatly increasing the risk and severity of electric shock.

Question 2

What does the term 'flash protection boundary' refer to in arc flash risk assessment?

Accepted Answer

The distance beyond which PPE is not required to protect against arc flash burns

Answer

The flash protection boundary is the distance at which a worker could receive a second-degree burn from an arc flash event without appropriate PPE.

Question 3

A risk matrix is used in electrical safety to:

Accepted Answer

Combine the likelihood of an event with its potential severity

Answer

A risk matrix evaluates both the probability of an incident occurring and the severity of its outcome to prioritize hazard controls.

Question 4

Which of the following is an example of an administrative control for electrical hazards?

Accepted Answer

Requiring two-person buddy systems for energized work

Answer

Administrative controls are procedural or policy-based measures, such as requiring a buddy system, rather than physical modifications.

Question 5

What is the primary purpose of a Job Hazard Analysis (JHA) before electrical work begins?

Accepted Answer

To identify potential hazards and determine safe work procedures

Answer

A JHA systematically identifies hazards associated with each task step so that appropriate protective measures can be implemented before work starts.

(ESC) Electrical Safety Certification Practice Test