Arc Flash Risk Assessment

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Questions and Answers

What is the primary purpose of performing an arc flash risk assessment?

  • To identify arc flash hazards (correct)
  • To assess the design of electrical equipment
  • To establish the arc flash boundary
  • To determine the operating condition of electrical equipment

What should be considered when estimating the likelihood and severity of injury or damage to health in an arc flash risk assessment?

  • The type of PPE available for use
  • The ambient temperature in the vicinity of the electrical equipment
  • The design of the electrical equipment and its operating time (correct)
  • The number of personnel working in the area

What should be determined when additional protective measures are required, including the use of PPE?

  • Appropriate safety-related work practices (correct)
  • The color of the warning labels on the electrical equipment
  • The material of construction for the electrical equipment
  • The distance from the electrical equipment

According to the informational note, in what situations do closed doors typically not provide enough protection to eliminate the need for PPE?

<p>When the state of the equipment is known to readily change (B)</p> Signup and view all the answers

Which method shall be used for the selection of arc flash PPE?

<p>Both methods shall be used on the same piece of equipment (B)</p> Signup and view all the answers

What is the distance at which the arc flash boundary shall be determined?

<p>Both a and b (B)</p> Signup and view all the answers

What shall be used by the employee based on the incident energy exposure associated with the specific task?

<p>Both arc-rated clothing and other PPE (A)</p> Signup and view all the answers

How often should the incident energy analysis be reviewed for accuracy?

<p>At intervals not to exceed 5 years (D)</p> Signup and view all the answers

What is used as the basis for the incident energy exposure level?

<p>Working distance of the employee’s face and chest areas from a prospective arc source (B)</p> Signup and view all the answers

When can the arc flash boundary be determined by Table 130.7(C)(15)(a) or Table 130.7(C)(15)(b)?

<p>When there are specific requirements for using these tables (C)</p> Signup and view all the answers

What is not permitted regarding the results of an incident energy analysis for specifying an arc flash PPE category?

<p>Specifying an arc flash PPE category in Table 130.7(C)(15)(c) (B)</p> Signup and view all the answers

What should be used for any parts of the body that are closer than the working distance at which the incident energy was determined?

<p>Additional PPE based on the incident energy exposure (B)</p> Signup and view all the answers

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