Arc Flash Analysis

What is an Arc Flash Hazard Analysis?

An arc flash is an explosion of electrical energy that can cause substantial damage, injury and death.

Analyzing the arc flash hazards is critical to worker and workplace safety. NFPA 70E calls for an arc flash hazard analysis and risk assessment procedure to maintain a safe workplace.

An arc flash hazard analysis, per NFPA 70E, is a study investigating a worker’s potential exposure to arc flash energy, conducted for the purpose of injury prevention and the determination of safe work practices, arc flash boundary and the appropriate levels of personal protective equipment (PPE).

There are three steps to completing an arc flash hazard analysis as outlined by NFPA 70E Article 130.5 (2015 Edition):

1) Arc Flash Boundary - When an arc flash hazard exists, an approach limit at a distance from a prospective arc source within which a person could receive a second degree burn if an electrical arc flash were to occur is known as an arc flash boundary. Incident energy and arc flash boundary calculation methods are provided in Annex D.

2) PPE for Application - Within an arc flash boundary, the amount of personal protective equipment (PPE) is based on either an incident energy analysis or Hazard/Risk Categories. Table H.3(b) in Annex H of the NFPA 70E offers information on selection of arc-rated clothing and other PPE.

3) Equipment Labeling - Electrical equipment that is likely to require examination, adjustment, servicing or maintenance shall be field marked with a label containing at least one of the following:

  • Incident energy as well as working distance or arc flash PPE category
  • Nominal system voltage
  • Arc flash boundary

Why Should I Choose Salisbury Assessment Solutions (SAS) For My Arc Flash Hazard Analysis?

This process of data collection, calculation, analysis, PPE selection and labeling is a critical and complex task. The best way to avoid compliance and regulation issues and protect your workers is to allow an experienced, qualified electrical engineering team complete the analysis and work with you on creating and maintaining an electrical safety program.

SAS is a highly trained team of experts that will work with you every step of the way to an electrically safe workplace. SAS offers assurance that your workplace is compliant and that your workers are protected.