Arc Flash Hazard Analysis

Arc flash hazard, as defined by NFPA 70E, is “A source of possibly injury or damage to health associated with the release of energy caused by an electric arc.”

Since the early 2000’s PCI Skanska has performed power system studies including arc flash hazard analysis. This important study allows clients to see a full evaluation of their electrical distribution system. This evaluation is used for proper equipment sizing, coordination for reliability and provides the necessary safety information allowing employers and employees to protect themselves when exposed to energized equipment.

Increased government regulations, new research discoveries relating to electrical hazards, more advanced engineering tools and improved Personal Protective Equipment (PPE) have combined to increase the need for improved safety in the design, operation and maintenance of a modern utility and industrial electrical power system.


Dangers of Arc Flash

During an arc flash incident temperatures can reach up to 35,000°F with major hazards including thermal radiation, pressure waves and flying projectiles.


The benefits of a power system study, including an arc flash hazard analysis are:

  • Incident energy and arc flash boundaries following the NFPA 70E and IEEE 1584 standards
  • Specifying the proper level of PPE clothing and providing a safer working environment
  • Field verification of protective devices, motors and cables
  • Custom arc flash labels
  • Recommendations for reducing arc flash levels
  • Employee awareness training

Typical Power System Study Engineering Services:

  • Field verification
  • Short circuit study
  • Protective device coordination study
  • Arc flash study
  • Findings and recommendations relating to the study
  • Arc flash hazard labeling
  • Power one-line diagrams
  • Equipment evaluation studies
  • Electrical safety training (NFPA 70E)
  • Safety procedure evaluation

Completing a power system study for electrical distribution provides our clients with the ability to fully evaluate their electrical infrastructure system as well as provide a safe work environment for their employees.

Typical market sectors for a power system study include:

  • Power generation/distribution
  • Chemical/plastics
  • Pharmaceuticals
  • Food/beverage
  • Solar
  • Water/wastewater
  • Electrical equipment manufacturer (OEM)
  • Oil/gas
  • Metals
  • Healthcare
  • Education
  • Commercial buildings