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Arc Flash

Altran is committed to helping our clients meet all requirements for Electrical Safety in the Workplace.  Our staff has an in-depth understanding of requirements in NFPA 70E, IEEE Standard 1584, and NESC C2.  Altran has been developing Arc Flash studies for more than a decade. (The chronology of Arc Flash requirements reveals that the issue began in the petro-chemical industry, was formalized for other industries with the issuance of NFPA 70E as a standard in 2004, and was formalized for electric utilities with the issuance of NESC C2 in 2007).

In simple terms, Arc Flash studies consider available energy, working distance, and fault clearing time in the unlikely event that an electrical arc would occur when workers are repositioning electrical components.

Altran is prepared to calculate the energy that can be released by an inadvertent, arcing type, short circuit; to calculate the energy that might impinge on nearby workers; and to specify the appropriate levels of protective clothing required.

Our staff has developed arc flash studies for a wide variety of clients.  We have:

  • Walked down facilities to gain an understanding of equipment installations
  • Prepared short circuit studies that document short circuit current levels
  • Reviewed fuse, circuit breaker, and protective relay time current curves to determine fault clearing times
  • Developed studies to document incident energy levels
  • Recommended flash protection boundaries
  • Recommended protective clothing
  • Presented training to explain key principles of arc flash hazards
  • Assisted in the placement of Arc Flash warning signs designed to alert workers

Altran has the experience to develop and enhance Electrical Safety in the Workplace programs.  We can relate to your staff and explain in practical terms the expectation that everyone is entitled to a safe and productive workplace.  We can provide examples of incidents and near misses that, although unlikely, highlight the need for diligence and care as we perform our daily work activities and the need to be aware of potential arc flash hazards.

 

Addressing Arc Flash Hazard

OSHA 1910.132(d) and 1926.28(a) requires that the "…employer shall assess the workplace to determine if hazards are present, or are likely to be present, which necessitate the use of personal protective equipment (PPE)."

 

Potential Exposure to Arc Flash

Although it may appear that arc flash incidents are uncommon, statistics show that the damage they cause is considerable. Bureau of Labor Statistics data shows several thousand cases of reported days away from work due to electrical burns, electrocution or electrical shock injuries, fires and explosions.

The exposure to arc flash depends on the following:
  • Arc flash hazard is a potential danger to workers near and around live exposed electrical parts
  • Work performed on exposed live equipment
  • Complexity of the task performed
  • Space restrictions
  • Tools and PPE used
  • Condition of equipment

 

Arc Flash Hazard Analysis Services

  • Evaluation of your electrical facilities.
  • Create short-circuit study
  • Create protective-device coordination study.
  • Updates/Create Facility One Line Diagrams.
  • Develop Arc Flash Hazard Analysis.
  • Determination of the incident energy exposure to the worker within the flash protection boundary in order to satisfy the requirements of NFPA 70E.
  • Complies with requirements of OSHA, NFPA-70E and insurance requirements.
Altran Can Help You Comply: • Arc Flash Awareness Training
• Overview of NESC, NEC, NFPA 70E, OSHA & IEEE 1584
• Comprehensive Arc Flash Analysis of your facility
• Evaluation of your electrical facilities.
• Create short-circuit study
• Create protective-device coordination study.
• Update/Create Facility One Line Diagrams.
• Develop Arc Flash Hazard Analysis.
• Determination of the incident energy exposure to the worker within the flash protection boundary.

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