Fundamentals of Arc Flash Safety, Calculations, and Regulations for Utilities
February 12-13, 2018
Denver, CO

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Arc flashes release energy hotter than the surface of the sun, spray molten metal and create sound blasts as loud as a gun. Each year, thousands of arc flash incidents occur, resulting in burn injuries, hospitalizations, and fatalities.

Arc flashes occur when a flashover of electric current leaves its intended path and travels through the air from one conductor to another or to ground, according to the Occupational Safety and Health Administration (OSHA).

This course will provide attendees with the experience, tools and education that will help them to conduct the arc flash assessments that electric utilities are required perform in order protect their field workforce from the dangers of arc flash.

This course will help participants to understand the current rules and regulations that require the employer to assess the workplace to determine which employees are exposed to hazards from flames or from electric arcs. This course will help the participants choose a method of calculating incident heat energy that reasonably predicts the incident energy to which the employee would be exposed.

By drawing from personal experience, the instructor will answer important questions regarding arc flash hazard assessment, including, but not limited to:

  • What regulations require arc flash assessment?
  • What methods are available to perform arc flash hazard analysis?
  • Single phase or three phase?
  • Are all my employees exposed?
  • What type of work exposes an employee to a reasonable likelihood that an arc flash could occur?
  • Should I use the table method or calculation method?
  • After the assessment, what clothing is required?
  • What information am I required to give my contractors?

Learning Outcomes

  • Explain the arc flash hazard potential
  • Explain the regulatory requirements
  • Define which regulation applies to your company
  • Define arc flash assessment methods
  • Discuss how to make estimates over multiple system areas
  • Explain how to choose between the table method and the calculation method of arc flash hazards assessment
  • Explain how to identify those employees who may as a result of the work they perform be exposed and how to determine the probability that an arc will occur
  • Discuss how to select a reasonable distance from the arc to the employee
  • Discuss how to select a reasonable arc gap
  • Identify when to use single phase vs three phase calculations
  • Discuss how to reduce arc flash clothing costs
  • Explain arc flash clothing layering



EUCI has been accredited as an Authorized Provider by the International Association for Continuing Education and Training (IACET).  In obtaining this accreditation, EUCI has demonstrated that it  complies with the ANSI/IACET Standard which is recognized internationally as a standard of good practice. As a result of their Authorized Provider status, EUCI is authorized to offer IACET CEUs for its programs that qualify under the ANSI/IACET Standard.

EUCI is authorized by IACET to offer 1.0 CEUs for this event.


Requirements for Successful Completion of Program

Participants must sign in/out each day and be in attendance for the entirety of the course

Instructional Methods

Case Studies and Power Point presentations will be used in this course


Monday, February 12, 2018

8:00 – 8:30 a.m. :: Registration and Continental Breakfast

8:30 a.m. – 4:30 p.m. :: Course Timing

12:00 – 1:00 p.m. :: Group Luncheon

Arc Hazard Defined

  • Terms
  • Utility work accident history
  • Typical arc flash exposures in the workplace


  • OSHA
  • NFPA
  • NESC
  • IEEE

Arc Flash Assessment Methods

  • Table (NESC)
  • Lee-Theoretical, Empirical
  • ArcProTM
  • Data gathering
    • Distribution
    • Transmission
    • Station
    • Generation

Single Phase/Three Phase

  • LV-generation/control
  • MV-HV

Tuesday, February 13, 2018

8:00 – 8:30 a.m. :: Continental Breakfast

8:30 a.m. – 12:00 p.m. :: Course Timing

Case Study – Examples

  • IEEE 1584
  • ArcPro

Arc Flash Clothing/PPE

  • Layering
  • FR vs AR
  • Faceshields

OSHA Required Information Transfer (Contractors)


Mike Bahr, Tri-State G&T, Transmission Safety Coordinator/Owner, Castle Rock Safety Consultants

Mike Bahr is employed by Tri-Sate G&T as Transmission Safety Coordinator and has been a safety professional in the electrical industry for over 30 years.  After being injured in an electrical accident in 1985, Mike has dedicated his career to the safety profession and has specialized in the area of Arc Flash Safety.  Mike has developed and presented arc flash training worldwide and is a former principal member of the NFPA 70E committee (Electrical Safety Related Work Practices).  Mike also served as the principal investigator for the development of the Department of Energy (DOE) Electrical Safety Program. 


EUCI Office Building Conference Center
4601 DTC Blvd, B-100
Denver CO, 80237

Suggested Hotel

Hyatt Place Denver Tech Center
8300 E. Crescent Parkway
Greenwood Village, CO 80111
0.9 miles away
Nightly Rate for EUCI Attendees: $149.00

Click on the following booking link: Hyatt Place Denver Tech Center – EUCI and use Group Code: EUCI or

Call Central Reservations at 888-492-8847 and ask for the EUCI rate of $149 under the corporate/group code EUCI

Other Nearby Hotels

Hyatt Regency Denver Tech Center
7800 E Tufts Ave
Denver, CO 80237
Phone: 303-779-1234
0.3 miles away

Hilton Garden Inn Denver Tech Center
7675 E Union Ave
Denver, CO 80237
Phone: 303-770-4200
0.6 miles away

Denver Marriott Tech Center
4900 S Syracuse St
Denver, CO 80237
Phone: 303-779-1100
0.7 miles away


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