An arc flash is the consequence of an electric arc – which can occur where there is sufficient voltage in an electrical system and a path to ground or to a lower voltage. It is generally the result of a short circuit of energized conductors.
An arc flash can cause extensive damage, fire or injury. The energy released in the fault rapidly vaporizes the metal conductors involved, blasting molten metal and expanding plasma outward with great force. The result of the violent incident can cause destruction of equipment involved, fire, and injury – not only to the worker but also to those people around the worker.
In addition to the explosive blast of such a fault, destruction arises from the intense radiant heat produced by the arc. The metal plasma arc produces tremendous amounts of light energy from far infrared to ultraviolet. Surfaces of nearby people and objects absorb the energy and are instantly heated to vaporizing temperatures. The thermal incident energy onto the worker can cause severe skin burns or have lethal consequences.
Potential causes of an arc flash or arc blast may include:
- Poorly maintained equipment
- Workers interacting with energized equipment
- Removal/Installation of circuit breakers or fused switches
- Removal of bolted/hinged covers on enclosed equipment
- Workers inadvertently drop tools or equipment components in energized parts
- Insulation failure due to an accumulation of contaminates, dust, or water
- Loose connections
- Unsuccessful short circuit interruptions
ARC FLASH Compliance Program
NFPA 70E mandates an arc flash hazard analysis shall be updated when a major modification or renovation takes place. It shall be reviewed periodically, not to exceed 5 year increments, to account for changes in the electrical distribution system that could affect the results of an arc flash hazard analysis.
Facility Results provides a comprehensive Arc Flash Hazard program study incorporating industry standard practices that comply with NFPA 70E standards. We offer custom “turn-key” analysis that will model your power distribution system. We will provide your facility with a comprehensive electrical safety analysis and complete written program. The written program may include the following based upon your needs.
ANSI Compliant Labeling
- ANSI Compliant labeling
- One-Line Diagram
- Short Circuit Analysis
- Hazard Mitigation
- Device Coordination
- Hazard Category Outcomes
- Site Specific Training
- Personal Protective Equipment & Tooling Recommendations
- Ongoing Compliance Audits
- State-of-the-Art Change Management Program
- Ongoing Managed Glove Program