Course Information

Arc Flash Awareness

This course is aimed at those who require a basic understanding of arc flash and arc blast (often referred to as electrical flash-over) with a focus on UK compliance requirements based on US NFPA 70E standards.
Arc-flash-awareness course

Duration:

0.5 day

Scheduled Dates:

Please select a preferred date below

Assessment Method:

Assessment Paper

Price:

Available on request

Course Aims

The course assumes a minimal level of understanding of electrical principles, and is aimed at those who have duty holder responsibilities, those who are responsible for managing electrical systems and those who maintain and operate electrical equipment at both Low Voltage and High Voltage.

Course Content

  • Primary hazards of electricity
  • Arc flash hazard
  • Shock hazard
  • What is an electric arc
  • Measuring arc flash
  • Legislation / safety policy
  • Arc flash risk assessment
  • How the process works

 An introduction to Arc Flash

An arc flash is usually caused by inadvertent contact between an energised conductor such as a bus bar or wire with another conductor or an earthed surface. When this occurs, the resulting short circuit current can vaporise the conductors and produce strong magnetic fields that blow the conducting objects apart. 

The resultant fault current ionises the air and creates a conducting plasma fireball with arc temperatures that can reach upwards of 20,000 degrees centigrade at its centre (4 times the surface temperature of the sun), which will immediately vaporize all known materials close to the arc immediately and the incident energy emitted may ignite the worker’s clothing and/or cause body burns to the worker even without igniting the clothing. Severe injury and even death can occur, not only to persons working on the electrical equipment, but also to people located nearby.

Arc flash injury can include external burns (i.e. severe burns to the skin), internal burns and intoxication from inhaling hot gasses and vaporised metal, hearing damage, eye damage and blindness from the ultraviolet light of the flash as well as many other devastating injuries. Depending on the severity of the arc flash, an explosive force known as an arc blast may also occur. This is due to the rapid expansion of air and vaporised materials, dispelling a force that may exceed 100 kiloPascal (kPa) and could cause the propulsion of molten metal, equipment parts and other debris at speeds of up to 300 metres per second (m/s).

This training is intended to complement customers site circumstances and an opportunity exists to modify the presentation to meet specific needs.

Upon completion of the course, successful delegates will receive a certificate.

This is an on-demand course, which can also be delivered on site. Please call our sales team for more details.

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