Lightning – over 25 years
Before looking at what has changed in earthing and lightning protection we need to start with a sobering thought - what has not changed substantially? The harsh reality is that every year an unacceptable number of people lose their lives due to lightning. As engineers and scientists we need to commit ourselves to actively engaging with this complex challenge and strive to reduce the annual number of lightning incidents. We have the knowledge, tools and technology at our disposal to make a difference.
Risk management is a key component of earthing and lightning protection.
Limiting the risk of damage to equipment must be considered along with limiting the risk of injury or fatality to living beings.
The recent four-part SABS IEC 62305 ‘Protection against lightning’ standard is an invaluable reference.
Published as: Earthing and lightning protection - 25 years
By K J Nixon, University of the Witwatersrand
Electricity+Control, November 2011 (pgs 62 – 64)