Fear of Lightning Frequency Increase
Lightning frequency increase…very few consider that they or their assets will be struck by lightning. People relegate the threat of lightning to chance and are confident it will not affect them. This is a mentality that may come back to haunt them if new scientific research is correct. Lightning! Incredible to view, frustrating to be […]
Lightning design for buried cables – really?
Continuing the theme for lightning design. I was having a technical discussion with a delegate, during a seminar in Germany. The question popped up regarding Lightning design on an AD plant (AD = anaerobic digestion). This site, with long-buried cable-runs, between plant areas. The delegates question, “What about the buried cables?” What do we do about […]
Why Rolling Sphere Method is best
What is the Rolling Sphere Method A common question on Lightning Protection Design that crops up repeatedly is – “What is the Rolling Sphere Method of protection?” Suppose you’re looking for a convenient definition in BS EN 62305. I can save you the hassle because there isn’t one! The closest you will get to a […]
Floating Roof Tank Earthing Strategies – Bypass conductors for lightning
Floating Roof Tank Fires are Common There are some 15 to 20 known Floating Roof Tank (FRT) fires per year. Floating Roof Tanks are especially vulnerable to the direct and indirect effects of lightning. Direct, or a nearby lightning strike can cause electrical current to flow across the tank shell and roof. When these lightning […]
Is prevention better than cure? | Lightning Strike Prevention
The most exciting concept to come out of the Lightning Protection sector for centuries is the idea of ‘Lightning Strike Prevention’. Now, preventing lightning itself is outside the scope of any working installation today. And maybe something for the scientific communities to think over. However, preventing an STRIKE-attachment to a structure IS something that is here and now!
Isolated LPS Design – Isolated vs Non-isolated IEC 62305
Isolated LPS An example of a relatively recent innovation in protection concept introduced to the IEC standard IEC 62305. Is the Isolated LPS (Lightning Protection System). The Isolated LPS can be described as protection measures (e.g. lightning conductors) that achieve sufficient ‘separation’ distance, electrically and/or physically, between that which is conducting the Lightning Current. That which […]