lightning protection methods

These types of lightning terminals can be assumed as more technological and modern types than conventional types. These then conduct and dissipate the lightning current into the ground. Approximately one-third of all tank fires are known to be caused by lightning (several more, are most likely due to lightning, but never reported). Examples of existing methods include geometrical constructions, such as the “Cone of Protection” and “Rolling Sphere Method” which is based on “Electrogeometric” models ( EGMs). Such a coherent system enables the lightning strike to be arrested and transferred while providing maximum protection to the structure and human beings as well. What type of lightning protection methods can be used for human and structures? There are different methods of lightning protection systems. In action, meshed air conductors are put around the edge and sides of the roof and on the very high points. Fires involving petroleum storage tanks are far more common than one might think. This coherent system enables the lightning to be captured and dissipated whilst providing protection to the structure. A lightning protection system performs a simple task. Lightning Protection Methods - Free download as PDF File (.pdf), Text File (.txt) or read online for free. Copyrights © 2019 All Rights Reserved by ORBITAL Lightning Protection Technologies. It is obviously only can be used for protecting small structure areas or zones such as households, chimneys, water tanks, watch towers, air masts and gardens.Meshed method type lightning protection, originally oriented from the Faraday cage installations, merely consist of some meshed conductors which dominate covering the roofs and side walls of the structures whereas conventional lightning rods only spot some particular points with its rod system for protection. Early Streaming capacity of an standard ESE can be measured with it is DeltaT( value. In practice, the Rolling Sphere Method is widely used. A network of conductors follows the external perimeter of the roof. The principle consists in creating one or more preferred impact points for a lightning strike using low impedance, conductor elements.

Development of existing lightning protection standards, in the U.S. as well as internationally derive from the same scientific sources.

Maximum protection against the negative effects of lightning strikesMain essential principles of lightning protection consist iof forming one or more preferred attraction points for a direct lightning strike thanks to using low impedance and complementary conductor items. The aim is to avoid the lightning current coming directly into contact with the structure.Catenary wire conductors placed above the structure to be protected are connected to This protection requires that additional mechanical studies (resistance of materials for masts, qualifying ground pressure, resistance to wind and weather condition, etc.) This network is completed with transverse elements.

Air terminals are positioned around the edge of the roof and on high points. The mesh size can be selected between 4 and 16 meters according to the types of protection required for the building. Lower and higher values cannot be assumed and evaluated as ESE in any means. to be protected by Faraday cage installation  method firstly would be covered by linked conductors alike in meshed method technic.

Such a network of conductors are followed by an external perimeter down the to ground.

This lightning conductor is made up of a 2 to 8 m high tapered metal rod that dominates the structure to be protected and which is connected to minimum two down conductors and two earthing system.As the protection radius of this type of Air-Termination Rod is limited to around 30 meters environ (Lightning Protection Level = IV, height = 60 meters), it is normally only used to protect small structures or zones such as pylons, chimneys, tanks, water towers, aerial masts, etc...This lightning protection, derived from the Faraday cage, consists of meshed conductors that cover the roof and walls of the structure to be protected.Air terminals are positioned around the edge of the roof and on high points. In NFC 17-102/2011 ESE Standard, projected DeltaT values of ESEs are stated from 10 to 60 microseconds. It enables the system of lightning protection to attract and conduct the lightning strikes to the ground safely.The basic principle of an Early Streamer Emission (ESE) type lightning air terminal can be defined as to protect a particular area located in a specific radius value (typically 10 meters to 107 meter) by generating artificial ion waves thanks to its ion generation devices, to increase the possibility of attraction of the lightning strike through these high potential electricity atmosphere an earlier than other types of lightning protection systems. There are five types of lightning protection systems for protecting structures against lightning:Benjamin Franklin invented the Lightning Rod in 1753.