The principle consists of
creating one or more preferred
impact points for a lightning
strike using low
impédance,
conductor elements. These then conduct and dissipate the
lightning current into the ground. This coherent system enables
the lightning to be captured and dissipated whilst providing
protection to the structure.
There are five types of lightning conductor for protecting
structures against lightning:
- Lightning rod,
- Mesh cage,
- Catenary wires,
- Early streamer emission,
- Protection by «natural» components,
Note: The decree of 11 October 1983, applicable from 1st January 1986, forbids the use of radioactive elements in the manufacture, marketing and importing of lightning conductors.
Existing lightning conductors may be left in place; they are now however to be generally considered as lightning rods (not ESE’s), particularly with respect to the decree of 28/01/1993, circular no.2 of 28/01/1996 concerning lightning protection of installations classified for environmental protection purposes (ICPE).
Installation standards:
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