Standard for the Installation of Lightning Protection
The lightning protection system for a parallel (voltage- powered) airƒeld lighting circuit should be installed in the same manner as a lightning protection system for a series (current-driven)
The prime purpose of this Standard is to describe and encourage use of quality lightning protection systems for fire safety. This document covers the protection from lightning of buildings and structures, elevated storage silos, heavy duty stacks, trees, and open shelters.
NFPA 780 includes lightning protection for typical building construction in Chapter 4 as general requirements for structures. The 780 document covers many specialty constructions from hazardous materials storage to boats and ships to open picnic structures, and gives recommendations for personal safety outdoors.
The earthing network of an RBS should be formed by a ring loop surrounding the tower, equipment room and fence, at a minimum. The mean radius re of this ring loop should be not less than l1, as indicated in Figure 1 and this value depends on the lightning protection system (LPS) class and on the soil resistivity.
Lightning protection systems have a remarkable record of protecting against physical danger to people, structural damage to buildings, and failure of internal systems and equipment. The value received begins with proper design, continues through quality installation practices, and must include inspection and certification.
176) Lightning protection system components may be concealed in building construction. A lightning protection system is a low resistance continuous metallic path designed for the purpose of transferring lightning from the top of a structure into the earth.
An inspection and maintenance procedure is recommended, and may be conducted by the system installer, an authority. Keeping the lightning protection system up to date with current standards ensures the greatest level of safety. When a lightning protection system is upgraded, as-built drawings should be revised to document modifications.
The lightning protection system for a parallel (voltage- powered) airƒeld lighting circuit should be installed in the same manner as a lightning protection system for a series (current-driven)
The IEC 62305 prepares Standards for Lightning Protection Design. Read the Axis Electricals'' blog to learn more.
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