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lected and centrally evaluated for a comprehensive overall The costs of LEMP protection measures for existing structures
protection system. are usually higher than those for new structures. If, however,
the LPZs are chosen appropriately and existing installations
Figures 7.1.2a and b show examples of how to implement are used or upgraded, costs can be reduced.
the measures described for the lightning protection zone con- If a risk analysis in accordance with IEC 62305-2 (EN 62305-2)
cept. shows that LEMP protection measures are required, this can
only be achieved if:
¨ The measures are planned by a lightning protection special-
7.2 SPM management ist having sound knowledge of EMC,
For new structures, optimum protection of electronic systems ¨ There is close coordination between the building and LEMP
with a minimum of expenses can only be achieved if the elec- experts (e.g. civil and electrical engineers) and
tronic systems are designed together with the building and be- ¨ The management plan according to Table 7.2.1 (subclause
fore its construction. In this way, building components such as 9.2 of IEC 62305-4 (EN 62305-4)) is observed.
the reinforcement, metal girders and metal buttresses can be A final risk analysis must prove that the residual risk is less
integrated in the LEMP protection management. than the tolerable risk.

Action to be taken by
Step Aim
(if relevant)
Assessing the necessity of an LEMP protection measures sys- b)
Initial risk analysis a) tem. If necessary, an appropriate LEMP Protection Measures • Lightning protection specialist
System (LPMS) must be chosen based on a risk assessment. • Owner
The cost / benefit ratio of the protection measures chosen
should be optimised again by a risk assessment. The follow- • Lightning protection specialist b)
Final risk analysis a) ing must be determined: • Owner
• Lightning protection level (LPL) and lightning parameters
• LPZs and their boundaries
Definition of the LPMS:
• Spatial shielding measures • Lightning protection specialist b)
Design of the LEMP • Equipotential bonding networks • Owner
Protection Measures • Earth-termination systems • Architect
System (LPMS) • Conductor routing and shielding • Designer of internal systems
• Shielding of incoming supply lines • Designer of relevant installations
• SPD system
• General drawings and descriptions
Design of the LPMS • Preparation of tender lists • Engineering office or equivalent
• Detailed drawings and schedules for installation
• Lightning protection specialist b)
Installation • Quality of the installation • Installer of the LPMS
and inspection • Documentation • Engineering office
of the LPMS • Possible revision of the detailed drawings
• Supervisor
Acceptance Inspection and documentation of the system • Independent lightning protection expert b)
of the LPMS • Supervisor
• Lightning protection specialist b)
Periodic inspections Ensuring an appropriate LPMS
• Supervisor
a) see IEC 62305-2 (EN 62305-2)
b) with a broad knowledge of EMC and knowledge of installation practices
Table 7.2.1 SPM management plan for new buildings and for comprehensive changes to the construction or use of buildings according to
IEC 62305-4 (EN 62305-4)

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