SN EN 62305-2 : 2006

INTRODUCTION
1 Scope
2 Normative references
3 Terms, definitions, symbols and abbreviations
4 Explanation of terms
  4.1 Damage and loss
  4.2 Risk and risk components
  4.3 Composition of risk components related to a
      structure
  4.4 Composition of risk components related to
      a service
  4.5 Factors influencing the risk components
5 Risk management
  5.1 Basic procedure
  5.2 Structure to be considered for risk assessment
  5.3 Service to be considered for risk assessment
  5.4 Tolerable risk R[T]
  5.5 Specific procedure to evaluate the need of
      protection
  5.6 Procedure to evaluate the cost effectiveness
      of protection
  5.7 Protection measures
  5.8 Selection of protection measures
6 Assessment of risk components for a structure
  6.1 Basic equation
  6.2 Assessment of risk components due to flashes to
      the structure (S1)
  6.3 Assessment of the risk component due to flashes
      near the structure (S2)
  6.4 Assessment of risk components due to flashes to
      a line connected to the structure (S3)
  6.5 Assessment of risk component due to flashes near
      a line connected to the structure (S4)
  6.6 Summary of risk components in a structure
  6.7 Partitioning of a structure in zones Z[S]
  6.8 Assessment of risk components in a structure
      with zones Z[S]
7 Assessment of risk components for a service
  7.1 Basic equation
  7.2 Assessment of components due to flashes to
      the service (S3)
  7.3 Assessment of risk component due to flashes near
      the service (S4)
  7.4 Assessment of risk components due to flashes to
      structures to which the service is connected (S1)
  7.5 Summary of risk components for a service
  7.6 Partitioning of a service into sections S[S]
Annex A (informative) Assessment of annual number N of
                       dangerous events
Annex B (informative) Assessment of probability P[X] of
                       damage for a structure
Annex C (informative) Assessment of amount of loss L[X] in a
                       structure
Annex D (informative) Assessment of probability P'[X]
                       of damage to a service
Annex E (informative) Assessment of the amount of loss L'[X]
                       in a service
Annex F (informative) Switching overvoltages
Annex G (informative) Evaluation of costs of loss
Annex H (informative) Case study for structures
Annex I (informative) Case study for services - Telecommunication
                       Line
Annex J (informative) Simplified software for risk assessment
                       for structures
Annex NB (informative) Assessment of probability P[X] of damage
                       for a structure
Annex NC (informative) Assessment of amount of loss L[X] in
                       a structure
Annex NH (informative) Case study for structures
Annex NK (informative) Values determined at national level
                       where permitted
Bibliography

Applies to risk assessment for a structure or for a service due to lightning flashes to earth.