British Standards

BS EN 62305-2 Protection against lightning. Risk management

BS EN 62305-2 Protection against lightning. Risk management
BS EN 62305-2 outlines risk assessment for a structure or service from lightning flashes to earth.

Its purpose is to provide a procedure for the evaluation of such a risk. Once an upper tolerable limit for the risk has been selected, this procedure allows the selection of appropriate protection measures to be adopted to reduce the risk to or below the tolerable limit.

Publication Date: September 29 2006
Replaces: BS 6651:1999
Amended by: Corrigendum April 2009

Contents of BS EN 62305-2:

    Introduction
    Scope
    Normative references
    Terms, definitions, symbols and abbreviations
    Explanation of terms
    Damage and loss
    Risk and risk components
    Composition of risk components related to a structure
    Composition of risk components related to a service
    Factors influencing the risk components
    Risk management
    Basic procedure
    Structure to be considered for risk assessment
    Service to be considered for risk assessment
    Tolerable risk RT
    Specific procedure to evaluate the need of protection
    Procedure to evaluate the cost effectiveness of protection
    Protection measures
    Selection of protection measures
    Assessment of risk components for a structure
    Basic equation
    Assessment of risk components due to flashes to the structure (S1)
    Assessment of the risk component due to flashes near the structure (S2)
    Assessment of risk components due to flashes to a line connected to the structure (S3)
    Assessment of risk component due to flashes near a line connected to the structure (S4)
    Summary of risk components in a structure
    Partitioning of a structure in zones ZS
    Assessment of risk components in a structure with zones ZS
    Assessment of risk components for a service
    Basic equation
    Assessment of components due to flashes to the service (S3)
    Assessment of risk component due to flashes near the service (S4
    Assessment of risk components due to flashes to structures to which the service is connected (S1)
    Summary of risk components for a service
    Partitioning of a service into sections SS

BSI Online Link