03/305096 DC : DRAFT MAR 2003

INTRODUCTION
1. SCOPE AND OBJECT
2. NORMATIVE REFERENCES
3. TERMS AND DEFINITIONS
4. RISK ASSESSMENT METHOD
   4.1 General approach
       4.1.1 Source of damage
       4.1.2 Types of damage
       4.1.3 Types of loss
   4.2 Risk components
       4.2.1 Risk components for a structure
       4.2.2 Factors influencing the risk components in a
             structure
       4.2.3 Risk components for a service
       4.2.4 Factors influencing the risk components in a
             service
   4.3 Risk management
       4.3.1 Structure to be considered for risk assessment
       4.3.2 Service to be considered for risk assessment
       4.3.3 Tolerable risk R[T]
       4.3.4 Procedure to evaluate the need of protection
       4.3.5 Procedure to evaluate the economic convenience of
             protection
       4.3.6 Protection measures
       4.3.7 Selection of protection measures
5. ASSESSMENT OF RISK COMPONENTS FOR STRUCTURES
   5.1 Partitioning of a structure in zones Z[s]
   5.2 Parameters to assess risk components
   5.3 Risk due to flashes to the structure
       5.3.1 Assessment of risk components due to lightning
             flashes to the structure
   5.4 Risk due to flashes not to the structure
       5.4.1 Assessment of the risk component due to lightning
             flashes near the structure
       5.4.2 Assessment of risk components due to lightning
             flashes to an incoming line
       5.4.3 Assessment of risk component due to lightning
             flashes near an incoming line
   5.5 Summary of risk components in a structure
6. ASSESSMENT OF RISK COMPONENTS FOR SERVICES
   6.1 Partitioning of a service in sections SS
   6.2 Parameters relevant to the assessment of risk
       components
   6.3 Assessment of risk components related to lightning
       flashes to the service
   6.4 Assessment of the risk component due to lightning
       flashes near the service
   6.5 Assessment of risk components due to lightning flashes
       to the structures to which the service is connected
   6.6 Summary of risk components in a service
ANNEX A (Informative) - Assessment of annual number of
                        dangerous events
ANNEX B (Informative) - Assessment of probability of damage
                        for a structure
ANNEX C (Informative) - Assessment of amount of loss for a
                        structure
ANNEX D (Informative) - Assessment of probability of damage for
                        a service
ANNEX E (Informative) - Assessment of amount of loss for 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