Lightning Risk Calculation

Protection against lightning and overvoltage requires one of the most important steps: performing a lightning risk assessment. Just as every building is different, each geography is unique. In Turkey, for example, Antalya, Mersin, and Muğla have a high risk of lightning strikes, and the strikes are particularly strong. Another important factor in lightning risk assessment is that all calculations and engineering must comply with IEC 62305-2 standards. Based on this risk assessment, decisions should be made on how to protect against lightning and which products to select.

Map of stormy days in Turkey

Risk Assessment of Buildings

Lightning strikes affecting the building, as a source of damage:

• S1: Directly to the building
• S2: Near the building
• S3: To service installations
• S4: Near service installations

Separation of Lightning Effects:

• D1: Harm to living beings due to touch and step voltages
• D2: Physical damage
• D3: Malfunction of internal systems due to electromagnetic effects

You can contact our center for lightning risk assessment.

Classification of Losses

Possible losses due to lightning strikes:

• L1: Loss of life
• L2: Loss of public services
• L3: Loss of cultural heritage
• L4: Loss of economic assets

• R1: Risk of loss of life
• R2: Risk of loss of public services
• R3: Risk of loss of cultural heritage
• R4: Risk of loss of economic assets

Every year, millions of lira are lost due to lightning strikes.

These values need to be calculated. Each risk component can be expressed using the general equation:

Rx = Nx . Px . Lx

Nx: Annual number of hazardous events

Px: Probability of building damage

Lx: Loss

By calculating this component, it can be determined whether protection against lightning is required based on an acceptable level.

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