Lightning Risk Calculator

One of the most important stages of lightning protection is the calculation of lightning risk. Especially when selecting an external lightning protection system, the lightning risk calculation must be calculated according to IEC 62305 standards to obtain the most optimized result. You can access the details of how to perform a lightning risk calculation for a structure in the IEC 62305-2 section.

When performing lightning risk calculation, the following factors are taken as a basis.

• Danger structure for people
• Number of thunderstorm days
• Structure occupancy coefficient
• Relative location of the facility
• Fire Risk
• Importance of the service provided by the building
• Electrical Lines
• Lightning Protection Level (LPL)
• Installation dimensions

Lightning Density Ng

Lightning density is the number of lightning strikes falling on an area of one kilometer in a year. The lightning protection level is higher for places with high lightning strikes. As lightning density decreases, the risk also decreases.

Danger Status for People

• No Danger 1
• Low Level Panic (<= 2 floors, <100 people) 2
• Panic Medium risk (<1000 people) 5
• Difficult to evacuate (disabled, hospitals) 5
• Panic high risk (> 1000 people) 10
• Hazard to surroundings or environment 20
• Surroundings and environmental pollution 50

When calculating lightning risk, the danger status of the structure is taken into account.

Structure Occupancy Rate

• If the structure is empty 0.1
• Normally Occupied 0.01

Status of the Building Relative to the Environment

• Structure surrounded by trees and high objects 0.25
• Structure surrounded by similar or lower objects 0.5
• Isolated structure, no objects nearby 1
• Isolated structure on a hill 2

A roof damaged by lightning

Fire Risk

• Explosion 1
• High 0.1
• Medium 0.01
• Low 0.001

YILKOMER LIGHTNING RISK ANALYSIS PROGRAM TURKISH

YILKOMER LIGHTNING RISK ANALYSIS PROGRAM ENGLISH