) : The average annual lightning strike density per square kilometer based on local meteorological mapping. 2. Conductive Service Lines
Instead of forcing engineers to calculate collection areas, probability factors, and loss values by hand, SIRAC uses a guided interface to process baseline data. It evaluates the specific risks associated with a structure and outputs a clear verdict on whether a Lightning Protection System (LPS) or Surge Protection Devices (SPDs) are legally or practically required. The Core Methodology: IEC 62305-2 Risks Evaluated simplified iec risk assessment calculator sirac
| Parameter | Meaning | Typical Levels | |-----------|---------|----------------| | (Severity of injury) | Minor to irreversible (fatality) | S1 (minor), S2 (serious) | | F (Frequency/duration of exposure) | How often a person enters danger zone | F1 (rare/short), F2 (frequent/long) | | P (Possibility of avoiding hazard) | Can operator react to stop or escape? | P1 (possible), P2 (hardly possible) | | Pr (Probability of hazardous event) | Likelihood hazard leads to injury | Low/Medium/High (or 5-step scale) | ) : The average annual lightning strike density