Simplified Iec Risk Assessment Calculator Sirac [upd] Jun 2026

It instantly applies the correct mathematical coefficients for structural shielding, soil resistivity, and zoning.

FACTORS in pre-existing or proposed mitigation systems, such as the specific class of Lightning Protection System (LPS Levels I through IV) and Surge Protection Devices (SPDs).

) across a defined physical footprint. Rather than managing extensive spreadsheets or manual tables, users rely on SIRAC to run the standardized, multi-variable IEC formula: R=N×P×Lcap R equals cap N cross cap P cross cap L simplified iec risk assessment calculator sirac

Pinpoints exact vulnerabilities, such as whether a building specifically requires internal surge protection (SPD) rather than external grounding mesh.

: It appeared in the first edition of IEC 62305-2 but was removed from later editions due to its limited parameter set and inability to handle multi-zone complex structures. ): Higher risks are assigned to buildings that

| Feature | | TUPÃ | | :--- | :--- | :--- | | Development | Developed by the International Electrotechnical Commission (IEC) and provided as an annex to the standard | Developed by the Institute of Electrotechnics and Energy at the University of São Paulo (IEE-USP) in Brazil | | Primary Function | Simplified risk component assessment for uncomplicated structures, based on IEC 62305-2 ed1.0 | Risk assessment with additional features for more complex scenarios, also based on IEC 62305-2 | | Handling of Adjacent Structures | Limitation: Does not account for the influence of an adjacent building when calculating the risk for the structure of interest | Advantage: Allows users to input parameters for an adjacent structure, incorporating its influence into the final risk calculation for the target building | | Handling of Multiple Services | Advantage: Can handle more than one incoming service (e.g., multiple power or telecom lines) simultaneously | Limitation: Considers only one incoming service at a time, requiring separate calculations for each |

: Users enter basic structure dimensions (length, width, height) and select environment factors from dropdown menus. 3. Characterize Conductive Service Lines

): Higher risks are assigned to buildings that are difficult to evacuate, such as hospitals or high-panic environments (stadiums) .

It is crucial to understand that is specific to IEC 62061 , which determines Safety Integrity Levels (SIL) . This differs from ISO 13849-1 , which uses a risk graph to determine Performance Levels (PL) .

: The value of the building's contents (e.g., flammable materials, electronics) and the number of people regularly inside.

). Users must choose from predefined field constraints, such as whether the structure sits in a densely populated urban area, on an isolated hilltop, or flat, open terrain. 3. Characterize Conductive Service Lines