Although SiRAC itself has been discontinued and replaced by more powerful commercial and spreadsheet-based tools, its legacy lives on in the modern approach to risk assessment. It demonstrated that risk management does not have to be an obstacle to design; with the right tools, it can become an integral part of the creative and practical process of building and protecting our infrastructure. While SiRAC is no longer supported, the principles of standardized, repeatable, and efficient risk calculation it championed remain central to the latest editions of the IEC 62305 standard.
To generate a precise risk profile, SIRAC requires the user to input data across four primary categories: 1. Structural Dimensions
"I can't change the laws of physics, sir," Elias said calmly. He pointed to the breakdown SIRAC provided. "Look. The surge protection measures—SPM—are insufficient. The tool is telling us that without a Lightning Equipotential Bonding (LEB) system and better surge protectors on the main feed, the probability of a flashover in that basement is too high." simplified iec risk assessment calculator sirac
A: Yes. In fact, in-house machine builders must use it more rigorously than OEMs because they lack type-examination certificates.
By mastering the Simplified IEC Risk Assessment Calculator, you move from reactive safety to proactive, compliant, and truly safe machine design. Don’t wait for an incident to validate your risk assessment—use SIRAC to prevent it. Although SiRAC itself has been discontinued and replaced
With the interlock, "Probability of hazard" (Pr) reduced from Pr2 to Pr1 because the machine stops before the guard opens. New requirement: PL b. Over-design is okay.
SIRAC is a user-friendly tool designed to facilitate the risk assessment process outlined in IEC 62305. It allows users to input specific details about their electrical installation and provides a calculated risk assessment based on the IEC 62305 standard. The calculator takes into account various factors, including the type of installation, location, and equipment, to provide a comprehensive risk assessment. To generate a precise risk profile, SIRAC requires
If you want, I can generate a ready-to-use scoring table, a spreadsheet template, or an example calculation for a specific hazard.
When SIRAC indicates that a structure's risk exceeds tolerable levels, the software assists engineers in selecting appropriate risk-reduction measures. Users can simulate different protection scenarios within the tool to see how they lower the final risk score. These measures typically include:
Classification of areas where combustible dust hazards are present.
) : The average number of lightning strikes per square kilometer per year in that specific geographic region. Relative Location Factor ( Cdcap C sub d