Designed to reduce the complexity of the IEC 31010:2019 standard (which provides techniques for risk assessment).
This article explores what SIRAC is, how it functions, its role in risk management, and how professionals use it to comply with international safety standards. What is SIRAC (Simplified IEC Risk Assessment Calculator)?
The (Simplified IEC Risk Assessment Calculator) was an early digital tool developed to help engineers determine if a building required a lightning protection system based on the IEC 62305-2 standard . simplified iec risk assessment calculator sirac
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.
SIRAC was built on the calculations and methods specified in and was often distributed alongside the standard, for instance on accompanying CD-ROMs or via IEC FTP servers for updates. The tool was officially described as a companion to the standard, not a replacement for professional judgment, but a vital assistive technology to ensure the standard's widespread adoption. Designed to reduce the complexity of the IEC
SIRAC automatically calculates internal probabilities (e.g., probability of physical damage, probability of failure of internal systems) and matches them with predetermined loss factors.
Combustible (wood) vs. non-combustible (concrete, metal). The (Simplified IEC Risk Assessment Calculator) was an
Simplified IEC Risk Assessment Calculator (SIRAC): A Complete Guide to Compliance and Implementation
Allows designers to quickly change inputs (e.g., increasing safety measures to reduce P) and immediately see the impact on the required SIL.