Simplified Iec Risk Assessment Calculator Sirac -
To start a SIRAC assessment, a user enters a limited set of parameters describing the structure, its surroundings, and its contents. The tool simplifies the process by dividing these key parameters into three main categories:
If a structure fails the initial risk assessment, users can toggle safety variables (e.g., adding surge protective devices or changing the LPS class) to see how it drops the overall risk below the tolerable threshold.
| Benefit | Explanation | |---------|-------------| | | Removes the need for complex arithmetic (e.g., fault tree analysis) in early assessment. | | Standardized | Directly traceable to IEC 62061, easing certification (e.g., CE, UKCA, UL). | | Repeatable | Different assessors get similar results if inputs are clear. | | Documentation | Produces auditable evidence for machine file under Machinery Directive 2006/42/EC. | | Free/low-cost | Many open Excel versions exist; no expensive software required. | simplified iec risk assessment calculator sirac
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Assesses internal wiring configurations, underground or overhead power lines, and telecommunication feeds entering the structure. To start a SIRAC assessment, a user enters
Enables small-to-medium enterprises (SMEs) to complete a defensible risk assessment without deep expertise in mathematical risk modeling, while remaining compliant with international harmonized standards.
By condensing multi-layered algebraic equations into a user-friendly interface, SIRAC allows engineers, architects, and safety officers to input basic structural data and quickly determine whether a building requires a Lightning Protection System (LPS). The Core Methodology: IEC 62305-2 Compliance | | Standardized | Directly traceable to IEC
The first edition of IEC 62305-2 was a monumental step forward in standardizing risk management for lightning strikes. However, it was also highly technical. To make the standard more accessible to a broader audience of engineers, architects, and safety inspectors, the standard's creators included SIRAC as a simplified implementation of the written methodology.
SIRAC reduces the input variables. It asks for fewer parameters than a full IEC assessment. But in doing so, it forces the engineer to make weighted assumptions . If you assume the wrong "frequency of exposure" or miscalculate the "possibility of avoiding the hazard," the simplified math doesn’t just give a wrong answer—it gives a dangerously confident wrong answer.
How often does a person enter the danger zone?