Assurance through validation

Verify that safety functions perform as designed, reducing risk and ensuring compliance

Safety Instrumented Function (SIF) verification is a detailed engineering analysis used to confirm that a safety function meets its assigned Safety Integrity Level (SIL) target. It evaluates design performance, failure rates, and reliability to ensure the system achieves the required level of risk reduction and complies with functional safety standards.

Data Collection

Reliability data is gathered for every component within the SIF which includes failure rates

Architectural Constraint Check

The design is checked against the Hardware Fault Tolerance requirements mandated by safety standards

Comparison with Target

The calculated PFDavg and the achieved HFT are compared against the requirements of the SIL target

Ensuring Your Safety Systems Deliver

Following Detailed Design

Performed after the SIL target has been set and the SIF has been designed

During Management of Change

The entire function must be re-verified if any component has been changed

Periodic Functional Safety

There are essential documents that are reviewed during periodic audits to confirm validity