LOPA Risk Assessment Calculator
Quantifies risk reduction from independent protection layers (IPLs) and determines SIL requirements per IEC 61511. Evaluates initiating events, enabling conditions, and safeguard effectiveness per CCPS methodology.
Scenario Definition
e.g., V-101
Initiating Event & Enabling Conditions
0-1
0-1
0-1
0-1
Independent Protection Layers (IPLs)
0.0001-1
LOPA Results
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About This Calculator
Layer of Protection Analysis (LOPA) is a semi-quantitative risk assessment method per CCPS and IEC 61511.