Qualifying a system according to DNV-RP-F118 typically involves several rigorous stages:
Converting trial data into PoD curves and sizing error metrics. 3. Key Statistical Requirements dnv-rp-f118
Simulation is used to ensure adequate zone spacing and "over-trace," ensuring that no part of the weld remains uninspected. Summary Table: Key Metrics in DNV-RP-F118 Requirement/Recommendation Minimum Statistical Samples 29 (General) Establish confidence in flaw detection. Recommended Samples (Submerged Arc) Handle complex weld geometry. Typical PoD Target 90% Detection / 95% Confidence Ensure safety-critical flaws are not missed. Inspection Methodology Zonal Discrimination Divide weld into focused inspection zones. dnv-rp-f118