API 521 requires that the engineer considers the probability of concurrent events. For example, should a fire scenario be combined with a blocked outlet? The general consensus, per API 521, is that unrelated failures need not be superimposed unless a logical causal link exists (e.g., a fire causing a power failure).
System-wide relief scenarios and depressurization for pressure vessels. api 521 free pdf
If you work in the industry, check your company’s library or engineering portal. University Libraries: Students can often access these through services like IEEE Xplore ASTM Compass if their institution has a specific license. 3. API Read-Only Government Liaison Portal API provides a API 521 requires that the engineer considers the