The PDF guidelines provide the mathematics , but digital tools provide the velocity .
The CCPS guidelines codify two primary logical tools: The PDF guidelines provide the mathematics , but
The final guideline is critical: If you install a new control valve or change a catalyst, the failure frequencies of your equipment change. The QRA must be updated via your MOC system. A standard QRA workflow involves several technical stages,
A standard QRA workflow involves several technical stages, each requiring rigorous data and modeling. 1. Hazard Identification and Scenario Selection This typically involves using qualitative tools like Hazard
Before quantifying risk, you must identify what could go wrong. This typically involves using qualitative tools like Hazard and Operability Studies (HAZOP) or Failure Mode and Effects Analysis (FMEA) to pinpoint "Top Events," such as a toxic gas release or a boiling liquid expanding vapor explosion (BLEVE). 2. Consequence Analysis
By combining these two factors, engineers can calculate (the risk to a single person) and Societal Risk (the risk to a group of people).