3. Leakage frequency weighting principle

3.1 Why weight leakage frequencies?

Within the framework of quantified risk analyses (QRA or other), it is necessary to be able to estimate the probability of occurrence of hazardous phenomena that may occur following events such as loss of capacity containment (pipe breach, pressure vessel rupture, etc.). A number of databases currently exist (HCRD, UKOPA, EGIG, etc.), the content of which is analyzed in detail in [SE 4 055] . These databases report leak frequencies based on statistical...