Table 4-5 lists a number of realistic and worst case releases. The realistic releases represent the
incident outcomes with a high probability of occurring. Thus, rather than assuming that an entire storage vessel fails catastrophically,
it is more realistic to assume that a high probability ex-
ists that the release will occur from the disconnection of the largest pipe connected to the tank.
The worst case releases are those that assume almost catastrophic failure of the process,
resulting in near instantaneous release of the entire process inventory or release over a short
period of time.