Research Article
Probabilistic Dynamics for Integrated Analysis of Accident Sequences considering Uncertain Events
Table 2
Time related variables and parameters.
| | Symbol | Description | Unit |
| | Time scale variable (equal to 0, when LoCA) | s | | Time moment, when core dewatering starts; time moment, when core uncover starts; that is, core degradation process starts ( = 4080) | s | | Time delay between LoCA and core dewatering ( = = 4080) | s | | Time moment, when clad oxidation starts ( = + = 4125) | s | | Time delay between core dewatering and clad oxidation, that is, start of hydrogen production ( = 45) | s | | Time moment, when total core uncover occurs ( = 5875 if > ) | s | | Time moment, when water injection starts ( = ) | s | | Time moment, when water spray starts ( = ∞ if > ; = ) | s | | Time moment, when vessel rupture starts ( = ∞ if ≤; = ∞ if < ; = + ; = 14220 if = ∞ and = ∞) | s | | Time delay (core dewatering phase) between core dewatering and start of vessel rupture, that is, vessel damage | s | | Time moment, when containment fails ( = ∞ if ≤ ; = ∞ if <) | s |
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Note. : uniform distribution in interval (, ).
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