The invention discloses a method and a
system for demonstrating a nuclear accident status change in a
nuclear power plant. The method comprises steps: data needed for accident monitoring are acquired; the data are converted to data with time
serialization characteristics and are stored to an emergency
database; an accident sequence change diagram is stored to the emergency
database; data in the emergency
database are extracted, the data are analyzed and judged according to the existing rule, and the status of each accident node in the current accident sequence change diagram is obtained; and the current accident sequence change diagram is displayed, and the calculated status of each accident node is displayed on the accident sequence change diagram. The
system comprises a
data acquisition module, an emergency
data recording module, an emergency database, a core
processing module, a display module and the like. Based on real-
time data, an accident sequence in a nuclear emergency status can be logically organized, the change can be demonstrated dynamically, and a visual
technical support is further provided for an emergency post person and a decision-making person.