Calculation of the Source Term for a S1b-Sequence at a VVER-1000 Type Reactor,Part 1

摘要

The behavior of the source term in a VVER-1000 type reactor is calculated usingthe Source Term Code Package (STCP). The input data are based on the Russian plant Zaporozhye-5. The selected accident sequence is a small break LOCA (Loss Of Coolant Accident) in the hot leg followed by loss of offsite and onsite electric power (S1B sequence). According to the course of the calculation the results are presented and analyzed for each program. Except for the noble gases all release fractions are lower than 0.0001.