Free Access
Table 3
Description of environmental source terms for Finnish NPP's.
Source term name | LO-NCR-APC04 | OL-RHR-12 |
Reactor type | PWR (VVER440 with ice condenser) | BWR |
Initiating event | TRANSIENT (loss of feed-water, offsite power and service water) | Loss of heat removal during planned shut-down |
Description of scenario | Failure of primary circuit depressurization; Core damaged; Corium in-vessel retention – SAM; CONT damaged due to overpressure; |
Core damaged; Failure of RPV 8 h after accident initiation – MCCI; Failure of filtered venting; CONT damaged due to overpressure; |
Begin of release (after end of chain reaction) | 10 h (after 34 h through CONT break; height: near ground level) | 6 h (after 13 h through CONT break; height: near ground level) |
Duration of release | 62 h (38 h through damaged CONT) | 32 h (27 h through damaged CONT) |
Total release | ||
131I | 60 PBq | 10 PBq |
137Cs | 0.2 PBq | 1 PBq |
133Xe | 2 000 PBq | 1 000 PBq |
Radiological equivalent of 131I activitya | 61 PBq | 55 PBq |
INES category | 7 | 7 |
a
Radiological equivalent of the 131I has been calculated according to INES (2009) methodology.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.