Speaker
Description
The conceptual design of the High-Temperature Gas-Cooled Reactor (HTGR) research reactor was developed by the team at the Division of Nuclear Energy and Environmental Analysis of the National Centre for Nuclear Research (NCBJ). Emergency Preparedness and Response (EPR) analysis is essential, leading to the designation of an Emergency Planning Zone (EPZ), which is crucial for advancing the project. Due to characteristics like the effective heat removal by HTGR cores and the significant reduction of dust-containing sorbed fission products by TRISO particles, the EPZ size is reduced. These zones are established based on safety analysis results, considering potential emergency scenarios with the worst possible consequences and probability of occurrence equal to or greater than once in 10^7 years calculated using severe accident code (MELCOR). Radiological analysis, utilizing JRODOS, was conducted for various accident scenarios (e.g., D-LOFC), incorporating a range of weather scenarios. The analysis demonstrated that the limited radionuclide inventory available for release and specific security-enhancing rector design inherently mitigates the dose consequences. Statistical analyses were performed for the surrounding NCBJ institute area, highlighting the distribution and risk factors for populated areas. The observed decrease in consequences indicates that smaller EPZs could be viable without raising risks to public safety.
| Country OR International Organization | National Centre for Nuclear Research |
|---|---|
| Email address | piotr.kopka@ncbj.gov.pl |
| Confirm that the work is original and has not been published anywhere else | YES |
