Benchmark Study of the Accident at the Fukushima Daiichi Nuclear Power Plant

Acknowledgements Table of contents List of figures List of tables List of abbreviations and acronyms Executive summary Chapter 1. Introduction Chapter 2. Results of the unit 1 analyses Overview of the unit 1 accident Thermal hydraulics and core degradation Fission product release and behaviour Chapter 3. Results of the unit 2 analyses Overview of the unit 2 accident Thermal hydraulics and core degradation Fission product release and behaviour Chapter 4. Results of the unit 3 analyses Overview of the unit 3 accident Unit 3 thermal hydraulics and core degradation Fission product release and behaviour Chapter 5. Atmospheric transport and dispersion: Results for Fukushima Daiichi units 1, 2 and 3 Unit 1 Unit 2 Unit 3 Comparisons for three units combined Estimated integral releases Chapter 6. Radiological measurements and backward calculations of the source term Dose rate measurements at the plant site and around Dose rate measurements/samplings in the Pacific Ocean Backwards calculation of source term by WSPEEDI Backwards calculation of source term by the GRS method Comparison of the GRS and WSPEEDI source term calculation results Chapter 7. Lessons learnt and conclusions from the BSAF Review of major technical findings Review of major impacts to the BSAF stakeholders Impact on industry practice in severe accidents Impact on Fukushima site decommissioning and Japanese industry stakeholders Impact on public confidence in the nuclear industry Overall conclusions References