Radiological Effects Fukushima Dai-ichi Accident

1. Radiological Effects Fukushima Dai-ichi Accident Jim Lynch NRC Region III August 24, 2011

2. NRC Response Team • Based at U.S. Embassy in Tokyo • Colleagues from DOE, FDA, Military • Reactor Safety Team • Protective Measures Team

3. Goals • Assist the Japanese Government with incident response • Assist the American Ambassador with protection of U.S. citizens living in or visiting Japan

4. Process • Daily meetings with Japanese Government counterparts • Daily interactions with other U.S. Agencies and INPO • Americans advised to evacuate to 50 miles (80 km)

6. Integrated Dose 1 Year • Site ~400 mSv (40 rem) • 20-30 km ~200 mSv (20 rem) • Beyond 40 km ~20 mSv (2 rem)

8. Food and Water Supply Safety • Reviewed Japanese protocols • Resources and technical capability to identify and quarantine contaminated food and water • Contamination standards based on the same target doses as FDA

9. Food and Water Supply (cont.) • Consistent with international guidelines • Up-to-date radiological risk data • Applies conservative (protective) assumptions

10. Food Testing • Each food category is tested by Prefecture • If guidance levels exceeded, distribution blocked in affected prefecture • Must pass 3 consecutive tests to allow back into market

11. Water • Stopped using rainwater as drinking water source • Early positive test required restrictions • No issues with water supply since May 10, 2011

12. Seafood • Fishing not allowed in Fukushima waters within 20 km • Fishing vessels have loads surveyed at docks • Weekly samples of 2-3 species in each ocean layer

13. The Road to Sendai • Tohoku Expressway and Shinkansen Railway (bullet train) pass through the 50 mile evacuation zone • Tests performed by U.S. and Japanese governments • Open for travel

14. Reflections • It is a real honor to assist the Japanese people with this unbelievable disaster • Very warm, positive comments from Japanese citizens