Fukushima Daiichi nuclear disaster
E42988
The Fukushima Daiichi nuclear disaster was a 2011 catastrophic failure at a Japanese nuclear power plant triggered by a massive earthquake and tsunami, leading to core meltdowns, radioactive releases, and long-term environmental and policy impacts worldwide.
Observed surface forms (1)
| Surface form | Occurrences |
|---|---|
| Fukushima nuclear meltdown | 1 |
Statements (59)
| Predicate | Object |
|---|---|
| instanceOf |
industrial accident
ⓘ
nuclear disaster ⓘ radiological accident ⓘ technological disaster ⓘ |
| affectedReactor |
Fukushima Daiichi Nuclear Power Plant
ⓘ
surface form:
Fukushima Daiichi Unit 1
Fukushima Daiichi Unit 2 ⓘ Fukushima Daiichi Unit 3 ⓘ Fukushima Daiichi Unit 4 ⓘ |
| cause |
loss of cooling
ⓘ
loss of off-site power ⓘ loss of on-site backup power ⓘ station blackout ⓘ |
| classification | INES Level 7 ⓘ |
| country | Japan ⓘ |
| countryRegulator |
Nuclear Regulation Authority (Japan)
ⓘ
Nuclear and Industrial Safety Agency ⓘ |
| decommissioningStartDate | 2011 ⓘ |
| environmentalImpact |
marine contamination in Pacific Ocean
ⓘ
radioactive fallout over eastern Japan ⓘ |
| estimatedDecommissioningDuration | 30–40 years ⓘ |
| evacuationRadius | 20 km ⓘ |
| expandedEvacuationZone | up to 30 km ⓘ |
| governmentResponse |
declaration of nuclear emergency by Japanese government
ⓘ
mass evacuation of local population ⓘ |
| healthImpact |
increased radiation exposure for emergency workers
ⓘ
psychological stress for evacuees ⓘ |
| impact |
global nuclear policy changes
ⓘ
public opposition to nuclear power ⓘ shutdown of nuclear reactors in Japan ⓘ stricter nuclear safety regulations worldwide ⓘ |
| INESLevel | 7 ⓘ |
| location |
Fukushima Daiichi Nuclear Power Plant
ⓘ
Futaba, Fukushima Prefecture ⓘ Ōkuma, Fukushima Prefecture ⓘ |
| mediaCoverage | extensive international news coverage ⓘ |
| notableSubstanceReleased |
cesium-134
ⓘ
cesium-137 ⓘ iodine-131 ⓘ xenon-133 ⓘ |
| operator |
Tokyo Electric Power Company
ⓘ
surface form:
TEPCO
Tokyo Electric Power Company ⓘ |
| reactorType | boiling water reactor ⓘ |
| relatedTo |
2011 Tōhoku earthquake and tsunami
ⓘ
Japanese nuclear power phase-out debate ⓘ |
| result |
contamination of air, soil, and water
ⓘ
core meltdown in Unit 1 ⓘ core meltdown in Unit 2 ⓘ core meltdown in Unit 3 ⓘ decommissioning of Fukushima Daiichi plant ⓘ hydrogen explosions in reactor buildings ⓘ long-term evacuation zones ⓘ release of radioactive materials ⓘ |
| sameINESLevelAs | Chernobyl disaster ⓘ |
| startDate | 2011-03-11 ⓘ |
| studiedBy |
International Atomic Energy Agency
ⓘ
United Nations Scientific Committee on the Effects of Atomic Radiation ⓘ World Health Organization ⓘ |
| triggeredBy |
2011 Tōhoku earthquake and tsunami
ⓘ
surface form:
2011 Tōhoku earthquake
2011 Tōhoku tsunami ⓘ |
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Fukushima nuclear meltdown