Fukushima: What Went Wrong?

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In The Media

Fukushima: What Went Wrong?

Although Japan's Fukushima reactors have been shut down, their fuel rods still need to cool down, so that the remaining water meant to cool the core does not boil and expose the radioactive rods.

By Mark Hibbs

Published on Mar 11, 2011

Source: CBC Radio

In reaction to the earthquake and tsunami that struck Japan, the Fukushima boiling water reactors automatically shut down. However, within the first few hours, the site’s main cooling system failed to function properly. Though the nuclear chain reaction is no longer proceeding, the fuel rods still need to cool, explained Carnegie’s Mark Hibbs on CBC Radio. The fuel is surrounded by water, which is supposed to act as a coolant. However, Hibbs said, if the water around the core were to boil, then the fuel would be exposed. Though Japan has an advanced nuclear energy industry, this crisis prompts a need to reconsider whether older equipment, such as that used in the Fukushima reactors, is seismically sound.

About the Author

Mark Hibbs

Nonresident Senior Fellow, Nuclear Policy Program

Hibbs is a Germany-based nonresident senior fellow in Carnegie’s Nuclear Policy Program. His areas of expertise are nuclear verification and safeguards, multilateral nuclear trade policy, international nuclear cooperation, and nonproliferation arrangements.

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Carnegie does not take institutional positions on public policy issues; the views represented herein are those of the author(s) and do not necessarily reflect the views of Carnegie, its staff, or its trustees.

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