One consequence of the Japanese earthquake and tsunami that is not receiving as much press as the ongoing struggle to cool the damaged reactors, but which continues to influence more people is the lack of fuel. Nine of the Japanese refineries were damaged and put out of action, and this dropped the amount of fuel being refined from 4,500,000 bd down to 3,100,000 bd. (Note that the Guardian report I quoted earlier was off by a factor of ten.) The lack of fuel for transportation affects not only those in the disaster area, but also those away from it, since food and fuel itself depend on transport to move it to customers around the country.
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There are several different aspects to the problem, first the oil has to come ashore. With ports closed and unable to re-open for possibly months, shipments from the Middle East, which supplies 80% of Japan’s need, have now been curtailed until the situation becomes clearer. Within the country the Japanese Government has released around 8 million barrels of oil from their strategic reserve. It is also shipping 250,000 barrels of refined product to the area affected by sea (though this runs into the issue of how to get into the ports and distribution network). At Chiba some of the port has been able to re-open but not the terminal that fed to the Cosmo refinery (since that had burned).
http://www.theoildrum.com/node/7697