Crane units are installed over the spent fuel pool inside the No.4 reactor building at the tsunami-crippled Tokyo Electric Power Co's (TEPCO) Fukushima Daiichi nuclear power plant in Fukushima ... more 
Crane units are installed over the spent fuel pool inside the No.4 reactor building at the tsunami-crippled Tokyo Electric Power Co's (TEPCO) Fukushima Daiichi nuclear power plant in Fukushima prefecture in this November 6, 2013 file photo released by Kyodo. TEPCO will as early as this week begin removing 400 tonnes of highly irradiated spent fuel from the plant's unstable Reactor No. 4 in a hugely delicate and unprecedented operation fraught with risk. To match JAPAN-FUKUSHIMA/REMOVAL Mandatory Credit. REUTERS/Kyodo/Files (JAPAN - Tags: DISASTER ENERGY) ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS PICTURE IS DISTRIBUTED EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS. MANDATORY CREDIT. JAPAN OUT. NO COMMERCIAL OR EDITORIAL SALES IN JAPAN. YES less 
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Reuters | Photo By KYODO / REUTERS
Tue, Nov 12, 2013 4:09 PM EST