Tokyo Electric Power Co. has finally moved into the decommissioning process at the Fukushima No. 1 nuclear plant, despite doubt over its ability to manage a highly dangerous effort that will take decades.

The start Monday of removing fuel from the cooling pool high up in the damaged reactor 4 building was one of the few bright pieces of news to come out recently from the plant, which has been plagued with frequent radioactive water leaks and other troubles over the past year.

But the work poses another challenge to the utility, with its success or failure expected to affect the following process of retrieving the fuel from the pools for reactors 1, 2 and 3, as well as the melted fuel inside the damaged cores.