The following quote from the sourced Monsters & Critics article is really a side note to the main topic of the article which is stress tests to be performed on the nuclear power plants in Japan:
...As the financial bank stress tests Timothy Geithner is famous for touting were designed to reassure the financial markets, the nuclear power plant stress tests are designed to reassure the Japanese public so that nuclear power plants can be restarted, which were shut down due to the earthquake/tsunami.
Also Wednesday, a fire broke out briefly at a waste disposal facility of the Tokai No 2 Power Station in Ibaraki prefecture, 120 kilometres north-east of Tokyo. No radiation was been released, the government said.
At the plant, run by the Japan Atomic Power Co, waste materials caught fire when workers tried to drop them into a melting furnace. They extinguished the blaze with water and reported the incident to a local fire department, Kyodo News reported citing local officials.
I really would have liked to see more detail on this fire at the Tokai No 2 Power Station, such as the nature of the materials which caught on fire. Were the materials which caught on fire radioactive? If you burn radioactive stuff doesn't it release radiation in to the environment?
The only other article I could find on the fire was this two-liner by AGI News:
09:23 06 LUG 2011
(AGI) Tokyo - Almost four months after the Fukushima disaster, a fire started in the nuclear waste disposal plant near reactor No. 2 in Tokai, in the East of Japan. Official sources reported that the blaze is now under control and that no radiocative material leak occurred. The power plant is run by the Japan Atomic Power and is situated in the Ibaraki province, North of Tokyo. . .
 Japan to stress-test nuclear plants to reassure public, M & C (Monsters and Critics)
 BLAZE IN NUCLEAR POWER PLANT IN TOKAI, JAPAN, AGI News