This must be part of that 1 billion yen that the Ministry of Foreign Affairs demanded in the 3rd supplementary budget.
12 IAEA experts for 9 days in Japan including travel days.
From Yomiuri Shinbun (10/4/2011):
On the October 4 press conference Chief Cabinet Secretary Fujimura announced that the government will accept "International Decontamination Mission" from IAEA from October 7 to 15 to assist in decontamination of the radioactive materials from the Fukushima I Nuclear Power Plant accident.
The Japanese government has invited the Mission consisting of 12 experts. The Mission will support the decontamination efforts in Japan, evaluate the efforts and share information. It is expected to report on the findings.
The last time the IAEA experts visited Japan was to "investigate" the Fukushima I Nuke Plant accident back in May. They duly issued the report, finding the Japanese government's response to the disaster "well-organized". IAEA chief Amano did his personal tour of the plant on July 25.