[en] This is an annual report in a fiscal year 2007 that describes activities of the Reactor Fuel Examination Facility (RFEF), the Waste Safety Testing Facility (WASTEF), the Research Hot Laboratory (RHL) and the other research hot facilities in the Department of Hot Laboratories and Facilities. In RFEF, post irradiation examinations related to the Advanced LWR Fuel Performance and Safety Research Program were performed for the LWR fuels to evaluate the fuel behavior at the reactivity initiated accident and the loss of coolant accident. In WASTEF, Slow Strain Rate Tests (SSRT) and Uni-axial Constant Load Tensile tests (UCLT) of in-core materials in pressurized high-temperature water condition, stress corrosion cracking tests for high-performance fuel cladding material and calorific value measurement of pulse irradiated fuel in NSRR were carried out. In RHL, equipments were uninstalled from lead cells according to the decommissioning plan. And modification of fuel storage room was completed and has been started the operation and the carry-in of the un-irradiated uranium since March 2008. In addition, management of the other research hot facilities (No.1 Plutonium Laboratory, No.2 Research Laboratory, No.4 Research Laboratory, Analytical Chemistry Laboratory, Uranium Enrichment Laboratory, STEM (Simulation Test for Environmental Radionuclide Migration), CLEAR (Clean Laboratory for Environmental Analysis and Research) and fuel storage) were carried out. (author)