Bulk shielding experiments on SS316 and SS316/water for D-T neutrons were performed under one of the ITER/EDA R&D tasks at FNS. The various experimental data for neutron and gamma-ray, particularly neutron spectra below 1 MeV and gamma-ray heating rate, were measured to the depth of 914 mm. The MCNP and DOT3.5 codes were used with nuclear data libraries based on JENDL-3.1, -3.2, -Fusion File and FENDL/E-1.0 for the analyses of these experiments. The MCNP calculations with JENDL-Fusion File, and FENDL/E-1.0 agreed with the measurements of the SS316 and SS316/water experiments within 30 %. It was pointed out that the group constants of JENDL-3.2 had some problems in the thermal group and that the self-shielding correction was inadequate in the group constants of the FENDL/E-1.0.
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