Testing of solid breeder blanket issues may be constrained by available test device parameters such as heat source and pulse length. Consequently, it is important to consider methods to preserve full-reactor conditions under reduced device parameters. Analyses of several aspects of solid breeder thermal behavior were performed to explore options for scaling this behavior and to identify limits on the test device parameters beyond which test results would not reasonably extrapolate to reactor conditions. The results suggest that solid breeder blankets need at least 1 MW/m2 neutron wall load, 0.2 MW/m2 surface heat load and 500 s burn length.