Seismic proving test of BWR primary loop recirculation system

The seismic proving test of BWR Primary Loop Recirculation system is the second test to use the large-scale, high-performance vibration table of Tadotsu Engineering Laboratory. The purpose of the test is prove the seismic reliability of the primary loop recirculation system (hereinafter abbreviated as PLR), one of the most important safety components in the BWR nuclear plants, and also to confirm the adequacy of seismic analysis method used in the current seismic design. To achieve the purpose, the test was conducted under conditions as near as possible to those for the actual systems using a test model of full scale with the structure as close as possible to that of the actual plants.