Abstract: Globose-conduit (GC) perimeter boundaries formations mass energy highest conserving (MEHC) Sets, balanced nuclear power plants, in millennium lifespan generate safest environmentally most friendly electric power; said perimeter boundaries' formations, multiple and serial enclosures, constitute a globose foundation globose reactor vessel, a containment building with a lower perimeter ancillary annex building for multiple primary coolant loops, light water reactors pressurized system, GC conduit tuned piping mass energy processes and buildings complex, boundaries safely closed perimeters. Two or four globose steam generators/separators two or four high pressure pumps' coolant loops and the reactor's support equipment floors in the annex building outside of the containment symmetrically align high pressure and temperature GC MEHC boundaries respectively two or four processes generated electrons turbine-generator buildings.