Fuel assembly with consumable poison, and a method of operating a reactor

摘要

PCT No. PCT/FR95/01700 Sec. 371 Date Jun. 23, 1997 Sec. 102(e) Date Jun. 23, 1997 PCT Filed Dec. 20, 1995 PCT Pub. No. WO96/20484 PCT Pub. Date Jul. 4, 1996The fuel assembly for a pressurized water reactor comprises rods distributed at the nodes of a square array and containing the fuel material. Some of the rods have a first mass concentration of gadolinium lying in the range 5% to 12%. Four to twelve additional rods (16) contain gadolinium at a concentration lying in the range 0.5% to 2%.