grouping of fuel elements which is not taken apart during the charging and discharging of a reactor core, a set of fuel elements and associated components which are loaded into and subsequently removed from a reactor core as a single unit, a structured group of fuel rods (long, slender, metal tubes containing pellets of fissionable material, which provide fuel for nuclear reactors), kütuseelementide grupp, mida ei võeta lahti kütuse laadimisel ja eemaldamisel tuumareaktorist