Slightly Enrichment Uranium Fuel for Low-Void Reactivity

摘要

The present invention relates to a low-enriched uranium fuel for low bubble reactivity, and in particular, a core rod made of stainless steel in a nuclear fuel consisting of a central rod, an inner ring rod, a heavy ring rod, and a foreign exchange rod, and an axial hollow in the center thereof, In the normal operation, the stainless steel rod acts as a moderator, increasing the economics of neutrons and applying it to a low enriched or circulating uranium fuel bundle. will be.;A first feature of the present invention for achieving the above object is characterized in that it is provided with a deceleration means made of an iron member to reduce the bubble reactivity in the nuclear fuel consisting of a central rod, inner ring rod, heavy ring rod, and foreign exchange rod.;In addition, the second feature of the present invention is characterized in that the central rod is made of stainless steel so that the bubble reactivity in the nuclear fuel consisting of the central rod, inner ring rod, heavy ring rod, and foreign exchange rod.