Characterization of (Th,U)O2 fuel pellets made by impregnation technique

Fabrication of dense (Th,U)O2 pellets through microspheres impregnation technique

“…Since only hard opaque gel survived heat treatment steps, their characteristics are given in Table 1 (serial no. [8][9][10][11][12][13]. The good quality microspheres, which were not fractured in the drying and calcination steps were obtained with [Th] = 1.15-1.25 M and R = 1.25-1.35.…”

“…Several investigations have been made with the aim to develop the gel pelletization technique for the preparation of ThO 2 and (Th,U)O 2 pellets [1][2][3][4][5]. As the second option for reducing the time of fuel fabrication, a few alternatives such as the coated agglomerate pelletization (CAP) [6] and the particle/pellet impregnation [7,8] methods have been considered. In CAP process, the ThO 2 microspheres of 1-2 mm ø are prepared from natural ThO 2 powder by way of the extrusion spheronization route.…”

Synchrotron μ-XRF study on compositional uniformity of uranium-thorium oxide pellets prepared by different processes

“…India has vast resources of thorium and proposes to utilize it for electricity generation using different types of nuclear reactors having advanced and passive safety feature . Thorium‐based fuels have certain advantages over uranium and plutonium fuels . Different types of reactors having different nuclear fuel materials are proposed for Indian nuclear energy generation program.…”

A review on immobilization of phosphate containing high level nuclear wastes within glass matrix – Present status and future challenges

“…extracted from the spent fuels (Table 1; [2]). Needless to say, the actual compositions (chemistry and radiochemistry) of HLWs depend on reprocessing route adopted as well as on spent fuel compositions [3][4][5][6][7] and their irradiation history (type of reactors, pellet-cladding interactions [8], neutron flux, burn up, cooling period, etc. [9]).…”