Thermochemical safety evaluation of tertiary pyridine resin for the application to multi-functional reprocessing process “Adv.-ORIENT cycle development”

Publication year: 2011
Source: Progress in Nuclear Energy, In Press, Corrected Proof, Available online 14 June 2011

Yoshihiko, Sato , Ken, Okada , Miyako, Akiyoshi , Takehiro, Matsunaga , Shin-ichi, Koyama , …

As part of “Adv.-ORIENT” (Advanced Optimization by Recycling Instructive ElemeNTs) cycle technologies, which aim to develop a new fuel cycle based on a fast reactor cycle system, the reactivity between a tertiary pyridine resin (TPR) and a methanol-nitric acid solution at elevated temperatures has been investigated in order to prevent runaway reactions. The influence of metal ions, which simulate metallic elements in nuclear spent fuels, and that of the composition of the methanol-nitric acid solution, on the thermal hazards of the mixture of TPR and the methanol-nitric acid solution has been estimated through thermal analysis and gram-scale heating experiments. Simulated…

 Highlights: ► The reactivity of a tertiary pyridine resin (TPR) was investigated. ► The influence of metal ions was estimated. ► And the influence of the composition of the methanol-HNO3 solution was estimated. ► Metal ions have little influence on the thermal stability of the TPR system. ► The vigorous reactions would occur minimally in a closed and reflux condition.