Journal Article

FZJ-2022-01300

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Caesium and iodine release from spent mixed oxide fuels under repository relevant conditions: Initial leaching results

Schreinemachers, C. (Corresponding author)FZJ* ; Leinders, G. ; Mennecart, T. ; Cachoir, C. ; Lemmens, K. ; Verwerft, M. ; Brandt, F.FZJ* ; Deissmann, G.FZJ* ; Modolo, G.FZJ* ; Bosbach, D.FZJ*

2022
Cambridge University Press Cambridge

This record in other databases:      

Please use a persistent id in citations: http://hdl.handle.net/2128/31627  doi:10.1557/s43580-022-00220-7

Abstract: Autoclave leaching experiments are conducted on three well-characterised, irradiated, and cladded mixed oxide fuel-rod segments with burnups ranging from 29 GWd/t_HM to 52 GWd/t_HM to investigate the instant release fraction of fssion gases and long-lived fssion products and to assess the long-term fuel matrix corrosion. The segments are exposed to bicarbonate solutions as reference groundwater at neutral pH and a synthetic young cementitious water at pH 13.5 under reducing atmosphere (4 vol% H₂ in Ar at 40 bar pressure), since 2018. The initial leaching results for the fssion products caesium and iodine as representative elements of the instant release fraction were found to depend on the leachate composition as well as on the fuel burnup.

---

Contributing Institute(s):

1. Nukleare Entsorgung und Reaktorsicherheit (IEK-6)

Research Program(s):

1. 1411 - Nuclear Waste Disposal (POF4-141) (POF4-141)

Appears in the scientific report 2022

---

Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Emerging Sources Citation Index ; SCOPUS ; Web of Science Core Collection

---