This is NKS NKS-R NKS-B News Seminars NKS Reports Phantom Library

You are here: Homepage NKS Reports View document

List all reports List all NKS-R reports List all NKS-B reports Search Reports  
NKS Programme Area:NKS-B
Research Area:Measurement Strategy, technology and QA
Report Number:NKS-215
Report Title:Assessment of weathering and leaching rates of Thule hot particles
Activity Acronym:HOTRATE
Authors:Per Roos, Iisa Outola, Ulrika Nygren, Henrik Ramebäck, Rajdeep Sidhu
Abstract:Within the current project a methodology for separating actinide particles originating from the Thule 1968 accident has been developed. Particles were completely isolated in water using visual and radiometric methods. The particles were attached electrostatic to a plastic support and could easily be moved to any container for leaching studies or other type of studies. Leaching and dissolution studies performed within the project indicate that some particles are relatively easily destroyed or leached while others are more refractory. The results shows that even though the oxide particles are hard to completely dissolve they release material even when exposed to weak solvents like water and salt solutions. Exposures to lung simulant fluids show relatively slow dissolution rates comparable to what is found using only water. Sequential extraction of particles shows that variation between particles is very large; some dissolve easily while some does not. Of radiological importance is the disruption of particles when exposed to dissolution.
Keywords:Thule; actinide particles; hot particles; plutonium; uranium; Pu-239; U-235; leaching; lung simulant fluid; stomach simulant fluid
Publication date:01 Mar 2010
ISBN:ISBN: 978-87-7893-285-3
Number of downloads:2343
Download:pdf NKS-215.pdf
Contact NKS   NKS Sekretariatet
Boks 49
DK-4000 Roskilde
  Telephone +45 46 77 40 41
E-mail: nks@nks.org 
 

Address for visitors
Directions and map

Privacy policy

Cookie policy

 

Website last modified: 03 December 2024