Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Current status and progression of GERMINAL fuel performance code forSFR oxide fuel pins
2017 (English)Conference paper, Published paper (Refereed)
Place, publisher, year, edition, pages
2017.
National Category
Other Physics Topics
Identifiers
URN: urn:nbn:se:kth:diva-271248OAI: oai:DiVA.org:kth-271248DiVA, id: diva2:1416391
Conference
International Conference on Fast Reactors and Related Fuel Cycles: Next Generation Nuclear Systems for Sustainable Development (FR17)
Available from: 2020-03-23 Created: 2020-03-23 Last updated: 2020-04-07
In thesis
1. Modeling of Fission Product Behavior in Fast Reactors
Open this publication in new window or tab >>Modeling of Fission Product Behavior in Fast Reactors
2020 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [sv]

Den natriumkylda snabbreaktorn är en av kandidaterna till nästa generationens kärnenergisystem. De extrema förhållanden som kärnbränslet utsätts för i en sådan rektor kan leda till säregna konsekvenser. Till dessa hör formationen av så kallad JOG (franska för Joint Oxyde-Gaine = bränsle-kapsel-fog). Detta är ett lager av flyktiga klyvningsprodukter som, på grund av bränslets branta temperaturgradient, migrerat radiellt och deponerats mellan bränslets yttre vägg och kapselns inre vägg. Vid hög utbränning anses detta JOG-lager kunna medverka i korrosion av bränslekapseln, och är därför viktigt att studera. Denna avhandling presenterar arbete kopplat till simulering av klyvningsproduktkemi i snabba reaktorer i allmännhet, och bildande av JOG-lageri synnerhet. En modell, som utgår från CALPHAD-metoden och minimering av Gibbs energi, har utvecklats och integrerats med bränslestavprogrammet Germinal i syfte att beäkna tjockleken på JOG-lagret. Vissa klyvningsproduktföreningar har simulerats med täthetsfunktionalteori för att beräkna deras termodynamiska egenskaper.

Abstract [en]

The sodium cooled fast reactor is one of the candidates for the next generation of nuclear energy systems. The extreme conditions to which the fuel is exposed inside such a reactor may lead to some peculiar consequences. One of these is the formation of a layer of so-called JOG (French for Joint Oxyde-Gaine= Oxide-clad bond). This is a layer of volatile fission products thathave, due to the steep temperature gradient in the fuel, migrated radially and been deposited between the outer fuel wall and inner clad wall. At high burnup, the JOG is believed to be involved in cladding corrosion and is thus important to study. This thesis presents work related to the simulation of fission product chemistry in fast reactor oxide fuelsin general, and to the formation of the JOG layer in particular. A model, based on the CALPHAD method and Gibbs energy minimization to simulate the chemical state and transport of the fission products, has been developed and integrated with the Germinal fuel performance code in order to calculate the JOG layer thickness.Certain fission product compounds have also been simulated using density functional theory in order to study theirthermodynamic properties.

Place, publisher, year, edition, pages
ISBN AB, 2020. p. 61
Series
TRITA-SCI-FOU ; 2019:62
National Category
Other Physics Topics
Identifiers
urn:nbn:se:kth:diva-268642 (URN)978-91-7873-432-0 (ISBN)
Public defence
2020-02-17, Kollegiesalen, Brinellvägen 8, Stockholm, 13:00 (English)
Opponent
Available from: 2020-04-07 Created: 2020-02-19 Last updated: 2020-04-07Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other Physics Topics

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf