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Geometrical alpha- and beta-dose distributions and production rates of radiolysis products in water in contact with spent nuclear fuel
KTH, Skolan för kemivetenskap (CHE), Kemi, Kärnkemi.
KTH, Skolan för kemivetenskap (CHE), Kemi, Kärnkemi.ORCID-id: 0000-0003-0663-0751
2006 (engelsk)Inngår i: Journal of Nuclear Materials, ISSN 0022-3115, E-ISSN 1873-4820, Vol. 359, nr 02-jan, s. 1-7Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A mathematical model for the dose distribution and production rates of radiolysis products in water surrounding spent nuclear fuel has been developed, based on the geometrical and energetic properties of radiation. The nuclear fuel particle is divided into layers, from which the radiation emits. The water is likewise divided into layers, where the doses are distributed. The doses are stored in vectors which are added to determine the total dose rate. A complete inventory with over 200 radionuclides has been used as input data for the model. The purpose of the model is to describe the geometrical dose distribution as a function of fuel age and burn-up, to be used as input data for kinetic modeling of the fuel dissolution. The results show that the P-dose contribution close to the spent fuel surface is negligible. Also, the variation in the relative OC/P dose contribution between different ages and burn-ups is insignificant. The alpha- and beta-dose rates vary between different burn-ups of the same age; the younger the fuel is, the larger is the difference. Exponential functions have been fitted to the relations between fuel age and average dose rate, giving useful expressions for determining average dose rates for fuel ages other than those covered in this work.

sted, utgiver, år, opplag, sider
2006. Vol. 359, nr 02-jan, s. 1-7
Emneord [en]
dissolution, oxidation, corrosion, uo2
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-16150DOI: 10.1016/j.jnucmat.2006.08.001ISI: 000242317000001Scopus ID: 2-s2.0-33750351933OAI: oai:DiVA.org:kth-16150DiVA, id: diva2:334192
Merknad
QC 20100811Tilgjengelig fra: 2010-08-05 Laget: 2010-08-05 Sist oppdatert: 2017-12-12bibliografisk kontrollert
Inngår i avhandling
1. The Steady-state Approach: A Model Describing the Dynamics of Spent Nuclear Fuel Dissolution in Groundwater
Åpne denne publikasjonen i ny fane eller vindu >>The Steady-state Approach: A Model Describing the Dynamics of Spent Nuclear Fuel Dissolution in Groundwater
2007 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
sted, utgiver, år, opplag, sider
Stockholm: KTH Royal Institute of Technology, 2007. s. v, 42
Serie
TRITA-CHE-Report, ISSN 1654-1081 ; 2007:20
HSV kategori
Identifikatorer
urn:nbn:se:kth:diva-4336 (URN)978-91-7178-631-9 (ISBN)
Disputas
2007-04-27, K1, KTH, Teknikringen 56, Stockholm, 10:00 (engelsk)
Opponent
Veileder
Merknad

Qc 20170222

Tilgjengelig fra: 2007-04-17 Laget: 2007-04-17 Sist oppdatert: 2017-02-22bibliografisk kontrollert

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