A post-irradiation study of deposits in the streaming stabilizer of the KEMA suspension test reactor

P. J.C. Bloem; A. C. Demildt

doi:10.1016/0022-3115(85)90004-2

A post-irradiation study of deposits in the streaming stabilizer of the KEMA suspension test reactor

P. J.C. Bloem, A. C. Demildt

Research output › peer-review

Abstract

During critical operation of the KEMA Suspension Test Reactor (KSTR) deposition of fuel particles occurred onto the wall of the stabilizer, situated in the reactor core. After stopping of the KSTR operation the weight of the recovered fuel from the stabilizer amounted to nearly two kilograms. The thickness of the deposition layer varied from 17 to 20 mm. Post-irradiation examination revealed that during critical operation there had been a radial temperature gradient similar to that in some LWR fuel. At the centre the operation temperature was about 3000°C, leading to partial fuel melting. In addition migration of uranium, thorium, iron and chromium was found, which can be explained by an evaporation-condensation process. It was noticed further that drifting of the pores was dependent on their position in the fuel layer.

Original language	English
Pages (from-to)	164-178
Number of pages	15
Journal	Journal of Nuclear Materials
Volume	136
Issue number	2-3
DOIs	https://doi.org/10.1016/0022-3115(85)90004-2
State	Published - Nov 1985

ASJC Scopus subject areas

Nuclear and High Energy Physics
General Materials Science
Nuclear Energy and Engineering

Access to Document

10.1016/0022-3115(85)90004-2

Cite this

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title = "A post-irradiation study of deposits in the streaming stabilizer of the KEMA suspension test reactor",

abstract = "During critical operation of the KEMA Suspension Test Reactor (KSTR) deposition of fuel particles occurred onto the wall of the stabilizer, situated in the reactor core. After stopping of the KSTR operation the weight of the recovered fuel from the stabilizer amounted to nearly two kilograms. The thickness of the deposition layer varied from 17 to 20 mm. Post-irradiation examination revealed that during critical operation there had been a radial temperature gradient similar to that in some LWR fuel. At the centre the operation temperature was about 3000°C, leading to partial fuel melting. In addition migration of uranium, thorium, iron and chromium was found, which can be explained by an evaporation-condensation process. It was noticed further that drifting of the pores was dependent on their position in the fuel layer.",

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N2 - During critical operation of the KEMA Suspension Test Reactor (KSTR) deposition of fuel particles occurred onto the wall of the stabilizer, situated in the reactor core. After stopping of the KSTR operation the weight of the recovered fuel from the stabilizer amounted to nearly two kilograms. The thickness of the deposition layer varied from 17 to 20 mm. Post-irradiation examination revealed that during critical operation there had been a radial temperature gradient similar to that in some LWR fuel. At the centre the operation temperature was about 3000°C, leading to partial fuel melting. In addition migration of uranium, thorium, iron and chromium was found, which can be explained by an evaporation-condensation process. It was noticed further that drifting of the pores was dependent on their position in the fuel layer.

AB - During critical operation of the KEMA Suspension Test Reactor (KSTR) deposition of fuel particles occurred onto the wall of the stabilizer, situated in the reactor core. After stopping of the KSTR operation the weight of the recovered fuel from the stabilizer amounted to nearly two kilograms. The thickness of the deposition layer varied from 17 to 20 mm. Post-irradiation examination revealed that during critical operation there had been a radial temperature gradient similar to that in some LWR fuel. At the centre the operation temperature was about 3000°C, leading to partial fuel melting. In addition migration of uranium, thorium, iron and chromium was found, which can be explained by an evaporation-condensation process. It was noticed further that drifting of the pores was dependent on their position in the fuel layer.

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