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Radioactivity in the primary system of sodium-cooled fast reactors (in German)

Journal Article · · Kernenergie, v. 16, no. 4, pp. 96-105
OSTI ID:4330854
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Sodium-cooled fast reactors are operated under conditions of highly radioactive primary coolant systems. In the last 10 years experience has been gained with the operation of highly radioactive sodium coolant loops in experimental fast and thermal reactors. In addition to unavoidable activation of the coolant, radioactive contamination by fission products and corrosion producta was observed. Economical effects on maintenance and repair works may arise particularly from the long-lived nuclides. The problem of radioactive contamination of the primary coolant loop becomes important by the high burnup, elevated sodium temperatures, and planned application of vented fuel elements intended for the concepts of large fast reactors. This trend in further development of fast reactors at present is confronted with the insufficient possibilities of decreasing radioactive contamination. The experience gathered with the experimental reactors proves applicable to larger reactors but qualitatively. It has been obtained as a secondary result during operation or in failure studies. Therefore, the theoretical and experimental fundamentals have been thoroughly investigated recently in order to find starting points for practical solutions with respect to large reactors. (auth)
Research Organization:
Zentralinstitut fuer Kernforschung, Rossendorf, Ger.
NSA Number:
NSA-29-020097
OSTI ID:
4330854
Journal Information:
Kernenergie, v. 16, no. 4, pp. 96-105, Journal Name: Kernenergie, v. 16, no. 4, pp. 96-105; ISSN KERNA
Country of Publication:
Country unknown/Code not available
Language:
German

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Related Subjects

*FAST REACTORS-- PRIMARY COOLANT CIRCUITS
*PRIMARY COOLANT CIRCUITS-- RADIOACTIVITY
*SODIUM COOLED REACTORS-- PRIMARY COOLANT CIRCUITS
BURNUP
CONTAMINATION
CORROSION PRODUCTS
FISSION PRODUCTS
N77500* --Reactors--Power Reactors
Breeding
NUCLEAR FUELS
SODIUM
TEMPERATURE DEPENDENCE