A transport model for radioactive corrosion product deposition in an LMFBR

• Published in: Nuclear engineering and design 1975-01, Vol.32 (2), p.246-251
• Main Authors: Cooper, M.H., Taylor, G.R.
• Format: Article
• Language: English
• ISSN: 0029-5493; 1872-759X
• DOI: 10.1016/0029-5493(75)90134-X

Distribution of radioactive corrosion products, cobalt-58, cobalt-60, and manganese-54, from the core of a liquid-metal fast breeder reactor (LMFBR) is analytically modeled using a mass-transfer controlled deposition process. ‘Sticking coefficients’, which are experimentally determined from corrosion testing of irradiated stainless steel specimens, modify the mass transfer coefficient to account for the nuclides transported to a surface which do not adhere or are subsequently re-dissolved. Retention of cobalt by stainless steel surfaces is found to be greater than that of manganese by a factor of from 5 to 8. Corrosion product activities on the surfaces of primary system components of a typical LMFBR are calculated both with and without surface traps consisting of knitted stainless steel wire or corrugated stainless steel foil. Corrugated foil was about twice as effective at the same pressure drop in reducing the gamma flux from corrosion products as the knitted mesh packing.