Spatial nonuniformity of fuel burnup in VV�R reactors

Autor:	M. A. Sunchugashev, V. D. Simonov, L. I. Golugev, L. I. Gorobtsov, G. A. Kulakov
Rok vydání:	1976
Předmět:	Cross section (physics) Azimuthal asymmetry Nuclear Energy and Engineering Chemistry Nuclear engineering General Engineering VVER Nuclear chemistry Burnup
Zdroj:	Soviet Atomic Energy. 40:247-250
ISSN:	1573-8205 0038-531X
DOI:	10.1007/bf01120158
Popis:	1. The cassettes of the VVER show considerable nonuniformity in burnup over the height and cross section; this to decrease as the general burnup increases. 2. Absorbing elements reduce the nonuniformity in the height distribution somewhat, but increase the nonuniformity over the cross section of the cassette and substantially reduce the extent of burnup in adjacent fuel pins. 3. Boron control produces substantially less nonuniformity in burnup both in height and cross section. 4. There is considerable nonuniformity in burnup across the cross section of a fuel pin on account of self-screening; there is also appreciable azimuthal asymmetry in burnup in a pin, which is particularly prominent for239Pu, as is clear from the distribution of106Ru.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::64e0f02705e5a069e84296db16cb1ae5 https://doi.org/10.1007/bf01120158 Zobrazit plný text záznamu Full text from SpringerLink