Potential generation and radiological impacts of gaseous /sup 14/C released during reprocessing of advanced LMFBR fuels

Tennery, V.J.; Bomar, E.S.; Bond, W.D.; Kaye, S.V.; Morse, L. E.; Till, John E.

doi:10.2172/7269869

Cited by 5 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Oxide fuels in Liquid Metal Fast Breeder Reactors (LHPBRs) 14 compare favorably with LOT fuels in their production of C; Davis (1977) gives a median estimate of 6.3 Ci/Gw>-yr in the fuel as it enters the reprocessing plant (an additional 12.8 Ci is retained in the cladding and core structural materials). Some advanced fast breeder reactor fuels, however, have the potential for producing larger amounts of C than LOT fuels; this increased production 15 rate is particularly important for nitride fuel, and H enrichment 14 will likely be needed to minimize the production of Z in the fuel elements (Tennery et al 1976). when C is released to the ataosphere as carton dioxide, it is incorporated into the tissues of plants through photosynthesis and reaches aan through his food chain; man also absorbs soae of the 14 airborne 00-by inhalation, but tr.…”

Section: Iwtiodoctioiimentioning

confidence: 99%

Diffusion-type model of the global carbon cycle for the estimation of dose to the world population from releases of carbon-14 to the atmosphere

Killough¹

1977

View full text Add to dashboard Cite

It is a pleasure to recognize the contributions of a nuaber of individuals to the work described in this document and to the preparation of the report itself. All are staff members of Oak Fidge National Laboratory. M. F.. Emanuel, C. F. Baes, Jr., and A. R. Olsen served as technical reviewers and suggested a number of improvements in the manuscript. C. C. Travis also read the manuscript and provided oral comments. Special thanks are due J. S. Olson for his continuing interest in t*ie work and for his regular interactions with the author; he read two successive drafts of the manuscript and provided numerous ideas and suggestions.

show abstract

Section: Iwtiodoctioiimentioning

confidence: 99%

Diffusion-type model of the global carbon cycle for the estimation of dose to the world population from releases of carbon-14 to the atmosphere

Killough¹

1977

View full text Add to dashboard Cite

show abstract

“…fuels made with carbide or nitride instead of oxide) have the potential for producing significantly greater amounts of C than LWR fuels. This increased production rate is particularly important for nitride fuel, and I5N enrichment will likely be needed to minimize the production of I4C in the fuel elements (Te76).…”

Section: Introductionmentioning

confidence: 99%

A New Look at the Dosimetry of 14C Released to the Atmosphere As Carbon Dioxide

Gg¹,

Ps²

1978

Health Physics

View full text Add to dashboard Cite

On the basis of a steady-state specific-activity model, dose-rate factors are derived for various organs of Reference Man (ICRP Publication 23) corresponding to the ingestion of I4C in dietary carbon and the inhalation of I4C-labeled carbon dioxide. In a uniformly contaminated exposure medium, ingestion accounts for more than 99% of the C dose to individuals. The specific-activity factors are compared with dynamic models of carbon metabolism such as those of ICRP Publications 2 and 10, which appear to underestimate the mean residence times of carbon in some tissues. Renormalization of meteorological data used in local atmospheric dispersion models that are applied to I4CO, transport may be required in order to restrict sampling to times when photosynthesis can occur; a sample calculation based on weather-station data from Knoxville, Tennessee, shows a factor-of-three increase in the estimated dose to a maximally exposed individual near an elevated release source (100-m stack) when renormalization is done. Methods for calculating the dose to a population near the source of release (or fed from local agricultural production) are derived. The 14C dose to the world population, including the infinite-time dose commitment, is considered, and a comparison of estimates by several investigators, including the present authors, is presented.

show abstract