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Feasibility Study on Nitrogen-15 Enrichment and Recycling System for Innovative FR Cycle System With Nitride Fuel

[+] Author Affiliations
Masaki Inoue, Kiyoshi Ono, Tsuna-aki Fujioka, Koji Sato, Takeo Asaga

Japan Nuclear Cycle Development Institute, O-arai, Ibaraki, Japan

Paper No. ICONE10-22622, pp. 417-432; 16 pages
doi:10.1115/ICONE10-22622
From:
  • 10th International Conference on Nuclear Engineering
  • 10th International Conference on Nuclear Engineering, Volume 4
  • Arlington, Virginia, USA, April 14–18, 2002
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 0-7918-3598-7 | eISBN: 0-7918-3589-8
  • Copyright © 2002 by ASME

abstract

Highly-isotopically-enriched nitrogen (HE-N2 ; 15 N abundance ≥ 99.9%) is indispensable for a nitride fueled fast reactor (FR) cycle to minimize the effect of carbon-14 (14 C) generated mainly by 14 N(n,p)14 C reaction in the core on environmental burden. Thus, the development of inexpensive 15 N enrichment and recycling technology is one of the key aspects for the commercialization of a nitride fueled FR cycle. Nitrogen isotope separation by the gas adsorption technique was experimentally confirmed in order to obtain its technological perspective. A conventional pressure swing adsorption technique, which is already commercialized for recovering the nitrogen gas from multi-composition gas-mixture, would be suitable for recovering in both reprocessing and fuel fabrication to recycle the HE-N2 gas. A couple of the nitride fuel cycle system concepts including the reprocessing and fuel fabrication process flow diagrams with the HE-N2 gas recycling were newly designed for both aqueous and non-aqueous (pyrochemical) nitride fuel recycle plants, and also the effect of the HE-N2 gas recycling on the economics of each concept was evaluated.

Copyright © 2002 by ASME
Topics: Recycling , Fuels , Cycles , Nitrogen

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