Safety research in nuclear fuel cycle at PNC

PNC TN1410 98-018, 69 Pages, 1998/09

PNC-TN1410-98-018.pdf:2.0MB

This report collects the results of safety research in nuclear fuel cycle at power reactor ans nuclear fuel development corporation, in order to answer to the questionnaire of OECD/NEA. The questionnaire request to inelude information concerning to research topic, description, main results (if available), reference documents, research institutes involved, sponsoring organization and other pertinent information about followings: (1) Recently completed reseach projects (2) Ongoing (current) research projects achievements on following items are omitted by request of oecd/nea. Uranium mining and milling, uranium refining and conversion to UF, uranium enrichment, fuel manufacturers, spent fuel storage, radioactive waste management, transport of radioactive materials, decommissioning we select topics from the fields of a (1) Nuclear installation, (2) Seismic, and (3) PSA, in projects from frame of annual safety research plan for nuclear installations established by nuclear safety ...

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PNC TN7510 96-002, 10 Pages, 1996/05

PNC-TN7510-96-002.pdf:1.2MB

no abstracts in English

Literature survey on extractants for liquid-liquid extraction applied to nuclear fuel cycles

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PNC TN8420 95-002, 140 Pages, 1995/01

PNC-TN8420-95-002.pdf:3.16MB

In the field of uranium ore refining and spent fuel reprocessing, a lot of extractants capable of recovering actinides have been innovated, and some of which have been developed in actual industrial scale processes. Extractability against trivalent actinides on each extractants were evaluated in this report. And as for the compounds which showed excellent extractability for Americium, their extraction characteristics for trivalent actinides, such as extraction behavior, mechanism, ligand structure and conformation of complexes, were evaluated, and filed as data-base. Based on these works, some of extractant were newly identified as candidate to apply Americium recovering. The most appropriate compounds for trivalent actinide separation can be generally found in the neutral bidentate organic compound groups: Especially, some derivatives belongs to Diphosphineoxide, Carbamoyl-methylphosphine oxide and Propandiamide were superior to give sufficiently excellent property even in higher nitric acid(13M) solutions. Innovative research towards developping new extractants and extraction system seems to be directed to ; (1)investigate new types of extractant sustained by a different kind of complexing mechanism, (2)evaluate synergistic effect of adducts, diluents even including conventional extractants.

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PNC TN6510 94-001, 19 Pages, 1994/09

PNC-TN6510-94-001.pdf:0.65MB

no abstracts in English

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; Asano, Tomohiro; *

PNC TN7420 92-018, 53 Pages, 1992/06

PNC-TN7420-92-018.pdf:1.4MB

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