BROWSE

Related Researcher

Author's Photo

Choi, Sungyeol
Nuclear Fuel Cycle Engineering Lab (NCEL)
Research Interests
  • Fuel Cycle Chemistry; Nuclear Plant Chemistry; Non-aqueous Electrochemistry; Nuclear Security

ITEM VIEW & DOWNLOAD

Environmental assessment of advanced partitioning, transmutation, and disposal based on long-term risk-informed regulation: PyroGreen

Cited 3 times inthomson ciCited 3 times inthomson ci
Title
Environmental assessment of advanced partitioning, transmutation, and disposal based on long-term risk-informed regulation: PyroGreen
Author
Jung, Hyo SookChoi, SungyeolHwang, Il SoonSong, Myung-Jae
Keywords
Spent nuclear fuels; Geological repository assessments; Nuclear waste regulation; Partitioning and transmutation; Decontamination factors; PyroGreen; RADIOACTIVE-WASTE DISPOSAL; REPOSITORY; EXTRACTION; FISSION
Issue Date
2012-07
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
PROGRESS IN NUCLEAR ENERGY, v.58, no., pp.27 - 38
Abstract
The safety of spent nuclear fuel (SNF) storage has become one of the major issues of nuclear power plant operation. Direct disposal and recycling have both been criticized by the general public due to uncertainty of the long-term safety of SNF and high level waste (HLW) repositories. To meet the goal of sustainable nuclear energy, an innovative recycling approach using pyrochemical partitioning and transmutation termed PyroGreen, which is a conceptually advanced pyrochemical partitioning flowsheet, has been proposed to eliminate the need for HLW repositories. From the previous partitioning process, PyroGreen uses a combination of hull electrorefining, reductive extraction, and selective oxidation to further decontaminate SNF and HLW into low- and intermediate level waste (LILW). This paper examines the long-term environmental performance of a geological repository that houses all of the final PyroGreen-produced wastes while describing the feasibility of PyroGreen partitioning and transmutation. The final PyroGreen wastes are evaluated based on long-term risk-informed criteria: alpha-emitting isotope concentration, heat generation, and radiation dose in the surrounding biosphere. All final wastes arising from PyroGreen are to be disposed of in a geological repository at an intermediate depth, in compliance with new International Atomic Energy Agency Safety Guide for LILW. Migration assessment found that several long-lived fission products including C-14, Cl-36, Se-79, Sn-125, and I-129 dominate the long-term dose rate, whereas transuranic elements govern the risk of an inadvertent human intrusion scenario. In order to turn entire batches of SNF from 24 light water reactors with 1000 MWe with a design life of 40 years into LILW, we determined and compared the required decontamination factors of the key radionuclides for between intermediate-depth and near-surface disposal. (C) 2012 Elsevier Ltd. All rights reserved
URI
Go to Link
DOI
10.1016/j.pnucene.2012.02.003
ISSN
0149-1970
Appears in Collections:
MEN_Journal Papers
Files in This Item:
Environmental assessment of advanced partitioning, transmutation, and disposal based on long-term risk-informed regulation PyroGreen.pdf Download

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU