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Title: Impact of Reprocessed Uranium Management on the Homogeneous Recycling of Transuranics in PWRs

Abstract

This article presents the results of a neutronics analysis related to the homogeneous recycling of transuranics (TRU) in PWRs with a MOX fuel using enriched uranium instead of depleted uranium. It also addresses an often, if not always, overlooked aspect related to the recycling of TRU in PWRs, namely the use of reprocessed uranium. From a neutronics point of view, it is possible to multi-recycle the entirety of the plutonium with or without neptunium and americium in a PWR fleet using MOX-EU fuel in between one third and two thirds of the fleet. Recycling neptunium and americium with plutonium significantly decreases the decay heat of the waste stream between 100 to 1,000 years compared to those of an open fuel cycle or when only plutonium is recycled. The uranium present in MOX-EU used fuel still contains a significant amount of 235uranium and recycling it makes a major difference on the natural uranium needs. For example, a PWR fleet recycling its plutonium, neptunium and americium in MOXEU needs 28 percent more natural uranium than a reference UO 2 open cycle fleet generating the same energy if the reprocessed uranium is not recycled and 19 percent less if the reprocessed uranium ismore » recycled back in the reactors, i.e. a 47 percent difference.« less

Authors:
 [1]
  1. Idaho National Lab. (INL), Idaho Falls, ID (United States). Nuclear Systems Design and Analysis Division
Publication Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE)
OSTI Identifier:
1367871
Report Number(s):
INL/JOU-16-40546
Journal ID: ISSN 0029-5450
Grant/Contract Number:
AC07-05ID14517
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nuclear Technology
Additional Journal Information:
Journal Volume: 198; Journal Issue: 2; Journal ID: ISSN 0029-5450
Publisher:
American Nuclear Society (ANS)
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; Reprocessed Uranium; Transurancics in PWRS; Uranium management; Plutonium; TRU; Recycling; PWR

Citation Formats

Youinou, Gilles J. Impact of Reprocessed Uranium Management on the Homogeneous Recycling of Transuranics in PWRs. United States: N. p., 2017. Web. doi:10.1080/00295450.2017.1305191.
Youinou, Gilles J. Impact of Reprocessed Uranium Management on the Homogeneous Recycling of Transuranics in PWRs. United States. doi:10.1080/00295450.2017.1305191.
Youinou, Gilles J. Thu . "Impact of Reprocessed Uranium Management on the Homogeneous Recycling of Transuranics in PWRs". United States. doi:10.1080/00295450.2017.1305191. https://www.osti.gov/servlets/purl/1367871.
@article{osti_1367871,
title = {Impact of Reprocessed Uranium Management on the Homogeneous Recycling of Transuranics in PWRs},
author = {Youinou, Gilles J.},
abstractNote = {This article presents the results of a neutronics analysis related to the homogeneous recycling of transuranics (TRU) in PWRs with a MOX fuel using enriched uranium instead of depleted uranium. It also addresses an often, if not always, overlooked aspect related to the recycling of TRU in PWRs, namely the use of reprocessed uranium. From a neutronics point of view, it is possible to multi-recycle the entirety of the plutonium with or without neptunium and americium in a PWR fleet using MOX-EU fuel in between one third and two thirds of the fleet. Recycling neptunium and americium with plutonium significantly decreases the decay heat of the waste stream between 100 to 1,000 years compared to those of an open fuel cycle or when only plutonium is recycled. The uranium present in MOX-EU used fuel still contains a significant amount of 235uranium and recycling it makes a major difference on the natural uranium needs. For example, a PWR fleet recycling its plutonium, neptunium and americium in MOXEU needs 28 percent more natural uranium than a reference UO2 open cycle fleet generating the same energy if the reprocessed uranium is not recycled and 19 percent less if the reprocessed uranium is recycled back in the reactors, i.e. a 47 percent difference.},
doi = {10.1080/00295450.2017.1305191},
journal = {Nuclear Technology},
number = 2,
volume = 198,
place = {United States},
year = {Thu May 04 00:00:00 EDT 2017},
month = {Thu May 04 00:00:00 EDT 2017}
}

Journal Article:
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