Radiation characteristics of REMIX-fuel multirecycling in VVER-1000 reactor

Postovarova, Dar’ya Vladimirovna; Kovalyov, Nikita Vladimirivich; Onegin, Mihail Sergeevich; Bibichev, B. A.

doi:10.26583/npe.2016.1.11

Cited by 3 publications

(1 citation statement)

References 4 publications

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“…Since 2005, the V.G. Khlopin Radium Institute in collaboration with the Kurchatov Institute has been developing REMIX fuel (REMIX -REegenerated MIXture of U-Pu oxides), which involves recycling both reprocessed uranium and plutonium to load the entire core of existing VVER-1000/1200 reactors (Fedorov et al 2001, Pavlovichev et al 2006, Pavlovichev et al 2008, Zilberman et al 2012, Dekusar et al 2013, Postovarova et al 2016.…”

Section: Simulating Nuclear Fuel Cyclesmentioning

confidence: 99%

A new approach to the recycling of spent nuclear fuel in thermal reactors within the REMIX concept

Kovalev¹,

Zilberman²,

Goletsky³

et al. 2020

NUCET

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A review of simulated nuclear fuel cycles with mixed uranium-plutonium fuel (REMIX) was carried out. The concept of REMIX fuel is one of the options for closing the nuclear fuel cycle (NFC), which makes it possible to recycle uranium and plutonium in VVER-1000/1200 thermal reactors at a 100% core loading. The authors propose a new approach to the recycling of spent nuclear fuel (SNF) in thermal reactors. The approach implies a simplified fabrication of mixed fuel when plutonium is used in high concentration together with enriched natural uranium, while reprocessed uranium is supposed to be enriched and used separately. The share of standard enriched natural uranium fuel in this nuclear fuel cycle is more than 50%, the share of mixed natU+Pu fuel is 25%, the rest is fuel obtained from enriched reprocessed uranium. It is emphasized that the new approach has the maximum economic prospect and makes it possible to organize the fabrication of this fuel and nuclear material cross-cycling at the facilities available in the Russian Federation in the short term. This NFC option eliminates the accumulation of SNF in the form of spent fuel assemblies (SFA). SNF is always reprocessed with the aim of further using the primary reprocessed uranium and plutonium. Non-recyclable in thermal reactors, burnt, reprocessed uranium, the energy potential of which is comparable to natural uranium, as well as secondary plutonium intended for further use in fast reactors, are sent as reprocessing by-products to the storage area.

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Section: Simulating Nuclear Fuel Cyclesmentioning

confidence: 99%

A new approach to the recycling of spent nuclear fuel in thermal reactors within the REMIX concept

Kovalev¹,

Zilberman²,

Goletsky³

et al. 2020

NUCET

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show abstract

How can the cost of spent fuel reprocessing be reduced and reliable isolation of all the wastes be ensured?

Pokhitonov

2017

Radiochemistry

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Preliminary analysis of the possibility of using REMIX fuel in VVER-1200 reactors of the Belarusian NPP

Kazazyan

Malykhin

Vaitsetskaya

et al. 2022

Vescì Akademìì navuk Belarusì. Seryâ fizika-tehničnyh navuk

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The transition from conventional uranium to regenerated fuel, which uses reprocessed spent fuel and enriched natural uranium, improves fuel efficiency and reduces the amount of spent nuclear fuel (SNF). Based on the analysis of published materials concerning mainly the fuel cycles of the VVER-1000 reactor, it was concluded that the most suitable in the conditions of the Republic of Belarus is the use of REMIX fuel. To confirm this conclusion in relation to the VVER-1200 reactors of the Belarusian NPP, computational studies were carried out within the framework of the State program “Scienceintensive technologies and equipment” for 2021–2025, subprogram 3 “Scientific support for the effective and safe operation of the Belarusian nuclear power plant and promising directions for the development of nuclear energy”. The characteristics of a 12-month fuel cycle with multiple recycling (reuse of fuel) according to the REMIX technology with 19.75 % enrichment of added uranium and maintaining the design capacity and duration of the campaign have been obtained. The share of SNF that is not returned to the reactor is 12.8 % (for a cycle with uranium fuel – 100 %); the fraction of waste intended for disposal or long-term storage, respectively, decreases by 8 times, and the specific consumption of natural uranium is reduced from 202 g/(MW·day) for uranium fuel to 159 g/(MW·day) for REMIX fuel. The results obtained can be taken into account when developing a fuel use strategy at the Belarusian NPP.

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Radiation characteristics of REMIX-fuel multirecycling in VVER-1000 reactor

Cited by 3 publications

References 4 publications

A new approach to the recycling of spent nuclear fuel in thermal reactors within the REMIX concept

A new approach to the recycling of spent nuclear fuel in thermal reactors within the REMIX concept

How can the cost of spent fuel reprocessing be reduced and reliable isolation of all the wastes be ensured?

Preliminary analysis of the possibility of using REMIX fuel in VVER-1200 reactors of the Belarusian NPP

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