An improved design of TRISO particle with porous SiC inner layer by fluidized bed-chemical vapor deposition

Liu, Rongzheng; Liu, Malin; Chang, Jiaxing; Shao, Youlin; Liu, Bing

doi:10.1016/j.jnucmat.2015.10.055

Cited by 33 publications

(15 citation statements)

References 21 publications

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“…There is a significant retention of the fission products in the kernel itself. The fuel kernel and the SiC coating are the major barriers for fission products release from the fuel particle [6,[13][14]16] . The graphitic materials do not retain fission gases and iodine, but operation experience indicates that fission metals like strontium and cesium are strongly retained in these materials.…”

Section: Resultsmentioning

confidence: 99%

“…Fuel Kernel [13] ▪ Contains fissile and fertile material ▪ Retains fission products 2. Buffer layer (Porous Carbon layer) ▪ Void volume for fission gases ▪ Accommodates Kernel swelling ▪ Attenuates fission recoils The following five barriers to fission product radionuclides release are reviewed:…”

Section: Theorymentioning

confidence: 99%

“…TRISO fuel particle configuration [1,7] From Fig 1, four coating layers of TRISO particle act as pressure vessel with high integrity that is very strong against fission products. The main purpose of the high density IPyC coating, on which SiC coating is deposited, is to have high integrity and prevent chlorine (Cl2) and hydrogen chloride (HCl) againts being absorbed by fuel kernels during the deposition process of SiC [2][3][4]7,9,13] . Therefore, IPyC plays an important role during the fabrication.…”

Section: Theorymentioning

confidence: 99%

“…As upholstery, high density OPyC shrinks during irradiation time, which also produces compressive stress in SiC dimension, and is partly compensating for the components of the tensile stress caused by the internal gas pressure. OPyC coatings are also effective in maintaining the fission gas in the fuel particles in case of SiC fabrication defect that fails to work up to about 1800 °C [2][3][4]7,[12][13][14] .…”

Section: Theorymentioning

confidence: 99%

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Estimation of Routine Discharge of Radionuclides on Power Reactor Experimental Rde

Udiyani

Kuntjoro

2017

urania

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ESTIMATION OF ROUTINE DISCHARGE OF RADIONUCLIDES ON POWER REACTOR EXPERIMENTAL RDE.Experimental power reactor (RDE), which is planned to be constructed by BATAN, is a kind of High Temperature Gas Cooled Reactor (HTGR) with 10 MWth power. HTGR is a helium gas-cooled reactor with TRISO-coated fuel that is able to confine fission products to be remained in the core. To ensure the safety for workers and public surroundings of the RDE site and to meet the regulatory body requirements for construction and operation, research is needed for environmental radiation in normal and abnormal condition. This study is focused on normal operating condition, while for the accident condition study will be carried out after the final design has been completed. Estimation of radiology in the environment involves the source term released into the environment under routine operation condition. The purpose of this study is to estimate the source terms released into the environment based on postulation of normal or routine operation of the RDE-10 MWth. The research approach starts with an assumption that there are defects and impurities in the TRISO fuel because of limitations during the fabrication. Mechanisms of fission products release from the fuel to the environment were created based on the safety features design of RDE. Radionuclides inventories in the reactor were calculated by the use of ORIGEN-2 whose library has been modified for HTGR type, while assumptions on TRISO fuel defects and release fraction for each compartment of the RDE safety systems are defined by a reference parameter. The results show that the important source terms of RDE are group of noble gases (Kr and Xe), halogen (I), Sr, Cs, H-3, and Ag. Activities of RDE source terms for routine operations have no significant difference with the HTR-10 source terms with the same power.Keywords: Routine discharge, radionuclide, source terms, RDE, HTGR.

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Section: Resultsmentioning

confidence: 99%

Section: Theorymentioning

confidence: 99%

Section: Theorymentioning

confidence: 99%

Section: Theorymentioning

confidence: 99%

See 2 more Smart Citations

Estimation of Routine Discharge of Radionuclides on Power Reactor Experimental Rde

Udiyani

Kuntjoro

2017

urania

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“…To fulfill the commercial development of HTGR, higher requirements for mass production of over-coated particles for fuel elements were investigated. The standardized experiment proved that the average stable yield is 93.94% and hence the over-coating equipment is easily operated and controlled, and satisfied the mass production [31]. Tristructural-isotropic (TRISO) particle has been successful in HTGR, but for future development, an improved design is required by preparing porous SiC layer called methods of high methyl tri-chlorosilane (MTS) concentration, high Ar concentration and hexa-methyl disilane (HMDS) investigated from scanning electron microscope (SEM), X-ray diffraction (XRD), Raman scattering and energy dispersive X-ray (EDX) analysis [32].…”

Section: The Institute Of Nuclear and New Energy Technology (Inet) Anmentioning

confidence: 85%

The Strategy to Support HTGR fuels for The 10 MW Indonesia's Experimental Power Reactor (RDE)

Taryo

Ridwan²,

Sunaryo³

et al. 2018

urania

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STRATEGY TO SUPPORT HTGR FUEL FOR THE 10 MW INDONESIA'S EXPERIMENTAL POWER REACTOR (RDE). The Indonesia's 10 MW experimental power reactor (RDE) is developed based on high temperature gas-cooled reactor (HTGR) and the program of the RDE was firstly introduced to the Agency for National Development Planning (BAPPENAS) at the beginning of 2014. The RDE program is expected to have positive impacts on community prosperity, self-reliance and sovereignty of Indonesia. The availability of RDE will be able to accelerate advanced nuclear power technology development and hence elevate Indonesia to be the nuclear champion in the ASEAN region. The RDE is expected to be operable in 2022/2023. In terms of fuel supply for the reactor, the first batch of RDE fuel will be inclusive in the RDE engineering, procurement and construction (RDE-EPC) contract for the assurance of the RDE reactor operation from 2023 to 2027. Consideration of RDE fuel plant construction is important as RDE can be the basis for the development of reactors of similar type with small-medium power (25 MWe-200/300 MWe), which are preferable for eastern part of Indonesia. To study the feasibility of the construction of RDE fuel plant, current state of the art of the R&D on HTGR fuel in some advanced countries such as European countries, the United States, South Africa and Japan will be discussed and overviewed to draw a conclusion about the prospective countries for supporting the fuel for long-term RDE operation. The strategy and roadmap for the preparation of the RDE fuel plant construction with the involvement of national stakeholders have been developed. The best possible vendor country to support HTGR fuel for long-term operation is finally accomplished. In the end, this paper can be assigned as a reference for the planning and construction of HTGR RDE fuel fabrication plant in Indonesia.Keywords: RDE, Indonesia, HTGR, fuel, strategy.

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Review of oxidant resistant coating on graphite substrate of HTR fuel element

Yang

Zhao

et al. 2019

J. Cent. South Univ.

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An improved design of TRISO particle with porous SiC inner layer by fluidized bed-chemical vapor deposition

Cited by 33 publications

References 21 publications

Estimation of Routine Discharge of Radionuclides on Power Reactor Experimental Rde

Estimation of Routine Discharge of Radionuclides on Power Reactor Experimental Rde

The Strategy to Support HTGR fuels for The 10 MW Indonesia's Experimental Power Reactor (RDE)

Review of oxidant resistant coating on graphite substrate of HTR fuel element

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