Transmutation properties of coated axially non-uniform MA/<sup>6</sup>LiD transmutation rods in PWR

Bin YE; Xiaodan FEI; Yanling JI; Sijia XIONG; Bo LI; Xiaohu WANG

doi:10.11889/j.0253-3219.2023.hjs.46.020604

NUCLEAR TECHNIQUES, Volume. 46, Issue 2, 020604(2023)

Transmutation properties of coated axially non-uniform MA/⁶LiD transmutation rods in PWR

Bin YE^1、*, Xiaodan FEI¹, Yanling JI¹, Sijia XIONG¹, Bo LI¹, and Xiaohu WANG²

¹School of National Defense Science and Technology, Southwest University of Science and Technology, Mianyang 621010, China

²Center for Advanced Material Diagnostic Technology, Shenzhen Technology University, Shenzhen 518118, China

show less

Abstract Get PDF(in Chinese)

Figures & Tables(15)

Fig. 1. Nuclear reaction chain of thermal neutron in ⁶LiD

Download full size

View in Article

Fig. 2. Schematic diagram of transmutation rods (a) Radial structure of transmutation rod, (b) Axial uniform transmutation rod, (c) Axial three-segment transmutation rod, (d) Axial five-segment transmutation rod, (e) Axial seven-segment transmutation rod

Download full size

View in Article

Fig. 3. Position distribution of transmutation rods in fuel assembly (color online)

Download full size

View in Article

Fig. 4. Effect on k_eff under different ⁶LiD/MA ratio in transmutation clading material

Download full size

View in Article

Fig. 5. The effect on neutron spectrum while transmutation mass ratio of⁶LiD to MA is 2∶8 and thickness is 2 mm

Download full size

View in Article

Fig. 6. Effect on transmutation rate of mass ratio of ⁶LiD to MA in transmutation material

Download full size

View in Article

Fig. 7. Variation of MA transmutation rate within 540 d with different axial structure of transmutation rods

Download full size

View in Article

Fig. 8. Axial neutron flux distribution in core when axial structure of transmutation rods is different

Download full size

View in Article

Table 1. Parameters of PWR core

View table

View in Article

Table 1. Parameters of PWR core

堆芯参数 Core parameter	设计值 Data used in simulation
堆芯活性段Active core height / mm	3 657.6
堆芯等效直径 Equivalent diameter / mm	3 228
燃料富集度/组件数UO₂ Enrichment and assemblies number	177 (2.4%/61+3.1%/68+4.4%/48)
燃料密度Density of UO₂ / g·cm^-3	10.41
燃料棒排列方式 Fuel assembly pattern	17×17
包壳材料Cladding material	Zr合金 Zircaloy
包壳厚度Cladding thickness / mm	0.57
包壳外径Cladding out radius / mm	9.5
燃料棒间距 Space between fuel rods / mm	13
UO₂芯块直径 UO₂ fuel diameter / mm	8.192

Table 2. Composition and molar fraction of MA
View table
View in Article
Table 2. Composition and molar fraction of MA
核素Isotopes ²³⁷Np ²⁴¹Am ²⁴³Am ²⁴⁴Cm
比例Nuclide ratio / % 56.2 26.4 12 5.4

Table 3. Capture-to-fission ratio for main nuclides of core fuel
View table
View in Article
Table 3. Capture-to-fission ratio for main nuclides of core fuel
核素Isotopes 热谱Thermal 快谱Fast
²³⁷Np 63 5.3
²⁴¹Am 100 7.4
²⁴³Am 111 8.6
²⁴⁴Cm 16 1.4

Table 4. Parameters of MA transmutation rod

View table

View in Article

Table 4. Parameters of MA transmutation rod

参数Parameters	设计值 Data used in simulation
包壳材料Cladding material	锆合金 Zircaloy
包壳厚度Cladding thickness / mm	0.57
包壳外径Cladding out radius / mm	9.5
轴向均匀嬗变棒MA涂层厚度MA coating thickness of axial-uniform transmutation rods / mm	2
轴向三段式嬗变棒MA涂层厚度MA coating thickness of axial-three-segment transmutation rods / mm	2, 3, 2
轴向五段式嬗变棒MA涂层厚度MA coating thickness of axial-five-segment transmutation rods / mm	1, 2, 3, 2, 1
轴向七段式嬗变棒MA涂层厚度MA coating thickness of axial-seven-segment transmutation rods / mm	0.5, 1, 2, 3, 2, 1, 0.5
嬗变棒高度Heigh of transmutation rods / mm	3 657.6

Table 5. Transmutation condition based on different transmutation coating thickness after 540-day-explosure (⁶LiD∶MA=2∶8)

View table

View in Article

Table 5. Transmutation condition based on different transmutation coating thickness after 540-day-explosure (⁶LiD∶MA=2∶8)

核素Isotopes	涂层厚度Clading thickness / mm
核素Isotopes	0.1	0.5	1.0	1.5	2.0
²³⁷Np嬗变率²³⁷Np Transmutation rate / %	25.82	21.83	21.04	20.59	20.38
²⁴¹Am嬗变率²⁴¹Am Transmutation rate / %	60.16	45.98	42.22	40.09	38.99
²⁴³Am嬗变率²⁴³Am Transmutation rate / %	25.96	21.86	21.80	21.80	21.94
²⁴⁴Cm嬗变率²⁴⁴Cm Transmutation rate / %	-45.33	-36.56	-34.54	-33.55	-33.02
MA嬗变率MA transmutation rate / %	31.22	25.56	24.31	23.59	23.25
MA裂变率MA fission rate / %	3.67	3.83	3.88	3.92	3.94
MA嬗变量MA transmutation amount / kg	46.3	180.3	320.7	434.5	528.1

Table 6. Transmutation rate, fission rate and transmutation amount after 540-d-explosure

View table

View in Article

Table 6. Transmutation rate, fission rate and transmutation amount after 540-d-explosure

嬗变棒设计方案 Transmutation rods design scheme	单根嬗变棒中 MA的质量 MA mass of one transmutation rod / kg	MA总装载质量 MA mass loaded in total / kg	MA总嬗变率 MA transmutation rate in total / %	MA总嬗变量 MA transmutation mass in total / %	MA总裂变率 MA fission rate in total / %	等效MA年产量•每堆（PWR） Equivalence to the annual MA yield of a PWR
轴向均匀嬗变棒 Axial uniform transmutation rods	1.724	2 648.67	23.25	548.26	3.94	21.79
轴向三段式嬗变棒 Axial three-segment transmutation rods	1.489	2 287.27	24.05	491.76	4.48	19.54
轴向五段式嬗变棒 Axial five-segment transmutation rods	1.046	1 607.21	24.44	351.84	4.46	13.98
轴向七段式嬗变棒 Axial seven-segment transmutation rods	0.856	1 314.15	25.43	300.81	4.43	11.95

Table 7. Axial power peak factor

View table

View in Article

Table 7. Axial power peak factor

嬗变棒结构Transmutation rod structure	轴向功率峰因子Axial power peak factor
干净堆芯Clean core	1.778
轴向均匀嬗变棒Axial-uniform transmutation rods	1.737
轴向三段式嬗变棒Axial-three-segment transmutation rods	1.375
轴向五段式嬗变棒Axial-five-segment transmutation rods	1.408
轴向七段式嬗变棒Axial-seven-segment transmutation rods	1.546

Tools

Get Citation

Copy Citation Text

Bin YE, Xiaodan FEI, Yanling JI, Sijia XIONG, Bo LI, Xiaohu WANG. Transmutation properties of coated axially non-uniform MA/⁶LiD transmutation rods in PWR[J]. NUCLEAR TECHNIQUES, 2023, 46(2): 020604

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites

Paper Information

Category: Research Articles

Received: Jul. 8, 2022

Accepted: --

Published Online: Mar. 2, 2023

The Author Email: YE Bin (84370227@qq.com)

DOI:10.11889/j.0253-3219.2023.hjs.46.020604

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Parameters of PWR core

Table 1. Parameters of PWR core

Table 2. Composition and molar fraction of MA

Table 2. Composition and molar fraction of MA

Table 3. Capture-to-fission ratio for main nuclides of core fuel

Table 3. Capture-to-fission ratio for main nuclides of core fuel

Table 4. Parameters of MA transmutation rod

Table 4. Parameters of MA transmutation rod

Table 5. Transmutation condition based on different transmutation coating thickness after 540-day-explosure (6LiD∶MA=2∶8)

Table 5. Transmutation condition based on different transmutation coating thickness after 540-day-explosure (6LiD∶MA=2∶8)

Table 6. Transmutation rate, fission rate and transmutation amount after 540-d-explosure

Table 6. Transmutation rate, fission rate and transmutation amount after 540-d-explosure

Table 7. Axial power peak factor

Table 7. Axial power peak factor

Table 5. Transmutation condition based on different transmutation coating thickness after 540-day-explosure (⁶LiD∶MA=2∶8)

Table 5. Transmutation condition based on different transmutation coating thickness after 540-day-explosure (⁶LiD∶MA=2∶8)