Journal of Radiation Research and Radiation Processing, Volume. 42, Issue 3, 030601(2024)
Development and validation of a program for assessing the consequences of radioactivity releases from fusion reactor accidents
Figures & Tables(12)
Fig. 1. Schematic diagram of tritium and radioactive dust migration in the environment
Fig. 2. Schematic diagram of equivalent virtual point source modeling
Fig. 4. Comparison results for scenario 1: (a) near-ground air integral concentration; (b) ground deposition concentration;(c) inhalation dose; (d) ingestion dose (color online)
Fig. 5. Comparison results for scenario 2: (a) near-ground air integral concentration; (b) ground deposition concentration; (c) inhalation dose; (d) ingestion dose (color online)
Fig. 6. Comparison with HotSpot: (a) near-ground air integral concentration under D stability; (b) ground deposition concentration under D stability; (c) TEDE under D stability; (d) near-ground air integral concentration under F stability; (e) ground deposition concentration under F stability; (f) TEDE under F stability (color online)
Fig. 7. Calculated and experimental values of instantaneous air concentrations during HT release.
Fig. 8. TFWT concentrations (a) and OBT concentrations (b) in 4 representative foods over 7 days after the release (color online)
Fig. 9. Hourly inhalation and ingestion dose within 1 d after release (a) and its proportion of the total dose (b)
Table 1. Tritium production rates and tritium inventories in different reactors[19]
View tableView in ArticleTable 1. Tritium production rates and tritium inventories in different reactors[19]
压水堆 Pressurized water reactor 气冷堆 Gas cooled
reactor
熔盐堆 Molten
salt reactor
重水堆 Heavy
water reactor
ITER DEMO 产氚率 / (g·a-1)
Tritium production rate
~ 0.75 2 90 ~100 ~4 (110~170)×103 存量
Inventory
几克
Several grams
数十克
Tens of grams
数百克 Hundreds
of grams
数百克 Hundreds
of grams
数千克 Thousands of grams 数千克 Thousands of grams
Table 2. Main meteorological parameters at the time of the simulated accident
View tableView in ArticleTable 2. Main meteorological parameters at the time of the simulated accident
参数
Parameters
场景一
Scenario 1
场景二
Scenario 2
大气稳定度
Atmospheric stability
D F 60 m高度处的风速 / (m∙s-1)
Wind speed at 60 m
5 3 20 m高度处的风速 / (m∙s-1)
Wind speed at 20 m
3.442 1.850 10 m高度处的风速 / (m∙s-1)
Wind speed at 10 m
2.719 1.364 混合层高度 / m
Inversion layer height
560 200 空气温度 / ℃
Air temperature
10 10
Table 3. Program input parameters used for comparison with the HT release experiment
View tableView in ArticleTable 3. Program input parameters used for comparison with the HT release experiment
参数
Parameter
值
Value
释放持续时间 / min
Release duration
30 HT释放量 / Bq
HT release amount
3.54 × 1012 释放高度 / m
Release height
1.0 HT沉积速度 / (m∙s-1)
HT deposition velocity
7.8×10-4 (≤ 200 m)
4.3×10-4 (> 200 m)
评估高度 / m
Evaluation height
1.0 风速/(m∙s-1)
Wind speed
2.25 大气稳定度类型
Atmospheric stability
BC 湿沉积
Wet deposition
无
No
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Weijie CUI, Jinlong ZHANG, Zaixin LI, Bo CAO. Development and validation of a program for assessing the consequences of radioactivity releases from fusion reactor accidents[J]. Journal of Radiation Research and Radiation Processing, 2024, 42(3): 030601
Paper Information
Category: Research Articles
Received: Dec. 13, 2023
Accepted: Jan. 22, 2024
Published Online: Jul. 18, 2024
The Author Email: CUI Weijie (崔威杰)
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