Simulation of a nuclear major accident at the Tricastin NPP

Rank, NPP code, date	mSv
1 TRI_2018-05-20	27.35
2 TRI_2021-11-25	22.98
3 TRI_2017-01-03	21.72
4 TRI_2018-09-04	21.08
5 TRI_2018-06-26	20.46
6 TRI_2018-10-19	20.20
7 TRI_2020-11-05	13.14
8 TRI_2021-09-22	12.76
9 TRI_2021-09-23	11.88
10 TRI_2021-07-28	11.36
11 TRI_2020-05-27	11.13
12 TRI_2017-06-18	10.60
13 TRI_2021-03-28	9.78
14 TRI_2018-10-18	9.12
15 TRI_2017-03-11	8.78
16 TRI_2020-05-25	8.62
17 TRI_2020-01-05	8.30
18 TRI_2021-09-01	7.92
19 TRI_2018-11-19	7.90
20 TRI_2018-05-18	7.79
21 TRI_2020-09-09	7.65
22 TRI_2020-09-13	7.65
23 TRI_2017-03-15	7.01
24 TRI_2018-10-17	6.81
25 TRI_2020-03-17	6.53
26 TRI_2017-05-25	6.01
27 TRI_2021-11-16	5.88
28 TRI_2020-01-08	5.47
29 TRI_2017-10-31	5.44
30 TRI_2017-04-20	5.22
31 TRI_2018-11-04	5.07
32 TRI_2018-07-30	4.94
33 TRI_2018-09-11	4.91
34 TRI_2018-10-08	4.54
35 TRI_2020-05-07	4.46
36 TRI_2021-04-04	4.46
37 TRI_2018-10-20	4.45
38 TRI_2020-11-21	4.45
39 TRI_2018-06-19	4.33
40 TRI_2020-03-31	4.32
41 TRI_2018-07-12	4.05
42 TRI_2018-10-04	3.98
43 TRI_2017-02-17	3.72
44 TRI_2020-09-08	3.67
45 TRI_2021-11-23	3.65
46 TRI_2018-09-09	3.50
47 TRI_2018-04-27	3.20
48 TRI_2018-09-25	3.15
49 TRI_2021-09-03	2.97
50 TRI_2018-01-27	2.92
51 TRI_2021-12-16	2.63
52 TRI_2020-11-03	2.48
53 TRI_2020-04-21	2.43
54 TRI_2020-09-15	2.43
55 TRI_2021-12-21	2.39
56 TRI_2021-02-12	2.35
57 TRI_2021-02-28	2.32
58 TRI_2018-05-06	2.30
59 TRI_2018-12-13	2.24
60 TRI_2021-10-14	2.24
61 TRI_2018-09-08	2.16
62 TRI_2020-11-29	2.14
63 TRI_2017-07-20	2.12
64 TRI_2017-09-21	2.12
65 TRI_2021-10-22	2.12
66 TRI_2021-01-10	2.06
67 TRI_2021-05-28	2.01
68 TRI_2018-02-04	1.91
69 TRI_2018-09-03	1.85
70 TRI_2021-07-20	1.83
71 TRI_2017-05-16	1.81
72 TRI_2021-10-27	1.79
73 TRI_2018-05-13	1.77
74 TRI_2020-08-08	1.77
75 TRI_2021-01-09	1.73
76 TRI_2017-08-13	1.72
77 TRI_2017-01-22	1.59
78 TRI_2021-07-04	1.59
79 TRI_2020-05-12	1.58
80 TRI_2018-08-18	1.54
81 TRI_2020-03-24	1.54
82 TRI_2020-03-26	1.52
83 TRI_2020-01-19	1.48
84 TRI_2018-09-10	1.47
85 TRI_2021-11-11	1.47
86 TRI_2018-05-05	1.43
87 TRI_2021-06-15	1.40
88 TRI_2018-12-30	1.37
89 TRI_2021-11-14	1.35
90 TRI_2018-10-07	1.32
91 TRI_2017-04-21	1.23
92 TRI_2021-04-02	1.20
93 TRI_2021-05-30	1.20
94 TRI_2020-01-20	1.17
95 TRI_2021-08-31	1.17
96 TRI_2020-05-13	1.14
97 TRI_2017-07-21	1.12
98 TRI_2020-05-29	1.12
99 TRI_2020-04-19	1.07
100 TRI_2018-07-29	1.06
101 TRI_2018-02-28	1.04
102 TRI_2017-04-07	1.02
103 TRI_2021-03-05	1.02
104 TRI_2018-04-14	0.99
105 TRI_2021-11-10	0.98
106 TRI_2020-04-14	0.97
107 TRI_2021-11-09	0.97
108 TRI_2021-02-26	0.91
109 TRI_2018-08-10	0.90
110 TRI_2017-01-19	0.89
111 TRI_2018-12-25	0.89
112 TRI_2017-05-24	0.88
113 TRI_2017-07-03	0.85
114 TRI_2018-08-17	0.84
115 TRI_2018-08-21	0.80
116 TRI_2020-04-22	0.80
117 TRI_2021-04-22	0.80
118 TRI_2017-04-01	0.79
119 TRI_2018-08-05	0.75
120 TRI_2017-10-04	0.73
121 TRI_2021-04-20	0.72
122 TRI_2020-04-20	0.70
123 TRI_2021-12-17	0.70
124 TRI_2020-08-06	0.69
125 TRI_2017-01-23	0.65
126 TRI_2021-11-12	0.65
127 TRI_2018-05-19	0.64
128 TRI_2018-06-23	0.63
129 TRI_2020-03-27	0.62
130 TRI_2021-02-27	0.62
131 TRI_2021-08-10	0.62
132 TRI_2018-02-05	0.60
133 TRI_2017-03-12	0.58
134 TRI_2018-06-28	0.58
135 TRI_2021-04-14	0.53
136 TRI_2020-05-05	0.52
137 TRI_2017-12-23	0.51
138 TRI_2021-10-25	0.48
139 TRI_2018-04-05	0.45
140 TRI_2017-08-21	0.42
141 TRI_2020-04-24	0.42
142 TRI_2020-05-16	0.42
143 TRI_2020-03-23	0.41
144 TRI_2020-05-26	0.41
145 TRI_2020-08-15	0.41
146 TRI_2017-09-26	0.39
147 TRI_2018-02-27	0.39
148 TRI_2017-11-05	0.36
149 TRI_2018-05-01	0.36
150 TRI_2017-06-08	0.34
151 TRI_2017-06-17	0.31
152 TRI_2020-04-12	0.31
153 TRI_2017-10-25	0.30
154 TRI_2018-06-25	0.30
155 TRI_2021-08-11	0.28
156 TRI_2018-04-17	0.27
157 TRI_2020-09-07	0.26
158 TRI_2018-08-04	0.25
159 TRI_2020-07-08	0.24
160 TRI_2021-03-06	0.24
161 TRI_2017-08-06	0.23
162 TRI_2021-11-13	0.23
163 TRI_2017-07-16	0.21
164 TRI_2020-07-29	0.20
165 TRI_2017-06-10	0.19
166 TRI_2020-03-30	0.19
167 TRI_2020-05-11	0.18
168 TRI_2021-07-03	0.18
169 TRI_2021-11-22	0.17
170 TRI_2017-06-13	0.12
171 TRI_2018-10-16	0.09
172 TRI_2020-04-13	0.07
173 TRI_2018-05-10	0.05
174 TRI_2017-01-01	0.00
175 TRI_2017-01-02	0.00
176 TRI_2017-01-04	0.00
177 TRI_2017-01-05	0.00

Rank, NPP code, date

mSv

1 TRI_2018-05-20

27.35

22.98

21.72

21.08

20.46

20.20

13.14

12.76

11.88

11.36

11.13

10.60

9.78

9.12

8.78

8.62

8.30

7.92

7.90

7.79

7.65

7.65

7.01

6.81

6.53

6.01

5.88

5.47

5.44

5.22

5.07

4.94

4.91

4.54

4.46

4.46

4.45

4.45

4.33

4.32

4.05

3.98

3.72

3.67

3.65

3.50

3.20

3.15

2.97

2.92

2.63

2.48

2.43

2.43

2.39

2.35

2.32

2.30

2.24

2.24

2.16

2.14

2.12

2.12

2.12

2.06

2.01

1.91

1.85

1.83

1.81

1.79

1.77

1.77

1.73

1.72

1.59

1.59

1.58

1.54

1.54

1.52

1.48

1.47

1.47

1.43

1.40

1.37

1.35

1.32

1.23

1.20

1.20

1.17

1.17

1.14

1.12

1.12

1.07

1.06

1.04

1.02

1.02

0.99

0.98

0.97

0.97

0.91

0.90

0.89

0.89

0.88

0.85

0.84

0.80

0.80

0.80

0.79

0.75

0.73

0.72

0.70

0.70

0.69

0.65

0.65

0.64

0.63

0.62

0.62

0.62

0.60

0.58

0.58

0.53

0.52

0.51

0.48

0.45

0.42

0.42

0.42

0.41

0.41

0.41

0.39

0.39

0.36

0.36

0.34

0.31

0.31

0.30

0.30

0.28

0.27

0.26

0.25

0.24

0.24

0.23

0.23

0.21

0.20

0.19

0.19

0.18

0.18

0.17

0.12

0.09

0.07

0.05

0.00

0.00

0.00

0.00

ADDITIONAL EXPLANATION ON THE TABLE

1° The radioactivity comes from the passage of the cloud in the hours following an accident;
2° The above individual doses do not include soil irradiation or ingestion of contaminated food after the passage of the cloud;
3° These figures are estimates;
4° SEE COMMENTARY ON LOW AND HIGH DOSES.
5° The calculations are not derived using the map in the illustration, but from another map – of the same format as the one for download on our website to study deposition – which explains some discrepancies between the figure and its illustration.
6° The analysis of the 11 situations producing the maximum fallout allows us to establish the highest risk for a given city, i.e., the consequences of weather situations occurring in 1% of the cases.
7° The above data allow for the identification of the meteorological conditions that would have the worst impact on the area in question, as well as those that would keep radioactivity away. In the event of a major accident at the nuclear power plant concerned, a quick comparison of this analysis with the then prevailing meteorological conditions could be very useful to act as decentralized as possible; local authorities could keep these analyses as ready references to better and more rapidly deploy population protection strategies.

Major accident in one of the four reactors of Tricastin NPP (4 × 2785 MWth)

Possible impact on the inhabitants of :

Girona (305 km) ESP

See the potential impact on the following geographical areas: Europe (51 countries) Spain France Italy Switzerland

ADDITIONAL EXPLANATION ON THE TABLE

Photo cropped from the work of Marianne Casamance, CC BY-SA 4.0, via Wikimedia Commons

Tricastin, France, pressurized water reactor (PWR), 4 × 2785 megawatts thermal (MWth)