Simulation of a nuclear major accident at the Tricastin NPP

Rank, NPP code, date	mSv
1 TRI_2020-08-11	28.02
2 TRI_2017-01-28	26.96
3 TRI_2020-01-24	24.60
4 TRI_2021-03-01	24.42
5 TRI_2020-11-26	18.97
6 TRI_2018-11-17	15.41
7 TRI_2021-09-07	12.13
8 TRI_2020-11-12	11.98
9 TRI_2020-05-31	11.94
10 TRI_2018-05-27	11.85
11 TRI_2020-11-27	11.85
12 TRI_2021-09-02	11.62
13 TRI_2018-04-08	9.93
14 TRI_2020-06-12	9.18
15 TRI_2021-04-24	7.60
16 TRI_2020-04-08	7.56
17 TRI_2020-02-06	7.46
18 TRI_2021-12-22	7.05
19 TRI_2017-05-26	6.79
20 TRI_2017-03-04	6.77
21 TRI_2018-10-31	6.73
22 TRI_2021-10-28	6.44
23 TRI_2017-05-10	6.28
24 TRI_2017-05-31	6.25
25 TRI_2020-06-24	6.21
26 TRI_2020-11-23	5.92
27 TRI_2017-07-17	5.79
28 TRI_2020-11-06	5.66
29 TRI_2018-09-25	5.51
30 TRI_2021-04-25	5.50
31 TRI_2018-11-06	5.48
32 TRI_2017-06-01	5.42
33 TRI_2018-11-21	5.41
34 TRI_2021-09-03	5.31
35 TRI_2018-10-15	5.27
36 TRI_2021-10-27	5.23
37 TRI_2018-06-03	5.05
38 TRI_2017-02-12	4.99
39 TRI_2018-06-30	4.87
40 TRI_2021-04-21	4.80
41 TRI_2018-01-14	4.77
42 TRI_2017-02-14	4.76
43 TRI_2018-11-23	4.76
44 TRI_2018-05-25	4.47
45 TRI_2021-03-29	4.26
46 TRI_2021-09-24	4.14
47 TRI_2017-11-03	4.13
48 TRI_2017-03-30	4.02
49 TRI_2018-12-18	3.97
50 TRI_2020-04-15	3.93
51 TRI_2020-09-20	3.92
52 TRI_2018-11-13	3.90
53 TRI_2020-09-17	3.78
54 TRI_2020-08-10	3.73
55 TRI_2020-05-04	3.64
56 TRI_2021-12-24	3.62
57 TRI_2018-07-01	3.60
58 TRI_2021-09-06	3.59
59 TRI_2020-01-25	3.43
60 TRI_2018-12-26	3.19
61 TRI_2017-07-04	3.14
62 TRI_2020-12-16	3.09
63 TRI_2021-02-04	3.03
64 TRI_2017-04-29	2.93
65 TRI_2021-10-18	2.80
66 TRI_2020-04-04	2.75
67 TRI_2017-05-09	2.72
68 TRI_2018-05-30	2.71
69 TRI_2017-07-31	2.70
70 TRI_2021-12-17	2.69
71 TRI_2021-02-05	2.60
72 TRI_2020-03-15	2.43
73 TRI_2018-08-28	2.41
74 TRI_2017-05-05	2.40
75 TRI_2020-09-13	2.30
76 TRI_2018-01-13	2.28
77 TRI_2020-06-01	2.26
78 TRI_2018-11-05	2.20
79 TRI_2021-10-30	2.08
80 TRI_2020-05-11	2.05
81 TRI_2020-04-07	2.04
82 TRI_2020-10-19	2.04
83 TRI_2021-09-05	2.01
84 TRI_2018-06-02	1.98
85 TRI_2020-03-18	1.95
86 TRI_2020-05-07	1.87
87 TRI_2020-06-23	1.87
88 TRI_2018-06-09	1.86
89 TRI_2018-04-18	1.85
90 TRI_2021-03-31	1.82
91 TRI_2017-10-13	1.79
92 TRI_2021-01-19	1.74
93 TRI_2017-09-28	1.72
94 TRI_2017-02-13	1.69
95 TRI_2018-05-24	1.64
96 TRI_2018-11-22	1.64
97 TRI_2020-03-21	1.64
98 TRI_2020-03-24	1.64
99 TRI_2018-01-24	1.63
100 TRI_2021-07-22	1.63
101 TRI_2020-02-15	1.59
102 TRI_2018-11-08	1.52
103 TRI_2017-01-25	1.50
104 TRI_2018-11-14	1.49
105 TRI_2018-03-24	1.48
106 TRI_2018-04-12	1.44
107 TRI_2018-06-29	1.43
108 TRI_2018-04-09	1.42
109 TRI_2021-05-31	1.42
110 TRI_2017-06-08	1.39
111 TRI_2020-07-30	1.38
112 TRI_2020-01-13	1.37
113 TRI_2020-06-11	1.37
114 TRI_2017-07-07	1.34
115 TRI_2021-06-27	1.31
116 TRI_2021-04-29	1.28
117 TRI_2018-12-13	1.25
118 TRI_2021-12-21	1.22
119 TRI_2018-04-06	1.20
120 TRI_2021-07-23	1.20
121 TRI_2018-04-27	1.19
122 TRI_2018-09-28	1.18
123 TRI_2018-03-01	1.17
124 TRI_2018-06-07	1.17
125 TRI_2020-09-08	1.16
126 TRI_2021-10-17	1.14
127 TRI_2017-02-15	1.13
128 TRI_2017-05-04	1.11
129 TRI_2018-05-26	1.10
130 TRI_2018-10-04	1.10
131 TRI_2021-05-30	1.09
132 TRI_2020-05-13	1.08
133 TRI_2020-08-07	1.07
134 TRI_2020-01-12	1.03
135 TRI_2020-04-10	1.03
136 TRI_2021-09-23	1.03
137 TRI_2020-11-24	1.02
138 TRI_2017-03-26	1.00
139 TRI_2020-12-07	1.00
140 TRI_2020-01-23	0.99
141 TRI_2017-05-30	0.97
142 TRI_2018-11-15	0.95
143 TRI_2020-04-11	0.95
144 TRI_2020-03-19	0.94
145 TRI_2020-03-20	0.94
146 TRI_2018-10-06	0.93
147 TRI_2017-11-01	0.91
148 TRI_2017-10-31	0.90
149 TRI_2018-11-03	0.87
150 TRI_2020-04-14	0.87
151 TRI_2021-03-28	0.85
152 TRI_2018-01-08	0.81
153 TRI_2020-09-15	0.81
154 TRI_2017-11-02	0.79
155 TRI_2018-04-28	0.76
156 TRI_2020-07-29	0.76
157 TRI_2017-07-05	0.75
158 TRI_2017-03-15	0.74
159 TRI_2020-09-14	0.73
160 TRI_2017-07-03	0.72
161 TRI_2020-04-13	0.70
162 TRI_2017-03-22	0.69
163 TRI_2021-04-23	0.69
164 TRI_2018-11-25	0.66
165 TRI_2021-02-22	0.66
166 TRI_2017-07-08	0.63
167 TRI_2018-04-19	0.62
168 TRI_2018-04-20	0.57
169 TRI_2020-04-25	0.57
170 TRI_2020-04-06	0.56
171 TRI_2018-02-27	0.53
172 TRI_2018-02-28	0.51
173 TRI_2018-04-05	0.44
174 TRI_2017-06-20	0.43
175 TRI_2017-03-02	0.41
176 TRI_2018-11-04	0.41
177 TRI_2017-08-28	0.38
178 TRI_2017-06-18	0.36
179 TRI_2018-03-14	0.36
180 TRI_2021-02-09	0.36
181 TRI_2021-04-08	0.36
182 TRI_2020-01-08	0.33
183 TRI_2018-08-05	0.29
184 TRI_2021-05-07	0.26
185 TRI_2018-09-16	0.24
186 TRI_2020-09-04	0.23
187 TRI_2021-06-15	0.23
188 TRI_2021-10-24	0.23
189 TRI_2020-02-14	0.22
190 TRI_2017-08-23	0.21
191 TRI_2018-01-05	0.21
192 TRI_2020-03-23	0.20
193 TRI_2020-12-17	0.18
194 TRI_2018-01-10	0.15
195 TRI_2017-05-03	0.14
196 TRI_2017-08-22	0.13
197 TRI_2021-08-31	0.12
198 TRI_2020-05-12	0.11
199 TRI_2017-08-26	0.10
200 TRI_2018-01-23	0.10
201 TRI_2018-11-20	0.10
202 TRI_2020-01-16	0.09
203 TRI_2020-05-10	0.07
204 TRI_2020-08-09	0.06
205 TRI_2017-01-01	0.00
206 TRI_2017-01-02	0.00
207 TRI_2017-01-03	0.00
208 TRI_2017-01-04	0.00

Rank, NPP code, date

mSv

1 TRI_2020-08-11

28.02

26.96

24.60

24.42

18.97

15.41

12.13

11.98

11.94

11.85

11.85

11.62

9.93

9.18

7.60

7.56

7.46

7.05

6.79

6.77

6.73

6.44

6.28

6.25

6.21

5.92

5.79

5.66

5.51

5.50

5.48

5.42

5.41

5.31

5.27

5.23

5.05

4.99

4.87

4.80

4.77

4.76

4.76

4.47

4.26

4.14

4.13

4.02

3.97

3.93

3.92

3.90

3.78

3.73

3.64

3.62

3.60

3.59

3.43

3.19

3.14

3.09

3.03

2.93

2.80

2.75

2.72

2.71

2.70

2.69

2.60

2.43

2.41

2.40

2.30

2.28

2.26

2.20

2.08

2.05

2.04

2.04

2.01

1.98

1.95

1.87

1.87

1.86

1.85

1.82

1.79

1.74

1.72

1.69

1.64

1.64

1.64

1.64

1.63

1.63

1.59

1.52

1.50

1.49

1.48

1.44

1.43

1.42

1.42

1.39

1.38

1.37

1.37

1.34

1.31

1.28

1.25

1.22

1.20

1.20

1.19

1.18

1.17

1.17

1.16

1.14

1.13

1.11

1.10

1.10

1.09

1.08

1.07

1.03

1.03

1.03

1.02

1.00

1.00

0.99

0.97

0.95

0.95

0.94

0.94

0.93

0.91

0.90

0.87

0.87

0.85

0.81

0.81

0.79

0.76

0.76

0.75

0.74

0.73

0.72

0.70

0.69

0.69

0.66

0.66

0.63

0.62

0.57

0.57

0.56

0.53

0.51

0.44

0.43

0.41

0.41

0.38

0.36

0.36

0.36

0.36

0.33

0.29

0.26

0.24

0.23

0.23

0.23

0.22

0.21

0.21

0.20

0.18

0.15

0.14

0.13

0.12

0.11

0.10

0.10

0.10

0.09

0.07

0.06

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 :

Moulins (271 km) FRA

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)