Simulation of a nuclear major accident at the Tricastin NPP

Rank, NPP code, date	mSv
1 TRI_2018-12-26	98.86
2 TRI_2017-01-03	76.08
3 TRI_2017-03-16	75.79
4 TRI_2018-10-19	57.62
5 TRI_2017-11-03	49.87
6 TRI_2017-12-06	39.79
7 TRI_2021-02-04	38.10
8 TRI_2018-06-20	35.59
9 TRI_2021-12-24	35.59
10 TRI_2018-02-16	32.50
11 TRI_2020-08-06	32.19
12 TRI_2017-08-22	32.11
13 TRI_2018-02-04	31.93
14 TRI_2017-06-13	27.22
15 TRI_2021-10-24	27.09
16 TRI_2018-09-04	26.65
17 TRI_2018-09-11	26.49
18 TRI_2018-08-28	26.05
19 TRI_2017-07-21	24.44
20 TRI_2021-09-23	23.08
21 TRI_2020-11-12	23.05
22 TRI_2017-05-05	22.67
23 TRI_2020-11-22	22.63
24 TRI_2021-01-19	22.23
25 TRI_2018-11-22	18.88
26 TRI_2021-12-22	18.83
27 TRI_2018-11-19	18.39
28 TRI_2018-10-17	17.69
29 TRI_2017-10-13	17.53
30 TRI_2021-04-23	16.47
31 TRI_2021-11-25	15.78
32 TRI_2021-10-14	15.70
33 TRI_2021-02-12	15.23
34 TRI_2020-05-04	15.01
35 TRI_2021-08-10	14.72
36 TRI_2021-10-27	14.45
37 TRI_2018-11-16	14.31
38 TRI_2018-04-18	14.11
39 TRI_2020-05-14	13.81
40 TRI_2018-06-26	13.28
41 TRI_2020-11-24	13.02
42 TRI_2018-01-24	12.72
43 TRI_2018-05-20	12.35
44 TRI_2020-02-15	12.26
45 TRI_2018-08-12	11.96
46 TRI_2017-06-26	11.83
47 TRI_2018-01-13	11.77
48 TRI_2017-04-21	11.59
49 TRI_2017-02-15	11.42
50 TRI_2021-12-18	11.23
51 TRI_2018-11-14	11.15
52 TRI_2018-02-28	10.88
53 TRI_2017-10-31	10.73
54 TRI_2018-12-13	10.54
55 TRI_2018-11-18	10.43
56 TRI_2021-07-22	10.25
57 TRI_2018-10-16	10.24
58 TRI_2017-06-08	10.23
59 TRI_2020-05-25	9.84
60 TRI_2020-06-23	9.10
61 TRI_2018-09-05	9.00
62 TRI_2020-11-27	8.80
63 TRI_2021-07-21	8.75
64 TRI_2020-02-06	8.48
65 TRI_2017-02-17	8.45
66 TRI_2018-12-18	8.41
67 TRI_2018-09-10	8.32
68 TRI_2017-09-21	8.11
69 TRI_2021-01-09	8.08
70 TRI_2018-11-21	8.06
71 TRI_2018-08-16	7.84
72 TRI_2021-11-24	7.79
73 TRI_2021-12-21	7.61
74 TRI_2018-11-15	7.59
75 TRI_2021-12-17	7.51
76 TRI_2018-04-12	7.49
77 TRI_2018-05-06	7.34
78 TRI_2020-11-28	7.23
79 TRI_2020-03-25	7.22
80 TRI_2020-07-19	7.06
81 TRI_2020-11-23	6.80
82 TRI_2021-09-03	6.61
83 TRI_2017-01-20	6.59
84 TRI_2020-05-07	6.58
85 TRI_2020-05-13	6.51
86 TRI_2018-10-09	6.29
87 TRI_2018-09-28	6.20
88 TRI_2020-09-15	6.18
89 TRI_2020-08-15	6.09
90 TRI_2020-01-06	5.98
91 TRI_2017-05-16	5.89
92 TRI_2021-11-11	5.86
93 TRI_2020-09-03	5.75
94 TRI_2017-09-26	5.72
95 TRI_2020-03-17	5.66
96 TRI_2017-06-18	5.56
97 TRI_2020-03-18	5.39
98 TRI_2017-09-22	5.25
99 TRI_2021-11-20	5.25
100 TRI_2020-01-13	5.17
101 TRI_2017-10-04	5.04
102 TRI_2018-05-28	4.97
103 TRI_2020-10-19	4.95
104 TRI_2020-01-21	4.84
105 TRI_2018-09-03	4.80
106 TRI_2018-06-19	4.78
107 TRI_2017-01-26	4.75
108 TRI_2018-10-04	4.68
109 TRI_2020-04-04	4.57
110 TRI_2020-05-27	4.53
111 TRI_2021-05-30	4.51
112 TRI_2020-11-05	4.35
113 TRI_2018-08-05	4.26
114 TRI_2018-09-25	4.21
115 TRI_2017-04-29	4.17
116 TRI_2020-07-29	4.17
117 TRI_2021-04-22	4.14
118 TRI_2017-11-01	4.09
119 TRI_2018-07-26	4.02
120 TRI_2017-02-25	4.01
121 TRI_2018-10-08	3.92
122 TRI_2018-07-29	3.87
123 TRI_2020-12-17	3.83
124 TRI_2020-09-08	3.75
125 TRI_2021-09-01	3.71
126 TRI_2021-03-26	3.67
127 TRI_2021-09-22	3.67
128 TRI_2020-04-21	3.64
129 TRI_2018-06-01	3.61
130 TRI_2018-11-08	3.50
131 TRI_2020-09-09	3.44
132 TRI_2020-09-13	3.41
133 TRI_2021-11-23	3.40
134 TRI_2017-01-21	3.39
135 TRI_2017-07-04	3.37
136 TRI_2021-07-19	3.25
137 TRI_2020-01-24	3.21
138 TRI_2018-06-02	3.20
139 TRI_2018-09-09	3.16
140 TRI_2017-05-24	3.12
141 TRI_2018-10-18	3.08
142 TRI_2020-03-31	3.05
143 TRI_2018-04-27	3.01
144 TRI_2020-01-23	2.87
145 TRI_2020-01-05	2.85
146 TRI_2017-04-20	2.76
147 TRI_2020-01-22	2.70
148 TRI_2018-01-27	2.60
149 TRI_2021-02-28	2.57
150 TRI_2018-11-20	2.56
151 TRI_2020-05-29	2.51
152 TRI_2018-09-16	2.45
153 TRI_2020-01-12	2.43
154 TRI_2020-09-16	2.41
155 TRI_2017-01-19	2.38
156 TRI_2020-09-17	2.37
157 TRI_2017-04-01	2.36
158 TRI_2021-03-23	2.26
159 TRI_2017-05-25	2.18
160 TRI_2021-07-20	2.16
161 TRI_2018-02-05	2.13
162 TRI_2021-11-19	2.13
163 TRI_2021-10-17	1.99
164 TRI_2021-05-28	1.97
165 TRI_2018-11-13	1.94
166 TRI_2021-03-28	1.94
167 TRI_2017-05-03	1.92
168 TRI_2021-01-04	1.90
169 TRI_2021-06-14	1.90
170 TRI_2021-10-25	1.83
171 TRI_2018-08-04	1.82
172 TRI_2018-04-19	1.72
173 TRI_2020-03-24	1.72
174 TRI_2017-04-08	1.67
175 TRI_2020-04-19	1.65
176 TRI_2021-10-15	1.65
177 TRI_2020-08-08	1.62
178 TRI_2020-01-20	1.60
179 TRI_2018-08-17	1.54
180 TRI_2020-11-17	1.52
181 TRI_2021-06-15	1.52
182 TRI_2020-05-12	1.45
183 TRI_2021-12-20	1.40
184 TRI_2021-08-12	1.37
185 TRI_2021-10-22	1.34
186 TRI_2017-02-16	1.33
187 TRI_2020-12-31	1.30
188 TRI_2021-08-24	1.28
189 TRI_2017-03-15	1.25
190 TRI_2018-12-30	1.24
191 TRI_2021-09-02	1.21
192 TRI_2017-07-20	1.20
193 TRI_2018-01-08	1.20
194 TRI_2020-03-26	1.18
195 TRI_2020-03-15	1.17
196 TRI_2018-04-05	1.15
197 TRI_2021-11-16	1.12
198 TRI_2017-04-07	1.11
199 TRI_2020-04-07	1.06
200 TRI_2020-05-11	1.04
201 TRI_2018-11-25	1.01
202 TRI_2020-11-04	0.98
203 TRI_2017-07-29	0.97
204 TRI_2018-05-31	0.97
205 TRI_2020-04-14	0.96
206 TRI_2017-01-02	0.93
207 TRI_2017-06-09	0.92
208 TRI_2018-11-17	0.92
209 TRI_2018-05-30	0.91
210 TRI_2021-07-04	0.89
211 TRI_2020-01-08	0.88
212 TRI_2020-03-23	0.83
213 TRI_2020-10-31	0.83
214 TRI_2017-08-21	0.80
215 TRI_2021-02-14	0.77
216 TRI_2018-07-15	0.76
217 TRI_2021-04-21	0.76
218 TRI_2017-07-03	0.75
219 TRI_2017-05-09	0.74
220 TRI_2021-04-02	0.73
221 TRI_2020-01-02	0.70
222 TRI_2021-11-14	0.69
223 TRI_2018-05-07	0.66
224 TRI_2021-04-04	0.65
225 TRI_2018-06-28	0.64
226 TRI_2020-05-28	0.61
227 TRI_2021-05-29	0.61
228 TRI_2017-05-04	0.60
229 TRI_2017-03-12	0.59
230 TRI_2017-11-05	0.59
231 TRI_2017-10-25	0.55
232 TRI_2017-08-06	0.53
233 TRI_2017-08-13	0.53
234 TRI_2018-08-10	0.53
235 TRI_2017-08-07	0.50
236 TRI_2018-02-27	0.50
237 TRI_2018-03-24	0.50
238 TRI_2021-04-20	0.49
239 TRI_2017-06-20	0.48
240 TRI_2021-08-31	0.48
241 TRI_2021-09-12	0.48
242 TRI_2018-06-04	0.47
243 TRI_2018-02-26	0.43
244 TRI_2020-04-12	0.41
245 TRI_2020-08-05	0.41
246 TRI_2018-04-20	0.39
247 TRI_2018-07-14	0.38
248 TRI_2020-05-05	0.34
249 TRI_2021-06-26	0.31
250 TRI_2021-10-26	0.31
251 TRI_2018-07-30	0.30
252 TRI_2020-09-06	0.30
253 TRI_2017-04-30	0.25
254 TRI_2017-01-25	0.24
255 TRI_2020-11-03	0.24
256 TRI_2021-03-27	0.24
257 TRI_2017-11-02	0.23
258 TRI_2018-05-08	0.21
259 TRI_2018-11-03	0.21
260 TRI_2020-09-07	0.21
261 TRI_2021-02-27	0.21
262 TRI_2020-03-29	0.20
263 TRI_2021-04-08	0.18
264 TRI_2018-10-28	0.17
265 TRI_2020-08-13	0.17
266 TRI_2020-04-13	0.16
267 TRI_2021-04-01	0.15
268 TRI_2018-01-26	0.14
269 TRI_2020-03-13	0.14
270 TRI_2020-03-30	0.14
271 TRI_2021-05-08	0.14
272 TRI_2020-07-28	0.11
273 TRI_2021-09-24	0.11
274 TRI_2017-05-21	0.10
275 TRI_2020-02-14	0.10
276 TRI_2021-05-07	0.09
277 TRI_2018-05-13	0.07
278 TRI_2018-05-19	0.04
279 TRI_2017-01-01	0.00
280 TRI_2017-01-04	0.00
281 TRI_2017-01-05	0.00
282 TRI_2017-01-06	0.00

Rank, NPP code, date

mSv

1 TRI_2018-12-26

98.86

76.08

75.79

57.62

49.87

39.79

38.10

35.59

35.59

32.50

32.19

32.11

31.93

27.22

27.09

26.65

26.49

26.05

24.44

23.08

23.05

22.67

22.63

22.23

18.88

18.83

18.39

17.69

17.53

16.47

15.78

15.70

15.23

15.01

14.72

14.45

14.31

14.11

13.81

13.28

13.02

12.72

12.35

12.26

11.96

11.83

11.77

11.59

11.42

11.23

11.15

10.88

10.73

10.54

10.43

10.25

10.24

10.23

9.84

9.10

9.00

8.80

8.75

8.48

8.45

8.41

8.32

8.11

8.08

8.06

7.84

7.79

7.61

7.59

7.51

7.49

7.34

7.23

7.22

7.06

6.80

6.61

6.59

6.58

6.51

6.29

6.20

6.18

6.09

5.98

5.89

5.86

5.75

5.72

5.66

5.56

5.39

5.25

5.25

5.17

5.04

4.97

4.95

4.84

4.80

4.78

4.75

4.68

4.57

4.53

4.51

4.35

4.26

4.21

4.17

4.17

4.14

4.09

4.02

4.01

3.92

3.87

3.83

3.75

3.71

3.67

3.67

3.64

3.61

3.50

3.44

3.41

3.40

3.39

3.37

3.25

3.21

3.20

3.16

3.12

3.08

3.05

3.01

2.87

2.85

2.76

2.70

2.60

2.57

2.56

2.51

2.45

2.43

2.41

2.38

2.37

2.36

2.26

2.18

2.16

2.13

2.13

1.99

1.97

1.94

1.94

1.92

1.90

1.90

1.83

1.82

1.72

1.72

1.67

1.65

1.65

1.62

1.60

1.54

1.52

1.52

1.45

1.40

1.37

1.34

1.33

1.30

1.28

1.25

1.24

1.21

1.20

1.20

1.18

1.17

1.15

1.12

1.11

1.06

1.04

1.01

0.98

0.97

0.97

0.96

0.93

0.92

0.92

0.91

0.89

0.88

0.83

0.83

0.80

0.77

0.76

0.76

0.75

0.74

0.73

0.70

0.69

0.66

0.65

0.64

0.61

0.61

0.60

0.59

0.59

0.55

0.53

0.53

0.53

0.50

0.50

0.50

0.49

0.48

0.48

0.48

0.47

0.43

0.41

0.41

0.39

0.38

0.34

0.31

0.31

0.30

0.30

0.25

0.24

0.24

0.24

0.23

0.21

0.21

0.21

0.21

0.20

0.18

0.17

0.17

0.16

0.15

0.14

0.14

0.14

0.14

0.11

0.11

0.10

0.10

0.09

0.07

0.04

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 :

Béziers (162 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)