Simulation of a nuclear major accident at the Tricastin NPP

Rank, NPP code, date	mSv
1 TRI_2020-04-12	31.78
2 TRI_2017-01-01	31.00
3 TRI_2020-06-26	27.86
4 TRI_2017-01-30	20.80
5 TRI_2020-01-02	20.49
6 TRI_2020-05-09	19.92
7 TRI_2020-04-16	18.05
8 TRI_2017-05-29	16.19
9 TRI_2021-09-09	14.33
10 TRI_2017-06-27	14.13
11 TRI_2021-01-22	13.72
12 TRI_2017-02-27	13.61
13 TRI_2020-08-12	13.46
14 TRI_2020-04-17	13.25
15 TRI_2020-01-14	13.14
16 TRI_2020-07-30	13.04
17 TRI_2021-03-03	12.39
18 TRI_2020-02-08	12.37
19 TRI_2018-06-09	12.29
20 TRI_2021-02-25	11.86
21 TRI_2021-06-03	11.43
22 TRI_2021-02-15	11.29
23 TRI_2020-10-25	11.08
24 TRI_2021-02-19	10.54
25 TRI_2021-06-04	10.48
26 TRI_2021-11-02	10.34
27 TRI_2017-08-15	10.07
28 TRI_2018-06-06	9.50
29 TRI_2017-08-26	9.36
30 TRI_2020-06-13	9.25
31 TRI_2021-06-17	9.18
32 TRI_2017-05-12	8.99
33 TRI_2021-10-01	8.57
34 TRI_2020-02-16	8.42
35 TRI_2020-01-17	8.19
36 TRI_2020-12-31	8.01
37 TRI_2021-10-27	7.87
38 TRI_2020-12-17	7.72
39 TRI_2020-01-26	7.69
40 TRI_2018-11-13	7.67
41 TRI_2021-09-13	7.55
42 TRI_2017-02-26	7.48
43 TRI_2020-05-08	7.39
44 TRI_2017-02-05	7.24
45 TRI_2021-03-30	7.16
46 TRI_2017-01-31	7.08
47 TRI_2020-01-12	7.08
48 TRI_2020-12-11	6.95
49 TRI_2020-08-16	6.90
50 TRI_2020-02-07	6.78
51 TRI_2018-01-10	6.72
52 TRI_2018-10-06	6.56
53 TRI_2020-01-09	6.50
54 TRI_2020-03-05	6.48
55 TRI_2017-05-16	6.46
56 TRI_2021-02-05	6.43
57 TRI_2017-06-19	6.36
58 TRI_2021-06-16	6.33
59 TRI_2021-06-22	6.30
60 TRI_2017-02-15	6.23
61 TRI_2020-11-13	6.19
62 TRI_2021-09-25	6.17
63 TRI_2020-01-06	6.16
64 TRI_2020-03-16	6.16
65 TRI_2021-12-27	6.15
66 TRI_2020-02-15	6.10
67 TRI_2018-03-08	6.05
68 TRI_2017-03-02	6.03
69 TRI_2017-09-27	5.83
70 TRI_2021-06-28	5.78
71 TRI_2017-11-04	5.73
72 TRI_2020-09-04	5.56
73 TRI_2020-04-11	5.53
74 TRI_2021-06-02	5.45
75 TRI_2020-01-13	5.38
76 TRI_2021-12-24	5.20
77 TRI_2021-01-19	5.07
78 TRI_2021-10-18	5.00
79 TRI_2020-12-20	4.95
80 TRI_2021-06-21	4.93
81 TRI_2017-05-02	4.81
82 TRI_2017-04-01	4.77
83 TRI_2020-08-21	4.74
84 TRI_2020-10-01	4.74
85 TRI_2017-03-31	4.67
86 TRI_2017-08-30	4.48
87 TRI_2017-09-29	4.42
88 TRI_2017-03-05	4.37
89 TRI_2021-09-15	4.21
90 TRI_2020-06-03	4.20
91 TRI_2021-12-23	4.11
92 TRI_2018-04-30	4.08
93 TRI_2021-10-24	4.08
94 TRI_2020-11-01	4.04
95 TRI_2020-02-09	4.02
96 TRI_2021-04-10	4.02
97 TRI_2020-05-10	3.97
98 TRI_2020-09-22	3.97
99 TRI_2017-07-17	3.95
100 TRI_2020-08-19	3.94
101 TRI_2018-01-15	3.88
102 TRI_2021-02-18	3.87
103 TRI_2017-11-01	3.86
104 TRI_2018-10-30	3.82
105 TRI_2020-04-27	3.80
106 TRI_2020-11-12	3.80
107 TRI_2018-04-08	3.67
108 TRI_2021-04-09	3.63
109 TRI_2017-08-02	3.60
110 TRI_2017-11-24	3.54
111 TRI_2020-12-04	3.49
112 TRI_2020-12-23	3.38
113 TRI_2017-10-17	3.36
114 TRI_2018-10-04	3.36
115 TRI_2017-12-07	3.31
116 TRI_2018-12-19	3.31
117 TRI_2020-10-23	3.28
118 TRI_2017-03-27	3.25
119 TRI_2017-09-09	3.23
120 TRI_2020-06-24	3.23
121 TRI_2020-10-04	3.21
122 TRI_2020-09-14	3.19
123 TRI_2017-05-04	3.14
124 TRI_2017-11-28	3.14
125 TRI_2017-07-30	3.09
126 TRI_2020-08-15	3.09
127 TRI_2018-08-12	3.06
128 TRI_2021-07-12	3.06
129 TRI_2018-08-07	3.04
130 TRI_2017-07-29	2.98
131 TRI_2018-04-21	2.97
132 TRI_2017-04-24	2.95
133 TRI_2020-04-06	2.92
134 TRI_2021-05-10	2.84
135 TRI_2017-10-20	2.83
136 TRI_2017-05-17	2.81
137 TRI_2020-01-27	2.81
138 TRI_2021-03-26	2.80
139 TRI_2021-05-15	2.77
140 TRI_2021-02-03	2.72
141 TRI_2021-05-08	2.70
142 TRI_2020-12-28	2.66
143 TRI_2021-02-14	2.66
144 TRI_2018-06-11	2.64
145 TRI_2017-09-26	2.58
146 TRI_2017-08-01	2.52
147 TRI_2020-06-25	2.51
148 TRI_2017-05-06	2.47
149 TRI_2018-09-18	2.47
150 TRI_2017-11-02	2.46
151 TRI_2020-08-11	2.44
152 TRI_2020-11-02	2.42
153 TRI_2017-10-11	2.41
154 TRI_2018-08-06	2.35
155 TRI_2020-11-15	2.35
156 TRI_2017-10-13	2.32
157 TRI_2018-01-05	2.31
158 TRI_2018-05-12	2.31
159 TRI_2018-05-31	2.29
160 TRI_2021-12-22	2.29
161 TRI_2018-10-29	2.28
162 TRI_2017-05-26	2.25
163 TRI_2020-10-06	2.25
164 TRI_2020-10-31	2.24
165 TRI_2017-05-18	2.19
166 TRI_2021-03-02	2.17
167 TRI_2017-03-22	2.16
168 TRI_2018-03-30	2.11
169 TRI_2020-12-29	2.09
170 TRI_2018-03-04	2.08
171 TRI_2021-09-24	2.07
172 TRI_2020-08-20	2.05
173 TRI_2017-02-03	1.99
174 TRI_2017-05-31	1.99
175 TRI_2018-08-09	1.99
176 TRI_2021-06-20	1.98
177 TRI_2018-11-21	1.94
178 TRI_2021-06-18	1.93
179 TRI_2017-10-15	1.92
180 TRI_2017-12-26	1.89
181 TRI_2017-04-23	1.88
182 TRI_2020-01-15	1.88
183 TRI_2020-09-30	1.86
184 TRI_2017-12-25	1.84
185 TRI_2020-11-17	1.83
186 TRI_2020-11-11	1.78
187 TRI_2020-10-22	1.77
188 TRI_2021-10-20	1.75
189 TRI_2017-05-22	1.74
190 TRI_2017-07-06	1.72
191 TRI_2020-11-18	1.72
192 TRI_2017-08-23	1.71
193 TRI_2020-08-13	1.71
194 TRI_2017-06-08	1.70
195 TRI_2021-07-23	1.70
196 TRI_2017-12-06	1.69
197 TRI_2018-01-31	1.68
198 TRI_2020-08-09	1.68
199 TRI_2018-01-24	1.66
200 TRI_2020-12-21	1.65
201 TRI_2021-03-31	1.63
202 TRI_2018-09-17	1.62
203 TRI_2020-10-18	1.61
204 TRI_2017-02-01	1.59
205 TRI_2021-01-20	1.59
206 TRI_2017-05-28	1.57
207 TRI_2021-07-24	1.56
208 TRI_2017-10-16	1.54
209 TRI_2018-06-04	1.54
210 TRI_2021-06-27	1.54
211 TRI_2020-12-05	1.53
212 TRI_2017-04-08	1.50
213 TRI_2018-09-16	1.48
214 TRI_2018-12-13	1.46
215 TRI_2018-09-28	1.43
216 TRI_2020-01-08	1.43
217 TRI_2017-07-10	1.42
218 TRI_2018-04-13	1.42
219 TRI_2018-11-11	1.41
220 TRI_2020-10-19	1.39
221 TRI_2020-02-14	1.38
222 TRI_2020-10-03	1.38
223 TRI_2018-06-05	1.35
224 TRI_2017-07-04	1.33
225 TRI_2021-02-09	1.32
226 TRI_2017-07-18	1.31
227 TRI_2018-03-09	1.30
228 TRI_2018-04-12	1.30
229 TRI_2018-06-10	1.29
230 TRI_2018-12-21	1.26
231 TRI_2020-12-06	1.26
232 TRI_2017-12-10	1.24
233 TRI_2021-02-16	1.24
234 TRI_2021-08-14	1.21
235 TRI_2018-03-05	1.19
236 TRI_2020-03-15	1.19
237 TRI_2017-05-30	1.18
238 TRI_2020-11-07	1.17
239 TRI_2021-02-17	1.16
240 TRI_2018-05-26	1.15
241 TRI_2017-06-18	1.14
242 TRI_2018-04-27	1.14
243 TRI_2017-06-26	1.11
244 TRI_2017-05-27	1.10
245 TRI_2018-09-10	1.09
246 TRI_2018-10-15	1.07
247 TRI_2020-12-14	1.07
248 TRI_2017-11-23	1.06
249 TRI_2018-11-30	1.06
250 TRI_2017-08-14	1.05
251 TRI_2021-09-23	1.03
252 TRI_2017-01-29	1.01
253 TRI_2020-02-01	1.00
254 TRI_2021-02-24	0.99
255 TRI_2020-03-02	0.98
256 TRI_2017-01-28	0.95
257 TRI_2018-10-05	0.94
258 TRI_2017-07-20	0.93
259 TRI_2020-05-11	0.92
260 TRI_2021-09-08	0.92
261 TRI_2017-07-08	0.91
262 TRI_2017-07-19	0.90
263 TRI_2020-04-10	0.90
264 TRI_2018-06-30	0.88
265 TRI_2021-01-21	0.88
266 TRI_2020-12-07	0.87
267 TRI_2021-04-28	0.87
268 TRI_2021-06-23	0.87
269 TRI_2018-12-02	0.84
270 TRI_2017-09-28	0.83
271 TRI_2018-04-20	0.80
272 TRI_2018-08-28	0.80
273 TRI_2021-07-06	0.80
274 TRI_2017-01-02	0.79
275 TRI_2021-04-27	0.79
276 TRI_2020-08-10	0.78
277 TRI_2017-08-13	0.77
278 TRI_2020-04-05	0.77
279 TRI_2018-05-30	0.73
280 TRI_2017-03-15	0.72
281 TRI_2021-01-02	0.70
282 TRI_2018-01-25	0.67
283 TRI_2021-07-22	0.65
284 TRI_2017-12-27	0.62
285 TRI_2021-10-19	0.59
286 TRI_2018-04-04	0.58
287 TRI_2018-05-11	0.56
288 TRI_2020-09-23	0.56
289 TRI_2021-02-22	0.55
290 TRI_2018-07-04	0.53
291 TRI_2018-04-22	0.51
292 TRI_2021-06-26	0.51
293 TRI_2020-09-20	0.49
294 TRI_2018-10-26	0.47
295 TRI_2020-12-27	0.46
296 TRI_2021-02-20	0.46
297 TRI_2020-02-13	0.43
298 TRI_2018-07-27	0.42
299 TRI_2018-07-01	0.41
300 TRI_2017-10-31	0.39
301 TRI_2020-09-18	0.39
302 TRI_2018-05-29	0.37
303 TRI_2020-03-01	0.37
304 TRI_2021-09-02	0.37
305 TRI_2017-04-09	0.36
306 TRI_2018-10-28	0.36
307 TRI_2017-02-28	0.35
308 TRI_2018-05-25	0.35
309 TRI_2021-12-04	0.35
310 TRI_2017-06-30	0.31
311 TRI_2021-06-19	0.30
312 TRI_2018-04-10	0.28
313 TRI_2020-10-20	0.28
314 TRI_2021-04-08	0.27
315 TRI_2017-03-30	0.26
316 TRI_2017-11-22	0.26
317 TRI_2020-02-28	0.26
318 TRI_2020-02-17	0.22
319 TRI_2020-05-13	0.21
320 TRI_2018-08-08	0.20
321 TRI_2017-12-15	0.19
322 TRI_2017-08-24	0.18
323 TRI_2018-07-26	0.16
324 TRI_2021-02-08	0.13
325 TRI_2021-10-31	0.13
326 TRI_2017-04-29	0.12
327 TRI_2020-07-27	0.12
328 TRI_2017-06-20	0.11
329 TRI_2017-12-12	0.10
330 TRI_2020-06-11	0.10
331 TRI_2017-02-23	0.08
332 TRI_2017-01-03	0.00
333 TRI_2017-01-04	0.00
334 TRI_2017-01-05	0.00
335 TRI_2017-01-06	0.00

Rank, NPP code, date

mSv

1 TRI_2020-04-12

31.78

31.00

27.86

20.80

20.49

19.92

18.05

16.19

14.33

14.13

13.72

13.61

13.46

13.25

13.14

13.04

12.39

12.37

12.29

11.86

11.43

11.29

11.08

10.54

10.48

10.34

10.07

9.50

9.36

9.25

9.18

8.99

8.57

8.42

8.19

8.01

7.87

7.72

7.69

7.67

7.55

7.48

7.39

7.24

7.16

7.08

7.08

6.95

6.90

6.78

6.72

6.56

6.50

6.48

6.46

6.43

6.36

6.33

6.30

6.23

6.19

6.17

6.16

6.16

6.15

6.10

6.05

6.03

5.83

5.78

5.73

5.56

5.53

5.45

5.38

5.20

5.07

5.00

4.95

4.93

4.81

4.77

4.74

4.74

4.67

4.48

4.42

4.37

4.21

4.20

4.11

4.08

4.08

4.04

4.02

4.02

3.97

3.97

3.95

3.94

3.88

3.87

3.86

3.82

3.80

3.80

3.67

3.63

3.60

3.54

3.49

3.38

3.36

3.36

3.31

3.31

3.28

3.25

3.23

3.23

3.21

3.19

3.14

3.14

3.09

3.09

3.06

3.06

3.04

2.98

2.97

2.95

2.92

2.84

2.83

2.81

2.81

2.80

2.77

2.72

2.70

2.66

2.66

2.64

2.58

2.52

2.51

2.47

2.47

2.46

2.44

2.42

2.41

2.35

2.35

2.32

2.31

2.31

2.29

2.29

2.28

2.25

2.25

2.24

2.19

2.17

2.16

2.11

2.09

2.08

2.07

2.05

1.99

1.99

1.99

1.98

1.94

1.93

1.92

1.89

1.88

1.88

1.86

1.84

1.83

1.78

1.77

1.75

1.74

1.72

1.72

1.71

1.71

1.70

1.70

1.69

1.68

1.68

1.66

1.65

1.63

1.62

1.61

1.59

1.59

1.57

1.56

1.54

1.54

1.54

1.53

1.50

1.48

1.46

1.43

1.43

1.42

1.42

1.41

1.39

1.38

1.38

1.35

1.33

1.32

1.31

1.30

1.30

1.29

1.26

1.26

1.24

1.24

1.21

1.19

1.19

1.18

1.17

1.16

1.15

1.14

1.14

1.11

1.10

1.09

1.07

1.07

1.06

1.06

1.05

1.03

1.01

1.00

0.99

0.98

0.95

0.94

0.93

0.92

0.92

0.91

0.90

0.90

0.88

0.88

0.87

0.87

0.87

0.84

0.83

0.80

0.80

0.80

0.79

0.79

0.78

0.77

0.77

0.73

0.72

0.70

0.67

0.65

0.62

0.59

0.58

0.56

0.56

0.55

0.53

0.51

0.51

0.49

0.47

0.46

0.46

0.43

0.42

0.41

0.39

0.39

0.37

0.37

0.37

0.36

0.36

0.35

0.35

0.35

0.31

0.30

0.28

0.28

0.27

0.26

0.26

0.26

0.22

0.21

0.20

0.19

0.18

0.16

0.13

0.13

0.12

0.12

0.11

0.10

0.10

0.08

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 :

Mulhouse (432 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)