Simulation of a nuclear major accident at the Tricastin NPP

Rank, NPP code, date	mSv
1 TRI_2020-01-25	102.75
2 TRI_2017-01-27	54.22
3 TRI_2020-04-08	48.11
4 TRI_2020-11-08	45.28
5 TRI_2020-05-11	42.92
6 TRI_2020-12-17	39.45
7 TRI_2017-03-23	35.77
8 TRI_2017-06-01	31.47
9 TRI_2018-11-17	25.03
10 TRI_2020-09-20	23.96
11 TRI_2020-10-23	23.96
12 TRI_2021-02-22	23.43
13 TRI_2020-07-30	22.70
14 TRI_2018-04-08	21.14
15 TRI_2018-11-01	19.81
16 TRI_2020-12-16	19.09
17 TRI_2021-04-01	18.77
18 TRI_2020-04-10	18.44
19 TRI_2021-12-24	18.23
20 TRI_2020-09-19	17.80
21 TRI_2020-03-20	17.31
22 TRI_2020-06-01	16.66
23 TRI_2020-11-26	16.36
24 TRI_2018-05-25	15.79
25 TRI_2020-08-11	15.59
26 TRI_2018-12-13	14.75
27 TRI_2021-06-21	14.57
28 TRI_2020-01-24	14.46
29 TRI_2020-09-04	13.77
30 TRI_2018-11-09	13.75
31 TRI_2021-07-23	13.16
32 TRI_2021-10-18	13.15
33 TRI_2017-03-30	13.01
34 TRI_2018-06-30	12.97
35 TRI_2017-03-04	12.74
36 TRI_2021-04-24	12.40
37 TRI_2020-11-12	12.38
38 TRI_2021-03-29	12.12
39 TRI_2020-08-10	12.09
40 TRI_2021-03-01	11.48
41 TRI_2017-09-28	11.31
42 TRI_2017-05-31	11.28
43 TRI_2020-07-31	11.16
44 TRI_2018-10-11	11.02
45 TRI_2021-10-27	10.88
46 TRI_2021-10-31	10.71
47 TRI_2017-07-17	10.30
48 TRI_2017-02-12	10.12
49 TRI_2020-10-19	9.77
50 TRI_2020-11-06	9.73
51 TRI_2020-11-27	9.71
52 TRI_2020-03-18	9.67
53 TRI_2021-10-30	9.38
54 TRI_2018-06-09	9.37
55 TRI_2018-03-15	9.33
56 TRI_2017-06-20	9.18
57 TRI_2020-09-15	9.05
58 TRI_2018-03-24	9.02
59 TRI_2018-06-03	8.89
60 TRI_2020-06-12	8.26
61 TRI_2020-09-18	8.21
62 TRI_2020-06-24	8.10
63 TRI_2021-12-22	8.07
64 TRI_2018-04-21	8.06
65 TRI_2017-07-09	7.98
66 TRI_2018-11-05	7.93
67 TRI_2017-11-01	7.77
68 TRI_2021-11-09	7.59
69 TRI_2017-05-05	7.56
70 TRI_2018-11-21	7.54
71 TRI_2020-04-15	7.25
72 TRI_2021-10-28	7.17
73 TRI_2021-05-31	7.05
74 TRI_2020-09-14	6.94
75 TRI_2018-11-13	6.77
76 TRI_2018-10-15	6.71
77 TRI_2018-06-02	6.65
78 TRI_2018-09-28	6.61
79 TRI_2017-05-16	6.56
80 TRI_2018-09-25	6.53
81 TRI_2018-04-12	6.52
82 TRI_2020-01-16	6.17
83 TRI_2020-04-04	5.90
84 TRI_2020-05-04	5.89
85 TRI_2020-03-15	5.74
86 TRI_2021-02-05	5.59
87 TRI_2021-02-04	5.46
88 TRI_2018-03-11	5.42
89 TRI_2021-06-16	5.35
90 TRI_2021-10-24	5.25
91 TRI_2018-03-04	5.18
92 TRI_2020-03-02	5.16
93 TRI_2018-09-26	5.14
94 TRI_2018-10-05	5.13
95 TRI_2020-12-18	5.05
96 TRI_2017-05-26	5.02
97 TRI_2020-02-06	4.97
98 TRI_2021-01-19	4.97
99 TRI_2021-09-07	4.97
100 TRI_2018-01-24	4.96
101 TRI_2018-03-01	4.78
102 TRI_2021-09-23	4.78
103 TRI_2017-09-26	4.69
104 TRI_2020-05-31	4.67
105 TRI_2017-01-28	4.49
106 TRI_2017-07-04	4.49
107 TRI_2020-11-23	4.48
108 TRI_2018-06-29	4.47
109 TRI_2021-09-02	4.44
110 TRI_2021-04-21	4.40
111 TRI_2017-05-09	4.26
112 TRI_2021-02-23	4.26
113 TRI_2018-11-15	4.23
114 TRI_2018-05-26	4.10
115 TRI_2020-02-15	4.08
116 TRI_2020-12-07	3.98
117 TRI_2018-10-31	3.89
118 TRI_2020-05-13	3.85
119 TRI_2021-05-30	3.82
120 TRI_2017-02-10	3.79
121 TRI_2021-06-27	3.59
122 TRI_2017-07-07	3.58
123 TRI_2021-03-30	3.57
124 TRI_2021-10-17	3.55
125 TRI_2021-12-17	3.55
126 TRI_2021-09-24	3.49
127 TRI_2017-06-26	3.35
128 TRI_2018-07-01	3.28
129 TRI_2018-01-09	3.22
130 TRI_2020-05-07	3.20
131 TRI_2017-10-13	3.18
132 TRI_2021-07-22	3.17
133 TRI_2018-04-06	3.13
134 TRI_2018-10-04	3.11
135 TRI_2021-09-06	3.09
136 TRI_2018-04-14	3.06
137 TRI_2018-04-19	3.05
138 TRI_2021-09-05	3.00
139 TRI_2017-05-10	2.94
140 TRI_2020-08-09	2.91
141 TRI_2021-03-02	2.88
142 TRI_2018-08-12	2.60
143 TRI_2018-04-18	2.56
144 TRI_2018-09-16	2.54
145 TRI_2020-06-25	2.52
146 TRI_2018-09-10	2.50
147 TRI_2017-02-13	2.49
148 TRI_2018-08-28	2.49
149 TRI_2020-01-13	2.46
150 TRI_2021-04-25	2.46
151 TRI_2017-03-02	2.39
152 TRI_2020-04-13	2.37
153 TRI_2021-02-09	2.34
154 TRI_2018-05-29	2.32
155 TRI_2018-03-05	2.27
156 TRI_2018-07-04	2.27
157 TRI_2021-04-26	2.21
158 TRI_2018-06-05	2.15
159 TRI_2018-11-23	2.12
160 TRI_2020-04-07	2.12
161 TRI_2018-04-20	2.09
162 TRI_2020-04-09	2.05
163 TRI_2020-01-23	2.00
164 TRI_2018-01-14	1.97
165 TRI_2018-11-20	1.97
166 TRI_2018-02-06	1.96
167 TRI_2018-09-11	1.92
168 TRI_2020-04-11	1.89
169 TRI_2020-03-21	1.88
170 TRI_2020-08-15	1.83
171 TRI_2017-04-29	1.79
172 TRI_2017-08-28	1.77
173 TRI_2021-03-06	1.74
174 TRI_2021-02-06	1.73
175 TRI_2018-06-04	1.72
176 TRI_2017-11-02	1.68
177 TRI_2017-06-13	1.67
178 TRI_2017-09-27	1.64
179 TRI_2018-05-24	1.62
180 TRI_2018-05-27	1.61
181 TRI_2018-04-27	1.60
182 TRI_2017-05-04	1.58
183 TRI_2021-04-08	1.57
184 TRI_2020-06-23	1.56
185 TRI_2020-03-23	1.54
186 TRI_2020-08-08	1.53
187 TRI_2017-07-31	1.52
188 TRI_2020-09-17	1.39
189 TRI_2021-06-26	1.36
190 TRI_2021-11-19	1.34
191 TRI_2018-11-08	1.33
192 TRI_2020-03-24	1.32
193 TRI_2017-05-11	1.31
194 TRI_2017-04-08	1.29
195 TRI_2018-08-06	1.28
196 TRI_2018-07-27	1.27
197 TRI_2020-03-19	1.27
198 TRI_2021-02-14	1.27
199 TRI_2021-04-20	1.26
200 TRI_2017-07-03	1.20
201 TRI_2020-04-14	1.20
202 TRI_2021-09-12	1.19
203 TRI_2017-04-28	1.14
204 TRI_2021-11-08	1.14
205 TRI_2021-04-23	1.11
206 TRI_2018-11-19	1.10
207 TRI_2017-08-14	1.09
208 TRI_2020-07-29	1.09
209 TRI_2021-12-21	1.06
210 TRI_2017-06-08	1.05
211 TRI_2018-04-10	1.03
212 TRI_2018-12-18	1.02
213 TRI_2020-04-25	1.02
214 TRI_2017-08-27	0.99
215 TRI_2018-10-07	0.98
216 TRI_2020-02-14	0.96
217 TRI_2017-05-30	0.94
218 TRI_2020-01-12	0.93
219 TRI_2021-09-03	0.93
220 TRI_2017-03-27	0.89
221 TRI_2017-06-18	0.85
222 TRI_2018-05-12	0.84
223 TRI_2018-05-20	0.82
224 TRI_2018-01-08	0.79
225 TRI_2018-01-23	0.77
226 TRI_2018-03-02	0.77
227 TRI_2020-04-01	0.77
228 TRI_2018-10-28	0.76
229 TRI_2018-11-06	0.76
230 TRI_2021-05-08	0.76
231 TRI_2018-06-06	0.75
232 TRI_2017-05-21	0.74
233 TRI_2018-11-16	0.74
234 TRI_2018-05-30	0.72
235 TRI_2018-02-28	0.71
236 TRI_2018-01-06	0.70
237 TRI_2017-08-29	0.68
238 TRI_2018-01-10	0.67
239 TRI_2017-05-24	0.66
240 TRI_2018-10-06	0.65
241 TRI_2018-05-11	0.63
242 TRI_2018-03-14	0.62
243 TRI_2021-10-03	0.61
244 TRI_2018-03-10	0.57
245 TRI_2021-01-20	0.56
246 TRI_2017-05-12	0.55
247 TRI_2017-03-22	0.51
248 TRI_2021-03-27	0.49
249 TRI_2017-10-31	0.45
250 TRI_2018-12-26	0.44
251 TRI_2021-01-21	0.44
252 TRI_2017-02-14	0.42
253 TRI_2017-12-06	0.42
254 TRI_2021-03-31	0.41
255 TRI_2021-09-30	0.41
256 TRI_2020-03-25	0.40
257 TRI_2021-06-14	0.40
258 TRI_2017-08-22	0.39
259 TRI_2018-11-25	0.39
260 TRI_2020-10-18	0.38
261 TRI_2017-03-26	0.36
262 TRI_2018-10-27	0.34
263 TRI_2020-11-22	0.34
264 TRI_2021-12-20	0.34
265 TRI_2017-05-27	0.33
266 TRI_2020-04-05	0.33
267 TRI_2018-04-28	0.31
268 TRI_2018-05-07	0.31
269 TRI_2021-03-04	0.31
270 TRI_2021-06-15	0.30
271 TRI_2021-08-14	0.30
272 TRI_2018-09-27	0.29
273 TRI_2017-01-25	0.26
274 TRI_2018-09-17	0.26
275 TRI_2018-05-01	0.24
276 TRI_2021-08-12	0.24
277 TRI_2017-04-01	0.22
278 TRI_2020-08-07	0.22
279 TRI_2020-09-13	0.22
280 TRI_2017-08-23	0.21
281 TRI_2018-10-13	0.21
282 TRI_2021-05-07	0.21
283 TRI_2020-05-10	0.18
284 TRI_2020-09-16	0.16
285 TRI_2017-12-11	0.15
286 TRI_2018-02-27	0.14
287 TRI_2018-11-04	0.14
288 TRI_2020-06-11	0.13
289 TRI_2018-04-05	0.11
290 TRI_2017-05-03	0.10
291 TRI_2018-08-05	0.03
292 TRI_2017-01-01	0.00
293 TRI_2017-01-02	0.00
294 TRI_2017-01-03	0.00
295 TRI_2017-01-04	0.00

Rank, NPP code, date

mSv

1 TRI_2020-01-25

102.75

54.22

48.11

45.28

42.92

39.45

35.77

31.47

25.03

23.96

23.96

23.43

22.70

21.14

19.81

19.09

18.77

18.44

18.23

17.80

17.31

16.66

16.36

15.79

15.59

14.75

14.57

14.46

13.77

13.75

13.16

13.15

13.01

12.97

12.74

12.40

12.38

12.12

12.09

11.48

11.31

11.28

11.16

11.02

10.88

10.71

10.30

10.12

9.77

9.73

9.71

9.67

9.38

9.37

9.33

9.18

9.05

9.02

8.89

8.26

8.21

8.10

8.07

8.06

7.98

7.93

7.77

7.59

7.56

7.54

7.25

7.17

7.05

6.94

6.77

6.71

6.65

6.61

6.56

6.53

6.52

6.17

5.90

5.89

5.74

5.59

5.46

5.42

5.35

5.25

5.18

5.16

5.14

5.13

5.05

5.02

4.97

4.97

4.97

4.96

4.78

4.78

4.69

4.67

4.49

4.49

4.48

4.47

4.44

4.40

4.26

4.26

4.23

4.10

4.08

3.98

3.89

3.85

3.82

3.79

3.59

3.58

3.57

3.55

3.55

3.49

3.35

3.28

3.22

3.20

3.18

3.17

3.13

3.11

3.09

3.06

3.05

3.00

2.94

2.91

2.88

2.60

2.56

2.54

2.52

2.50

2.49

2.49

2.46

2.46

2.39

2.37

2.34

2.32

2.27

2.27

2.21

2.15

2.12

2.12

2.09

2.05

2.00

1.97

1.97

1.96

1.92

1.89

1.88

1.83

1.79

1.77

1.74

1.73

1.72

1.68

1.67

1.64

1.62

1.61

1.60

1.58

1.57

1.56

1.54

1.53

1.52

1.39

1.36

1.34

1.33

1.32

1.31

1.29

1.28

1.27

1.27

1.27

1.26

1.20

1.20

1.19

1.14

1.14

1.11

1.10

1.09

1.09

1.06

1.05

1.03

1.02

1.02

0.99

0.98

0.96

0.94

0.93

0.93

0.89

0.85

0.84

0.82

0.79

0.77

0.77

0.77

0.76

0.76

0.76

0.75

0.74

0.74

0.72

0.71

0.70

0.68

0.67

0.66

0.65

0.63

0.62

0.61

0.57

0.56

0.55

0.51

0.49

0.45

0.44

0.44

0.42

0.42

0.41

0.41

0.40

0.40

0.39

0.39

0.38

0.36

0.34

0.34

0.34

0.33

0.33

0.31

0.31

0.31

0.30

0.30

0.29

0.26

0.26

0.24

0.24

0.22

0.22

0.22

0.21

0.21

0.21

0.18

0.16

0.15

0.14

0.14

0.13

0.11

0.10

0.03

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 :

Roanne (197 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)