Simulation of a nuclear major accident at the Tricastin NPP

Rank, NPP code, date	mSv
1 TRI_2020-12-24	80.43
2 TRI_2021-11-27	57.44
3 TRI_2020-05-05	36.57
4 TRI_2020-02-10	29.19
5 TRI_2020-10-31	29.11
6 TRI_2017-06-09	25.82
7 TRI_2021-10-21	23.85
8 TRI_2017-02-23	22.72
9 TRI_2020-09-23	22.59
10 TRI_2017-04-26	22.56
11 TRI_2017-11-08	22.08
12 TRI_2021-03-04	20.27
13 TRI_2020-01-13	19.90
14 TRI_2021-03-11	19.14
15 TRI_2020-07-21	18.61
16 TRI_2020-07-27	17.97
17 TRI_2020-04-01	17.80
18 TRI_2017-06-20	17.79
19 TRI_2020-10-05	17.11
20 TRI_2020-02-15	13.92
21 TRI_2017-02-03	13.91
22 TRI_2020-09-05	13.12
23 TRI_2020-01-06	13.09
24 TRI_2018-08-29	12.10
25 TRI_2021-05-06	11.98
26 TRI_2021-02-14	11.80
27 TRI_2020-07-10	11.66
28 TRI_2020-01-28	11.65
29 TRI_2021-12-28	11.54
30 TRI_2020-08-28	11.17
31 TRI_2017-01-03	11.08
32 TRI_2020-09-21	11.08
33 TRI_2020-12-21	10.78
34 TRI_2021-06-24	10.68
35 TRI_2020-01-26	10.62
36 TRI_2021-02-01	10.45
37 TRI_2020-06-13	10.27
38 TRI_2020-05-22	10.04
39 TRI_2020-11-01	9.88
40 TRI_2018-03-12	9.66
41 TRI_2018-01-30	9.40
42 TRI_2020-01-12	9.06
43 TRI_2020-01-03	8.90
44 TRI_2017-06-04	8.72
45 TRI_2020-05-23	8.52
46 TRI_2021-11-02	8.52
47 TRI_2021-12-25	8.44
48 TRI_2017-04-23	8.25
49 TRI_2020-05-04	8.04
50 TRI_2020-02-13	8.00
51 TRI_2018-08-13	7.81
52 TRI_2020-08-09	7.66
53 TRI_2020-11-18	7.56
54 TRI_2020-02-06	7.45
55 TRI_2021-01-19	7.21
56 TRI_2021-12-21	6.84
57 TRI_2017-03-19	6.81
58 TRI_2020-07-20	6.59
59 TRI_2021-02-08	6.46
60 TRI_2017-05-02	6.39
61 TRI_2017-02-05	6.18
62 TRI_2020-03-01	5.64
63 TRI_2017-06-28	5.63
64 TRI_2020-10-28	5.58
65 TRI_2021-05-24	5.56
66 TRI_2018-07-02	5.40
67 TRI_2017-02-21	5.34
68 TRI_2021-08-15	5.32
69 TRI_2020-10-04	5.25
70 TRI_2017-12-08	5.22
71 TRI_2021-05-16	5.10
72 TRI_2020-09-24	5.09
73 TRI_2020-04-30	4.94
74 TRI_2021-08-21	4.91
75 TRI_2017-07-07	4.78
76 TRI_2021-12-27	4.78
77 TRI_2020-05-01	4.61
78 TRI_2021-05-15	4.59
79 TRI_2020-06-27	4.49
80 TRI_2021-05-05	4.46
81 TRI_2020-10-06	4.40
82 TRI_2021-02-15	4.30
83 TRI_2020-02-27	4.25
84 TRI_2020-06-04	4.22
85 TRI_2021-12-10	4.18
86 TRI_2017-06-13	4.16
87 TRI_2017-03-05	4.15
88 TRI_2018-03-14	3.93
89 TRI_2020-07-31	3.79
90 TRI_2018-02-01	3.64
91 TRI_2020-06-09	3.60
92 TRI_2017-06-05	3.55
93 TRI_2021-05-31	3.55
94 TRI_2017-12-14	3.51
95 TRI_2017-06-22	3.49
96 TRI_2018-02-27	3.44
97 TRI_2021-08-03	3.37
98 TRI_2017-06-29	3.36
99 TRI_2021-06-23	3.17
100 TRI_2021-07-07	3.12
101 TRI_2018-05-23	3.06
102 TRI_2021-04-24	3.01
103 TRI_2021-07-27	2.95
104 TRI_2017-05-19	2.92
105 TRI_2017-10-08	2.92
106 TRI_2021-04-19	2.89
107 TRI_2017-06-21	2.85
108 TRI_2020-03-12	2.83
109 TRI_2020-08-19	2.83
110 TRI_2018-07-27	2.78
111 TRI_2017-04-09	2.71
112 TRI_2021-07-26	2.71
113 TRI_2017-04-22	2.68
114 TRI_2020-05-15	2.65
115 TRI_2021-09-06	2.64
116 TRI_2021-04-08	2.60
117 TRI_2017-09-14	2.59
118 TRI_2020-04-24	2.56
119 TRI_2020-06-28	2.53
120 TRI_2018-03-24	2.46
121 TRI_2017-08-23	2.43
122 TRI_2021-02-17	2.38
123 TRI_2021-09-26	2.35
124 TRI_2020-03-05	2.32
125 TRI_2020-06-02	2.30
126 TRI_2018-06-29	2.26
127 TRI_2021-09-18	2.25
128 TRI_2018-07-15	2.24
129 TRI_2018-07-20	2.23
130 TRI_2017-12-12	2.21
131 TRI_2021-05-11	2.20
132 TRI_2020-08-13	2.17
133 TRI_2021-11-01	2.13
134 TRI_2020-07-28	2.12
135 TRI_2021-03-25	2.09
136 TRI_2018-09-21	2.08
137 TRI_2017-06-06	2.04
138 TRI_2020-06-24	2.04
139 TRI_2021-05-08	2.01
140 TRI_2017-06-08	1.96
141 TRI_2021-06-26	1.96
142 TRI_2018-05-11	1.93
143 TRI_2017-12-24	1.91
144 TRI_2017-04-21	1.90
145 TRI_2017-11-05	1.90
146 TRI_2020-04-25	1.90
147 TRI_2018-01-16	1.89
148 TRI_2020-05-30	1.89
149 TRI_2017-12-07	1.88
150 TRI_2018-09-12	1.86
151 TRI_2017-06-11	1.85
152 TRI_2018-06-01	1.84
153 TRI_2017-05-22	1.83
154 TRI_2020-07-30	1.83
155 TRI_2017-06-19	1.82
156 TRI_2020-04-26	1.79
157 TRI_2021-08-30	1.78
158 TRI_2018-01-18	1.76
159 TRI_2017-05-21	1.74
160 TRI_2018-03-13	1.73
161 TRI_2020-08-10	1.72
162 TRI_2020-06-18	1.71
163 TRI_2020-09-30	1.71
164 TRI_2020-12-27	1.71
165 TRI_2021-06-29	1.58
166 TRI_2021-07-29	1.55
167 TRI_2018-08-12	1.51
168 TRI_2020-06-01	1.50
169 TRI_2021-08-07	1.49
170 TRI_2017-08-07	1.46
171 TRI_2018-05-31	1.43
172 TRI_2020-10-26	1.42
173 TRI_2017-06-25	1.40
174 TRI_2018-09-18	1.40
175 TRI_2017-04-13	1.38
176 TRI_2018-03-17	1.33
177 TRI_2018-01-04	1.28
178 TRI_2017-06-30	1.26
179 TRI_2020-10-18	1.26
180 TRI_2017-11-25	1.24
181 TRI_2021-03-31	1.18
182 TRI_2018-02-16	1.13
183 TRI_2020-04-22	1.12
184 TRI_2017-03-21	1.09
185 TRI_2021-05-22	1.07
186 TRI_2017-07-21	1.04
187 TRI_2017-08-02	1.03
188 TRI_2021-07-30	1.03
189 TRI_2018-09-05	1.01
190 TRI_2021-05-13	0.99
191 TRI_2017-02-20	0.98
192 TRI_2017-03-06	0.98
193 TRI_2017-09-13	0.98
194 TRI_2017-11-20	0.98
195 TRI_2018-05-14	0.98
196 TRI_2020-04-12	0.98
197 TRI_2020-08-14	0.98
198 TRI_2017-08-27	0.97
199 TRI_2021-08-06	0.97
200 TRI_2018-07-12	0.96
201 TRI_2017-03-16	0.94
202 TRI_2017-04-12	0.88
203 TRI_2018-07-28	0.87
204 TRI_2021-03-07	0.84
205 TRI_2017-03-02	0.83
206 TRI_2020-04-23	0.83
207 TRI_2021-08-05	0.83
208 TRI_2017-07-03	0.81
209 TRI_2017-05-03	0.80
210 TRI_2018-10-29	0.79
211 TRI_2018-05-08	0.78
212 TRI_2020-06-11	0.78
213 TRI_2021-06-22	0.76
214 TRI_2020-08-08	0.73
215 TRI_2017-08-18	0.71
216 TRI_2018-08-28	0.71
217 TRI_2018-10-24	0.71
218 TRI_2017-08-31	0.70
219 TRI_2018-05-13	0.70
220 TRI_2021-03-24	0.70
221 TRI_2017-12-06	0.69
222 TRI_2017-07-29	0.68
223 TRI_2018-09-17	0.67
224 TRI_2020-08-17	0.67
225 TRI_2017-06-12	0.66
226 TRI_2017-03-22	0.65
227 TRI_2018-05-07	0.65
228 TRI_2018-04-12	0.64
229 TRI_2017-05-04	0.62
230 TRI_2018-09-13	0.62
231 TRI_2021-09-23	0.62
232 TRI_2017-12-15	0.61
233 TRI_2017-06-14	0.60
234 TRI_2018-09-20	0.58
235 TRI_2017-07-11	0.57
236 TRI_2021-09-07	0.57
237 TRI_2020-01-02	0.56
238 TRI_2018-04-24	0.55
239 TRI_2020-05-11	0.54
240 TRI_2017-09-09	0.53
241 TRI_2017-04-10	0.49
242 TRI_2017-07-04	0.48
243 TRI_2018-04-25	0.47
244 TRI_2021-07-22	0.46
245 TRI_2021-02-09	0.45
246 TRI_2021-08-14	0.45
247 TRI_2017-06-24	0.44
248 TRI_2017-10-07	0.43
249 TRI_2020-07-01	0.43
250 TRI_2018-05-06	0.42
251 TRI_2018-07-19	0.42
252 TRI_2018-10-25	0.40
253 TRI_2021-09-19	0.37
254 TRI_2020-02-23	0.32
255 TRI_2017-07-27	0.31
256 TRI_2017-11-21	0.30
257 TRI_2018-03-28	0.30
258 TRI_2020-08-26	0.30
259 TRI_2021-07-10	0.29
260 TRI_2017-05-26	0.28
261 TRI_2020-05-12	0.28
262 TRI_2020-06-29	0.27
263 TRI_2021-08-12	0.25
264 TRI_2017-06-23	0.24
265 TRI_2020-07-29	0.24
266 TRI_2020-08-15	0.24
267 TRI_2021-08-29	0.24
268 TRI_2018-07-03	0.23
269 TRI_2021-07-04	0.23
270 TRI_2017-05-09	0.21
271 TRI_2018-09-03	0.20
272 TRI_2018-07-09	0.18
273 TRI_2020-07-19	0.18
274 TRI_2017-01-31	0.17
275 TRI_2021-08-13	0.13
276 TRI_2018-07-10	0.10
277 TRI_2018-06-08	0.09
278 TRI_2017-07-28	0.07
279 TRI_2018-01-29	0.06
280 TRI_2020-07-09	0.06
281 TRI_2018-07-18	0.04
282 TRI_2017-01-01	0.00
283 TRI_2017-01-02	0.00
284 TRI_2017-01-04	0.00
285 TRI_2017-01-05	0.00

Rank, NPP code, date

mSv

1 TRI_2020-12-24

80.43

57.44

36.57

29.19

29.11

25.82

23.85

22.72

22.59

22.56

22.08

20.27

19.90

19.14

18.61

17.97

17.80

17.79

17.11

13.92

13.91

13.12

13.09

12.10

11.98

11.80

11.66

11.65

11.54

11.17

11.08

11.08

10.78

10.68

10.62

10.45

10.27

10.04

9.88

9.66

9.40

9.06

8.90

8.72

8.52

8.52

8.44

8.25

8.04

8.00

7.81

7.66

7.56

7.45

7.21

6.84

6.81

6.59

6.46

6.39

6.18

5.64

5.63

5.58

5.56

5.40

5.34

5.32

5.25

5.22

5.10

5.09

4.94

4.91

4.78

4.78

4.61

4.59

4.49

4.46

4.40

4.30

4.25

4.22

4.18

4.16

4.15

3.93

3.79

3.64

3.60

3.55

3.55

3.51

3.49

3.44

3.37

3.36

3.17

3.12

3.06

3.01

2.95

2.92

2.92

2.89

2.85

2.83

2.83

2.78

2.71

2.71

2.68

2.65

2.64

2.60

2.59

2.56

2.53

2.46

2.43

2.38

2.35

2.32

2.30

2.26

2.25

2.24

2.23

2.21

2.20

2.17

2.13

2.12

2.09

2.08

2.04

2.04

2.01

1.96

1.96

1.93

1.91

1.90

1.90

1.90

1.89

1.89

1.88

1.86

1.85

1.84

1.83

1.83

1.82

1.79

1.78

1.76

1.74

1.73

1.72

1.71

1.71

1.71

1.58

1.55

1.51

1.50

1.49

1.46

1.43

1.42

1.40

1.40

1.38

1.33

1.28

1.26

1.26

1.24

1.18

1.13

1.12

1.09

1.07

1.04

1.03

1.03

1.01

0.99

0.98

0.98

0.98

0.98

0.98

0.98

0.98

0.97

0.97

0.96

0.94

0.88

0.87

0.84

0.83

0.83

0.83

0.81

0.80

0.79

0.78

0.78

0.76

0.73

0.71

0.71

0.71

0.70

0.70

0.70

0.69

0.68

0.67

0.67

0.66

0.65

0.65

0.64

0.62

0.62

0.62

0.61

0.60

0.58

0.57

0.57

0.56

0.55

0.54

0.53

0.49

0.48

0.47

0.46

0.45

0.45

0.44

0.43

0.43

0.42

0.42

0.40

0.37

0.32

0.31

0.30

0.30

0.30

0.29

0.28

0.28

0.27

0.25

0.24

0.24

0.24

0.24

0.23

0.23

0.21

0.20

0.18

0.18

0.17

0.13

0.10

0.09

0.07

0.06

0.06

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 :

Pinerolo (215 km) ITA

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)