Simulation of a nuclear major accident at the Tricastin NPP

Rank, NPP code, date	mSv
1 TRI_2021-11-27	93.99
2 TRI_2021-12-28	44.74
3 TRI_2020-05-05	41.96
4 TRI_2020-08-28	41.34
5 TRI_2017-06-29	39.92
6 TRI_2017-04-21	34.71
7 TRI_2017-06-30	34.14
8 TRI_2021-10-21	34.01
9 TRI_2017-11-08	21.45
10 TRI_2020-01-03	20.07
11 TRI_2017-03-05	19.66
12 TRI_2021-02-15	19.38
13 TRI_2021-03-25	19.19
14 TRI_2020-04-30	17.66
15 TRI_2017-04-26	16.44
16 TRI_2017-02-05	16.38
17 TRI_2017-03-22	15.66
18 TRI_2020-04-01	15.60
19 TRI_2020-12-21	15.58
20 TRI_2018-01-30	14.62
21 TRI_2020-10-31	14.18
22 TRI_2020-12-24	14.14
23 TRI_2017-02-03	13.61
24 TRI_2021-02-01	13.57
25 TRI_2017-04-13	12.09
26 TRI_2017-04-09	11.78
27 TRI_2020-01-28	11.61
28 TRI_2020-07-21	11.52
29 TRI_2017-02-23	11.34
30 TRI_2021-06-24	11.24
31 TRI_2020-10-05	11.20
32 TRI_2021-05-24	11.17
33 TRI_2017-03-16	10.46
34 TRI_2017-05-04	9.78
35 TRI_2020-09-05	9.72
36 TRI_2020-04-24	9.42
37 TRI_2017-12-05	9.27
38 TRI_2020-05-15	8.42
39 TRI_2017-06-11	8.39
40 TRI_2020-02-10	8.36
41 TRI_2017-07-11	8.16
42 TRI_2020-04-26	7.69
43 TRI_2021-08-21	7.42
44 TRI_2017-05-19	7.29
45 TRI_2021-04-08	7.25
46 TRI_2020-03-01	7.19
47 TRI_2020-09-24	6.83
48 TRI_2017-12-24	6.70
49 TRI_2020-05-12	6.66
50 TRI_2020-02-23	6.62
51 TRI_2020-06-13	6.50
52 TRI_2021-07-27	6.45
53 TRI_2021-05-11	6.35
54 TRI_2017-06-09	6.02
55 TRI_2020-10-06	6.02
56 TRI_2020-01-30	6.01
57 TRI_2020-07-30	5.96
58 TRI_2017-03-06	5.86
59 TRI_2021-05-16	5.85
60 TRI_2021-06-23	5.73
61 TRI_2020-08-09	5.66
62 TRI_2018-05-14	5.58
63 TRI_2020-06-06	5.53
64 TRI_2021-02-14	5.49
65 TRI_2020-08-10	5.16
66 TRI_2017-06-06	5.12
67 TRI_2020-02-13	5.12
68 TRI_2020-05-04	5.11
69 TRI_2017-02-19	4.87
70 TRI_2020-07-10	4.85
71 TRI_2018-03-14	4.62
72 TRI_2020-08-16	3.98
73 TRI_2017-04-23	3.92
74 TRI_2020-06-04	3.92
75 TRI_2018-06-01	3.80
76 TRI_2017-03-19	3.78
77 TRI_2017-04-12	3.76
78 TRI_2020-12-06	3.75
79 TRI_2021-08-07	3.75
80 TRI_2020-12-20	3.69
81 TRI_2020-06-27	3.61
82 TRI_2017-06-23	3.60
83 TRI_2018-08-29	3.54
84 TRI_2020-05-01	3.54
85 TRI_2020-09-30	3.51
86 TRI_2017-06-28	3.50
87 TRI_2021-12-10	3.41
88 TRI_2020-09-23	3.40
89 TRI_2017-06-12	3.38
90 TRI_2020-03-12	3.35
91 TRI_2017-05-06	3.30
92 TRI_2021-03-04	3.27
93 TRI_2020-07-27	3.22
94 TRI_2017-06-20	3.21
95 TRI_2017-10-08	3.21
96 TRI_2020-08-26	3.21
97 TRI_2017-06-04	3.19
98 TRI_2017-06-22	3.19
99 TRI_2017-11-05	3.13
100 TRI_2018-06-11	3.13
101 TRI_2020-11-18	3.13
102 TRI_2017-12-12	3.09
103 TRI_2020-01-12	3.09
104 TRI_2021-02-09	3.07
105 TRI_2020-05-22	2.94
106 TRI_2021-05-05	2.93
107 TRI_2018-05-15	2.89
108 TRI_2021-11-02	2.80
109 TRI_2020-01-10	2.75
110 TRI_2017-05-03	2.72
111 TRI_2021-04-30	2.68
112 TRI_2017-02-21	2.66
113 TRI_2021-08-15	2.66
114 TRI_2017-06-24	2.61
115 TRI_2021-01-04	2.49
116 TRI_2021-06-22	2.46
117 TRI_2017-12-23	2.45
118 TRI_2018-09-21	2.45
119 TRI_2020-07-20	2.43
120 TRI_2018-03-17	2.40
121 TRI_2020-02-15	2.38
122 TRI_2020-06-02	2.37
123 TRI_2017-05-22	2.31
124 TRI_2021-07-14	2.28
125 TRI_2021-12-27	2.27
126 TRI_2020-06-11	2.21
127 TRI_2017-04-22	2.19
128 TRI_2021-08-03	2.16
129 TRI_2020-01-26	2.11
130 TRI_2017-06-08	2.10
131 TRI_2021-02-17	2.08
132 TRI_2018-10-25	2.07
133 TRI_2018-07-02	2.06
134 TRI_2017-06-13	2.04
135 TRI_2020-02-14	2.01
136 TRI_2020-10-18	1.94
137 TRI_2017-10-07	1.91
138 TRI_2018-09-05	1.89
139 TRI_2021-12-25	1.89
140 TRI_2021-02-16	1.88
141 TRI_2021-02-08	1.86
142 TRI_2021-08-06	1.86
143 TRI_2021-05-08	1.84
144 TRI_2020-06-01	1.83
145 TRI_2018-07-27	1.82
146 TRI_2020-07-08	1.80
147 TRI_2021-03-31	1.78
148 TRI_2021-05-13	1.77
149 TRI_2018-03-02	1.76
150 TRI_2020-04-23	1.65
151 TRI_2020-12-07	1.65
152 TRI_2017-01-12	1.64
153 TRI_2020-07-31	1.63
154 TRI_2021-07-02	1.63
155 TRI_2020-06-09	1.62
156 TRI_2017-11-19	1.60
157 TRI_2021-03-24	1.57
158 TRI_2021-11-01	1.56
159 TRI_2018-06-30	1.48
160 TRI_2018-06-08	1.47
161 TRI_2017-02-20	1.45
162 TRI_2021-09-17	1.45
163 TRI_2018-08-31	1.44
164 TRI_2018-07-14	1.40
165 TRI_2018-07-12	1.37
166 TRI_2020-10-04	1.36
167 TRI_2018-09-13	1.33
168 TRI_2018-03-29	1.32
169 TRI_2020-08-19	1.28
170 TRI_2018-08-06	1.27
171 TRI_2017-03-21	1.24
172 TRI_2020-12-27	1.24
173 TRI_2020-05-23	1.23
174 TRI_2020-01-02	1.22
175 TRI_2018-05-13	1.21
176 TRI_2018-10-24	1.18
177 TRI_2020-01-06	1.18
178 TRI_2017-09-14	1.16
179 TRI_2021-08-30	1.14
180 TRI_2018-02-01	1.13
181 TRI_2017-03-18	1.12
182 TRI_2020-02-27	1.11
183 TRI_2018-03-13	1.10
184 TRI_2020-01-01	1.10
185 TRI_2021-07-30	1.10
186 TRI_2017-10-25	1.09
187 TRI_2020-08-15	1.09
188 TRI_2018-10-29	1.08
189 TRI_2021-05-06	1.07
190 TRI_2018-07-08	1.06
191 TRI_2018-07-20	1.06
192 TRI_2020-06-28	1.06
193 TRI_2017-06-05	1.05
194 TRI_2021-05-07	1.05
195 TRI_2017-05-09	1.04
196 TRI_2017-07-07	1.04
197 TRI_2020-08-31	1.04
198 TRI_2021-08-16	1.02
199 TRI_2021-07-03	1.00
200 TRI_2021-08-13	0.99
201 TRI_2017-07-23	0.97
202 TRI_2018-06-29	0.97
203 TRI_2020-07-25	0.94
204 TRI_2020-10-23	0.94
205 TRI_2021-07-13	0.94
206 TRI_2017-06-03	0.92
207 TRI_2021-09-18	0.92
208 TRI_2021-06-29	0.91
209 TRI_2017-08-18	0.88
210 TRI_2018-01-29	0.88
211 TRI_2020-08-18	0.87
212 TRI_2018-06-07	0.86
213 TRI_2020-01-13	0.86
214 TRI_2020-07-19	0.86
215 TRI_2020-04-12	0.84
216 TRI_2017-06-21	0.83
217 TRI_2017-06-25	0.80
218 TRI_2017-11-20	0.79
219 TRI_2021-10-04	0.78
220 TRI_2017-08-07	0.77
221 TRI_2018-09-12	0.76
222 TRI_2020-07-29	0.76
223 TRI_2021-06-26	0.76
224 TRI_2021-02-07	0.75
225 TRI_2020-12-28	0.74
226 TRI_2017-07-04	0.73
227 TRI_2018-09-03	0.73
228 TRI_2021-05-22	0.73
229 TRI_2018-02-27	0.72
230 TRI_2021-07-11	0.69
231 TRI_2021-09-12	0.69
232 TRI_2020-08-14	0.68
233 TRI_2021-08-20	0.68
234 TRI_2021-05-26	0.67
235 TRI_2021-07-19	0.67
236 TRI_2017-08-31	0.63
237 TRI_2018-03-28	0.63
238 TRI_2017-03-02	0.61
239 TRI_2017-08-27	0.61
240 TRI_2017-10-02	0.61
241 TRI_2020-07-01	0.61
242 TRI_2021-09-19	0.61
243 TRI_2020-06-07	0.59
244 TRI_2021-07-29	0.59
245 TRI_2017-04-28	0.57
246 TRI_2021-09-26	0.55
247 TRI_2018-07-09	0.54
248 TRI_2017-12-14	0.53
249 TRI_2020-10-28	0.52
250 TRI_2021-08-12	0.52
251 TRI_2017-05-21	0.51
252 TRI_2018-07-19	0.51
253 TRI_2021-08-14	0.51
254 TRI_2017-05-02	0.50
255 TRI_2017-07-28	0.50
256 TRI_2018-03-24	0.50
257 TRI_2021-03-07	0.49
258 TRI_2018-10-28	0.47
259 TRI_2017-03-17	0.46
260 TRI_2021-07-05	0.46
261 TRI_2017-09-20	0.45
262 TRI_2018-09-17	0.44
263 TRI_2021-07-07	0.44
264 TRI_2017-07-21	0.41
265 TRI_2017-08-28	0.39
266 TRI_2021-03-11	0.38
267 TRI_2018-07-28	0.37
268 TRI_2018-08-28	0.37
269 TRI_2021-08-29	0.37
270 TRI_2017-09-09	0.36
271 TRI_2017-09-13	0.36
272 TRI_2021-04-24	0.36
273 TRI_2018-01-04	0.35
274 TRI_2020-07-28	0.34
275 TRI_2018-03-06	0.33
276 TRI_2018-07-10	0.31
277 TRI_2018-07-03	0.30
278 TRI_2020-04-25	0.28
279 TRI_2021-08-05	0.26
280 TRI_2020-08-13	0.25
281 TRI_2017-01-31	0.24
282 TRI_2017-08-23	0.24
283 TRI_2017-09-08	0.24
284 TRI_2017-07-03	0.23
285 TRI_2020-07-09	0.23
286 TRI_2020-08-17	0.23
287 TRI_2021-07-09	0.23
288 TRI_2020-06-18	0.22
289 TRI_2021-03-06	0.21
290 TRI_2018-04-24	0.20
291 TRI_2018-06-20	0.20
292 TRI_2017-06-14	0.19
293 TRI_2018-02-14	0.19
294 TRI_2021-05-04	0.19
295 TRI_2017-08-13	0.17
296 TRI_2021-07-10	0.16
297 TRI_2021-02-25	0.15
298 TRI_2021-05-25	0.14
299 TRI_2021-08-04	0.14
300 TRI_2017-08-09	0.12
301 TRI_2018-04-23	0.12
302 TRI_2018-12-02	0.10
303 TRI_2020-08-08	0.10
304 TRI_2018-03-03	0.05
305 TRI_2017-06-02	0.04
306 TRI_2017-01-01	0.00
307 TRI_2017-01-02	0.00
308 TRI_2017-01-03	0.00
309 TRI_2017-01-04	0.00

Rank, NPP code, date

mSv

1 TRI_2021-11-27

93.99

44.74

41.96

41.34

39.92

34.71

34.14

34.01

21.45

20.07

19.66

19.38

19.19

17.66

16.44

16.38

15.66

15.60

15.58

14.62

14.18

14.14

13.61

13.57

12.09

11.78

11.61

11.52

11.34

11.24

11.20

11.17

10.46

9.78

9.72

9.42

9.27

8.42

8.39

8.36

8.16

7.69

7.42

7.29

7.25

7.19

6.83

6.70

6.66

6.62

6.50

6.45

6.35

6.02

6.02

6.01

5.96

5.86

5.85

5.73

5.66

5.58

5.53

5.49

5.16

5.12

5.12

5.11

4.87

4.85

4.62

3.98

3.92

3.92

3.80

3.78

3.76

3.75

3.75

3.69

3.61

3.60

3.54

3.54

3.51

3.50

3.41

3.40

3.38

3.35

3.30

3.27

3.22

3.21

3.21

3.21

3.19

3.19

3.13

3.13

3.13

3.09

3.09

3.07

2.94

2.93

2.89

2.80

2.75

2.72

2.68

2.66

2.66

2.61

2.49

2.46

2.45

2.45

2.43

2.40

2.38

2.37

2.31

2.28

2.27

2.21

2.19

2.16

2.11

2.10

2.08

2.07

2.06

2.04

2.01

1.94

1.91

1.89

1.89

1.88

1.86

1.86

1.84

1.83

1.82

1.80

1.78

1.77

1.76

1.65

1.65

1.64

1.63

1.63

1.62

1.60

1.57

1.56

1.48

1.47

1.45

1.45

1.44

1.40

1.37

1.36

1.33

1.32

1.28

1.27

1.24

1.24

1.23

1.22

1.21

1.18

1.18

1.16

1.14

1.13

1.12

1.11

1.10

1.10

1.10

1.09

1.09

1.08

1.07

1.06

1.06

1.06

1.05

1.05

1.04

1.04

1.04

1.02

1.00

0.99

0.97

0.97

0.94

0.94

0.94

0.92

0.92

0.91

0.88

0.88

0.87

0.86

0.86

0.86

0.84

0.83

0.80

0.79

0.78

0.77

0.76

0.76

0.76

0.75

0.74

0.73

0.73

0.73

0.72

0.69

0.69

0.68

0.68

0.67

0.67

0.63

0.63

0.61

0.61

0.61

0.61

0.61

0.59

0.59

0.57

0.55

0.54

0.53

0.52

0.52

0.51

0.51

0.51

0.50

0.50

0.50

0.49

0.47

0.46

0.46

0.45

0.44

0.44

0.41

0.39

0.38

0.37

0.37

0.37

0.36

0.36

0.36

0.35

0.34

0.33

0.31

0.30

0.28

0.26

0.25

0.24

0.24

0.24

0.23

0.23

0.23

0.23

0.22

0.21

0.20

0.20

0.19

0.19

0.19

0.17

0.16

0.15

0.14

0.14

0.12

0.12

0.10

0.10

0.05

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 :

Torino (247 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)