Simulation of a nuclear major accident at the Tricastin NPP

Rank, NPP code, date	mSv
1 TRI_2017-03-22	81.67
2 TRI_2017-04-26	72.47
3 TRI_2017-05-03	69.15
4 TRI_2020-12-24	58.27
5 TRI_2021-02-01	55.83
6 TRI_2021-03-11	52.18
7 TRI_2021-08-15	51.48
8 TRI_2020-10-05	44.06
9 TRI_2017-02-03	43.55
10 TRI_2020-04-24	39.58
11 TRI_2021-02-14	34.40
12 TRI_2021-02-09	28.82
13 TRI_2021-12-28	27.97
14 TRI_2020-07-27	22.16
15 TRI_2017-06-11	20.86
16 TRI_2021-06-24	19.94
17 TRI_2020-10-31	19.24
18 TRI_2020-02-27	19.23
19 TRI_2017-04-23	18.30
20 TRI_2020-06-06	17.94
21 TRI_2020-04-26	17.40
22 TRI_2017-06-05	16.29
23 TRI_2021-01-19	15.87
24 TRI_2020-07-20	15.84
25 TRI_2021-04-08	15.64
26 TRI_2020-05-22	15.43
27 TRI_2021-06-29	15.35
28 TRI_2017-03-06	15.33
29 TRI_2017-03-05	15.12
30 TRI_2017-06-04	15.01
31 TRI_2017-04-22	14.97
32 TRI_2020-08-09	14.68
33 TRI_2017-07-11	14.61
34 TRI_2017-05-09	14.31
35 TRI_2021-02-15	12.97
36 TRI_2020-05-11	12.72
37 TRI_2020-07-10	11.73
38 TRI_2020-01-12	11.67
39 TRI_2021-04-27	11.65
40 TRI_2020-06-02	11.02
41 TRI_2020-02-15	10.73
42 TRI_2020-04-23	10.23
43 TRI_2020-05-01	10.23
44 TRI_2021-08-03	10.23
45 TRI_2017-06-08	10.10
46 TRI_2017-02-20	10.01
47 TRI_2021-05-06	9.89
48 TRI_2017-05-02	9.27
49 TRI_2020-06-28	9.03
50 TRI_2020-04-25	8.89
51 TRI_2021-05-15	8.86
52 TRI_2021-06-22	8.85
53 TRI_2021-05-05	8.84
54 TRI_2017-06-20	8.54
55 TRI_2020-12-21	8.30
56 TRI_2020-09-21	7.83
57 TRI_2020-09-23	7.76
58 TRI_2021-10-21	7.59
59 TRI_2021-08-13	7.40
60 TRI_2017-05-05	7.23
61 TRI_2020-02-10	7.13
62 TRI_2020-05-15	6.87
63 TRI_2018-08-13	6.77
64 TRI_2018-09-21	6.23
65 TRI_2021-07-29	6.19
66 TRI_2020-05-05	6.03
67 TRI_2020-05-30	5.96
68 TRI_2018-03-12	5.93
69 TRI_2020-06-04	5.91
70 TRI_2020-01-13	5.88
71 TRI_2020-01-26	5.88
72 TRI_2020-07-29	5.84
73 TRI_2020-05-23	5.61
74 TRI_2020-03-01	5.53
75 TRI_2021-08-06	5.48
76 TRI_2020-08-02	5.47
77 TRI_2017-05-19	5.30
78 TRI_2020-12-31	5.06
79 TRI_2021-05-08	5.02
80 TRI_2020-11-01	4.99
81 TRI_2017-12-30	4.90
82 TRI_2020-01-28	4.87
83 TRI_2018-06-01	4.77
84 TRI_2017-01-12	4.72
85 TRI_2018-07-27	4.63
86 TRI_2021-11-02	4.58
87 TRI_2021-08-21	4.51
88 TRI_2020-10-18	4.49
89 TRI_2017-01-03	4.45
90 TRI_2020-12-12	4.22
91 TRI_2018-03-14	4.21
92 TRI_2020-02-23	4.21
93 TRI_2020-08-19	4.20
94 TRI_2020-02-14	4.17
95 TRI_2017-10-07	4.15
96 TRI_2020-05-12	4.13
97 TRI_2018-05-15	4.04
98 TRI_2020-07-08	3.99
99 TRI_2020-07-21	3.93
100 TRI_2020-08-10	3.91
101 TRI_2021-02-07	3.78
102 TRI_2021-04-04	3.73
103 TRI_2018-01-30	3.61
104 TRI_2021-08-12	3.52
105 TRI_2021-08-05	3.51
106 TRI_2017-06-06	3.49
107 TRI_2021-11-27	3.42
108 TRI_2021-03-24	3.40
109 TRI_2020-07-22	3.35
110 TRI_2017-10-08	3.32
111 TRI_2020-06-09	3.31
112 TRI_2018-03-03	3.29
113 TRI_2020-05-04	3.24
114 TRI_2017-12-12	3.23
115 TRI_2018-09-06	3.20
116 TRI_2021-05-16	3.05
117 TRI_2020-01-02	3.04
118 TRI_2020-01-03	3.01
119 TRI_2017-02-25	2.98
120 TRI_2017-08-23	2.98
121 TRI_2017-12-14	2.97
122 TRI_2021-10-04	2.97
123 TRI_2020-07-13	2.95
124 TRI_2020-08-15	2.95
125 TRI_2020-10-06	2.93
126 TRI_2020-04-01	2.88
127 TRI_2017-11-08	2.86
128 TRI_2018-08-29	2.83
129 TRI_2018-01-03	2.80
130 TRI_2017-07-07	2.78
131 TRI_2018-06-11	2.77
132 TRI_2017-06-12	2.74
133 TRI_2017-03-02	2.72
134 TRI_2017-06-21	2.69
135 TRI_2018-03-17	2.67
136 TRI_2018-02-01	2.65
137 TRI_2021-12-01	2.59
138 TRI_2017-07-03	2.56
139 TRI_2018-10-28	2.55
140 TRI_2020-12-05	2.55
141 TRI_2018-02-16	2.50
142 TRI_2020-02-28	2.46
143 TRI_2020-02-13	2.43
144 TRI_2021-07-25	2.42
145 TRI_2020-07-30	2.33
146 TRI_2021-05-11	2.33
147 TRI_2020-09-30	2.30
148 TRI_2020-03-28	2.26
149 TRI_2017-03-19	2.18
150 TRI_2020-06-01	2.10
151 TRI_2018-07-19	2.09
152 TRI_2021-02-08	2.09
153 TRI_2020-08-18	2.07
154 TRI_2017-04-21	2.04
155 TRI_2021-11-03	1.99
156 TRI_2020-01-01	1.96
157 TRI_2020-08-28	1.95
158 TRI_2017-03-16	1.89
159 TRI_2017-04-13	1.87
160 TRI_2021-06-26	1.86
161 TRI_2017-06-22	1.81
162 TRI_2018-08-31	1.79
163 TRI_2017-03-15	1.74
164 TRI_2021-04-30	1.69
165 TRI_2017-04-07	1.68
166 TRI_2017-04-09	1.67
167 TRI_2021-02-17	1.65
168 TRI_2020-09-24	1.64
169 TRI_2018-08-12	1.62
170 TRI_2017-04-28	1.61
171 TRI_2021-04-01	1.58
172 TRI_2021-09-18	1.56
173 TRI_2021-11-01	1.56
174 TRI_2021-09-19	1.49
175 TRI_2017-09-09	1.48
176 TRI_2017-06-13	1.47
177 TRI_2017-06-25	1.47
178 TRI_2018-06-30	1.47
179 TRI_2020-09-20	1.46
180 TRI_2018-09-20	1.44
181 TRI_2020-04-30	1.41
182 TRI_2017-06-28	1.39
183 TRI_2017-12-08	1.39
184 TRI_2021-05-13	1.39
185 TRI_2018-07-09	1.37
186 TRI_2020-09-28	1.37
187 TRI_2017-12-15	1.35
188 TRI_2018-06-08	1.35
189 TRI_2020-08-08	1.35
190 TRI_2017-09-06	1.34
191 TRI_2018-04-25	1.34
192 TRI_2018-01-18	1.32
193 TRI_2017-03-18	1.29
194 TRI_2021-09-23	1.29
195 TRI_2020-02-06	1.22
196 TRI_2020-06-18	1.20
197 TRI_2018-07-28	1.19
198 TRI_2017-03-17	1.18
199 TRI_2021-06-23	1.18
200 TRI_2021-07-03	1.17
201 TRI_2017-08-27	1.16
202 TRI_2017-05-06	1.13
203 TRI_2020-07-26	1.10
204 TRI_2018-05-11	1.08
205 TRI_2018-10-27	1.08
206 TRI_2018-07-03	1.07
207 TRI_2021-05-31	1.07
208 TRI_2020-07-19	1.05
209 TRI_2021-07-22	1.05
210 TRI_2018-07-12	1.04
211 TRI_2021-07-05	1.00
212 TRI_2021-09-06	0.98
213 TRI_2017-03-21	0.96
214 TRI_2017-11-05	0.93
215 TRI_2021-05-30	0.92
216 TRI_2018-05-08	0.91
217 TRI_2018-09-18	0.90
218 TRI_2017-06-24	0.89
219 TRI_2021-08-14	0.86
220 TRI_2020-06-07	0.83
221 TRI_2020-06-30	0.83
222 TRI_2021-03-07	0.81
223 TRI_2020-09-05	0.80
224 TRI_2017-06-29	0.79
225 TRI_2017-10-11	0.78
226 TRI_2018-12-13	0.75
227 TRI_2017-07-04	0.74
228 TRI_2018-09-03	0.72
229 TRI_2018-06-27	0.71
230 TRI_2020-06-13	0.71
231 TRI_2020-07-31	0.71
232 TRI_2020-08-01	0.70
233 TRI_2021-08-30	0.69
234 TRI_2017-08-07	0.68
235 TRI_2021-07-26	0.67
236 TRI_2017-04-12	0.66
237 TRI_2021-05-04	0.66
238 TRI_2017-12-05	0.59
239 TRI_2017-12-06	0.59
240 TRI_2020-07-01	0.58
241 TRI_2021-07-28	0.58
242 TRI_2021-12-22	0.56
243 TRI_2017-08-13	0.54
244 TRI_2020-05-21	0.54
245 TRI_2017-08-22	0.52
246 TRI_2017-07-27	0.51
247 TRI_2018-05-06	0.50
248 TRI_2021-07-14	0.48
249 TRI_2021-08-07	0.48
250 TRI_2020-07-25	0.46
251 TRI_2020-08-31	0.45
252 TRI_2021-08-16	0.45
253 TRI_2018-09-12	0.44
254 TRI_2017-08-08	0.41
255 TRI_2018-04-12	0.41
256 TRI_2020-03-12	0.41
257 TRI_2020-08-17	0.41
258 TRI_2021-07-10	0.40
259 TRI_2020-04-12	0.39
260 TRI_2018-02-08	0.38
261 TRI_2017-12-31	0.37
262 TRI_2021-03-25	0.36
263 TRI_2018-07-08	0.35
264 TRI_2018-03-29	0.34
265 TRI_2017-10-04	0.33
266 TRI_2017-06-14	0.30
267 TRI_2017-09-14	0.29
268 TRI_2017-12-24	0.29
269 TRI_2021-09-26	0.29
270 TRI_2018-04-26	0.28
271 TRI_2017-08-31	0.27
272 TRI_2017-06-02	0.25
273 TRI_2018-05-02	0.25
274 TRI_2018-07-14	0.25
275 TRI_2020-12-20	0.25
276 TRI_2017-10-25	0.24
277 TRI_2021-05-22	0.24
278 TRI_2017-02-15	0.23
279 TRI_2021-05-07	0.22
280 TRI_2021-07-21	0.20
281 TRI_2017-05-04	0.18
282 TRI_2017-06-19	0.18
283 TRI_2017-02-16	0.17
284 TRI_2018-06-20	0.17
285 TRI_2018-07-26	0.17
286 TRI_2021-05-26	0.17
287 TRI_2017-07-21	0.15
288 TRI_2018-09-13	0.15
289 TRI_2021-09-12	0.15
290 TRI_2017-06-30	0.14
291 TRI_2021-03-27	0.13
292 TRI_2018-12-16	0.09
293 TRI_2021-07-04	0.06
294 TRI_2018-10-24	0.04
295 TRI_2017-01-01	0.00
296 TRI_2017-01-02	0.00
297 TRI_2017-01-04	0.00
298 TRI_2017-01-05	0.00

Rank, NPP code, date

mSv

1 TRI_2017-03-22

81.67

72.47

69.15

58.27

55.83

52.18

51.48

44.06

43.55

39.58

34.40

28.82

27.97

22.16

20.86

19.94

19.24

19.23

18.30

17.94

17.40

16.29

15.87

15.84

15.64

15.43

15.35

15.33

15.12

15.01

14.97

14.68

14.61

14.31

12.97

12.72

11.73

11.67

11.65

11.02

10.73

10.23

10.23

10.23

10.10

10.01

9.89

9.27

9.03

8.89

8.86

8.85

8.84

8.54

8.30

7.83

7.76

7.59

7.40

7.23

7.13

6.87

6.77

6.23

6.19

6.03

5.96

5.93

5.91

5.88

5.88

5.84

5.61

5.53

5.48

5.47

5.30

5.06

5.02

4.99

4.90

4.87

4.77

4.72

4.63

4.58

4.51

4.49

4.45

4.22

4.21

4.21

4.20

4.17

4.15

4.13

4.04

3.99

3.93

3.91

3.78

3.73

3.61

3.52

3.51

3.49

3.42

3.40

3.35

3.32

3.31

3.29

3.24

3.23

3.20

3.05

3.04

3.01

2.98

2.98

2.97

2.97

2.95

2.95

2.93

2.88

2.86

2.83

2.80

2.78

2.77

2.74

2.72

2.69

2.67

2.65

2.59

2.56

2.55

2.55

2.50

2.46

2.43

2.42

2.33

2.33

2.30

2.26

2.18

2.10

2.09

2.09

2.07

2.04

1.99

1.96

1.95

1.89

1.87

1.86

1.81

1.79

1.74

1.69

1.68

1.67

1.65

1.64

1.62

1.61

1.58

1.56

1.56

1.49

1.48

1.47

1.47

1.47

1.46

1.44

1.41

1.39

1.39

1.39

1.37

1.37

1.35

1.35

1.35

1.34

1.34

1.32

1.29

1.29

1.22

1.20

1.19

1.18

1.18

1.17

1.16

1.13

1.10

1.08

1.08

1.07

1.07

1.05

1.05

1.04

1.00

0.98

0.96

0.93

0.92

0.91

0.90

0.89

0.86

0.83

0.83

0.81

0.80

0.79

0.78

0.75

0.74

0.72

0.71

0.71

0.71

0.70

0.69

0.68

0.67

0.66

0.66

0.59

0.59

0.58

0.58

0.56

0.54

0.54

0.52

0.51

0.50

0.48

0.48

0.46

0.45

0.45

0.44

0.41

0.41

0.41

0.41

0.40

0.39

0.38

0.37

0.36

0.35

0.34

0.33

0.30

0.29

0.29

0.29

0.28

0.27

0.25

0.25

0.25

0.25

0.24

0.24

0.23

0.22

0.20

0.18

0.18

0.17

0.17

0.17

0.17

0.15

0.15

0.15

0.14

0.13

0.09

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 :

Cuneo (225 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)