Symbol of the Biosphere, the logo of the Biosphere Institute was designed to acknowledge that humans belong to this singular organism.
List of data         Methodology         Legal limit for radiation dose

Major accident in one of the four reactors of Tricastin NPP (4 × 2785 MWth)

Possible impact on the inhabitants of :

St-Maurice d'Ardèche →NW (33 km) FRA

Maps of Individual committed effective doses received by inhabitants during the passage of the radioactive cloud (inhalation):
1° Each row of the table represents a different meteorological situation.
2° The hyperlink enables access to the related map.
Maps visible with free Google Earth software! Alternatively, after downloading a map file in KML format, go to google.com/earth/, launch Google Earth, click on "project" then on "open"!
Rank, NPP code, date mSv
1        TRI_2017-01-29 974.59
2        TRI_2017-12-30 783.04
3        TRI_2017-11-28 705.80
4        TRI_2017-03-02 705.54
5        TRI_2018-12-19 620.27
6        TRI_2018-01-14 597.46
7        TRI_2017-12-14 540.17
8        TRI_2020-12-18 468.37
9        TRI_2018-02-15 441.94
10        TRI_2018-01-04 403.83
11        TRI_2020-12-08 378.69
12        TRI_2018-01-06 321.93
13        TRI_2021-04-30 260.24
14        TRI_2020-05-11 221.23
15        TRI_2018-03-04 215.37
16        TRI_2018-12-09 210.08
17        TRI_2017-06-14 203.29
18        TRI_2020-08-11 149.97
19        TRI_2018-01-03 148.63
20        TRI_2018-02-06 140.07
21        TRI_2018-06-05 137.95
22        TRI_2020-05-01 130.07
23        TRI_2018-10-11 123.53
24        TRI_2020-09-22 114.62
25        TRI_2018-11-01 114.54
26        TRI_2018-03-15 102.31
27        TRI_2021-05-15 97.04
28        TRI_2021-05-11 96.66
29        TRI_2017-04-26 94.32
30        TRI_2018-01-05 91.19
31        TRI_2021-12-25 86.99
32        TRI_2020-11-08 85.82
33        TRI_2018-03-24 85.41
34        TRI_2018-11-23 84.76
35        TRI_2018-05-07 82.01
36        TRI_2018-09-09 80.25
37        TRI_2018-12-16 77.53
38        TRI_2020-10-23 76.52
39        TRI_2017-02-10 73.69
40        TRI_2017-12-01 71.57
41        TRI_2018-06-09 69.62
42        TRI_2017-06-11 69.36
43        TRI_2018-06-06 68.79
44        TRI_2018-04-12 66.69
45        TRI_2018-11-30 66.17
46        TRI_2018-05-24 65.42
47        TRI_2017-03-16 64.88
48        TRI_2018-05-31 63.56
49        TRI_2018-11-15 63.48
50        TRI_2017-12-07 62.96
51        TRI_2020-01-26 58.42
52        TRI_2018-06-07 57.70
53        TRI_2018-11-17 55.96
54        TRI_2020-11-12 54.10
55        TRI_2017-12-12 52.67
56        TRI_2018-04-06 52.62
57        TRI_2017-03-26 51.14
58        TRI_2018-05-29 50.70
59        TRI_2018-09-30 50.60
60        TRI_2018-04-11 50.00
61        TRI_2020-06-24 45.49
62        TRI_2018-10-05 45.05
63        TRI_2018-01-10 44.48
64        TRI_2020-08-10 44.45
65        TRI_2018-10-10 43.99
66        TRI_2017-06-13 43.29
67        TRI_2020-08-09 42.87
68        TRI_2017-08-02 42.72
69        TRI_2018-09-16 42.53
70        TRI_2017-08-29 42.15
71        TRI_2017-06-01 41.16
72        TRI_2018-05-27 38.49
73        TRI_2018-03-08 35.87
74        TRI_2020-09-15 34.89
75        TRI_2018-11-20 34.16
76        TRI_2017-01-02 32.81
77        TRI_2018-04-20 32.32
78        TRI_2018-04-19 31.93
79        TRI_2017-02-15 31.86
80        TRI_2020-05-31 31.36
81        TRI_2018-01-18 30.97
82        TRI_2020-04-23 30.74
83        TRI_2018-06-29 30.51
84        TRI_2018-06-04 30.33
85        TRI_2020-01-16 30.20
86        TRI_2017-07-22 29.45
87        TRI_2020-04-22 29.24
88        TRI_2020-12-31 29.00
89        TRI_2017-09-30 27.73
90        TRI_2020-08-13 26.98
91        TRI_2017-07-04 26.49
92        TRI_2017-04-24 26.08
93        TRI_2020-09-20 25.66
94        TRI_2017-08-27 25.26
95        TRI_2020-04-18 25.10
96        TRI_2020-04-13 23.81
97        TRI_2018-11-13 23.80
98        TRI_2020-09-14 23.68
99        TRI_2021-06-27 23.65
100        TRI_2017-01-03 22.99
101        TRI_2017-11-01 22.81
102        TRI_2018-07-20 22.49
103        TRI_2020-10-09 22.47
104        TRI_2018-06-11 22.29
105        TRI_2017-04-01 22.26
106        TRI_2020-01-06 22.05
107        TRI_2021-02-08 21.70
108        TRI_2020-12-17 21.48
109        TRI_2020-12-07 21.40
110        TRI_2018-04-14 21.30
111        TRI_2021-06-21 20.41
112        TRI_2018-04-27 19.72
113        TRI_2021-09-26 19.67
114        TRI_2018-07-04 19.59
115        TRI_2018-09-10 19.42
116        TRI_2017-08-14 19.10
117        TRI_2017-09-27 18.97
118        TRI_2020-09-04 18.65
119        TRI_2020-08-07 18.26
120        TRI_2018-04-13 18.06
121        TRI_2017-08-18 17.98
122        TRI_2018-01-09 17.76
123        TRI_2018-05-21 17.61
124        TRI_2020-04-19 17.53
125        TRI_2017-05-10 17.39
126        TRI_2020-03-23 17.02
127        TRI_2018-03-03 16.89
128        TRI_2018-05-26 16.77
129        TRI_2017-05-12 16.74
130        TRI_2021-04-26 16.69
131        TRI_2018-07-27 16.38
132        TRI_2018-09-28 16.31
133        TRI_2020-04-15 15.91
134        TRI_2018-09-05 15.74
135        TRI_2017-03-30 15.65
136        TRI_2018-06-02 15.46
137        TRI_2018-04-21 15.31
138        TRI_2021-10-01 14.82
139        TRI_2018-06-20 14.64
140        TRI_2020-11-09 14.25
141        TRI_2021-03-01 14.13
142        TRI_2017-10-13 13.78
143        TRI_2018-08-16 13.70
144        TRI_2017-05-03 13.48
145        TRI_2017-12-31 13.39
146        TRI_2018-06-30 13.06
147        TRI_2021-12-24 12.76
148        TRI_2021-10-24 12.72
149        TRI_2021-08-12 12.36
150        TRI_2021-08-14 11.94
151        TRI_2020-11-06 11.93
152        TRI_2017-09-22 11.81
153        TRI_2017-02-03 11.80
154        TRI_2018-06-03 11.79
155        TRI_2018-11-05 11.72
156        TRI_2017-12-06 11.40
157        TRI_2020-01-24 11.15
158        TRI_2017-10-02 11.05
159        TRI_2017-09-23 11.03
160        TRI_2017-10-11 10.94
161        TRI_2018-10-16 10.84
162        TRI_2021-03-26 10.83
163        TRI_2021-01-21 10.74
164        TRI_2021-09-23 10.18
165        TRI_2020-07-30 9.83
166        TRI_2018-10-26 9.82
167        TRI_2017-08-08 9.80
168        TRI_2017-09-26 9.58
169        TRI_2020-10-19 9.56
170        TRI_2017-07-29 9.49
171        TRI_2021-10-31 9.45
172        TRI_2018-02-16 9.33
173        TRI_2018-08-17 9.10
174        TRI_2020-04-01 9.08
175        TRI_2021-09-09 8.69
176        TRI_2018-03-16 8.41
177        TRI_2020-04-24 8.18
178        TRI_2018-08-12 7.88
179        TRI_2020-01-02 7.85
180        TRI_2018-11-19 7.78
181        TRI_2018-03-05 7.67
182        TRI_2021-01-19 7.49
183        TRI_2018-07-15 7.43
184        TRI_2018-07-14 7.30
185        TRI_2020-12-16 7.24
186        TRI_2021-10-14 7.15
187        TRI_2018-10-31 7.12
188        TRI_2017-04-08 6.97
189        TRI_2020-08-06 6.90
190        TRI_2018-01-13 6.88
191        TRI_2018-09-25 6.86
192        TRI_2018-01-15 6.82
193        TRI_2017-07-17 6.80
194        TRI_2018-04-25 6.66
195        TRI_2018-07-29 6.65
196        TRI_2017-06-08 6.64
197        TRI_2017-07-07 6.64
198        TRI_2017-03-28 6.53
199        TRI_2020-03-25 6.51
200        TRI_2018-08-28 6.49
201        TRI_2020-11-27 6.45
202        TRI_2018-07-24 6.43
203        TRI_2020-04-09 6.40
204        TRI_2021-07-27 6.38
205        TRI_2020-01-12 6.37
206        TRI_2017-08-23 6.08
207        TRI_2021-02-05 6.04
208        TRI_2021-02-07 6.04
209        TRI_2020-02-15 6.00
210        TRI_2020-12-05 5.96
211        TRI_2021-07-23 5.91
212        TRI_2020-02-13 5.90
213        TRI_2020-02-07 5.87
214        TRI_2018-12-13 5.86
215        TRI_2021-03-04 5.84
216        TRI_2018-05-30 5.82
217        TRI_2020-12-20 5.82
218        TRI_2021-10-17 5.82
219        TRI_2020-03-21 5.80
220        TRI_2021-09-06 5.73
221        TRI_2021-10-27 5.66
222        TRI_2018-12-18 5.52
223        TRI_2020-11-01 5.34
224        TRI_2020-03-24 5.19
225        TRI_2020-05-13 5.13
226        TRI_2020-04-25 5.08
227        TRI_2018-05-06 5.06
228        TRI_2017-03-24 5.05
229        TRI_2020-10-31 4.96
230        TRI_2020-01-23 4.93
231        TRI_2020-08-15 4.89
232        TRI_2020-11-26 4.78
233        TRI_2017-05-31 4.70
234        TRI_2017-07-20 4.68
235        TRI_2021-03-03 4.62
236        TRI_2017-05-04 4.55
237        TRI_2017-03-04 4.50
238        TRI_2018-01-24 4.49
239        TRI_2020-08-08 4.46
240        TRI_2020-01-25 4.42
241        TRI_2017-07-21 4.34
242        TRI_2021-04-25 4.32
243        TRI_2018-05-25 4.30
244        TRI_2018-08-06 4.24
245        TRI_2020-05-22 4.21
246        TRI_2017-01-28 4.20
247        TRI_2018-09-17 4.18
248        TRI_2020-04-08 4.17
249        TRI_2020-06-01 4.16
250        TRI_2018-09-27 4.14
251        TRI_2021-01-22 4.05
252        TRI_2021-02-12 4.05
253        TRI_2021-10-28 4.03
254        TRI_2018-05-23 4.00
255        TRI_2020-07-19 3.95
256        TRI_2021-02-14 3.94
257        TRI_2020-02-06 3.92
258        TRI_2020-03-15 3.87
259        TRI_2017-08-22 3.80
260        TRI_2018-04-09 3.77
261        TRI_2021-09-05 3.73
262        TRI_2021-03-06 3.72
263        TRI_2020-04-10 3.68
264        TRI_2020-07-29 3.68
265        TRI_2020-07-31 3.67
266        TRI_2020-07-27 3.63
267        TRI_2018-09-26 3.32
268        TRI_2018-08-05 3.30
269        TRI_2021-04-01 3.25
270        TRI_2018-10-04 3.22
271        TRI_2020-03-18 3.19
272        TRI_2017-06-09 3.11
273        TRI_2017-05-21 2.98
274        TRI_2020-06-02 2.98
275        TRI_2021-08-04 2.93
276        TRI_2020-05-04 2.83
277        TRI_2021-02-22 2.82
278        TRI_2018-09-06 2.79
279        TRI_2020-01-10 2.78
280        TRI_2020-03-20 2.78
281        TRI_2017-11-02 2.76
282        TRI_2018-11-16 2.73
283        TRI_2018-05-11 2.72
284        TRI_2021-05-08 2.67
285        TRI_2021-12-22 2.66
286        TRI_2017-04-23 2.65
287        TRI_2020-04-02 2.64
288        TRI_2021-08-31 2.64
289        TRI_2017-08-07 2.55
290        TRI_2021-11-20 2.55
291        TRI_2021-04-29 2.54
292        TRI_2020-04-04 2.52
293        TRI_2021-06-22 2.52
294        TRI_2021-05-30 2.49
295        TRI_2017-09-21 2.46
296        TRI_2018-11-09 2.45
297        TRI_2018-04-02 2.44
298        TRI_2018-06-01 2.39
299        TRI_2020-07-10 2.39
300        TRI_2021-03-07 2.39
301        TRI_2020-09-13 2.37
302        TRI_2017-06-18 2.36
303        TRI_2020-09-05 2.35
304        TRI_2020-07-28 2.29
305        TRI_2017-06-26 2.24
306        TRI_2021-09-07 2.24
307        TRI_2021-09-03 2.16
308        TRI_2018-09-21 2.13
309        TRI_2021-10-18 2.11
310        TRI_2020-02-14 2.05
311        TRI_2020-07-20 2.02
312        TRI_2017-02-14 1.99
313        TRI_2020-01-13 1.99
314        TRI_2021-04-22 1.98
315        TRI_2017-10-31 1.92
316        TRI_2021-01-02 1.92
317        TRI_2018-07-03 1.91
318        TRI_2018-09-11 1.86
319        TRI_2021-01-03 1.86
320        TRI_2020-08-19 1.85
321        TRI_2021-03-27 1.80
322        TRI_2020-04-28 1.79
323        TRI_2021-09-24 1.79
324        TRI_2018-11-21 1.77
325        TRI_2021-10-09 1.77
326        TRI_2018-02-26 1.73
327        TRI_2018-09-20 1.71
328        TRI_2020-04-26 1.69
329        TRI_2021-11-19 1.68
330        TRI_2017-08-28 1.67
331        TRI_2018-09-15 1.63
332        TRI_2021-11-14 1.62
333        TRI_2020-05-12 1.61
334        TRI_2018-09-04 1.60
335        TRI_2018-05-01 1.59
336        TRI_2021-01-20 1.59
337        TRI_2018-08-22 1.57
338        TRI_2021-09-13 1.57
339        TRI_2020-03-17 1.56
340        TRI_2018-11-14 1.53
341        TRI_2017-05-16 1.50
342        TRI_2018-03-14 1.50
343        TRI_2017-07-08 1.47
344        TRI_2017-05-09 1.45
345        TRI_2021-03-31 1.44
346        TRI_2018-02-28 1.43
347        TRI_2021-11-21 1.39
348        TRI_2018-07-26 1.38
349        TRI_2018-10-27 1.35
350        TRI_2017-06-21 1.33
351        TRI_2018-02-27 1.32
352        TRI_2020-06-23 1.32
353        TRI_2021-06-16 1.29
354        TRI_2020-11-22 1.23
355        TRI_2021-10-04 1.21
356        TRI_2021-12-21 1.17
357        TRI_2018-05-20 1.09
358        TRI_2017-06-02 1.07
359        TRI_2021-04-21 1.07
360        TRI_2021-12-17 1.07
361        TRI_2020-09-17 1.06
362        TRI_2021-11-09 1.06
363        TRI_2017-02-13 1.05
364        TRI_2020-01-05 1.05
365        TRI_2020-04-21 1.05
366        TRI_2020-10-18 1.00
367        TRI_2021-04-08 0.99
368        TRI_2021-08-21 0.99
369        TRI_2017-03-15 0.96
370        TRI_2020-09-18 0.93
371        TRI_2017-10-12 0.92
372        TRI_2018-01-23 0.90
373        TRI_2018-07-28 0.90
374        TRI_2020-05-10 0.89
375        TRI_2018-11-22 0.88
376        TRI_2020-03-16 0.88
377        TRI_2021-04-23 0.88
378        TRI_2020-09-21 0.87
379        TRI_2021-06-14 0.87
380        TRI_2021-06-28 0.84
381        TRI_2017-04-29 0.83
382        TRI_2018-01-08 0.83
383        TRI_2020-03-26 0.83
384        TRI_2021-02-09 0.82
385        TRI_2017-02-05 0.79
386        TRI_2017-11-05 0.79
387        TRI_2018-02-05 0.79
388        TRI_2018-11-25 0.79
389        TRI_2020-11-11 0.79
390        TRI_2020-05-27 0.77
391        TRI_2017-04-07 0.75
392        TRI_2020-04-14 0.73
393        TRI_2021-04-24 0.73
394        TRI_2017-05-24 0.71
395        TRI_2018-10-28 0.70
396        TRI_2021-05-31 0.69
397        TRI_2021-06-15 0.69
398        TRI_2018-08-15 0.68
399        TRI_2020-09-03 0.67
400        TRI_2021-09-14 0.67
401        TRI_2020-09-16 0.66
402        TRI_2017-06-20 0.63
403        TRI_2021-09-30 0.61
404        TRI_2018-11-08 0.60
405        TRI_2020-03-30 0.60
406        TRI_2021-04-27 0.58
407        TRI_2018-12-26 0.57
408        TRI_2021-04-20 0.57
409        TRI_2021-10-08 0.57
410        TRI_2021-06-26 0.51
411        TRI_2017-07-28 0.50
412        TRI_2017-05-14 0.49
413        TRI_2021-08-13 0.49
414        TRI_2017-12-23 0.48
415        TRI_2021-06-02 0.46
416        TRI_2017-06-10 0.45
417        TRI_2020-05-29 0.45
418        TRI_2021-08-10 0.45
419        TRI_2017-06-27 0.44
420        TRI_2018-01-26 0.44
421        TRI_2018-04-05 0.44
422        TRI_2018-11-06 0.44
423        TRI_2017-08-31 0.42
424        TRI_2017-02-16 0.39
425        TRI_2021-07-22 0.39
426        TRI_2017-06-22 0.37
427        TRI_2018-08-13 0.37
428        TRI_2018-10-06 0.37
429        TRI_2018-10-13 0.36
430        TRI_2018-08-08 0.35
431        TRI_2020-05-05 0.35
432        TRI_2021-05-29 0.35
433        TRI_2017-02-12 0.32
434        TRI_2017-10-18 0.32
435        TRI_2020-06-12 0.30
436        TRI_2017-06-06 0.27
437        TRI_2021-05-07 0.27
438        TRI_2018-05-19 0.20
439        TRI_2017-07-03 0.19
440        TRI_2020-03-19 0.18
441        TRI_2021-08-30 0.18
442        TRI_2021-09-02 0.18
443        TRI_2017-07-31 0.17
444        TRI_2018-04-18 0.17
445        TRI_2017-05-05 0.15
446        TRI_2020-03-29 0.14
447        TRI_2018-04-26 0.13
448        TRI_2017-11-03 0.10
449        TRI_2017-04-22 0.08
450        TRI_2017-01-01 0.00
451        TRI_2017-01-04 0.00
452        TRI_2017-01-05 0.00
453        TRI_2017-01-06 0.00


  See additional explanation after the below links
The first 8 localities are placed according to 8 cardinal points at about 30 km from Tricastin, the following localities are ranked according to the severity of the health impact in decreasing order: Meisse →N (FRA)         Dieulefit →NE (FRA)         Nyons →E (FRA)         Gigondas →SE (FRA)         St‑Geniès →S (FRA)         Fontarèches →SE (FRA)         Vagnas →W (FRA)         St‑Maurice d'Ardèche →NW (FRA)         Orange (FRA)         Montélimar (FRA)         Avignon (FRA)         Arles (FRA)         Privas (FRA)         Nîmes (FRA)         Valence (FRA)         Istres (FRA)         St‑Rambert‑d'Albon (FRA)         Vienne (FRA)         Aix‑en‑Provence (FRA)         Annonay (FRA)         Alès (FRA)         Marseille (FRA)         Villefranche‑sur‑Saône (FRA)         Lyon (FRA)         Cannes (FRA)         Mâcon (FRA)         Montpellier (FRA)         Bourgoin‑Jallieu (FRA)         Annecy (FRA)         Toulon (FRA)         Sanremo (ITA)         Nice (FRA)         Saint‑Tropez (FRA)         Feurs (FRA)         Cuneo (ITA)         Draguignan (FRA)         Genève (CHE)         Béziers (FRA)         St‑Étienne (FRA)         Monaco (MCO)         Lausanne (CHE)         Sisteron (FRA)         Roanne (FRA)         Torino (ITA)         Perpignan (FRA)         Pinerolo (ITA)         Bourg‑en‑Bresse (FRA)         Châtillon‑en‑Diois (FRA)         Issoire (FRA)         Grenoble (FRA)         Figueras (ESP)         Neuchâtel (CHE)         Alessandria (ITA)         Carcassonne (FRA)         Mende (FRA)         Bellegarde‑sur‑Valserine (FRA)         Digne (FRA)         Le Puy (FRA)         Chignin (FRA)         Vichy (FRA)         Pisa (ITA)         Gap (FRA)         Fribourg (CHE)         Savona (ITA)         Bologna (ITA)         Mulhouse (FRA)         Albi (FRA)         L'Alpe d'Huez (FRA)         Alba (ITA)         Dijon (FRA)         Bern (CHE)         Strasbourg (FRA)         Moulins (FRA)         Girona (ESP)         Genoa (ITA)         St‑Jean‑de‑Maurienne (FRA)         Nancy (FRA)         La Spezia (ITA)         Rodez (FRA)         Clermont‑Ferrand (FRA)        

See the potential impact on the following geographical areas:          Europe (51 countries)         Spain          France          Italy          Switzerland 


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.




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)