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 :

Vagnas →W (30 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 1245.46
2        TRI_2018-01-14 891.91
3        TRI_2018-12-09 638.15
4        TRI_2017-06-14 553.39
5        TRI_2017-12-14 440.12
6        TRI_2021-09-26 414.20
7        TRI_2020-08-11 375.06
8        TRI_2020-01-26 349.14
9        TRI_2018-01-18 345.77
10        TRI_2018-05-07 306.89
11        TRI_2018-12-16 297.04
12        TRI_2017-11-28 296.78
13        TRI_2018-06-07 283.31
14        TRI_2020-09-20 252.67
15        TRI_2018-06-05 238.90
16        TRI_2020-05-01 216.07
17        TRI_2020-09-22 213.48
18        TRI_2018-11-23 212.08
19        TRI_2018-05-24 193.42
20        TRI_2018-03-04 182.24
21        TRI_2017-12-01 156.66
22        TRI_2018-04-12 152.69
23        TRI_2020-08-10 149.61
24        TRI_2018-11-15 135.87
25        TRI_2018-09-09 131.93
26        TRI_2018-06-09 123.61
27        TRI_2017-04-26 120.19
28        TRI_2017-12-12 114.31
29        TRI_2020-02-07 114.18
30        TRI_2018-10-11 114.13
31        TRI_2017-02-10 113.06
32        TRI_2018-07-20 108.79
33        TRI_2021-12-25 107.08
34        TRI_2018-01-04 106.27
35        TRI_2020-11-26 103.65
36        TRI_2017-06-11 103.01
37        TRI_2017-08-02 101.53
38        TRI_2020-01-16 100.78
39        TRI_2018-06-06 99.04
40        TRI_2021-05-15 98.08
41        TRI_2020-01-02 88.52
42        TRI_2020-11-09 87.19
43        TRI_2018-08-17 86.52
44        TRI_2020-12-18 85.77
45        TRI_2018-02-06 85.69
46        TRI_2018-03-24 84.68
47        TRI_2021-06-27 81.75
48        TRI_2020-08-09 81.00
49        TRI_2021-04-30 80.74
50        TRI_2017-09-22 79.86
51        TRI_2017-07-22 77.35
52        TRI_2020-11-12 76.31
53        TRI_2017-08-29 76.05
54        TRI_2020-10-09 70.71
55        TRI_2020-12-08 67.29
56        TRI_2018-05-31 66.04
57        TRI_2020-06-24 64.18
58        TRI_2018-03-08 63.84
59        TRI_2017-01-02 63.76
60        TRI_2020-12-16 59.72
61        TRI_2018-10-05 59.12
62        TRI_2018-11-17 57.98
63        TRI_2017-02-15 56.30
64        TRI_2017-12-07 56.17
65        TRI_2018-11-30 55.86
66        TRI_2018-04-06 54.48
67        TRI_2018-01-15 53.24
68        TRI_2018-10-10 53.11
69        TRI_2020-09-14 52.98
70        TRI_2020-04-22 52.44
71        TRI_2017-10-13 52.15
72        TRI_2017-01-03 51.79
73        TRI_2018-09-30 49.33
74        TRI_2018-10-16 47.98
75        TRI_2020-08-07 47.49
76        TRI_2018-08-13 47.25
77        TRI_2018-11-20 47.25
78        TRI_2018-06-21 47.23
79        TRI_2020-04-13 46.84
80        TRI_2018-05-29 46.42
81        TRI_2020-10-31 46.40
82        TRI_2017-03-16 45.52
83        TRI_2021-04-26 42.56
84        TRI_2020-12-17 41.42
85        TRI_2020-04-23 41.26
86        TRI_2017-03-26 41.16
87        TRI_2020-09-15 40.44
88        TRI_2017-04-24 39.74
89        TRI_2018-04-20 39.71
90        TRI_2021-12-24 39.55
91        TRI_2017-08-14 39.45
92        TRI_2018-01-09 38.75
93        TRI_2017-11-01 38.23
94        TRI_2018-03-03 37.30
95        TRI_2020-08-13 35.80
96        TRI_2017-09-30 35.67
97        TRI_2018-06-11 35.64
98        TRI_2018-01-03 34.91
99        TRI_2020-12-07 34.78
100        TRI_2020-01-06 32.97
101        TRI_2018-03-16 32.71
102        TRI_2020-04-18 32.48
103        TRI_2018-04-14 30.82
104        TRI_2017-03-02 30.69
105        TRI_2018-05-27 29.89
106        TRI_2018-07-04 29.78
107        TRI_2021-08-12 29.47
108        TRI_2020-07-20 28.90
109        TRI_2020-09-04 28.75
110        TRI_2017-10-11 28.69
111        TRI_2018-10-26 27.03
112        TRI_2017-10-02 26.96
113        TRI_2017-06-01 26.93
114        TRI_2018-04-19 26.93
115        TRI_2018-07-27 26.88
116        TRI_2018-09-16 26.08
117        TRI_2017-08-18 26.05
118        TRI_2021-10-17 26.05
119        TRI_2021-10-24 25.06
120        TRI_2021-03-01 24.74
121        TRI_2018-06-29 24.56
122        TRI_2018-06-20 24.47
123        TRI_2020-01-24 24.14
124        TRI_2018-07-24 24.11
125        TRI_2017-05-31 23.93
126        TRI_2017-06-13 23.51
127        TRI_2021-09-23 23.10
128        TRI_2020-03-23 22.10
129        TRI_2021-03-26 21.87
130        TRI_2018-09-10 21.29
131        TRI_2020-04-09 20.65
132        TRI_2020-05-31 20.59
133        TRI_2020-12-31 20.48
134        TRI_2018-08-16 20.39
135        TRI_2021-08-14 20.13
136        TRI_2021-06-21 20.05
137        TRI_2018-08-06 19.54
138        TRI_2018-09-05 19.27
139        TRI_2017-03-30 19.26
140        TRI_2018-06-02 19.17
141        TRI_2021-05-11 18.91
142        TRI_2020-01-10 18.79
143        TRI_2018-11-13 18.13
144        TRI_2017-09-27 18.11
145        TRI_2020-04-19 18.00
146        TRI_2018-05-21 17.88
147        TRI_2017-07-04 17.73
148        TRI_2018-04-27 17.68
149        TRI_2018-06-04 17.65
150        TRI_2017-04-08 16.56
151        TRI_2017-04-01 16.29
152        TRI_2021-01-19 16.05
153        TRI_2017-12-31 15.65
154        TRI_2020-12-05 15.63
155        TRI_2017-09-21 15.28
156        TRI_2018-06-30 15.10
157        TRI_2018-05-30 14.83
158        TRI_2020-11-01 14.66
159        TRI_2021-10-01 14.32
160        TRI_2018-09-28 14.31
161        TRI_2018-04-21 14.26
162        TRI_2020-04-01 14.09
163        TRI_2017-07-29 13.98
164        TRI_2018-07-15 13.82
165        TRI_2021-07-23 13.77
166        TRI_2017-09-26 13.70
167        TRI_2020-12-20 13.51
168        TRI_2017-03-24 13.40
169        TRI_2017-05-10 13.39
170        TRI_2020-07-30 13.20
171        TRI_2017-05-12 13.15
172        TRI_2017-08-08 12.86
173        TRI_2017-12-06 12.70
174        TRI_2017-08-27 12.67
175        TRI_2018-11-21 12.13
176        TRI_2018-07-14 12.10
177        TRI_2017-09-23 11.92
178        TRI_2020-04-15 11.92
179        TRI_2018-04-09 11.66
180        TRI_2020-03-21 11.39
181        TRI_2017-05-03 11.16
182        TRI_2020-08-08 11.12
183        TRI_2020-06-28 11.10
184        TRI_2020-04-04 10.86
185        TRI_2020-08-15 10.85
186        TRI_2020-03-17 10.76
187        TRI_2020-07-29 10.51
188        TRI_2020-03-18 10.44
189        TRI_2020-10-19 10.28
190        TRI_2018-01-05 10.18
191        TRI_2017-07-21 9.99
192        TRI_2020-11-27 9.97
193        TRI_2021-02-05 9.84
194        TRI_2020-04-08 9.74
195        TRI_2021-11-21 9.45
196        TRI_2020-05-22 9.21
197        TRI_2021-09-09 9.19
198        TRI_2020-04-28 9.03
199        TRI_2021-09-05 8.90
200        TRI_2021-10-28 8.89
201        TRI_2020-08-06 8.85
202        TRI_2020-01-12 8.73
203        TRI_2018-01-07 8.71
204        TRI_2020-06-02 8.70
205        TRI_2020-03-25 8.63
206        TRI_2018-05-26 8.55
207        TRI_2021-10-31 8.31
208        TRI_2020-11-06 8.07
209        TRI_2021-03-03 8.03
210        TRI_2020-02-15 7.94
211        TRI_2021-11-19 7.87
212        TRI_2018-09-25 7.73
213        TRI_2021-02-08 7.50
214        TRI_2018-05-06 7.42
215        TRI_2020-07-27 7.36
216        TRI_2021-02-07 7.30
217        TRI_2018-11-22 7.06
218        TRI_2017-06-09 7.02
219        TRI_2021-09-06 6.93
220        TRI_2018-04-11 6.91
221        TRI_2017-08-22 6.84
222        TRI_2018-07-03 6.79
223        TRI_2018-05-23 6.70
224        TRI_2021-02-14 6.60
225        TRI_2021-07-27 6.51
226        TRI_2017-07-17 6.50
227        TRI_2018-09-26 6.45
228        TRI_2020-03-15 6.44
229        TRI_2018-04-02 6.04
230        TRI_2021-10-14 5.97
231        TRI_2020-02-13 5.94
232        TRI_2018-07-26 5.93
233        TRI_2017-06-21 5.84
234        TRI_2018-08-12 5.65
235        TRI_2018-01-08 5.51
236        TRI_2018-08-05 5.45
237        TRI_2020-07-31 5.45
238        TRI_2021-05-30 5.42
239        TRI_2018-11-05 5.34
240        TRI_2018-06-01 5.31
241        TRI_2020-02-11 5.28
242        TRI_2020-09-05 5.17
243        TRI_2018-12-13 5.12
244        TRI_2017-06-08 4.84
245        TRI_2017-04-10 4.79
246        TRI_2017-07-20 4.72
247        TRI_2021-11-20 4.44
248        TRI_2020-04-24 4.35
249        TRI_2017-01-28 4.30
250        TRI_2020-03-24 4.26
251        TRI_2018-09-04 4.23
252        TRI_2020-05-11 4.11
253        TRI_2021-09-24 4.06
254        TRI_2017-08-28 4.03
255        TRI_2017-05-04 3.92
256        TRI_2020-04-10 3.91
257        TRI_2021-06-22 3.88
258        TRI_2018-11-25 3.82
259        TRI_2018-10-04 3.81
260        TRI_2021-03-07 3.72
261        TRI_2017-07-07 3.68
262        TRI_2018-09-17 3.67
263        TRI_2021-03-04 3.48
264        TRI_2018-01-24 3.43
265        TRI_2020-01-25 3.38
266        TRI_2020-08-19 3.34
267        TRI_2017-11-02 3.32
268        TRI_2018-08-28 3.29
269        TRI_2020-07-10 3.29
270        TRI_2020-02-06 3.26
271        TRI_2021-03-06 3.26
272        TRI_2021-09-07 3.24
273        TRI_2021-10-27 3.10
274        TRI_2018-05-01 3.09
275        TRI_2020-03-26 3.08
276        TRI_2017-03-28 3.06
277        TRI_2020-11-22 3.06
278        TRI_2021-12-17 3.02
279        TRI_2020-05-04 3.00
280        TRI_2017-05-16 2.91
281        TRI_2020-03-20 2.86
282        TRI_2018-08-22 2.83
283        TRI_2021-02-12 2.67
284        TRI_2021-04-23 2.66
285        TRI_2017-04-23 2.63
286        TRI_2021-04-29 2.61
287        TRI_2018-07-29 2.59
288        TRI_2021-04-21 2.59
289        TRI_2017-06-26 2.45
290        TRI_2018-03-05 2.42
291        TRI_2021-12-22 2.42
292        TRI_2021-08-31 2.31
293        TRI_2017-02-14 2.28
294        TRI_2021-06-26 2.27
295        TRI_2018-02-16 2.21
296        TRI_2017-05-05 2.20
297        TRI_2018-04-25 2.19
298        TRI_2018-11-16 2.15
299        TRI_2017-12-30 2.10
300        TRI_2018-09-27 2.10
301        TRI_2021-09-13 2.08
302        TRI_2021-10-04 2.07
303        TRI_2021-04-20 2.00
304        TRI_2018-07-28 1.99
305        TRI_2017-04-07 1.97
306        TRI_2018-09-20 1.97
307        TRI_2017-02-17 1.94
308        TRI_2021-06-14 1.92
309        TRI_2020-04-02 1.91
310        TRI_2021-08-10 1.89
311        TRI_2020-05-10 1.87
312        TRI_2017-08-07 1.86
313        TRI_2020-11-23 1.86
314        TRI_2020-04-25 1.85
315        TRI_2021-04-01 1.81
316        TRI_2018-11-19 1.76
317        TRI_2021-08-04 1.70
318        TRI_2021-11-09 1.69
319        TRI_2021-04-25 1.65
320        TRI_2021-05-08 1.65
321        TRI_2021-03-27 1.55
322        TRI_2018-05-11 1.53
323        TRI_2020-06-23 1.52
324        TRI_2020-09-13 1.51
325        TRI_2018-02-28 1.49
326        TRI_2018-06-03 1.48
327        TRI_2020-02-14 1.47
328        TRI_2020-05-05 1.45
329        TRI_2021-04-27 1.43
330        TRI_2018-10-27 1.41
331        TRI_2020-04-21 1.37
332        TRI_2017-05-21 1.36
333        TRI_2018-05-20 1.36
334        TRI_2021-04-08 1.33
335        TRI_2021-10-18 1.33
336        TRI_2017-01-20 1.32
337        TRI_2017-05-09 1.31
338        TRI_2021-04-22 1.31
339        TRI_2021-01-03 1.30
340        TRI_2020-01-04 1.24
341        TRI_2021-09-03 1.21
342        TRI_2017-08-31 1.20
343        TRI_2021-07-30 1.18
344        TRI_2021-07-22 1.17
345        TRI_2017-02-05 1.16
346        TRI_2020-05-12 1.15
347        TRI_2021-02-09 1.15
348        TRI_2021-10-25 1.15
349        TRI_2018-01-10 1.14
350        TRI_2017-02-16 1.12
351        TRI_2020-05-13 1.11
352        TRI_2020-09-03 1.07
353        TRI_2020-11-18 1.07
354        TRI_2018-03-14 1.06
355        TRI_2021-01-04 1.05
356        TRI_2020-07-19 0.96
357        TRI_2020-10-18 0.96
358        TRI_2017-06-20 0.95
359        TRI_2018-02-26 0.91
360        TRI_2021-01-02 0.87
361        TRI_2018-05-25 0.85
362        TRI_2021-10-09 0.83
363        TRI_2021-10-22 0.83
364        TRI_2017-03-15 0.81
365        TRI_2017-07-03 0.81
366        TRI_2017-10-18 0.81
367        TRI_2020-03-30 0.79
368        TRI_2020-09-21 0.78
369        TRI_2018-09-11 0.76
370        TRI_2021-03-31 0.76
371        TRI_2021-08-11 0.75
372        TRI_2020-01-23 0.74
373        TRI_2020-07-28 0.74
374        TRI_2020-09-07 0.74
375        TRI_2018-10-28 0.73
376        TRI_2017-07-08 0.69
377        TRI_2017-10-24 0.68
378        TRI_2017-06-12 0.67
379        TRI_2018-12-30 0.67
380        TRI_2020-05-27 0.67
381        TRI_2018-04-05 0.66
382        TRI_2018-11-14 0.64
383        TRI_2018-10-15 0.63
384        TRI_2020-05-29 0.63
385        TRI_2020-01-05 0.59
386        TRI_2020-09-18 0.58
387        TRI_2021-07-04 0.58
388        TRI_2021-09-30 0.57
389        TRI_2021-11-14 0.56
390        TRI_2018-09-15 0.55
391        TRI_2018-08-15 0.54
392        TRI_2021-09-02 0.53
393        TRI_2018-09-03 0.52
394        TRI_2017-05-14 0.51
395        TRI_2021-11-08 0.51
396        TRI_2018-11-24 0.50
397        TRI_2021-10-08 0.47
398        TRI_2017-05-13 0.44
399        TRI_2017-04-22 0.43
400        TRI_2017-04-29 0.40
401        TRI_2017-05-24 0.40
402        TRI_2018-05-22 0.40
403        TRI_2021-07-28 0.38
404        TRI_2017-10-31 0.37
405        TRI_2020-05-28 0.37
406        TRI_2021-08-21 0.37
407        TRI_2021-03-30 0.34
408        TRI_2017-06-10 0.30
409        TRI_2020-01-22 0.30
410        TRI_2020-05-25 0.30
411        TRI_2020-09-16 0.30
412        TRI_2017-06-18 0.29
413        TRI_2018-08-04 0.29
414        TRI_2020-09-17 0.29
415        TRI_2020-03-29 0.27
416        TRI_2021-05-29 0.27
417        TRI_2017-01-25 0.26
418        TRI_2021-08-13 0.26
419        TRI_2021-03-05 0.23
420        TRI_2017-02-13 0.21
421        TRI_2017-06-06 0.20
422        TRI_2017-07-28 0.20
423        TRI_2020-11-11 0.20
424        TRI_2021-05-07 0.20
425        TRI_2018-08-01 0.15
426        TRI_2020-05-23 0.12
427        TRI_2018-03-13 0.05
428        TRI_2021-09-12 0.05
429        TRI_2018-04-26 0.04
430        TRI_2017-01-01 0.00
431        TRI_2017-01-04 0.00
432        TRI_2017-01-05 0.00
433        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)