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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 :

Nyons →E (32 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_2018-01-17 141.42
2        TRI_2018-09-27 105.13
3        TRI_2020-10-28 96.50
4        TRI_2020-04-21 84.11
5        TRI_2017-10-26 73.12
6        TRI_2020-03-21 69.60
7        TRI_2018-09-26 63.89
8        TRI_2017-03-06 60.50
9        TRI_2017-03-17 59.56
10        TRI_2020-04-02 48.19
11        TRI_2021-02-23 47.59
12        TRI_2021-10-17 44.01
13        TRI_2017-09-23 43.47
14        TRI_2017-03-02 41.63
15        TRI_2018-02-15 41.52
16        TRI_2018-06-07 39.40
17        TRI_2017-08-23 37.71
18        TRI_2017-10-13 37.48
19        TRI_2020-05-30 37.25
20        TRI_2020-04-26 37.07
21        TRI_2017-03-28 36.44
22        TRI_2020-12-12 35.07
23        TRI_2020-04-24 34.21
24        TRI_2018-04-19 33.88
25        TRI_2018-07-24 33.59
26        TRI_2021-03-07 31.67
27        TRI_2020-04-10 30.84
28        TRI_2021-05-06 30.48
29        TRI_2020-12-24 29.65
30        TRI_2018-07-15 29.63
31        TRI_2018-09-06 29.47
32        TRI_2020-04-18 28.72
33        TRI_2020-10-31 27.84
34        TRI_2017-08-28 27.66
35        TRI_2017-06-09 26.44
36        TRI_2017-08-27 26.08
37        TRI_2021-10-18 25.50
38        TRI_2020-06-02 24.78
39        TRI_2017-06-14 24.52
40        TRI_2018-04-20 24.36
41        TRI_2018-07-29 23.82
42        TRI_2017-03-05 23.45
43        TRI_2018-06-30 23.27
44        TRI_2018-06-29 22.80
45        TRI_2017-06-28 22.55
46        TRI_2018-07-14 22.44
47        TRI_2018-01-18 22.05
48        TRI_2018-05-23 21.56
49        TRI_2018-04-23 21.50
50        TRI_2020-10-09 20.84
51        TRI_2020-12-08 20.15
52        TRI_2018-01-31 19.01
53        TRI_2020-03-26 18.94
54        TRI_2021-04-01 18.32
55        TRI_2017-02-16 18.18
56        TRI_2021-01-29 17.86
57        TRI_2021-11-01 17.56
58        TRI_2018-09-09 17.51
59        TRI_2017-10-02 17.31
60        TRI_2020-09-24 17.17
61        TRI_2020-07-10 17.14
62        TRI_2021-05-15 16.72
63        TRI_2018-06-04 16.64
64        TRI_2021-08-15 16.28
65        TRI_2018-09-30 16.21
66        TRI_2020-03-20 15.92
67        TRI_2020-02-11 15.38
68        TRI_2020-04-23 15.28
69        TRI_2018-03-12 15.23
70        TRI_2018-07-28 15.11
71        TRI_2020-09-23 15.07
72        TRI_2020-01-03 15.05
73        TRI_2018-05-06 15.00
74        TRI_2020-08-09 14.50
75        TRI_2017-12-15 14.22
76        TRI_2018-12-09 13.99
77        TRI_2018-08-13 13.87
78        TRI_2018-04-25 13.80
79        TRI_2017-07-29 13.77
80        TRI_2017-12-12 13.73
81        TRI_2017-03-12 13.51
82        TRI_2017-09-22 13.27
83        TRI_2018-09-10 13.07
84        TRI_2020-08-19 12.95
85        TRI_2020-05-11 12.63
86        TRI_2018-01-04 12.46
87        TRI_2017-01-13 12.37
88        TRI_2020-05-23 12.37
89        TRI_2021-09-05 12.31
90        TRI_2018-08-22 12.26
91        TRI_2018-05-22 12.14
92        TRI_2020-04-09 11.96
93        TRI_2020-08-28 11.67
94        TRI_2018-07-05 11.47
95        TRI_2020-07-20 11.33
96        TRI_2020-05-22 11.23
97        TRI_2021-04-20 10.89
98        TRI_2017-07-08 10.86
99        TRI_2018-09-05 10.74
100        TRI_2018-12-16 10.42
101        TRI_2017-09-21 10.41
102        TRI_2020-07-27 10.37
103        TRI_2021-12-10 10.10
104        TRI_2021-06-24 9.93
105        TRI_2021-09-23 9.88
106        TRI_2020-09-21 9.86
107        TRI_2017-09-29 9.73
108        TRI_2017-04-01 9.51
109        TRI_2020-12-20 9.51
110        TRI_2020-04-19 9.43
111        TRI_2021-09-06 9.41
112        TRI_2020-06-04 9.39
113        TRI_2018-07-27 9.35
114        TRI_2017-08-22 9.34
115        TRI_2018-06-20 9.27
116        TRI_2021-04-27 8.84
117        TRI_2018-10-26 8.78
118        TRI_2017-07-07 8.67
119        TRI_2017-12-14 8.58
120        TRI_2021-08-04 8.54
121        TRI_2018-08-16 8.44
122        TRI_2018-09-25 8.41
123        TRI_2020-04-22 8.39
124        TRI_2020-07-09 8.39
125        TRI_2021-11-20 8.39
126        TRI_2017-05-13 8.28
127        TRI_2020-01-12 8.23
128        TRI_2018-07-03 8.16
129        TRI_2020-01-06 8.09
130        TRI_2020-09-25 8.06
131        TRI_2017-08-08 8.02
132        TRI_2018-11-25 7.83
133        TRI_2020-03-24 7.82
134        TRI_2020-11-01 7.48
135        TRI_2021-08-21 7.41
136        TRI_2020-08-07 7.39
137        TRI_2017-04-08 7.29
138        TRI_2018-11-30 7.24
139        TRI_2017-09-30 7.22
140        TRI_2021-05-05 7.04
141        TRI_2017-12-30 6.99
142        TRI_2018-05-31 6.89
143        TRI_2018-07-26 6.83
144        TRI_2021-04-30 6.71
145        TRI_2021-03-04 6.70
146        TRI_2020-01-10 6.63
147        TRI_2017-07-21 6.53
148        TRI_2017-06-30 6.22
149        TRI_2021-05-08 6.16
150        TRI_2020-07-22 6.15
151        TRI_2020-06-11 6.12
152        TRI_2020-11-18 6.06
153        TRI_2018-08-06 5.96
154        TRI_2021-08-12 5.91
155        TRI_2018-06-02 5.90
156        TRI_2018-03-14 5.84
157        TRI_2021-03-30 5.74
158        TRI_2017-03-16 5.73
159        TRI_2017-07-20 5.61
160        TRI_2021-04-22 5.59
161        TRI_2021-04-25 5.51
162        TRI_2018-10-07 5.43
163        TRI_2020-01-26 5.43
164        TRI_2021-04-21 5.42
165        TRI_2020-09-05 5.40
166        TRI_2020-01-13 5.25
167        TRI_2017-08-13 4.99
168        TRI_2017-09-26 4.98
169        TRI_2020-03-16 4.96
170        TRI_2021-06-22 4.93
171        TRI_2018-03-03 4.83
172        TRI_2017-12-06 4.70
173        TRI_2020-08-08 4.64
174        TRI_2017-02-03 4.47
175        TRI_2018-01-03 4.45
176        TRI_2018-04-27 4.35
177        TRI_2017-06-22 4.27
178        TRI_2018-09-15 4.21
179        TRI_2017-06-11 4.20
180        TRI_2018-05-11 4.19
181        TRI_2017-02-15 4.15
182        TRI_2020-10-05 4.15
183        TRI_2021-07-27 4.06
184        TRI_2018-12-13 4.05
185        TRI_2021-02-17 4.05
186        TRI_2020-11-09 4.04
187        TRI_2020-05-31 4.00
188        TRI_2021-07-30 3.98
189        TRI_2018-08-12 3.95
190        TRI_2020-03-19 3.92
191        TRI_2020-04-04 3.91
192        TRI_2017-10-14 3.89
193        TRI_2018-06-08 3.78
194        TRI_2021-02-08 3.77
195        TRI_2021-10-27 3.70
196        TRI_2017-11-15 3.67
197        TRI_2021-02-14 3.67
198        TRI_2021-10-21 3.67
199        TRI_2021-01-04 3.65
200        TRI_2020-12-07 3.62
201        TRI_2020-09-20 3.61
202        TRI_2020-04-25 3.58
203        TRI_2017-12-31 3.57
204        TRI_2021-05-31 3.57
205        TRI_2020-03-25 3.55
206        TRI_2017-08-18 3.52
207        TRI_2017-05-21 3.51
208        TRI_2020-03-17 3.42
209        TRI_2017-06-10 3.40
210        TRI_2021-12-20 3.36
211        TRI_2018-04-14 3.33
212        TRI_2021-10-08 3.30
213        TRI_2018-03-24 3.25
214        TRI_2021-12-25 3.23
215        TRI_2018-09-28 3.21
216        TRI_2020-10-18 3.21
217        TRI_2021-06-28 3.20
218        TRI_2020-04-01 3.16
219        TRI_2021-07-29 3.09
220        TRI_2020-08-13 3.07
221        TRI_2021-03-14 3.06
222        TRI_2021-10-24 3.06
223        TRI_2020-12-31 2.98
224        TRI_2021-02-07 2.97
225        TRI_2018-02-16 2.96
226        TRI_2017-06-13 2.93
227        TRI_2017-09-14 2.90
228        TRI_2018-05-25 2.87
229        TRI_2020-08-15 2.85
230        TRI_2017-05-06 2.83
231        TRI_2020-11-22 2.83
232        TRI_2020-09-15 2.80
233        TRI_2020-07-31 2.74
234        TRI_2021-06-23 2.72
235        TRI_2021-08-13 2.72
236        TRI_2020-02-27 2.70
237        TRI_2020-03-23 2.63
238        TRI_2017-07-04 2.60
239        TRI_2017-06-21 2.59
240        TRI_2020-04-12 2.58
241        TRI_2018-09-18 2.55
242        TRI_2020-03-18 2.51
243        TRI_2018-11-24 2.50
244        TRI_2020-05-05 2.42
245        TRI_2021-10-14 2.42
246        TRI_2018-08-28 2.40
247        TRI_2020-08-06 2.39
248        TRI_2018-09-20 2.37
249        TRI_2020-06-28 2.35
250        TRI_2017-05-30 2.31
251        TRI_2021-09-24 2.28
252        TRI_2018-09-04 2.23
253        TRI_2018-05-21 2.14
254        TRI_2018-08-15 2.13
255        TRI_2018-09-21 2.13
256        TRI_2020-07-29 2.12
257        TRI_2017-08-07 2.04
258        TRI_2021-04-23 2.03
259        TRI_2018-03-02 2.02
260        TRI_2021-06-26 2.02
261        TRI_2021-01-30 2.00
262        TRI_2017-10-31 1.97
263        TRI_2020-09-14 1.91
264        TRI_2018-06-21 1.88
265        TRI_2021-02-09 1.87
266        TRI_2021-09-04 1.87
267        TRI_2021-03-31 1.85
268        TRI_2017-10-11 1.80
269        TRI_2021-06-14 1.73
270        TRI_2021-03-02 1.71
271        TRI_2018-04-12 1.68
272        TRI_2018-11-13 1.63
273        TRI_2018-05-07 1.61
274        TRI_2021-12-21 1.59
275        TRI_2021-03-27 1.56
276        TRI_2018-05-19 1.55
277        TRI_2021-05-11 1.53
278        TRI_2018-06-11 1.52
279        TRI_2020-12-21 1.52
280        TRI_2020-03-12 1.51
281        TRI_2018-02-06 1.50
282        TRI_2017-02-23 1.48
283        TRI_2018-06-03 1.48
284        TRI_2017-06-20 1.47
285        TRI_2017-07-11 1.47
286        TRI_2017-06-08 1.46
287        TRI_2020-09-10 1.46
288        TRI_2021-11-02 1.46
289        TRI_2017-09-28 1.44
290        TRI_2021-07-28 1.44
291        TRI_2021-12-01 1.44
292        TRI_2018-07-20 1.43
293        TRI_2017-08-02 1.42
294        TRI_2020-07-19 1.42
295        TRI_2017-04-26 1.40
296        TRI_2017-10-28 1.39
297        TRI_2017-05-12 1.38
298        TRI_2018-08-17 1.37
299        TRI_2021-03-11 1.37
300        TRI_2021-08-14 1.37
301        TRI_2020-05-29 1.35
302        TRI_2017-06-27 1.33
303        TRI_2017-02-25 1.30
304        TRI_2017-05-03 1.25
305        TRI_2021-09-09 1.23
306        TRI_2021-11-03 1.22
307        TRI_2021-08-11 1.20
308        TRI_2017-11-25 1.18
309        TRI_2018-08-29 1.17
310        TRI_2020-06-23 1.14
311        TRI_2021-05-26 1.14
312        TRI_2017-12-07 1.13
313        TRI_2020-05-15 1.13
314        TRI_2021-04-08 1.13
315        TRI_2018-02-27 1.11
316        TRI_2018-02-01 1.09
317        TRI_2018-10-27 1.09
318        TRI_2021-12-24 1.09
319        TRI_2020-03-29 1.08
320        TRI_2020-05-04 1.08
321        TRI_2017-01-02 1.06
322        TRI_2021-05-30 1.06
323        TRI_2021-03-29 1.04
324        TRI_2020-09-03 1.03
325        TRI_2017-04-23 1.00
326        TRI_2017-05-04 1.00
327        TRI_2020-03-01 1.00
328        TRI_2018-06-01 0.96
329        TRI_2021-10-15 0.94
330        TRI_2018-10-06 0.92
331        TRI_2020-05-12 0.92
332        TRI_2017-09-25 0.84
333        TRI_2017-04-07 0.83
334        TRI_2020-06-01 0.83
335        TRI_2021-02-12 0.83
336        TRI_2017-02-05 0.80
337        TRI_2020-09-30 0.80
338        TRI_2018-06-28 0.79
339        TRI_2018-09-11 0.77
340        TRI_2020-05-28 0.77
341        TRI_2021-06-16 0.76
342        TRI_2017-12-01 0.74
343        TRI_2020-09-13 0.72
344        TRI_2020-03-28 0.71
345        TRI_2018-03-06 0.70
346        TRI_2017-01-28 0.69
347        TRI_2017-06-12 0.64
348        TRI_2018-01-10 0.64
349        TRI_2017-08-31 0.63
350        TRI_2020-12-05 0.63
351        TRI_2021-07-19 0.63
352        TRI_2017-04-22 0.62
353        TRI_2018-10-04 0.62
354        TRI_2021-08-30 0.59
355        TRI_2020-06-07 0.58
356        TRI_2020-04-28 0.57
357        TRI_2020-09-16 0.53
358        TRI_2017-01-25 0.51
359        TRI_2018-03-29 0.51
360        TRI_2018-05-01 0.50
361        TRI_2018-04-01 0.49
362        TRI_2017-03-26 0.48
363        TRI_2021-07-04 0.47
364        TRI_2020-03-30 0.44
365        TRI_2018-07-19 0.43
366        TRI_2020-10-16 0.41
367        TRI_2017-05-09 0.40
368        TRI_2021-02-24 0.40
369        TRI_2021-01-19 0.39
370        TRI_2018-10-24 0.38
371        TRI_2017-09-27 0.36
372        TRI_2018-04-21 0.36
373        TRI_2021-10-04 0.36
374        TRI_2020-02-13 0.34
375        TRI_2018-05-24 0.33
376        TRI_2018-05-30 0.31
377        TRI_2018-07-04 0.30
378        TRI_2020-01-02 0.30
379        TRI_2018-01-23 0.26
380        TRI_2018-03-13 0.26
381        TRI_2018-08-31 0.26
382        TRI_2018-12-30 0.26
383        TRI_2018-10-28 0.25
384        TRI_2021-05-07 0.25
385        TRI_2021-08-22 0.25
386        TRI_2018-11-19 0.24
387        TRI_2020-07-30 0.24
388        TRI_2020-03-13 0.23
389        TRI_2017-06-06 0.22
390        TRI_2018-11-03 0.22
391        TRI_2021-02-25 0.22
392        TRI_2021-08-31 0.22
393        TRI_2018-06-19 0.20
394        TRI_2021-07-03 0.19
395        TRI_2021-04-26 0.16
396        TRI_2017-04-28 0.14
397        TRI_2018-02-05 0.13
398        TRI_2020-05-21 0.13
399        TRI_2017-05-14 0.12
400        TRI_2020-06-13 0.12
401        TRI_2020-07-01 0.12
402        TRI_2021-05-29 0.12
403        TRI_2018-05-09 0.07
404        TRI_2021-04-29 0.07
405        TRI_2021-08-23 0.07
406        TRI_2021-03-26 0.05
407        TRI_2021-09-12 0.05
408        TRI_2017-01-01 0.00
409        TRI_2017-01-03 0.00
410        TRI_2017-01-04 0.00
411        TRI_2017-01-05 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)