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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 :

Montpellier (106 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_2021-02-04 124.16
2        TRI_2017-03-16 113.45
3        TRI_2020-11-22 82.37
4        TRI_2017-10-13 66.85
5        TRI_2018-09-05 62.57
6        TRI_2021-12-24 60.13
7        TRI_2021-12-25 59.18
8        TRI_2018-06-20 56.66
9        TRI_2018-04-27 55.16
10        TRI_2017-06-11 53.34
11        TRI_2020-11-12 52.13
12        TRI_2018-08-16 50.65
13        TRI_2020-01-26 50.31
14        TRI_2020-03-22 49.95
15        TRI_2018-10-19 48.55
16        TRI_2017-09-21 47.38
17        TRI_2018-02-16 44.89
18        TRI_2018-11-15 43.31
19        TRI_2018-11-14 42.90
20        TRI_2020-11-27 42.90
21        TRI_2021-11-20 42.48
22        TRI_2021-11-25 42.43
23        TRI_2017-08-22 41.21
24        TRI_2017-03-26 37.45
25        TRI_2017-12-06 36.50
26        TRI_2018-01-24 36.24
27        TRI_2018-09-20 34.86
28        TRI_2018-12-26 34.78
29        TRI_2018-09-16 34.06
30        TRI_2018-11-16 32.66
31        TRI_2017-07-21 31.70
32        TRI_2018-08-22 31.16
33        TRI_2017-11-01 30.90
34        TRI_2020-04-07 30.79
35        TRI_2018-06-04 30.77
36        TRI_2017-09-22 29.73
37        TRI_2020-10-31 29.47
38        TRI_2021-01-19 29.34
39        TRI_2020-03-25 29.00
40        TRI_2018-12-18 28.82
41        TRI_2018-05-30 28.75
42        TRI_2018-12-13 28.33
43        TRI_2018-01-13 26.52
44        TRI_2017-02-15 26.39
45        TRI_2021-03-26 24.70
46        TRI_2018-11-22 24.43
47        TRI_2020-03-18 23.49
48        TRI_2021-10-24 23.36
49        TRI_2021-10-27 23.00
50        TRI_2020-03-17 22.68
51        TRI_2020-11-24 22.68
52        TRI_2018-07-14 22.54
53        TRI_2018-05-06 21.97
54        TRI_2020-11-28 21.29
55        TRI_2020-10-19 21.28
56        TRI_2017-04-24 21.24
57        TRI_2020-01-06 20.60
58        TRI_2021-09-23 20.52
59        TRI_2021-09-26 20.44
60        TRI_2018-09-04 19.32
61        TRI_2020-04-04 19.29
62        TRI_2018-02-28 18.27
63        TRI_2021-12-17 18.23
64        TRI_2021-11-24 18.16
65        TRI_2017-05-16 17.85
66        TRI_2020-02-15 17.78
67        TRI_2018-04-18 17.73
68        TRI_2021-04-23 17.60
69        TRI_2018-07-15 17.29
70        TRI_2021-10-14 16.91
71        TRI_2020-05-14 16.74
72        TRI_2021-09-03 16.23
73        TRI_2018-08-12 16.17
74        TRI_2021-08-12 16.09
75        TRI_2017-11-03 16.06
76        TRI_2018-10-16 15.87
77        TRI_2021-10-17 15.87
78        TRI_2021-09-02 15.63
79        TRI_2017-01-26 15.56
80        TRI_2018-05-21 14.95
81        TRI_2017-09-26 14.37
82        TRI_2020-07-30 13.97
83        TRI_2018-10-09 13.60
84        TRI_2017-09-27 13.21
85        TRI_2018-09-28 13.04
86        TRI_2017-05-05 12.84
87        TRI_2018-04-14 12.71
88        TRI_2020-11-06 12.41
89        TRI_2020-04-21 12.00
90        TRI_2018-09-11 11.98
91        TRI_2020-08-06 11.97
92        TRI_2017-03-25 11.92
93        TRI_2020-03-23 11.78
94        TRI_2017-06-13 11.49
95        TRI_2020-06-23 11.26
96        TRI_2018-09-03 11.01
97        TRI_2017-10-31 11.00
98        TRI_2018-05-28 10.77
99        TRI_2017-07-04 10.63
100        TRI_2017-01-20 10.35
101        TRI_2018-11-18 10.33
102        TRI_2021-08-10 10.09
103        TRI_2018-11-08 9.89
104        TRI_2017-06-26 9.82
105        TRI_2018-08-28 9.77
106        TRI_2020-01-23 9.66
107        TRI_2018-07-24 9.65
108        TRI_2020-02-06 9.52
109        TRI_2017-03-30 9.42
110        TRI_2020-07-29 9.36
111        TRI_2020-05-13 9.32
112        TRI_2017-10-04 9.29
113        TRI_2020-01-24 9.03
114        TRI_2018-11-19 8.99
115        TRI_2018-07-26 8.95
116        TRI_2018-09-09 8.91
117        TRI_2020-09-20 8.85
118        TRI_2020-01-22 8.84
119        TRI_2017-01-03 8.69
120        TRI_2018-11-21 8.47
121        TRI_2020-04-22 8.43
122        TRI_2018-09-10 8.40
123        TRI_2021-01-09 8.21
124        TRI_2018-02-05 8.05
125        TRI_2020-09-03 8.05
126        TRI_2018-07-30 7.98
127        TRI_2020-05-11 7.98
128        TRI_2018-10-17 7.94
129        TRI_2020-09-15 7.85
130        TRI_2021-12-18 7.82
131        TRI_2018-04-21 7.77
132        TRI_2020-08-15 7.75
133        TRI_2018-07-29 7.72
134        TRI_2021-02-12 7.67
135        TRI_2020-07-19 7.50
136        TRI_2018-02-04 7.46
137        TRI_2018-07-16 7.43
138        TRI_2017-05-10 7.34
139        TRI_2020-01-21 7.22
140        TRI_2018-11-20 7.07
141        TRI_2018-02-19 7.02
142        TRI_2017-06-08 6.88
143        TRI_2021-12-22 6.84
144        TRI_2017-04-21 6.71
145        TRI_2020-05-27 6.65
146        TRI_2018-04-20 6.49
147        TRI_2020-03-15 6.43
148        TRI_2018-05-20 6.40
149        TRI_2017-07-29 6.37
150        TRI_2021-07-20 6.37
151        TRI_2021-07-22 6.37
152        TRI_2018-10-05 6.22
153        TRI_2020-05-04 6.10
154        TRI_2018-09-25 6.07
155        TRI_2021-09-05 6.04
156        TRI_2017-06-14 6.00
157        TRI_2020-09-09 5.90
158        TRI_2020-07-27 5.89
159        TRI_2020-09-04 5.77
160        TRI_2021-01-04 5.64
161        TRI_2018-06-02 5.43
162        TRI_2018-06-26 5.39
163        TRI_2021-04-22 5.39
164        TRI_2017-10-25 5.38
165        TRI_2021-03-04 5.31
166        TRI_2018-08-04 5.19
167        TRI_2020-01-12 5.10
168        TRI_2018-11-13 4.83
169        TRI_2020-12-17 4.76
170        TRI_2020-09-17 4.66
171        TRI_2020-11-05 4.64
172        TRI_2017-04-29 4.53
173        TRI_2021-11-11 4.52
174        TRI_2021-07-19 4.43
175        TRI_2020-11-23 4.38
176        TRI_2017-04-08 4.34
177        TRI_2021-10-01 4.32
178        TRI_2021-12-21 4.20
179        TRI_2018-06-01 4.13
180        TRI_2018-01-27 3.96
181        TRI_2021-10-09 3.80
182        TRI_2020-08-08 3.79
183        TRI_2017-04-07 3.53
184        TRI_2021-05-30 3.53
185        TRI_2020-08-19 3.48
186        TRI_2017-05-03 3.45
187        TRI_2017-06-18 3.34
188        TRI_2020-05-22 3.29
189        TRI_2020-05-07 3.27
190        TRI_2020-04-19 3.21
191        TRI_2020-01-05 3.16
192        TRI_2017-04-26 3.12
193        TRI_2020-03-31 3.02
194        TRI_2021-04-30 3.02
195        TRI_2020-05-25 2.71
196        TRI_2017-03-15 2.63
197        TRI_2017-12-31 2.63
198        TRI_2018-04-09 2.62
199        TRI_2021-03-06 2.59
200        TRI_2021-11-19 2.59
201        TRI_2021-06-15 2.54
202        TRI_2018-01-08 2.51
203        TRI_2020-04-09 2.49
204        TRI_2021-06-14 2.49
205        TRI_2020-01-02 2.48
206        TRI_2017-09-04 2.42
207        TRI_2018-11-17 2.40
208        TRI_2018-08-05 2.38
209        TRI_2018-09-15 2.35
210        TRI_2020-04-01 2.35
211        TRI_2021-09-24 2.35
212        TRI_2017-01-19 2.33
213        TRI_2021-10-28 2.33
214        TRI_2017-02-17 2.32
215        TRI_2017-11-15 2.32
216        TRI_2020-03-24 2.32
217        TRI_2020-01-13 2.31
218        TRI_2018-06-19 2.29
219        TRI_2018-04-12 2.28
220        TRI_2020-11-21 2.26
221        TRI_2018-08-17 2.20
222        TRI_2021-11-23 2.20
223        TRI_2017-08-07 2.18
224        TRI_2018-02-06 2.14
225        TRI_2021-04-21 2.12
226        TRI_2020-04-08 2.06
227        TRI_2021-02-28 1.99
228        TRI_2020-09-13 1.94
229        TRI_2021-05-29 1.91
230        TRI_2020-09-10 1.86
231        TRI_2017-04-01 1.82
232        TRI_2017-03-29 1.80
233        TRI_2018-04-19 1.78
234        TRI_2018-10-04 1.75
235        TRI_2018-08-03 1.74
236        TRI_2017-05-24 1.69
237        TRI_2017-08-27 1.68
238        TRI_2020-04-14 1.64
239        TRI_2020-05-12 1.59
240        TRI_2017-07-03 1.58
241        TRI_2021-09-22 1.58
242        TRI_2017-07-20 1.56
243        TRI_2021-06-26 1.53
244        TRI_2021-09-01 1.53
245        TRI_2017-06-09 1.52
246        TRI_2018-06-07 1.47
247        TRI_2021-11-16 1.40
248        TRI_2020-03-29 1.36
249        TRI_2018-05-01 1.34
250        TRI_2018-08-21 1.34
251        TRI_2017-04-20 1.33
252        TRI_2020-09-08 1.32
253        TRI_2017-03-12 1.30
254        TRI_2020-07-28 1.28
255        TRI_2021-10-25 1.28
256        TRI_2017-10-24 1.20
257        TRI_2020-03-16 1.18
258        TRI_2021-11-09 1.18
259        TRI_2021-04-20 1.17
260        TRI_2020-05-29 1.16
261        TRI_2021-03-28 1.15
262        TRI_2021-08-11 1.12
263        TRI_2021-01-03 1.10
264        TRI_2017-01-28 1.08
265        TRI_2021-04-08 1.07
266        TRI_2017-05-04 1.06
267        TRI_2021-04-04 1.06
268        TRI_2020-11-03 1.04
269        TRI_2018-06-28 1.02
270        TRI_2018-12-30 1.02
271        TRI_2020-01-19 1.02
272        TRI_2017-02-16 1.01
273        TRI_2021-02-14 0.99
274        TRI_2021-04-01 0.91
275        TRI_2021-04-29 0.89
276        TRI_2020-03-21 0.88
277        TRI_2021-11-14 0.88
278        TRI_2020-04-24 0.87
279        TRI_2020-11-11 0.86
280        TRI_2021-05-27 0.86
281        TRI_2018-05-19 0.85
282        TRI_2021-10-08 0.85
283        TRI_2017-08-28 0.83
284        TRI_2017-01-21 0.82
285        TRI_2018-10-08 0.82
286        TRI_2021-07-28 0.79
287        TRI_2018-09-27 0.78
288        TRI_2021-12-20 0.78
289        TRI_2021-07-04 0.76
290        TRI_2020-02-13 0.75
291        TRI_2017-04-23 0.73
292        TRI_2020-04-13 0.73
293        TRI_2017-01-02 0.72
294        TRI_2017-05-09 0.72
295        TRI_2017-01-25 0.71
296        TRI_2017-02-25 0.71
297        TRI_2021-03-07 0.70
298        TRI_2021-08-31 0.70
299        TRI_2020-01-08 0.68
300        TRI_2020-05-28 0.68
301        TRI_2018-01-07 0.65
302        TRI_2021-02-09 0.65
303        TRI_2017-11-02 0.63
304        TRI_2021-03-27 0.63
305        TRI_2018-01-10 0.62
306        TRI_2018-10-22 0.61
307        TRI_2021-07-21 0.61
308        TRI_2017-04-30 0.59
309        TRI_2017-06-10 0.59
310        TRI_2018-06-25 0.59
311        TRI_2021-02-26 0.57
312        TRI_2021-05-08 0.57
313        TRI_2020-09-16 0.54
314        TRI_2018-02-15 0.53
315        TRI_2018-10-07 0.53
316        TRI_2020-12-31 0.53
317        TRI_2017-08-31 0.52
318        TRI_2020-03-26 0.51
319        TRI_2017-03-02 0.50
320        TRI_2020-05-23 0.45
321        TRI_2018-07-20 0.44
322        TRI_2021-03-23 0.43
323        TRI_2018-05-13 0.42
324        TRI_2018-11-25 0.42
325        TRI_2017-08-18 0.41
326        TRI_2020-04-23 0.40
327        TRI_2018-03-24 0.37
328        TRI_2020-02-14 0.37
329        TRI_2017-08-13 0.36
330        TRI_2021-04-02 0.34
331        TRI_2020-08-07 0.33
332        TRI_2018-02-26 0.32
333        TRI_2020-07-31 0.32
334        TRI_2020-09-07 0.32
335        TRI_2021-08-24 0.30
336        TRI_2018-04-05 0.29
337        TRI_2020-01-20 0.29
338        TRI_2017-12-23 0.28
339        TRI_2018-03-03 0.27
340        TRI_2017-05-21 0.25
341        TRI_2020-05-05 0.25
342        TRI_2021-07-27 0.22
343        TRI_2017-05-14 0.21
344        TRI_2018-10-27 0.21
345        TRI_2018-10-28 0.19
346        TRI_2018-02-27 0.18
347        TRI_2021-08-13 0.16
348        TRI_2020-11-17 0.15
349        TRI_2021-05-07 0.15
350        TRI_2017-07-07 0.13
351        TRI_2018-05-07 0.12
352        TRI_2018-07-12 0.12
353        TRI_2018-08-10 0.11
354        TRI_2020-08-05 0.11
355        TRI_2017-03-13 0.09
356        TRI_2017-09-25 0.07
357        TRI_2017-11-05 0.07
358        TRI_2018-11-04 0.07
359        TRI_2020-12-21 0.07
360        TRI_2017-01-01 0.00
361        TRI_2017-01-04 0.00
362        TRI_2017-01-05 0.00
363        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)