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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 :

Châtillon‑en‑Diois (72 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_2017-03-12 50.31
2        TRI_2017-09-29 42.87
3        TRI_2018-08-13 31.78
4        TRI_2018-04-19 29.42
5        TRI_2017-08-27 29.06
6        TRI_2021-04-01 28.87
7        TRI_2020-10-31 27.45
8        TRI_2017-09-28 26.70
9        TRI_2018-09-26 24.63
10        TRI_2018-09-27 22.57
11        TRI_2018-06-30 21.07
12        TRI_2020-04-01 21.02
13        TRI_2020-04-18 20.55
14        TRI_2020-05-22 18.81
15        TRI_2020-03-20 18.14
16        TRI_2018-08-29 17.07
17        TRI_2018-03-12 16.70
18        TRI_2017-06-22 15.70
19        TRI_2017-08-08 15.33
20        TRI_2018-09-30 14.73
21        TRI_2020-04-10 14.21
22        TRI_2017-12-15 13.72
23        TRI_2017-12-14 13.53
24        TRI_2020-09-23 13.44
25        TRI_2017-06-28 13.15
26        TRI_2020-04-24 12.63
27        TRI_2021-04-25 12.62
28        TRI_2018-09-21 12.45
29        TRI_2021-03-07 11.99
30        TRI_2021-05-31 11.95
31        TRI_2020-05-31 11.61
32        TRI_2020-03-21 11.41
33        TRI_2017-06-21 10.81
34        TRI_2020-08-09 10.74
35        TRI_2021-03-30 10.62
36        TRI_2018-04-23 10.52
37        TRI_2020-04-26 10.52
38        TRI_2018-07-27 10.41
39        TRI_2018-07-24 10.27
40        TRI_2017-09-30 10.06
41        TRI_2020-03-24 9.99
42        TRI_2021-03-29 9.83
43        TRI_2020-09-05 9.79
44        TRI_2021-11-02 9.78
45        TRI_2020-03-19 9.67
46        TRI_2020-07-20 9.62
47        TRI_2017-08-23 9.61
48        TRI_2018-05-25 9.57
49        TRI_2018-06-07 9.57
50        TRI_2018-05-31 9.53
51        TRI_2018-01-18 9.26
52        TRI_2021-06-22 9.18
53        TRI_2017-12-30 8.99
54        TRI_2018-08-16 8.99
55        TRI_2017-06-09 8.94
56        TRI_2020-10-05 8.87
57        TRI_2018-10-28 8.47
58        TRI_2018-05-21 8.45
59        TRI_2018-09-05 8.41
60        TRI_2020-04-11 8.28
61        TRI_2017-07-08 8.27
62        TRI_2018-04-20 8.22
63        TRI_2018-07-14 8.17
64        TRI_2020-05-11 7.97
65        TRI_2020-06-11 7.65
66        TRI_2018-12-13 7.56
67        TRI_2017-07-20 7.45
68        TRI_2018-01-03 7.37
69        TRI_2020-04-22 7.27
70        TRI_2020-08-19 7.12
71        TRI_2017-07-07 7.07
72        TRI_2018-11-30 7.00
73        TRI_2021-08-15 6.78
74        TRI_2021-09-23 6.75
75        TRI_2018-01-31 6.55
76        TRI_2020-04-23 6.43
77        TRI_2020-09-21 6.41
78        TRI_2020-07-10 6.29
79        TRI_2020-06-04 6.26
80        TRI_2018-06-04 6.18
81        TRI_2017-09-26 6.13
82        TRI_2018-03-03 6.05
83        TRI_2018-04-27 6.05
84        TRI_2020-11-01 6.02
85        TRI_2018-05-23 6.00
86        TRI_2018-09-10 5.97
87        TRI_2021-04-21 5.88
88        TRI_2020-09-15 5.87
89        TRI_2020-07-27 5.77
90        TRI_2020-04-25 5.70
91        TRI_2021-09-06 5.60
92        TRI_2018-06-20 5.56
93        TRI_2018-08-12 5.48
94        TRI_2021-10-17 5.39
95        TRI_2017-04-26 5.25
96        TRI_2020-08-28 5.04
97        TRI_2018-09-25 4.98
98        TRI_2017-07-29 4.97
99        TRI_2021-05-15 4.92
100        TRI_2018-05-08 4.90
101        TRI_2021-05-08 4.88
102        TRI_2017-08-02 4.78
103        TRI_2017-06-14 4.75
104        TRI_2021-08-13 4.71
105        TRI_2018-02-15 4.69
106        TRI_2017-10-13 4.67
107        TRI_2021-05-05 4.67
108        TRI_2018-06-03 4.65
109        TRI_2018-06-29 4.57
110        TRI_2017-12-12 4.51
111        TRI_2017-09-14 4.47
112        TRI_2021-12-28 4.46
113        TRI_2018-10-27 4.41
114        TRI_2018-08-06 4.39
115        TRI_2018-07-15 4.35
116        TRI_2021-08-21 4.34
117        TRI_2020-05-05 4.33
118        TRI_2018-07-28 4.26
119        TRI_2018-09-04 4.23
120        TRI_2018-05-06 4.21
121        TRI_2017-05-30 4.18
122        TRI_2018-09-06 4.17
123        TRI_2017-05-06 4.06
124        TRI_2018-10-26 4.02
125        TRI_2018-04-21 3.98
126        TRI_2021-02-14 3.97
127        TRI_2020-05-23 3.92
128        TRI_2017-08-13 3.86
129        TRI_2017-06-13 3.85
130        TRI_2021-10-18 3.77
131        TRI_2018-05-07 3.69
132        TRI_2018-07-20 3.67
133        TRI_2020-04-21 3.66
134        TRI_2021-04-20 3.65
135        TRI_2021-04-24 3.60
136        TRI_2018-09-18 3.55
137        TRI_2018-03-24 3.54
138        TRI_2018-09-09 3.51
139        TRI_2020-02-27 3.45
140        TRI_2017-04-01 3.41
141        TRI_2021-07-30 3.40
142        TRI_2018-07-26 3.39
143        TRI_2017-12-06 3.36
144        TRI_2021-06-23 3.36
145        TRI_2020-09-20 3.30
146        TRI_2020-08-15 3.29
147        TRI_2020-01-03 3.25
148        TRI_2021-03-04 3.25
149        TRI_2020-06-02 3.23
150        TRI_2017-08-22 3.13
151        TRI_2018-04-14 3.13
152        TRI_2018-10-05 3.12
153        TRI_2017-06-11 3.08
154        TRI_2020-09-24 2.98
155        TRI_2018-11-24 2.96
156        TRI_2021-05-06 2.96
157        TRI_2021-03-11 2.93
158        TRI_2018-03-14 2.91
159        TRI_2020-12-07 2.90
160        TRI_2018-09-15 2.80
161        TRI_2021-12-25 2.71
162        TRI_2020-06-27 2.70
163        TRI_2021-12-20 2.70
164        TRI_2017-12-31 2.68
165        TRI_2021-11-20 2.67
166        TRI_2021-10-14 2.65
167        TRI_2020-12-31 2.53
168        TRI_2021-10-21 2.51
169        TRI_2017-06-20 2.49
170        TRI_2018-02-01 2.49
171        TRI_2017-11-25 2.46
172        TRI_2021-02-09 2.42
173        TRI_2017-08-28 2.38
174        TRI_2018-05-22 2.37
175        TRI_2018-12-30 2.33
176        TRI_2018-03-02 2.32
177        TRI_2020-07-29 2.29
178        TRI_2020-04-12 2.26
179        TRI_2020-07-31 2.23
180        TRI_2021-03-31 2.23
181        TRI_2020-04-09 2.22
182        TRI_2017-04-08 2.20
183        TRI_2020-07-01 2.20
184        TRI_2020-08-08 2.20
185        TRI_2017-08-18 2.18
186        TRI_2017-10-31 2.16
187        TRI_2021-09-09 2.16
188        TRI_2021-08-14 2.14
189        TRI_2021-11-11 2.12
190        TRI_2021-11-27 2.12
191        TRI_2018-02-27 2.10
192        TRI_2020-01-10 2.08
193        TRI_2021-04-27 2.05
194        TRI_2020-08-07 2.00
195        TRI_2020-11-18 1.98
196        TRI_2018-06-02 1.96
197        TRI_2020-03-23 1.96
198        TRI_2017-10-14 1.90
199        TRI_2021-04-26 1.90
200        TRI_2021-02-07 1.81
201        TRI_2021-02-23 1.81
202        TRI_2018-01-23 1.80
203        TRI_2017-06-30 1.79
204        TRI_2018-06-09 1.76
205        TRI_2020-03-26 1.74
206        TRI_2017-08-07 1.69
207        TRI_2017-11-02 1.68
208        TRI_2020-03-18 1.64
209        TRI_2017-02-25 1.62
210        TRI_2017-05-19 1.62
211        TRI_2017-08-31 1.62
212        TRI_2021-09-05 1.61
213        TRI_2020-03-16 1.60
214        TRI_2021-01-29 1.57
215        TRI_2018-11-25 1.56
216        TRI_2017-05-04 1.55
217        TRI_2018-11-19 1.53
218        TRI_2017-07-04 1.52
219        TRI_2021-06-26 1.41
220        TRI_2017-05-09 1.40
221        TRI_2021-09-26 1.39
222        TRI_2018-12-16 1.38
223        TRI_2018-07-03 1.37
224        TRI_2018-06-11 1.35
225        TRI_2017-09-27 1.30
226        TRI_2021-12-10 1.29
227        TRI_2021-05-11 1.28
228        TRI_2021-08-23 1.27
229        TRI_2020-10-18 1.26
230        TRI_2018-02-06 1.25
231        TRI_2020-05-15 1.25
232        TRI_2020-09-16 1.22
233        TRI_2018-01-10 1.21
234        TRI_2020-04-30 1.21
235        TRI_2020-08-06 1.21
236        TRI_2017-03-22 1.20
237        TRI_2020-05-01 1.19
238        TRI_2020-10-04 1.18
239        TRI_2020-12-24 1.18
240        TRI_2018-10-06 1.17
241        TRI_2017-09-09 1.16
242        TRI_2020-08-11 1.15
243        TRI_2020-06-01 1.13
244        TRI_2017-05-03 1.09
245        TRI_2017-06-05 1.09
246        TRI_2017-12-07 1.08
247        TRI_2020-12-12 1.07
248        TRI_2017-03-05 1.06
249        TRI_2017-05-27 1.05
250        TRI_2017-02-23 1.03
251        TRI_2018-05-19 1.03
252        TRI_2020-05-12 1.00
253        TRI_2018-01-08 0.98
254        TRI_2017-01-25 0.96
255        TRI_2021-11-01 0.96
256        TRI_2018-04-12 0.94
257        TRI_2020-03-17 0.93
258        TRI_2020-05-30 0.93
259        TRI_2018-08-28 0.92
260        TRI_2021-12-21 0.91
261        TRI_2018-08-22 0.90
262        TRI_2017-04-23 0.89
263        TRI_2020-01-26 0.89
264        TRI_2021-07-27 0.89
265        TRI_2020-07-28 0.85
266        TRI_2017-07-03 0.84
267        TRI_2017-10-11 0.83
268        TRI_2017-11-15 0.83
269        TRI_2021-09-15 0.83
270        TRI_2021-11-03 0.83
271        TRI_2018-09-12 0.82
272        TRI_2021-04-08 0.82
273        TRI_2021-04-22 0.81
274        TRI_2018-09-17 0.80
275        TRI_2021-08-24 0.80
276        TRI_2020-06-13 0.79
277        TRI_2018-05-30 0.78
278        TRI_2018-08-31 0.78
279        TRI_2018-09-11 0.78
280        TRI_2021-11-14 0.76
281        TRI_2018-06-08 0.75
282        TRI_2017-12-08 0.74
283        TRI_2020-11-09 0.73
284        TRI_2020-01-13 0.68
285        TRI_2018-02-16 0.65
286        TRI_2020-06-23 0.65
287        TRI_2021-08-12 0.64
288        TRI_2020-09-14 0.62
289        TRI_2017-05-05 0.57
290        TRI_2018-08-17 0.57
291        TRI_2018-09-20 0.54
292        TRI_2018-07-12 0.53
293        TRI_2021-05-24 0.53
294        TRI_2021-10-24 0.53
295        TRI_2020-07-30 0.52
296        TRI_2020-12-27 0.49
297        TRI_2017-02-15 0.47
298        TRI_2017-02-03 0.45
299        TRI_2017-06-29 0.45
300        TRI_2017-03-02 0.43
301        TRI_2018-01-05 0.43
302        TRI_2020-05-27 0.43
303        TRI_2018-04-26 0.42
304        TRI_2021-07-22 0.41
305        TRI_2018-07-19 0.40
306        TRI_2021-07-29 0.39
307        TRI_2018-11-04 0.38
308        TRI_2017-06-08 0.37
309        TRI_2017-06-27 0.37
310        TRI_2018-07-05 0.37
311        TRI_2021-06-16 0.37
312        TRI_2017-05-24 0.36
313        TRI_2017-07-21 0.36
314        TRI_2018-10-29 0.36
315        TRI_2020-04-02 0.36
316        TRI_2017-05-14 0.35
317        TRI_2020-07-21 0.35
318        TRI_2021-03-06 0.35
319        TRI_2017-04-09 0.33
320        TRI_2018-05-24 0.33
321        TRI_2017-10-20 0.32
322        TRI_2021-07-04 0.32
323        TRI_2020-05-04 0.31
324        TRI_2021-08-31 0.31
325        TRI_2017-03-15 0.30
326        TRI_2017-04-07 0.30
327        TRI_2020-06-24 0.30
328        TRI_2021-06-24 0.30
329        TRI_2017-06-02 0.27
330        TRI_2018-11-03 0.27
331        TRI_2018-08-15 0.26
332        TRI_2017-07-28 0.24
333        TRI_2020-07-19 0.19
334        TRI_2021-02-08 0.19
335        TRI_2021-08-04 0.18
336        TRI_2018-03-05 0.17
337        TRI_2020-08-13 0.16
338        TRI_2021-07-28 0.16
339        TRI_2020-06-10 0.14
340        TRI_2017-04-28 0.13
341        TRI_2017-09-25 0.11
342        TRI_2021-08-30 0.11
343        TRI_2021-03-03 0.08
344        TRI_2017-02-05 0.04
345        TRI_2017-01-01 0.00
346        TRI_2017-01-02 0.00
347        TRI_2017-01-03 0.00
348        TRI_2017-01-04 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)