Nuclear Technology Laboratory
Department of Electrical & Computer Engineering,
Aristotle University of Thessaloniki,
Macedonia, Greece.

Nuclear Technology Laboratory

Location: Aristotle University Thessaloniki, Nuclear Technology Laboratory

40o 37' 38.26'' N, 22o 57' 35.23'' E

I-131 in Air

Filter code number

start-stop air sampling

I-131

(micro Bq per m3)

1 23-3-2011 13:00 - 24-3-2011 16:00 not detectable (<14)
2 24-3-2011 16:00 - 25-3-2011 15:00 171
3 25-3-2011 15:00 - 26-3-2011 11:00 115
4 26-3-2011 11:00 - 27-3-2011 11:00 223
5 27-3-2011 11:00 - 28-3-2011 12:00 372
6 28-3-2011 12:00 - 29-3-2011 12:00   127   
7 29-3-2011 12:00 - 30-3-2011 11:00     87   
8 30-3-2011 11:00 - 31-3-2011 11:00 240
9 31-3-2011 11:30 - 01-4-2011 11:30 270
10 01-4-2011 12:30 - 02-4-2011 10:30 271
11 02-4-2011 10:30 - 03-4-2011 10:30 142
12 03-4-2011 10:30 - 04-4-2011 10:30 379
13 04-4-2011 11:00 - 05-4-2011 11:00 408
14 05-4-2011 12:15 - 06-4-2011 12:15 336
15 06-4-2011 12:15 - 07-4-2011 11:00 209
16 07-4-2011 11:00- 08-4-2011 11:00 334
17 08-4-2011 11:30- 09-4-2011 11:30 219
18 09-4-2011 13:00- 10-4-2011 12:00 170
19 10-4-2011 12:00- 11-4-2011 11:00 190
20 11-4-2011 11:00- 12-4-2011 11:00 226
21 12-4-2011 12:15 - 13-4-2011 12:15 209
22 13-4-2011 12:30 - 14-4-2011 10:45 102
23 14-4-2011 10:45 - 15-4-2011 10:45 41
24 15-4-2011 12:00 - 16-4-2011 12:00 42
25 16-4-2011 13:30 - 17-4-2011 11:15 63
26 17-4-2011 11:15 - 18-4-2011 11:15 64
27 18-4-2011 11:15 - 19-4-2011 10:00 56
28 19-4-2011 10:00 - 20-4-2011 10:00 60
29 20-4-2011 10:00 - 21-4-2011 10:00 68
30 21-4-2011 10:00 - 22-4-2011 9:15 76
31 22-4-2011 9:15 - 23-4-2011 9:15 39
32 23-4-2011 10:00 - 24-4-2011 10:00 not detectable (<14)
33 24-4-2011 11:30 - 25-4-2011 10:45 not detectable (<14)
34 25-4-2011 10:45 - 26-4-2011 10:45 26
35 26-4-2011 11:00 - 27-4-2011 11:00 25
36 27-4-2011 11:30 - 28-4-2011 11:00 not detectable (<14)
37 28-4-2011 11:00 - 29-4-2011 11:00 19
38 29-4-2011 10:00-30-04-2011 10:00 not detectable (<14)
39 30-04-2011 10:00 -01-05-2011 10:00 not detectable (<14)
40 3-05-2011 13:00 -04-05-2011 12:30 not detectable (<14)
41 4-05-2011 12:30 -05-05-2011 11:30 not detectable (<14)
42 5-05-2011 13:30 -06-05-2011 13:00 not detectable (<14)
     

 

 

 

Cs  in Air

Filter Code Number

Cs-137 (micro Bq/ m3)

Cs-134 (micro Bq/ m3)

1-11

Not detectable (<17)

Not detectable (<17)

12

76

79

13 132 138
14 86 100
15 Not detectable (<17) Not detectable (<17)
16 25 24
17 Not detectable (<17) 26
18 24 Not detectable (<17)
20 44 49
21 33 42
22-26 Not detectable (<17) Not detectable (<17)
27 25 21
28-42 Not detectable (<17) Not detectable (<17)
     
     

Note1: Significance of these concentrations

The concentrations of  I-131, which arrived at the atmosphere of Greece, due to the nuclear accident at Fukushima, is of the order of 100 000 smaller than the relevant concentrations in the atmosphere of certain regions in Greece, on May 1986, due to the Chernobyl nuclear accident.

Suppose that such concentrations of I-131 remain in the atmosphere of Greece for one year, which is highly improbable. Then the additional yearly dose from I-131 will be hundreds of thousands   times smaller than the yearly dose from natural radiation.

 

Similar  remarks hold for the Cs concentrations, also .

Note2: The safety of BWRs at Fukushima (Η ασφάλεια των αντιδραστήρων ζέοντος ύδατος στην Φουκουσίμα )


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