Nuclear Technology Laboratory.

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

Nuclear Technology Laboratory

Location: Aristotle University Thessaloniki, Nuclear Technology Laboratory

40^o 37' 38.26'' N, 22^o 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 )