The maximum radiation level to which workers can legally be exposed is 250 millisieverts per hour.
Tahiti, above, was exposed to 500 times the accepted maximum radiation level from nuclear tests in the 20th century, reports Le Parisien.
The standard for a mandatory evacuation at Fukushima was set at about 20 times the maximum radiation level allowed for normal operation.
However, perusal from data summarized in Tables 3 and 4 indicates that the power loss is found to be maximum using rice husk at different radiation levels 650 , 750and 850 W/m2, respectively.
ICRP 62 [20] recommended that the maximum radiation dose that causes a 'minor to intermediate' increase of risk levels while preserving social benefit levels that are 'intermediate to moderate' has an effective limit of 10 mSv/year [20, 21].
The operator, Tokyo Electric Power, said that workers on Monday afternoon had found an area near Reactors No. 1 and 2, where radiation levels exceeded their measuring device's maximum reading of 10 sieverts per hour — a fatal dose for humans.
In case of 25 g brick powder sample taken for study, the maximum power losses are observed to 58.37, 54.55 and 57.55% at radiation levels of 650 , 750and 850 W/m2, respectively.
Similarly, while using a 25 gm of fly ash sample the maximum power loss of 42.05, 43.33 and 43.36% have been observed at radiation levels of 650 , 750and 850 W/m2, respectively.
Data summarized in Table 3 indicate that in case of Badarpur sand 1 of 50 gm weight sample the maximum power losses of 59.31, 60.70 and 62.10% have been observed at radiation levels of 650 , 750and 850 W/m2, respectively.
However, in case of 25 g of rice husk sample the maximum power losses of 75.75, 75.88 and 72% have been observed under radiation levels of 650 , 750and 850 W/m2, respectively.
