I posted this on another thread and though it should be here
WHERE ARE THE DAC readings.? ( Derived air concentration (DAC) The concentration of radioactive material in air that will result in an annual limit
of intake if an individual breathes that air for a year. No one has The DAC read outs that I have seen and the nuclear engineering forum where I was
discussing this, they are wondering about the DAC also. that is a very very very important reading that needs to be made public. You cannot assess
the area with just millisieverts per hour reading you need the DAC reading. So the Japanese are only giving half the information to the public.
I looked at that NHK Live clip again since I cannot capture it or pause it from the NHK frame. It looked like 100 on reading of that girl. but I
dont know the scale of the meter , I assume in millisieverts per hour .
I get 100 mSv/h according to the old scale. this is again is on the low side , but still high for a short time exposure for that girl on NHK. Even if
this reading is between 40 -50 Msv/h it's still a good shot of radiation for a short time. I think that girl was in Tokyo.
100 Msv/hr is about the exposue of a full body scan,one time. From what I remember from nuke weps school for Msv/ Hr basis is that that potassium
iodide pills should be distributed when the likely absorbed dose of radioactivity is 100 Msv/hr assuming that this the rate of exposure of this girl
on NHK live feed, the camera man took the camera away a little fast, but Im sure this meter was at 100 Msv/hr
Highest reported radiation beside reactor 3 at Fukushima I: 400 mSv/hr
Highest reported radiation at reactor 2, Fukushima I: 8 mSv/hr
I used this old scale conversion:
1 Sv = 1000 mSv (millisieverts) = 1,000,000 μSv (microsieverts) = 100 rem = 100,000 mrem (millirem)
1 mSv = 100 mrem = 0.1 rem
1 μSv = 0.1 mrem
1 rem = 0.01 Sv = 10 mSv
1 mrem = 0.00001 Sv = 0.01 mSv = 10 μSv
Anyone know the scale their using ?
T tera 10 to the 12th
G giga 10 to the 9th
M mega 10 to the sixth
k kilo 10 to the 3rd
c centi 10 to the minus 2nd
m milli 10 to the minus 3rd
� micro 10 to the minus 6th
n nano 10 to the minus 9th
edit on 17-3-2011 by SJE98 because: (no reason given)
edit on 17-3-2011 by SJE98 because: (no reason