You will need some way of measuring the amount of radiation you have absorbed. The following i gathered from a website "Bruce Beach Nuclear Survival Resources & Ark II Fallout Shelter Site" What these are is total amounts of radiation you have received (absorbed). There are literally hundreds of charts out there, that will tell you (as an estimated guess) how much radiation you will get if a bomb is detonated near you. But you have to know how close, wind speed, prevailing wind and a lot of other things. It is much simpler of you have a device that measures radiation. Start hereIf there was a nuclear attack how long would you need to stay underground before the amount of radiation is not dangerous and you can leave the bunker?
The following is interpreted from attached "official" and other "expert" sources. These sources often provide a 'range' for effects, but I have simplified this to a single number to make the table easier to memorize - and you should memorize it. You can then 'extrapolate' for your self the relative severity of effects of a number between a higher and lower number.
o 600R -- means 100% chance of fatality is expected.
Some much earlier - but last within two weeks.
o 400R -- means 50% will die within one to three weeks.
Those that don't die are going to be VERY sick and wish that they would. After a few days some may feel better but will often then turn, sicken and die in a few weeks.
o 200R -- lots of sickness, and radiation sickness is pretty terrible (Think of cancer treatment without pain killers.)
Lots of vomiting - hair falling out - and all that.
o 50R -- No fatalities at this level. There is a difference of opinion, as to whether the sickness at this level is physical. Some think, as for example in this very authoritative study, that at this level the sickness is psychosomatic. Whatever its cause it is very general.
o 30R -- Most everyone will feel some sickness -
- maybe just "punky" and it may be "just" psychomatic
but it certainly would not be beneficial for children
and pregnant mothers. Even this level is a thousand times higher than the maximum general population exposure permitted under peacetime standards.
they say that 2 weeks would be enough time for the fall out to reach a "safe" level. BUT..... theres no guarantee how long it would take for the fall out to settle and there are loads of factors that meen until it happens, there is no real way of knowing whether it would be an air or surface burst (surface bursts make more fall out), the direction of the wind during and after an attack, the power of the bomb used, the general weather etc etc.If there was a nuclear attack how long would you need to stay underground before the amount of radiation is not dangerous and you can leave the bunker?
If it is a very long time what would you do?
How do you know if a nuclear bomb is going to go off, because terrorists are very quiet about when they will attack?
Any ideas would be good.