(Continued from Part 1.)
Exposure versus Contamination
I like reading survival articles and watching survival videos. One of the issues that I don’t see explained very well is the difference between exposure and contamination. As a corollary, imagine walking down a road and you see a pile of dog dung. You stop and you smell its nasty odor. In this case you have been exposed but not contaminated. Now imagine walking down the road and step in a pile of dog dung, now you are contaminated and exposed. Until you decontaminate (wash the dog dung off your boot) you will continue to be exposed.
There are three types of radiation you need to be concerned about, Alpha, Beta, and Gamma. Alpha is the weakest type and can be literally stopped a piece of paper used as shielding material. The main concern with Alpha radiation is ingestion or inhalation of alpha contamination. Your internal tissue is more sensitive to Alpha radiation and will absorb more of a dose internally versus that same Alpha particle that is outside of your body, say on your scalp. Beta radiation is more powerful than Alpha but is still relatively easy to block by shielding. Instead of a single piece of paper you will need a thick book to block Beta radiation.
Gamma radiation is the most penetrating radiation and you will need very thick and dense material, like concrete, or lead, or 3 feet of soil. There are several Internet sources that will provide you with the shielding properties of different materials. Something to keep in mind is that the volume of material can make up for lack of density. That is paper isn’t a very dense material for protecting against gamma radiation but if you had 6 feet of books it would still provide some level of protection due to the volume of material.
To protect yourself internally, use a simple dust mask, no real need for an N95 or P100 but I will say that most of the simple dust mask out there do NOT seal well in which case you may want to use an N95 for quality purposes.
Surviving Fallout
There are three ways you protect yourself from radiation, time, distance and shielding. You will want to reduce, as much as possible, the amount of time you are exposed to radiation. The next thing you want to remember and employ is distance. Think about and take into consideration where radioactive fallout may fall around you. For many of us, fallout will settle on our home roof and on the lawn next to our home. If you have a two-story home without a basement, you would want to shelter on the first floor in the most interior spot in the home. If you have a two-story home with a basement the center of the basement will be the optimum place to shelter. Why? Because this will allow you to be as far away from the fallout as possible. Going back to the dog dung example the closure you are the more pungent the smell, and as you increase your distance from in you smell it less. Next you will want to put as much dense mass between you and the fallout, aka shielding. Sand, dirt, stone, cement, metal, wood and even books can help block gamma rays.Continue reading“Thinking About the Unthinkable, Again – Part 2, by 3AD Scout”