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While the explosive blast will be immediately obvious, the presence of radiation will not be known until trained personnel with specialized equipment are on the scene. They can be any protected space, provided that the walls and roof are thick and dense enough to absorb the radiation given off by fallout particles. But even a blast shelter cannot withstand a direct hit from a nuclear explosion.įallout shelters do not need to be specially constructed for protecting against fallout. The following describes the two kinds of shelters:​​īlast shelters are specifically constructed to offer some protection against blast pressure, initial radiation, heat, and fire. There are two kinds of shelters - blast and fallout. Taking shelter during an RDD event is absolutely necessary. If you live in an apartment building or high-rise, talk to the manager about the safest place in the building for sheltering and about providing for building occupants until it is safe to go out. If none have been designated, make your own list of potential shelters near your home, workplace, and school, such as basements, subways, tunnels, or the windowless center area of middle floors in high-rise buildings. To prepare for an RDD event, you should do the following:īuild an Emergency Supply Kit with the addition of duct tape and scissors.įind out from officials if any public buildings in your community have been designated as fallout shelters. There is no way of knowing how much warning time there will be before an attack by terrorists using a Radiological Dispersion Device (RDD), so being prepared in advance and knowing what to do and when is important. The area affected could be placed off-limits to the public for several months during cleanup efforts.

The size of the affected area and the level of destruction caused by an RDD would depend on the sophistication and size of the conventional bomb and other factors. Such RDDs appeal to terrorists because they require limited technical knowledge to build and deploy compared to a nuclear device.

It is designed to scatter dangerous and sub-lethal amounts of radioactive material over a general area. Mar.An RDD combines a conventional explosive device - such as a bomb - with radioactive material.