Dirty Bombs
Stay in the shelter for at least 2 weeks. The heaviest fallout will occur within 24 hours of the detonation and radioactivity will gradually decrease but it will take time till it dissipates to safe levels - HWN
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Dirty Bombs and Nuclear Accidents, Are You Prepared?
When we think of dirty bombs, what comes to mind are what we’ve seen on films – that massive mushroom cloud and devastation... However, "a dirty bomb is an improvised nuclear device, created from radioactive nuclear waste material and conventional explosives. When a dirty bomb is detonated the explosion carries the nuclear waste material into the atmosphere where it is subject to dispersal by wind and rain. The aim of the dirty bomb is to cause wide-spread contamination of the target area. If detonated in a city a well designed dirty bomb could cause panic, radiation-related illnesses (both long-term and short-term) and possibly the abandonment or demolition of highly contaminated areas". In…Featured
Dirty bombs: The terror and the truth
Dirty bombs, or radiation dispersal devices (RDDs), use conventional methods like car bombs to disperse radioactive materials in populated economic districts, such as lower Manhattan. The point is to cause great economic and social disruption disproportionate to the actual radiological effects—and well beyond the physical destruction from the conventional bomb components. Society’s irrational fear of radiation makes the dirty bomb an ultimate weapon of terror. But it is a psychological weapon, not a nuclear one. The public should not be any more afraid of a dirty bomb than they are of an ordinary car bomb.
Articles of Interest
Backgrounder on Dirty Bombs
A "dirty bomb" is a type of "radiological dispersal device" that combines a conventional explosive, such as dynamite, with radioactive material. The terms dirty bomb and RDD are often used interchangeably. Most RDDs would not release enough radiation to kill people or cause severe illness – the conventional explosive itself would be more harmful to people than the radioactive material. However, an RDD explosion could create fear and panic, contaminate property and require potentially costly cleanup.
Dirty Bombs: Frequently Asked Questions
The main danger from a dirty bomb is from the explosion, which can cause serious injuries and property damage for people close to the explosion. The radioactive materials used in a dirty bomb would probably not create enough radiation exposure to cause immediate serious illness, except to people who are very close to the blast site.
Explainer: What is a dirty bomb and how dangerous is it?
Although dirty bombs do not produce catastrophic explosions they can nevertheless be deadly. Radioactive materials produce ionising radiation which can destroy bodily tissues and create harmful mutations that lead to cancer. The danger posed by radioactive material depends on the means of exposure and type of radiation it produces. Alpha radiation is harmful only if inhaled or ingested, while other types – known as beta and gamma radiation – can penetrate and damage human tissue even if the material is external to the body.
How To Survive a Dirty Bomb
For technical reasons having to do with the types of radiation involved, potassium iodide pills would likely be effective for true nuclear attacks or nuclear power plant leaks—but not effective for dirty bombs. Obviously, if you suspect acute radiation poisoning (symptoms: nausea, vomiting, diarrhea, hair loss), you should seek immediate medical attention.
Inside the Uranium Underworld: Dark Secrets, Dirty Bombs
The danger from dirty bombs is spreading even faster. For starters, they pose none of the technical challenges of splitting an atom. Chaduneli’s type of uranium was particularly hard to come by, but many hospitals and other industries use highly radioactive materials for medical imaging and other purposes. If these toxic substances are packed around conventional explosives, a device no bigger than a suitcase could contaminate several city blocks—and potentially much more if the wind helps the fallout to spread.
The Zaporizhzhia nuclear power plant is a ‘dirty bomb’ waiting to happen – a nuclear expert explains
The radioactive release could possibly be at Chernobyl-scale or even larger amounts if multiple reactors and spent fuel ponds were involved. This could then spread across borders and continents with the wind, rivers and currents, and come down in hotspots in rain and snow.
What is a dirty bomb, and how dangerous is it?
“Dirty bombs” have long been feared as a potential weapon of terrorists, because their main objective is to sow panic, confusion and anxiety by hurling radioactive dust and smoke into the atmosphere.


