Health effects Doses of 200 to 1,000 rad delivered in a few hours will cause serious illness with poor outlook at the upper end of the range. Whole body doses of more than 1,000 rad are almost invariably fatal.
Q. How many counts per minute is dangerous?
It’s normal to find a range of 7-30 CPM in surroundings. In my opinion, anything below 150 CPM is considered safe, but if the value overshoots this limit, the substance or atmosphere is dangerously radioactive.
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Q. How many mSv per hour is safe?
That’s 1,000 to 2,000 millisievert (mSv). Nausea and vomiting would generally occur within 24–48 hours after such an exposure. A severe dose of radiation would be anything over 3,500 mSv, and would bring on vomiting within an hour, as well as perhaps diarrhea, bloody vomit, high fever and eventual hair loss.
Q. How bad is 10 rads per hour?
Elevated radiation area – up to several hundreds of miles: from 0.01 R/hr to 10 R/hr (0.0001 to 0.1Gy/h), potentially hazardous, and cumulative radiation exposure should be monitored. Most people in the LD zone will survive on their own, but critical injuries may still exist.
Q. What is the highest amount of radiation a person can take?
The maximum permissible exposure for a person under 18 working with radiation is one-tenth the adult limit or not to exceed 500 millirems per year above the 300+ millirems of natural sources, plus medical radiation.
Q. How many rads are in a banana?
Plants naturally contain radioactive carbon-14 (14C), but in a banana containing 15 grams of carbon this would give off only about 3 to 5 low-energy beta rays per second. Since a typical banana contains about half a gram of potassium, it will have an activity of roughly 15 Bq.
Q. Do bananas cause radiation?
Some potassium is always taken in via the diet, and some is always excreted, meaning that there is no buildup of radioactive potassium. So, while bananas are indeed radioactive, the dose of radioactivity they deliver does not pose a risk.
Q. How many bananas can I eat before I die?
But for a healthy person, “it would be impossible to overdose on bananas,” says Collins. “You would probably need around 400 bananas a day to build up the kind of potassium levels that would cause your heart to stop beating… Bananas are not dangerous – and in fact they are, and always have been, very good for you.”
