Question 1
Selenium-75 is used in medicine to assist in diagnosing pancreatic cancer and decays solely by electron capture. The product of its decay is ______.
Question 2
The best means of personal protection from radiation for emergency responders is the implementation of three basic principles: time, distance, and shielding. Using the Inverse Square Law of radiation, what Geiger counter reading would you get for a radioactive material when you are four feet from the source (assume an initial reading of 6300 R at a distance of 1 foot from the source)?
Question 3
The DOT regulation at 49 C.F.R. §172.403 requires shippers to affix RADIOACTIVE YELLOW-III labels to a package having a transport index greater than 10 when the maximum radiation level at any point on the surface is greater than 2 mSv/h but less than or equal to 10 mSv/h. Are shippers required to affix RADIOACTIVE YELLOW-III labels to a package having a transport index greater than 10 if the maximum radiation level on its surface is measured to be 13 mrem/min? Yes, or No? 1) _________. What is 13 mrem/min in mSv/hr? 2) _____
Question 4
List two acute radiation effects caused by single-dose exposure to 3.0 Gy of radiation: 1) _____ and 2) ______
Question 5
The permissible exposure limit (PEL) over an 8-hr workday for trinitrotoluene and nitroglycerin are 1) _____ and 2) ______, respectively. Which of these explosives is more toxic? 3) ______.
Question 6
What are the products formed when nitroglycerin undergoes hydrolysis? 1) ____ and 2) _____.
Question 7
Potassium-42 is a radioisotope that nutritionists use to determine whether the body is effectively using potassium at the cellular level. The half-life of potassium-42 is 12.4 hours. Assuming that a patient’s cells assimilate all the potassium chloride tagged with potassium-42, approximately what percentage of the dose remains in 2.1 days?
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