# is3_102 - detonation? O Step 1: Number of seven-fold...

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Unit 4 Nuclear Threat 4-15 Example Problem 2 If the exposure rate 5 hours after detonation is 200 R/hr, what will the exposure rate be 35 hours after detonation? O Step 1: There is one seven-fold increase in time after the detonation: (5 hours)(7) = 35 hours O Step 2: The expected magnitude of decrease in exposure rates is ten-fold (10 times itself once). O Step 3: The predicted exposure rate is 20 R/hr, which is 10 times less than the initial measurement of 200 R/hr. Predicted exposure rate = 200 R/hr 10 = 20 R/hr Example Problem 3 If the exposure rate 1 hour after detonation is 1,000 R/hr, what will the exposure rate be 49 hours after
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Unformatted text preview: detonation? O Step 1: Number of seven-fold increases in time =_____________________________ O Step 2: Magnitude of decrease =_____________________________ O Step 3: Predicted exposure rate =_____________________________ The correct answers for each step, and their solutions, are shown below: Step 1: Number of seven-fold increases in time = 2 (1 hour) (7) (7) = 49 hours Step 2: Magnitude of decrease = One hundred-fold (10) (10) = 100 Step 3: Predicted exposure rate = 10 R/hr 1000 R/hr = 10 R/hr 100...
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