Transcript Slide 1
Radiation Protection
Objectives and standards
Occupational (onsite) vs. Non-occupational (offsite)
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Benefits and risks
Number of exposed people
ALARA principle
Radiation Protection and Safety
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Radiation Protection
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National Council on Radiation Protection and
Measurements (NCRP)
International Commission on Radiological
Protection (ICRP)
Radiation Protection and Safety
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Radiation Protection
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Equivalent Dose: HT,R = wRDT,R
Radiation Protection and Safety
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Radiation Protection
Effective Dose: E = Σ wTHT
Risk estimates
Dose constraints
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Radiation Protection and Safety
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Radiation Protection
Intake limits
Transfer models
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Radiation Protection and Safety
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Radiation Protection
Organ and tissue
activity over time
Short term and
long term doses
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Radiation Protection and Safety
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Radiation Protection
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Time, distance and shielding
Buildup factor (B) used for gamma rays: I = BIoe-μx
Radiation Protection and Safety
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Radiation Protection
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Calculating the shielding thickness (x)
Narrow beam of gamma rays (B = 1)
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Radiation Protection
X ray machines
Lead lining
Controlled and
uncontrolled areas
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Dose/year
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Radiation Protection
Experimental data
Application of Q in
shielding design
0.114Pd2
Q
WUT
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Radiation Protection and Safety
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Radiation Protection
Beta & Bremmstrahlung
Neutrons
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Radiation Protection and Safety
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