Radiation Protection and Safety04/21/23 1

Radiation Protection

Objectives and standards Benefits and risks

Occupational (onsite) vs. Non-occupational (offsite)

Number of exposed people

ALARA principle

Radiation Protection and Safety04/21/23 2

Radiation Protection

National Council on Radiation Protection and Measurements (NCRP)

International Commission on Radiological Protection (ICRP)

Radiation Protection and Safety04/21/23 3

Radiation Protection Equivalent Dose: HT,R = wRDT,R

Radiation Protection and Safety04/21/23 4

Radiation Protection Effective Dose: E = Σ wTHT

Risk estimates

Dose constraints

Radiation Protection and Safety04/21/23 5

Radiation Protection

Intake limits

Transfer models

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Radiation Protection

Organ and tissueactivity over time

Short term and long term doses

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Radiation Protection Time, distance and shielding Buildup factor (B) used for gamma

rays: I = BIoe-μx

Radiation Protection and Safety04/21/23 8

Radiation Protection 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

Dose/year

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Radiation Protection

Experimental data

Application of Q inshielding design

WUT0.114Pd

Q2

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Radiation Protection

Beta & Bremmstrahlung

Neutrons