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Radiation Safety

Introduction
Background Information
X-Radiation
Gamma Radiation
Health Concerns

Radiation Theory
Nature of Radiation
Sources of High Energy
   Rad

Rad for Ind Radiography
Decay and Half-life
Energy, Activity, Intensity   and Exposure
Interaction with Matter
Ionization
Radiosensitivity
Measures Related to   Biological Effects

Biological Effects
Biological Factors
Stochastic (Delayed) Effects
  -Cancer
  -Leukemia
  -Genetic Effects
  -Cataracts

Nonstochastic (Acute) Effects
Symptoms

Safe Use of Radiation
NRC & Code of Federal
   Reg
s
Exposure Limits
Controlling Exposure
  -Time-Dose Calculation
  -Distance-Intensity Calc
HVL Shielding
Safety Controls
Responsibilities
Procedures

Survey Techniques

Radiation Safety Equipment
Radiation Detectors
Survey Meters
Pocket Dosimeter
Audible Alarm Rate Meters
Film Badges
Thermoluminescent
   Dosimeter

Video Clips

References

Quizzes

Dose = Dose Rate x Time

Example Calculations 1

A technician is in an area for 10 minutes and the reading on the survey meter is 5mR/h. What dose of radiation does the technician receive?

5mR/h / 60 min./h = 0.0833 mR/min.

0.0833 mR/min. x 10 minutes = 0.833 mR total dose.

Example Calculations 2

A technician wants to receive no more than a 1.0 mR dose knowing the above conditions. What is the maximum time the technician can stay in the area?

1.0 mR / 0.0833 mR/min. = 12 minutes

The calculated dosages would be approximations. The actual dosages may vary due to scattering and other considerations. The TLD or Film Badge should be used to determine dosage received by an individual.