Calculating Safe Distance for Unshielded Iridium-192 Source in Radiography

  • Thread starter Thread starter jhun guarico
  • Start date Start date
  • Tags Tags
    Calculation
Click For Summary
SUMMARY

The safe distance for an unshielded Iridium-192 (Ir-192) source in radiography can be calculated using the formula: Exposure rate = Gamma * Activity / distance². The specific gamma constant for Ir-192 is 4.8 R-cm²/hr mCi. This formula is applicable primarily for point sources or at distances far from distributed sources. It is advisable to consult health physicists who may have spreadsheets or tools for precise calculations.

PREREQUISITES
  • Understanding of gamma radiation and exposure rates
  • Familiarity with the concept of point sources in radiation
  • Knowledge of the specific gamma constant for Iridium-192
  • Basic proficiency in using formulas for radiation calculations
NEXT STEPS
  • Research the use of spreadsheets for radiation dose calculations
  • Learn about radiation shielding materials and their effectiveness
  • Explore the principles of radiation safety in industrial radiography
  • Investigate the role of health physicists in radiation protection
USEFUL FOR

Radiation safety officers, health physicists, radiographers, and anyone involved in the handling or application of Iridium-192 in radiography.

jhun guarico
Messages
2
Reaction score
0
Our source is iradium 192 what is the calculation or formula for the safe distance for unshielded source ?
 
Engineering news on Phys.org
Our source is iradium 192 what is the safe distance for unshielded source , any formula or calculation
 
You can use the specific gamma constant, which is only good for point sources or for distances far from distributed sources. The gamma constant for Ir-192 is 4.8 R-cm^2/hr mCi, and the formula is Exposure rate = Gamma*Activity/distance^2.
 
I'm curious, don't you have health physicists with spreadsheets to give you those numbers?
 

Similar threads

Replies
0
Views
2K
  • · Replies 2 ·
Replies
2
Views
3K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 2 ·
Replies
2
Views
3K
Replies
1
Views
3K
Replies
11
Views
24K
  • · Replies 7 ·
Replies
7
Views
3K
Replies
6
Views
875
  • · Replies 10 ·
Replies
10
Views
2K
Replies
12
Views
2K