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Related Experiment Videos

A comparison of skyshine computational methods.

Nolan E Hertel1, Jeremy E Sweezy, J Kenneth Shultis

  • 1Neely Nuclear Research Center, George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA. nolan.hertel@me.gatech.edu

Radiation Protection Dosimetry
|April 11, 2006
PubMed
Summary

This study modeled radiation skyshine from a silo and radioactive waste trench using various radiation transport and point-kernel codes. Results provide benchmark data for validating skyshine estimation methods.

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Area of Science:

  • Nuclear Engineering
  • Radiation Physics
  • Computational Physics

Background:

  • Skyshine, or radiation that travels upward and then down, is a critical factor in radiation shielding design.
  • Accurate modeling of skyshine is essential for assessing environmental radiation levels and ensuring public safety.
  • Existing methods for skyshine estimation require validation against benchmark problems.

Purpose of the Study:

  • To model and compare skyshine radiation from two distinct scenarios: a silo with a point source and a radioactive waste trench.
  • To benchmark various radiation transport and point-kernel codes against established problems.
  • To provide validated data for skyshine estimation in nuclear engineering applications.

Main Methods:

  • Modeling skyshine from a 1 MeV photon point source in a silo with and without a concrete lid.

Related Experiment Videos

  • Estimating skyshine radiation from 12 cylindrical radioactive waste canisters.
  • Employing multiple computational codes including MCNP, GGG-GP, QADMOD-GP, COHORT, SKYSHINE-III, and KSU codes.

    • Main Results:

    • Skyshine radiation was estimated for both benchmark problems using the selected codes.
    • Comparison of results from different codes provides insights into their accuracy and applicability.
    • The presence of a concrete lid on the silo significantly affects downfield skyshine.

    Conclusions:

    • The study successfully modeled two skyshine benchmark problems using a variety of computational methods.
    • The results offer valuable data for validating and improving radiation transport and point-kernel codes.
    • Accurate skyshine modeling is crucial for radiation safety assessments in nuclear facilities and waste management.