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Dose modeling and assessments

The Oak Ridge Institute for Science and Education (ORISE) offers dose modeling and assessment services to demonstrate that federal and/or state regulatory compliance requirements are being met during the decontamination and decommissioning of nuclear facilities. Dose modeling is an important step in the assessment of safety and regulatory compliance, as well as the development of standards and regulatory rulemaking.

The ultimate goal of dose modeling and assessments is to ensure that radiological dose is “As Low As Reasonably Achievable” (ALARA). To make the most accurate assessments, our health physicists use a variety of technical methods to evaluate and determine a solid dose estimate to ensure the safety of workers, the public and the environment.

ORISE also provides dose modeling and assessments in support of radiological facility audits. Ensuring that a site or facility will meet regulatory compliance requires a thorough and accurate estimate of cleanup levels for soil and surface contamination, also referred to as derived concentration guideline levels (DCGLs). We use industry-accepted software and site-specific data, such as RESRAD-BUILD, Visual Sample Plan (VSP), Microshield, and MCNP to develop an accurate assessment of contamination levels.

A few examples of projects in which ORISE staff have participated include:

  • Derivation of DCGLs for the Curtis Bay and Hammond depots
  • Vermont Yankee Nuclear Power Station dose assessment study
  • Radium timepiece dose modeling

Nuclear power plant