Skip to main content

Whether your project requires the cleanup of a site, a facility or equipment contaminated with nuclear materials, your business needs to be able to rely on a respected, unbiased organization to ensure that remediation plans adequately assess radiological conditions.

ORAU is a leading provider of characterization, final status, and independent verification surveys of environmental cleanup. Our survey experience and expertise ensures high quality, defensible and cost-effective solutions for property release. Our staff of highly-skilled health physicists and radiation safety experts have performed independent environmental assessments and verification for federal and state agencies for more than 35 years, greatly enhancing public trust and instilling confidence in the decontamination and decommissioning of contaminated sites.

We are also nationally recognized for our radiation safety training and offer a full range of health physics capabilities that can help you protect your workers, the public and the environment from potential radiation hazards.

What we do

  • Independent verification
  • Radiological and chemical characterization surveys
  • Decontamination and decommissioning support
  • Health physics and radiation safety training
  • Final status surveys
  • Health physics and radiation safety training
  • Radiological dose modeling and risk assessments
  • Air quality research
  • Health physicist conducting survey on decommissioning project

    Decontamination & Decommissioning

    Our experts customize decontamination and decommissioning surveys to achieve high-quality, defensible data and ensure efficient and cost-effective cleanup. With high quality standards, ORAU survey results instill trust and confidence that public health and safety is protected following your site’s cleanup.

    Continue reading

  • Two workers conducting radiological and chemical characterization test

    Radiological & Chemical Characterization

    ORAU independently develops and implements radiological and chemical characterization survey plans for state and government agencies, as well as private sector organizations. The plans developed ensure the collection and assessment of the appropriate data quantity and quality necessary for confident decision making and controlling project scope uncertainties.

    Continue reading

  • nondestructive-assay.jpg

    Nondestructive Assay

    Our exeperienced health physicists and survey technicians use nondestructive assay (NDA) techniques and portable instrumentation to provide on-site analyses without physically altering contaminated equipment or compromising site safety.

    Continue reading

  • Two health physicists conducting radiological contamination assessment

    Final Status Survey & Property Release

    ORAU provides final status survey services designed to satisfy site-specific data quality and data assessment objectives. Radiological surface scans, measurement and sample data collected by our health physics experts are used to confirm that all release criteria conditions have been satisfied, and that potential risks from residual contamination and small areas of elevated activity are below the derived concentration guideline levels.

    Continue reading

  • Worker conducting independent verification test of radiological site

    Independent Environmental Verification

    In our efforts to support customers throughout the decontamination and decommissioning process, ORAU's independent team of health physicists provides assurance that remediation was effective and that all final status survey requirements have been accomplished and documented. The resulting data from verification helps to clearly demonstrate that all property release guidelines and criteria have been satisfied.

    Continue reading

  • Health physicist conducting radiation dose assessment

    Radiological Dose & Risk Assessments

    When the safety of your workers and the public is at stake, accurate and reliable health physics expertise is necessary to demonstrate compliance with federal and/or state regulations and guidelines regarding radiological exposure. ORAU’s highly-qualified health physicists perform site-specific radiation dose and risk assessments, using methods consistent with industry standards, to meet these regulatory requirements.

    Continue reading

  • Weather station in desert location

    Air Quality, Weather, & Climate Research

    As a part of NOAA’s Air Resources Laboratory, ORAU’s atmospheric scientists at ATDD provide engineering expertise on the development and deployment of instrumentation and data analysis for short intensive campaigns to multi-decade, nationwide climate monitoring stations and systems. 

    Continue reading

Radiation safety & health physics training

PTP sealORAU also offers some of the best radiation safety and health physics training available in the United States at our Oak Ridge, Tenn., facility. Whether you are just starting your career in the health physics field and want to learn in a hands-on, classroom environment, or are a seasoned professional who needs a refresher or way to develop new skills, our Professional Training Programs has a course for you!

  • Applied Health Physics Course instructor and students

    Applied Health Physics

    The use of radiation in industry, medicine, and education has created a need for persons trained in the principles of radiation safety and health physics. To meet this need, ORAU conducts a five-week training course—Applied Health Physics. The American Academy of Health Physics grants 40 Continuing Education Credits for completion of this course.

    View course page

  • Air Sampling

    Air Sampling for Radioactive Materials

    This five-day, laboratory-oriented course introduces participants to the basic theories and mechanics of air sampling for radionuclides. Approximately 40% of the time is spent collecting and analyzing air samples; the remaining time is devoted to lectures.

    View course page

  • Environmental Monitoring Course instructor and students in the field

    Environmental Monitoring

    This five-day, laboratory-oriented course introduces participants to the basic theories and mechanics of environmental monitoring for radioactivity. Approximately 50% of the time is spent collecting and analyzing samples; the remaining time is devoted to lectures.

    View course page

  • Gamma Spectroscopy Course instructor and students in classroom

    Gamma Spectroscopy

    This five-day, laboratory-oriented course covers the basics of radionuclide identification and quantification by gamma spectroscopy. Approximately 50% of the time will be spent in the laboratory.

    View course page

  • Health Physics Statistics Course instructor and students in classroom

    Health Physics Statistics

    This five-day course introduces participants to the use of statistics in operational health physics. The course is divided between lectures and practical laboratory activities designed to reinforce important principles. Core concepts such as probability distributions, descriptive statistics and hypothesis testing are included to support more detailed discussions on uncertainty propagation and statistical tests.

    View course page

  • Introduction to Radiation Safety Course student in lab

    Introduction to Radiation Safety

    This five-day lecture/laboratory course is an introduction to the basic science behind radiation safety and to common applications of radiation safety principles. Lectures include a description of common radiation sources, interactions of radiation with matter, biological effects, detection and measurement. Laboratory exercises emphasize radiation detection and measurement techniques using both fixed and portable instrumentation.

    View course page

  • Medical Radiation Safety Training Officer Course instructor and students

    Medical Radiation Safety Officer

    This five-day lecture/laboratory course introduces course participants to current issues and technologies in the medical applications of radiation. The issues and technologies are discussed in the context of improving and developing an institution’s radiation safety program.

    View course page

  • MARSAME Course student in class


    This four-day training course focuses on the methodology and practical application of the MARSAME standard. This standard supplements the MARSSIM manual that has become the basis for real property final status surveys. The objective of the course is to provide attendees with a solid understanding of the MARSAME standard, practice through exercise and provide practical information related to its implementation.

    View course page

  • MARSSIM Training Course instructor in class


    This five-day course emphasizes the decision-making processes involved in the design and implementation of a MARSSIM-based decommissioning survey. Topics include an overview of radiological survey types, the data quality objectives process, selection and application of DCGLs, background reference area selection, survey instrument detection sensitivity, area classification, statistical design of surveys, measurement uncertainty and performing statistical tests.

    View course page

  • Human figure showing circulatory system

    Occupational Internal Dosimetry

    This five-day course is designed to provide course participants with a thorough understanding of current methods for determining radiation doses resulting from intakes of radioactive materials by workers. The course covers the basic concepts and principles of internal dose assessments, and describes the ICRP internal dosimetry systems and models currently in use in the United States and internationally.

    View course page

  • Radiation Safety Officer Training Course equipment

    Radiation Safety Officer Training

    This five-day lecture/laboratory course introduces course participants to relevant issues that influence the effectiveness of a radiation safety program. The course emphasizes a variety of administrative and technical issues that a radiation safety officer has to address. An interactive format offers the opportunity for instructor/group discussions to facilitate the learning process.

    View course page

  • Worker conducting site characterization survey

    Site Characterization in Support of Decommissioning

    This five-day course emphasizes site evaluation, data planning, survey implementation and tools, data interpretation, and decision-making processes involved in the historical site assessment, scoping survey and characterization survey phases of decommissioning. Topics include: site assessment, surveys for radiological and chemical contaminants, data quality objectives and assessments, safety evaluations, planning and budgeting.

    View course page

View the Environmental Solutions Fact Sheet


ORAU offers exceptional quality service delivered by a leading provider of radiological characterization and independent verification surveys staffed with highly-skilled health physicists and radiation safety experts; defensible results backed by more than 35 years of experience in independent environmental assessments and verification work for federal and state agencies; and cost-effective solutions for instilling confidence in the decontamination and decommission of contaminated sites.

Download the ORAU Environmental Solutions fact sheet (.pdf). 

Contact us

For more information about contracting with ORAU, contact Kathy Rollow at 865.574.4390 or