Dade Moeller & Associates specializes in conducting decommissioning surveys of research laboratories and medical facilities. Our staff will design and conduct Multi-Agency Radiation Survey and Site Investigation Manual (MARSSIM) type final status surveys for facilities undergoing closure. We prepare site-specific decommissioning cost estimates for this type of survey. MARSSIM type surveys of building infrastructure may include, but are not limited to, sinks and drains, fume hoods, floors, fixed equipment and bench tops, and other building surfaces to document that any residual radioactive contamination levels do not exceed acceptable limits. If desired, we will survey materials and equipment following guidance contained in the Multi-Agency Radiological Survey and Assesment of Materials and Equipment (MARSAME) manual.
Survey Plan
Following MARSSIM guidance, we conduct a Historical Site Assessment (HSA) to identify potential radiological contaminants. Based on the results of the HSA and in accordance with MARSSIM guidance, we develop a Survey Plan describing the scanning, sampling, and analytical approach of the survey, creating data quality objectives, setting derived concentration guideline levels, identifying survey units and classifications for impacted areas, and determining the number of sample and/or measurement locations required in each survey unit for nonparametric statistical hypothesis testing.
Final Site Survey and Report
Dade Moeller & Associates then conducts the final site survey, and analyzes the results in accordance with the Survey Plan. If needed, the building surfaces and equipment will be decontaminated. We can also coordinate disposal of contaminated materials. Lastly, we prepare a Final Status Survey report as described in MARSSIM to serve as a stand-alone, technically-defensible record of the radiological status of the site to satisfy U.S. Nuclear Regulatory Commission, Agreement State, or Department of Energy decommissioning requirements. Our staff can meet with regulators to discuss the decommissioning activities as needed.
The Resources You Need
Dade Moeller & Associates will provide professional certified health physicists, staff health physicists, support staff, and analytical expertise to enable successful completion of the project. Our equipment includes a Ludlum model 239-1F floor monitor with scaler ratemeter model 2224; three Ludlum model 43-68 GP detectors with scaler ratemeter model 2224; pressurized ion chambers; and other instruments to conduct contamination and dose rate measurements throughout.