Nuclear Consulting Services

Michael C. Williams, P. E.

2824 Spring Water Drive

St. Louis, Missouri


For Immediate Support & Service

Contact :

Phone:          (314) 846 - 7662


Email:           NuclearServices

Radiological  Assessment

Dose Assessment

Consulting Services

Our consulting experience in the areas of

Radiological Assessment & Dose Assessment

Includes the following areas:




·          Special assessments and analysis, including: modeling extremely high dose rates associated with piping and valves; modeling dose rates due to a highly-activated Sm sources; modeling dose rates associated with Cf neutron sources; and, modeling dose rates associated with extremely large (i.e., 5,000 Ci) beta-gamma sources.


·          Development of models and methodology, and assessment of dose attributable to “hot particles” containing isotopes associated with fission, activation and fuel products.  Modification and use of the VARSKIN program, and development of special survey instrument adapters to enhance dose assessment due to “hot particles”.  Dose assessment including both shallow dose and deep dose equivalent, associated with beta and gamma “hot particle” radiations.


·          Investigation of abnormal (high) dosimetry results, including: time and motion studies; determination and analysis of radiological work environment; assessment of shielding effects; assessment of operational processes; and assessment of worker-source configuration and orientation.


·          Evaluation and reporting of effective dose equivalent for monitored workers, including assessment and determination of internal, external and extremity dose.


·          Evaluation, tracking, trending and reporting of radiological environmental sampling and monitoring data and results, including preparation of semi-annual and annual reports to the Nuclear Regulatory Commission (NRC) and State Regulatory Commissions.


·          Evaluation and assessment of dose due to high intakes of Uranium, both inhaled and ingested.  These assessments include determination of dose based on urine and fecal bioassay analysis.


·          Off-site dose assessment associated with Emergency Planning and Preparedness scenarios, as part of drills and exercises graded by State and Federal government agencies.