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Part 2: Stabilization/Containment of Radiological Particle Contamination to Enhance First Responder, Early Phase
Matthew Magnuson1, Terry Stilman2, Shannon Serre3
1EPA Office of Research and Development, Homeland Security Materials and Management Division, 26 W Martin Luther King Dr., Cincinnati, OH 45268, USA.
Stabilization technologies effectively reduce radiological contamination spread from surfaces during emergency response. These agents minimize worker exposure by preventing radioactive particle resuspension and tracking from foot and vehicle traffic.
Area of Science:
- Environmental Science
- Radiation Protection
- Materials Science
Background:
- Radiological contamination poses risks to workers and the environment.
- Effective containment strategies are crucial for mitigating radiation exposure during emergency response.
Purpose of the Study:
- To evaluate the efficacy of three stabilization technologies in reducing radiological contamination spread.
- To assess the impact of surface type and traffic on contamination control.
- To determine the potential for these technologies in minimizing worker exposure.
Main Methods:
- Three stabilization agents (calcium chloride, Phos-Chek MVP-Fx, Soil2O™) were tested on concrete, asphalt, and sandy soil.
- Simulated fallout material (SFM) tagged with radiostrontium (Sr-85) was used as the contaminant.
- Radiological activity was measured before and after simulated foot and vehicle traffic experiments using gamma spectrometry.
Main Results:
- Stabilization technologies generally improved containment, reducing particle removal and transfer.
- Surface type significantly influenced results: sand showed higher particle removal without stabilization.
- All tested agents reduced airborne radioactive particles, with Soil2O™ showing a 3-fold decrease and CaCl2/Phos-Chek showing no detectable radioactivity.
Conclusions:
- Stabilization technologies offer a viable method for managing radiological contamination during response activities.
- The choice of technology and consideration of surface type are important for optimal performance.
- These agents can significantly decrease the risk of inhaling radioactive particles for response workers.
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