Related Topics: Homeland Security Research

Homeland Security Research Products in the Science Inventory

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Records with

  • Organization = [ORD-NHSRC]
  • Keyword = radiological AND decontamination.
Records 1 to 25 of 161

2021
Decontamination of urban surfaces contaminated with radioactive materials and consequent onsite recycling of the waste water
(JOURNAL) [Published : Feb 04, 2021]
Enhancing rapid remediation strategies is paramount for recovery after a large-scale nuclear contamination event in an urban environment. Some current strategies recommend use of readily available equipment, materials, and facilities to expedite recovery. For example, applying pr...
Predicting wildfire particulate matter and hypothetical re-emission of radiological Cs-137 contamination incidents
(JOURNAL) [Published : Nov 15, 2021]
Radiological release incidents can potentially contaminate wide areas with radiological materials and decontamination efforts are typically focused on populated areas leaving radionuclides in forested areas for long periods of time. Large wildfires in contaminated forested areas ...
2019
2018 EPA International Decontamination Research and Development Conference
(SUMMARY) [Published : May 28, 2019]
On May 8-10, 2018, the U.S. Environmental Protection Agency’s (EPA’s) Office of Research and Development’s National Homeland Security Research Center (ORD/NHSRC) hosted the 10th U.S. EPA International Decontamination Research and Development Conference at the EPA facilities in Re...
A case study of cesium sorption onto concrete materials and evaluation of wash agents: Implications for wide area recovery
(JOURNAL) [Published : Jun 01, 2019]
The sorption and desorption properties of radionuclides onto common building materials such as concrete are critical factors in the improvement of techniques for mitigating a release of nuclear or radiological material to the urban environment. A potential option for the early p...
Evaluating Solid Sorbents for Recycling Wash Waters Containing Strontium and Calcium
(JOURNAL) [Published : Jan 01, 2019]
A radiological release from a radiological dispersal device (RDD) or an improvised nuclear device (IND) has the potential to contaminate a vast area both near the dispersal epicenter and via atmospheric deposition of small particles containing the more volatile contaminants. Rapi...
Evaluation of Low-Tech Outdoor Decontamination Methods Following Wide Area Radiological/Nuclear Incidents
(PUBLISHED REPORT) [Published : Sep 02, 2019]
This technology evaluation report included use of low-tech decontamination methods on surfaces common to outdoor residential environments and included evaluating the decontamination efficacy, method constraints, safety concerns, feasibility, waste generation, potential exposure, ...
High Pressure Decontamination of Building Materials During Radiological Incident Recovery
(JOURNAL) [Published : Nov 01, 2019]
High pressure decontamination of certain surface building materials is concluded to be a promising rapid, readily available response technique, with the data from this study informing its practical implementation. Removal efficacy of radionuclides from concrete are high when perf...
Radiological Emergency: Exposure Assessment of Livestock Carcass Management
(PUBLISHED REPORT) [Published : Jun 06, 2019]
The potential exposures and exposure pathways were compared for various options to support decision-making in the event of a radiological emergency to provide an in-depth evaluation based on understanding of ionizing radiation and radiation exposure, conceptual models of potentia...
The Use of Hollow Fiber Dialysis Filters Operated in Axial Flow Mode for Recovery of Microorganisms in Large Volume Water Samples with High Loadings of Particulate Matter
(JOURNAL) [Published : Apr 05, 2019]
The objective of this study was to evaluate axial flow hollow fiber ultrafiltration (HFUF) in the recovery of target organisms in large volumes of turbid water that would be similar to water encountered in the cleanup of a biologically contaminated area such as the B. anthracis c...
Tools to Expedite an Urban Radiological Recovery Effort
(PRESENTATION) [Presented : Sep 24, 2019]
Presentation; The study was devised to connect emergency management and homeland security offices at the city, state, and federal agencies and discuss the availability and potential response capabilities of equipment reserves.
2018
Cesium Emissions from Laboratory Fires
(JOURNAL) [Published : Jun 28, 2018]
This journal article studied the partitioning of Cs between airborne particulate and residual ash from burning Cs-contaminated vegetation as a function of particle size distribution (PSD), and to correlate Cs emissions with carbon-containing compounds and combustion efficiency.
Design of Ad Hoc Filtration Beds for Treating Contaminated Waste Waters Final
(PAPER IN NON-EPA PROCEEDINGS) [Published : Mar 27, 2018]
Sensitivity analyses on the system parameters revealed simple relationships between the bed design and the expected breakthrough of cesium, allowing us to generate a concise set of look-up tables to aid the early responders.
Effects of Aging and Decontamination Pressure on the Penetration of Radionuclides into Concrete
(PAPER IN NON-EPA PROCEEDINGS) [Published : Mar 22, 2018]
This study aims to understand the effect of the rapid decontamination methods of high pressure washing and washing with salt additives on the penetration of radionuclides into concrete. To this end, we first identified how penetration profiles of Cs-137, Sr-85, and Eu-152 evolve ...
Hot Spot Calculator to Optimize Radiological Cleanup Decisions
(PUBLISHED REPORT) [Published : May 15, 2018]
Model/Guide
Municipal and commercial equipment for radiological response and recovery in an urban environment: state of science, research needs, and evaluation of implementation towards critical infrastructure resilience
(PUBLISHED REPORT) [Published : May 01, 2018]
During the immediate, emergency phase of a response, it will be impossible to initiate activities other than establishing life-saving operations and securing a site for the safety of the public and first responders. This report contains a comprehensive list of proposed equipment ...
Persistence and Decontamination of Radioactive Cesium in a Model Drinking Water System
(PUBLISHED REPORT) [Published : Jul 17, 2018]
The objective of this report was to evaluate the persistence of radioactive cesium-137 (Cs-137), on concrete-lined, copper, and polyvinyl chloride (PVC) pipe, and possible decontamination approaches. During this study, conditions within operational drinking water pipes were simul...
Plastic Scintillation Fibers for Radiological Contamination Surveys
(PUBLISHED REPORT) [Published : Mar 28, 2018]
Report
Selected Analytical Methods for Environmental Remediation and Recovery (SAM) 2017
(PUBLISHED REPORT) [Published : Jan 02, 2018]
Report (Methods)
Summary of the Transport of Cesium in the Environment
(SUMMARY) [Published : Oct 02, 2018]
Cesium (Cs) is a likely contaminant that would either be used (probably in the form of Cesium Chloride [CsCl]) in a radiological dispersal device (RDD), or either released or generated through decay processes from nuclear power plant (NPP) accidents or an improvised nuclear devic...
Survey and Assessment of Fate and Transport Models for Use Following a Wide-Area Urban Release to Inform Mapping, Characterization, and Site Clearance
(PUBLISHED REPORT) [Published : Oct 09, 2018]
If a terrorist event or natural disaster causes a wide area of land to be contaminated with chemical, biological, or radiological particulates, emergency responders need a rapid way to determine where to sample and decontaminate prior to clearing the area. A comprehensive stormwa...
Waste Estimation Support Tool 5.0
(DATA/SOFTWARE) [Published : Oct 24, 2018]
EPA’s Waste Estimation Support Tool (WEST) is a GIS-based decision support tool for estimating the characteristics, amount, and residual radioactivity of waste generated from remediation and cleanup activities after a radiological incident, including those involving radiological ...
2017
EPA's Incident Waste Management Planning and Response Tool (I-WASTE)
(SUMMARY) [Published : Jul 11, 2017]
Technical brief