Deposition Measurements From the Full-Scale Radiological Dispersal Device Field Trials

Erhardt, Lorne; Lebel, Luke S.; Korpach, Ed; Berg, Rodney; Inrig, Elizabeth; Watson, Ian; Liu, Chuanlei; Gilhuly, Colleen; Quayle, Debora

doi:10.1097/hp.0000000000000444

Cited by 20 publications

(9 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Doses decreased much more quickly in the crosswind directions. Erhardt et al (2016) reported that, of the approximately 35 GBq 140 La sources that were dispersed into the air during the three tests, between 15% and 30% of the material was deposited in the field within 450 m of ground zero. The ground shine dose rate profiles from the RadEye detector array measurements from this deposited material is shown for each shot in Fig.…”

Section: Equipment and Methodsmentioning

confidence: 97%

Real Time in Situ Gamma Radiation Measurements of the Plume Evolution from the Full-Scale Radiological Dispersal Device Field Trials

et al. 2016

Self Cite

View full text Add to dashboard Cite

During the Full-Scale Radiological Dispersal Device Field Trials carried out in Suffield in 2012, several suites of detection and sampling equipment were used to measure and characterize the explosive dispersal of the short half-life radioactive tracer Lanthanum-140 ((140)La). The equipment deployed included networks of in situ real-time radiation monitoring detectors providing measurements of different sensitivities and characteristics. A dense array of lower sensitivity detectors was established near field, ranging from 10 to 450 m from the detonation location. A sparser array of more sensitive detectors was established in the far field (150 m to 3.5 km from the detonation location). Each was used to collect and report the dose rate data from the radioactive plume passage with a sample time resolution of 1 s. The two systems went through independent calibrations and were compared and shown to be consistent with each other. The in situ gamma radiation measurements have allowed the movement and evolution of the plume to be described and to identify deposition rates and non-uniformities in the temporal shape of the plume. This knowledge could be applied for emergency planning guidance for the case of release of radioactive material by a radiological dispersive device.

show abstract

Section: Equipment and Methodsmentioning

confidence: 97%

Real Time in Situ Gamma Radiation Measurements of the Plume Evolution from the Full-Scale Radiological Dispersal Device Field Trials

et al. 2016

Self Cite

View full text Add to dashboard Cite

show abstract

“…Measurements of the subsequent dispersion and deposition were made using multiple experimental techniques, details of which can be found in the overview papers in this special issue of Health Physics (Green et al 2016;Erhardt et al 2016). The data used in this model comparison study are briefly described here.…”

Section: Experimental Test Seriesmentioning

confidence: 99%

National Atmospheric Release Advisory Center Dispersion Modeling of the Full-scale Radiological Dispersal Device (FSRDD) Field Trials

Neuscamman

2016

Health Physics

View full text Add to dashboard Cite

The results of the National Atmospheric Release Advisory Center (NARAC) model simulations are compared to measured data from the Full-Scale Radiological Dispersal Device (FSRDD) field trials. The series of explosive radiological dispersal device (RDD) experiments was conducted in 2012 by Defence Research and Development Canada (DRDC) and collaborating organizations. During the trials, a wealth of data was collected, including a variety of deposition and air concentration measurements. The experiments were conducted with one of the stated goals being to provide measurements to atmospheric dispersion modelers. These measurements can be used to facilitate important model validation studies. For this study, meteorological observations recorded during the tests are input to the diagnostic meteorological model, ADAPT, which provides 3-D, time-varying mean wind and turbulence fields to the LODI dispersion model. LODI concentration and deposition results are compared to the measured data, and the sensitivity of the model results to changes in input conditions (such as the particle activity size distribution of the source) and model physics (such as the rise of the buoyant cloud of explosive products) is explored. The NARAC simulations predicted the experimentally measured deposition results reasonably well considering the complexity of the release. Changes to the activity size distribution of the modeled particles can improve the agreement of the model results to measurement.

show abstract

“…Measurements of the deposition are presented in three papers. Erhardt et al (2016) present deposition measurements taken using handheld and fixed-point, in situ, beta and gamma detectors, Sinclair et al (2016) present aerial survey measurements of the deposition, and Berg et al (2016) present laboratory analysis of measurements using passive deposition filters. Comparison of dispersion model results to the FSRDD Field Trial measurements and analysis of model performance are presented in four papers.…”

Section: Full-scale Radiological Dispersal Device Field Trialsmentioning

confidence: 99%

Deposition Measurements From the Full-Scale Radiological Dispersal Device Field Trials

Cited by 20 publications

References 9 publications

Real Time in Situ Gamma Radiation Measurements of the Plume Evolution from the Full-Scale Radiological Dispersal Device Field Trials

Real Time in Situ Gamma Radiation Measurements of the Plume Evolution from the Full-Scale Radiological Dispersal Device Field Trials

National Atmospheric Release Advisory Center Dispersion Modeling of the Full-scale Radiological Dispersal Device (FSRDD) Field Trials

Introduction to the Special Issue on Experiments Involving the Outdoor Energetic Release of Radioactive Materials

Contact Info

Product

Resources

About