Dose Rate Evaluation for the ES3100 Package with HEU Content Using MCNP, ADVANTG, Monaco, and MAVRIC
Abstract
Here, this paper presents a comparative study of dose rate calculations for the ES3100 package with highly enriched uranium (HEU) content for different source configurations using computer codes: (1) MCNP; (2) Automated Variance Reduction Generator (ADVANTG)/MCNP; (3) Monaco; and (4) Monaco with Automated Variance Reduction using Importance Calculations (MAVRIC). The Model ES3100 package was developed at the Y12 National Security Complex for domestic and international transportation of Type B fissile radioactive material. In this study, six different source configurations (i.e., solid cylinder, cylindrical hemishell, cylindrical shell, rectangular plate, cylindrical rod, or cylindrical segment form) having 36 kg of HEU metal inside the package containment vessel (based on configurations in the ES3100/HEU safety analysis report for packaging) are evaluated. Dose rates at the package surfaces and 1 m from the package surfaces are calculated for these different source configurations. MCNP and Monaco cases are run without any biasing options to accelerate the convergence. Consistent Adjoint Driven Importance Sampling (CADIS) and ForwardWeighted CADIS (FWCADIS) methods developed at the Oak Ridge National Laboratory are implemented in ADVANTG/MCNP and MAVRIC codes to accelerate the convergence. ADVANTG generates variance reduction parameters using Denovo code, and MCNP is used with the variance reduction parameters to acceleratemore »
 Authors:

 Y12 National Security Complex, Oak Ridge, TN (United States)
 Publication Date:
 Research Org.:
 Oak Ridge Y12 Plant (Y12), Oak Ridge, TN (United States)
 Sponsoring Org.:
 USDOE
 OSTI Identifier:
 1499102
 Report Number(s):
 IROS6333
Journal ID: ISSN 00295450
 Grant/Contract Number:
 NA0001942
 Resource Type:
 Journal Article: Accepted Manuscript
 Journal Name:
 Nuclear Technology
 Additional Journal Information:
 Journal Volume: 205; Journal Issue: 6; Journal ID: ISSN 00295450
 Publisher:
 Taylor & Francis  formerly American Nuclear Society (ANS)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 42 ENGINEERING; 61 RADIATION PROTECTION AND DOSIMETRY; Monte Carlo calculation; shielding evaluation; ES3100 package
Citation Formats
Paul, Pran K. Dose Rate Evaluation for the ES3100 Package with HEU Content Using MCNP, ADVANTG, Monaco, and MAVRIC. United States: N. p., 2018.
Web. doi:10.1080/00295450.2018.1533319.
Paul, Pran K. Dose Rate Evaluation for the ES3100 Package with HEU Content Using MCNP, ADVANTG, Monaco, and MAVRIC. United States. doi:10.1080/00295450.2018.1533319.
Paul, Pran K. Fri .
"Dose Rate Evaluation for the ES3100 Package with HEU Content Using MCNP, ADVANTG, Monaco, and MAVRIC". United States. doi:10.1080/00295450.2018.1533319. https://www.osti.gov/servlets/purl/1499102.
@article{osti_1499102,
title = {Dose Rate Evaluation for the ES3100 Package with HEU Content Using MCNP, ADVANTG, Monaco, and MAVRIC},
author = {Paul, Pran K.},
abstractNote = {Here, this paper presents a comparative study of dose rate calculations for the ES3100 package with highly enriched uranium (HEU) content for different source configurations using computer codes: (1) MCNP; (2) Automated Variance Reduction Generator (ADVANTG)/MCNP; (3) Monaco; and (4) Monaco with Automated Variance Reduction using Importance Calculations (MAVRIC). The Model ES3100 package was developed at the Y12 National Security Complex for domestic and international transportation of Type B fissile radioactive material. In this study, six different source configurations (i.e., solid cylinder, cylindrical hemishell, cylindrical shell, rectangular plate, cylindrical rod, or cylindrical segment form) having 36 kg of HEU metal inside the package containment vessel (based on configurations in the ES3100/HEU safety analysis report for packaging) are evaluated. Dose rates at the package surfaces and 1 m from the package surfaces are calculated for these different source configurations. MCNP and Monaco cases are run without any biasing options to accelerate the convergence. Consistent Adjoint Driven Importance Sampling (CADIS) and ForwardWeighted CADIS (FWCADIS) methods developed at the Oak Ridge National Laboratory are implemented in ADVANTG/MCNP and MAVRIC codes to accelerate the convergence. ADVANTG generates variance reduction parameters using Denovo code, and MCNP is used with the variance reduction parameters to accelerate the convergence. MAVRIC uses Denovo code to construct an importance map and a biased source distribution that are supplied to Monaco to accelerate the Monte Carlo simulation. The FWCADIS option in ADVANTG and MAVRIC is used to accelerate the convergence in this study. The accelerated convergence cases (ADVANTG/MCNP and MAVRIC) are about 100 times faster with 100 times less particle simulation than those cases run without biasing options (analog MCNP and analog Monaco). Lastly, the MCNP, ADVANTG/MCNP, Monaco, and MAVRIC calculated dose rates at the package surfaces and at 1 m from the package surfaces for the different source configurations are compared and are found to be in general agreement.},
doi = {10.1080/00295450.2018.1533319},
journal = {Nuclear Technology},
issn = {00295450},
number = 6,
volume = 205,
place = {United States},
year = {2018},
month = {11}
}
Web of Science
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