RESRAD parameter sensitivity analysis

Cheng, Jinxiang; Yu, C.; Zielen, A.J.

doi:10.2172/6400651

Cited by 9 publications

(8 citation statements)

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“…A sensitivity analysis of RESRAD parameters was conducted at ANL in 1991; the results for a generic run are presented in RESRAD Parameter Sensitivity Analysis I I (Cheng et al 1991). In general, parameters associated with the cover material or the contaminated zone influence results more than parameters associated with the unsaturated or saturated zone before the breakthrough time of the groundwater contamination.…”

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confidence: 99%

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Data collection handbook to support modeling the impacts of radioactive material in soil

Yu¹,

Cheng²,

Jones³

et al. 1993

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confidence: 99%

“…This capability gives users an easy way of studying RESRAD parameter sensitivity. Users are referred to the revised RESRAD Manual for Implementing Residual Radioactive Material Guidelines (Yu et al 1993) and RESRAD Parameter Sensitivity Analysis (Cheng et al 1991) for a description of and guidance on using this enhanced feature of the RESRAD code.…”

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confidence: 99%

Data collection handbook to support modeling the impacts of radioactive material in soil

Yu¹,

Cheng²,

Jones³

et al. 1993

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“…The built-in sensitivity and uncertainty analysis capability of RESRAD can be used to study the sensitivity of input parameters and the uncertainty of results. The sensitivity information on input parameters can be used to set priorities for the collection of data for a particular site (Cheng et al 1991, Kamboj et al 2002. The models and input parameters described in this manual and incorporated into RESRAD have been chosen so as to be realistic but reasonably conservative, and the calculated doses corresponding to guideline values of the radionuclide concentrations are expected to be reasonably conservative estimates (overestimates) of the actual doses.…”

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RESRAD connection for facilitating MARSSIM analysis : an illustration of applying the OpenLink concept.

Arnish¹,

Chen²,

Johnson³

et al. 2002

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“…Risk assessments related to the vulnerability of contaminant transport often focus on an individual site. Numerous models exist for such analyses, such as the RESRAD model, which is commonly used within the Department of Energy (DOE) (Cheng et al, 1991; Cheng and Yu, 1993; Wang et al, 1993; Yu et al, 1993a, 1993b; Wilcox and Breshears 1997). Such a modeling approach is useful for rapid and conservative assessments of risk from contaminants at a site.…”

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Assessing Contaminant Transport Vulnerability in Complex Topography Using a Distributed Hydrologic Model

Martens

Breshears

2005

Vadose Zone Journal

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Some facilities, such as Los Alamos National Laboratory, have contaminants at widely scattered locations Modeling of vadose zone hydrology is required to address a variety within a landscape of complex topography. This type of of applied problems in general and risk assessments associated with spatial distribution of contamination poses a particularly contaminants in particular. Risk assessments increasingly must focus on multisite, multipathway analyses as opposed to single-site, single challenging problem for risk assessment. While many of pathway analyses. Such assessments can be particularly challenging the contaminated sites within an area of concern may when contaminants are widely dispersed in complex topography. Here have relatively low levels of contamination, the redistriwe highlight how a set of contaminated sites situated within complex bution and concentration of these contaminants through topography can be effectively prioritized relative to vulnerability of environmental processes such as surface and subsurface contaminant transport from surface and subsurface flows. We used flow must be considered (Wilcox et al.a distributed hydrologic model, SPLASH, to assess the lateral flows Wilcox and Breshears, 1997; Newman et al., 1998; Johanof surface and subsurface water following the simulation of a 100-year sen et al., 2003). Because remediation associated with large precipitation event, which could correspond to an intense thunderareas of dispersed contaminants can be costly, assessstorm. Our case study was conducted in the North Ancho watershed ments that can prioritize remediation resources and efof Los Alamos National Laboratory, in northern New Mexico, USA, an area with widely dispersed contaminants and diverse topography. forts on those sites with some combination of the highest Simulated surface flows generally exceeded subsurface flows by more concentrations and vulnerability to transport are greatly than four orders of magnitude, indicating the relative importance of needed. Site contaminant inventories usually can be obpotential redistribution of contaminants by surface flows for this type tained with straightforward, albeit sometimes costly, samof precipitation event. For the 18 potential contaminant release sites pling, whereas assessing the vulnerability of a site to coninvestigated, the maximum surface flow varied by more than an order taminant transport is more challenging. of magnitude across the sites. Half of the sites had surface flows Ͻ25% A major determinant of contaminant transport is the of the maximum surface flow for a site, allowing for prioritization of amount of hydrological flow at a given site. Vulnerability those sites with the greatest vulnerability. Our results highlight how to contaminant transport can be associated with surrisks of contaminant transport can be effectively assessed in complex face and subsurface flows of water laterally through a topography using distributed hydrologic modeling.

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RESRAD parameter sensitivity analysis

Cited by 9 publications

References 1 publication

Data collection handbook to support modeling the impacts of radioactive material in soil

Data collection handbook to support modeling the impacts of radioactive material in soil

RESRAD connection for facilitating MARSSIM analysis : an illustration of applying the OpenLink concept.

Assessing Contaminant Transport Vulnerability in Complex Topography Using a Distributed Hydrologic Model

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