RESRAD-OFFSITE – A new member of the RESRAD family of codes

Yu, C.; Gnanapragasam, E.; Biwer, B. M.; Cheng, Jing-Jy; Kamboj, S.; Klett, Timothy R.; Zielen, A.J.; Williams, W.A.; Domotor, S.; Wallo, A.

doi:10.1051/radiopro/20095121

Cited by 12 publications

(3 citation statements)

References 10 publications

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“…In 2011 an updated dose assessment [7] was undertaken to re-evaluate whether the previous dose estimate was still valid. Unlike previous assessments, this dose assessment was carried out using the RESRAD-OFFSITE (version 2.6) Code [8]. This code has the capability to model the radiation exposure of an individual who spends time directly above the primary contamination (onsite) and in the vicinity of the primary contamination (offsite).…”

Section: Post-remediation Dose Assessmentmentioning

confidence: 99%

Rehabilitation of the former nuclear test site at Maralinga

Long¹,

Cook²,

Charalambous³

et al. 2021

J. Radiol. Prot.

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Large areas of the former British nuclear test site at Maralinga were contaminated by the explosive dispersal of plutonium. The Australian Government, in consultation with stakeholders, determined that the site should be cleaned-up so that it is fit for unrestricted habitation by the Aboriginal traditional owners (Maralinga Tjarutja). Engagement with the stakeholders, particularly the Maralinga Tjarutja, determined that the specific criterion for rehabilitation was 5 mSv y−1 and that some restrictions on permanent occupancy should remain. Remediation of the site began in 1995, took 5 years and cost AU$106 million. The site was returned to its traditional owners in 2009 and is now the site of a flourishing tourism operation.

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Section: Post-remediation Dose Assessmentmentioning

confidence: 99%

Rehabilitation of the former nuclear test site at Maralinga

Long¹,

Cook²,

Charalambous³

et al. 2021

J. Radiol. Prot.

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“…First, several existing (often similar) models were considered. The RESRAD-BUILD 3.0 model, developed at Argonne National Laboratory (Yu et al 2000(Yu et al , 2003 with funding from the United States Department of Energy (US DoE), can evaluate the dose from human activities in (surface-) contaminated buildings (Biwer et al 2002, Kamboj et al 2011. This is also the case for the building-occupancy scenario of the NUREG/CR-5512 methodology (Kennedy and Strenge 1992).…”

Section: The Need For a New Surface-contamination Modelmentioning

confidence: 99%

SUDOQU, a new dose-assessment methodology for radiological surface contamination

Dillen

Dijk²

2018

J. Radiol. Prot.

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A new methodology has been developed for the assessment of the annual effective dose resulting from removable and fixed radiological surface contamination. It is entitled SUDOQU (SUrface DOse QUantification) and it can for instance be used to derive criteria for surface contamination related to the import of non-food consumer goods, containers and conveyances, e.g., limiting values and operational screening levels. SUDOQU imposes mass (activity)-balance equations based on radioactive decay, removal and deposition processes in indoor and outdoor environments. This leads to time-dependent contamination levels that may be of particular importance in exposure scenarios dealing with one or a few contaminated items only (usually public exposure scenarios, therefore referred to as the 'consumer' model). Exposure scenarios with a continuous flow of freshly contaminated goods also fall within the scope of the methodology (typically occupational exposure scenarios, thus referred to as the 'worker model'). In this paper we describe SUDOQU, its applications, and its current limitations. First, we delineate the contamination issue, present the assumptions and explain the concepts. We describe the relevant removal, transfer, and deposition processes, and derive equations for the time evolution of the radiological surface-, air- and skin-contamination levels. These are then input for the subsequent evaluation of the annual effective dose with possible contributions from external gamma radiation, inhalation, secondary ingestion (indirect, from hand to mouth), skin contamination, direct ingestion and skin-contact exposure. The limiting effective surface dose is introduced for issues involving the conservatism of dose calculations. SUDOQU can be used by radiation-protection scientists/experts and policy makers in the field of e.g. emergency preparedness, trade and transport, exemption and clearance, waste management, and nuclear facilities. Several practical examples are worked out demonstrating the potential applications of the methodology.

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“…A more detailed assessment has been attempted through the application of the RESRADOffsite model [5]. The RESRAD-OFFSITE code provides methods for evaluating the radiological consequences to a receptor located onsite or outside the area of primary contamination.…”

Section: More Realistic (Intermediate) Assessmentmentioning

confidence: 99%

NORM risk assessment for the Søve mining complex, Norway

Brown

Liland

O'Brien³

et al. 2011

Radioprotection

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Abstract. The Søve site is a disused mining complex in Telemark County, Norway, exhibiting enhanced levels of naturally occurring radionuclides from the 238 U and 232 Th decay series. The nascent General Assessment Methodology Process ('GAMP'), developed under IAEA's EMRAS II programme, has been applied at the site. The a priori fixed screening criteria were exceeded in the scenario, precipitating the requirement to undertake a more detailed assessment. The USDOE's RESRAD-OFFSITE code was employed to investigate potential changes in activity concentrations in various environmental compartments over time and the contribution of various exposure pathways to effective doses. Owing to problems associated with model parameterisation and results interpretation a simple leaching and groundwater migration compartmental model was also applied. This allowed activity concentrations in three waste compartments to be calculated with time. Furthermore, an existing external dose-rate model that correlates information on activity concentrations with depth in soil to dose rates in air above ground has been used to estimate prospective external dose-rates to humans and evaluate the efficacy of applying various remediation options.

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RESRAD-OFFSITE – A new member of the RESRAD family of codes

Cited by 12 publications

References 10 publications

Rehabilitation of the former nuclear test site at Maralinga

Rehabilitation of the former nuclear test site at Maralinga

SUDOQU, a new dose-assessment methodology for radiological surface contamination

NORM risk assessment for the Søve mining complex, Norway

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