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Jannik Gerald - One of the best experts on this subject based on the ideXlab platform.

  • risk based radionuclide derived concentration guideline levels for an Industrial Worker exposed to concrete slab end states at the savannah river site
    ANS Topical Meeting On Decommissioning Decontamination And Reutilization Denver CO (US) 08 07 2005--08 11 2005, 2005
    Co-Authors: Jannik Gerald
    Abstract:

    Dose and risk assessments are an integral part of decommissioning activities. Most human health risk assessments are performed for a reasonable maximum exposure to an individual with assumed intake and exposure parameters that depend on the end state of the decommissioning activities and the likely future use of the site. Regardless of how the potentially exposed individual is defined, the subsequent calculated human health risk is not a measurable quantity. To demonstrate compliance with risk-based acceptance or cleanliness criteria, facility-specific risk assessments usually are performed after final-verification sampling and analysis. Alternatively, conservative, a priori, guideline concentrations for residual contaminants can be calculated and rapidly compared to the subsequently measured contaminant concentrations to demonstrate compliance. In response to the request for accelerated cleanup at U.S. Department of Energy facilities, the Savannah River Site (SRS) is decommissioning its excess facilities through removal of the facility structures leaving only the concrete-slab foundations in place. Site-specific, risk-based derived concentration guideline levels (DCGLs) for radionuclides have been determined for a future Industrial Worker potentially exposed to residual contamination on these concrete slabs. When appropriate, these conservative DCGLs will be used at SRS in lieu of facility-specific risk assessments to further accelerate the decommissioning process. This paper discusses and describes the methods and scenario-specific parameters used to estimate the risk-based DCGLs for the SRS decommissioning end state.

Jesse L Roach - One of the best experts on this subject based on the ideXlab platform.

  • area factor determinations for an Industrial Worker exposed to a concrete slab end state
    ANS Topical Meeting, 2007
    Co-Authors: Timothy G Jannik, Patricia L Lee, Eduardo B Farfan, Jesse L Roach
    Abstract:

    The U.S. Department of Energy's (DOE) Savannah River Site (SRS) is decommissioning many of its excess facilities through removal of the facility structures leaving only the concrete-slab foundations in place. Site-specific, risk-based derived concentration guideline levels (DCGLs) for radionuclides have been determined for a future Industrial Worker potentially exposed to residual contamination on these concrete slabs as described in Jannik [1]. These risk-based DCGLs were estimated for an exposure area of 100 m{sup 2}. During deactivation and decommissioning (D&D) operations at SRS, the need for area factors for larger and smaller contaminated areas arose. This paper compares the area factors determined for an Industrial Worker exposed to a concrete slab end-state for several radionuclides of concern at SRS with (1) the illustrative area factors provided in MARSSIM [2], (2) the area correction factors provided in the U.S. Environmental Protection Agency's (EPA) Soil Screening Guidance [3], and (3) the hot spot criterion for field application provided in the RESRAD User's Manual [4].

Seokyoung Ahn - One of the best experts on this subject based on the ideXlab platform.

  • derivation of preliminary derived concentration guideline levels for surface soil at kori unit 1 by resrad probabilistic analysis
    Nuclear Engineering and Technology, 2018
    Co-Authors: Jihyang Byon, Sang June Park, Seokyoung Ahn
    Abstract:

    Abstract Preliminary surface soil Derived Concentration Guideline Levels (DCGLs) were derived conforming to the Multi-Agency Radiation Site Survey and Investigation Manual (MARSSIM) procedure for the site release and reuse of Kori Unit 1 in Korea. Based on the decommissioning experiences of the U.S. nuclear power plants, a suite of residual radionuclides was determined, and uncertainties contributed to the resultant dose by the input parameters were quantified via the sensitivity analysis of parameters. The peak of the mean dose was obtained via the probabilistic analysis of the RESRAD (RESidual RADioactivity)-ONSITE code. Consequently, DCGLw of Kori Unit 1 in accordance with two scenarios, Industrial Worker and residential farmer scenario, were derived and the results were compared respectively with other NPPs. It could be used as a basic guideline for establishing regulatory standards for reuse planning, designing the site characterization surveys and implementing final status survey (FSS).

Timothy G Jannik - One of the best experts on this subject based on the ideXlab platform.

  • area factor determinations for an Industrial Worker exposed to a concrete slab end state
    ANS Topical Meeting, 2007
    Co-Authors: Timothy G Jannik, Patricia L Lee, Eduardo B Farfan, Jesse L Roach
    Abstract:

    The U.S. Department of Energy's (DOE) Savannah River Site (SRS) is decommissioning many of its excess facilities through removal of the facility structures leaving only the concrete-slab foundations in place. Site-specific, risk-based derived concentration guideline levels (DCGLs) for radionuclides have been determined for a future Industrial Worker potentially exposed to residual contamination on these concrete slabs as described in Jannik [1]. These risk-based DCGLs were estimated for an exposure area of 100 m{sup 2}. During deactivation and decommissioning (D&D) operations at SRS, the need for area factors for larger and smaller contaminated areas arose. This paper compares the area factors determined for an Industrial Worker exposed to a concrete slab end-state for several radionuclides of concern at SRS with (1) the illustrative area factors provided in MARSSIM [2], (2) the area correction factors provided in the U.S. Environmental Protection Agency's (EPA) Soil Screening Guidance [3], and (3) the hot spot criterion for field application provided in the RESRAD User's Manual [4].

Ramasamy Alagirusamy - One of the best experts on this subject based on the ideXlab platform.

  • heat and mass transfer through thermal protective clothing a review
    International Journal of Thermal Sciences, 2016
    Co-Authors: Prabal Talukdar, Apurba Das, Ramasamy Alagirusamy
    Abstract:

    Abstract Thermo-physiological comfort and safety of the people who are working as firefighter, Industrial Worker, military personnel and race car driver are major concerns. This led to the significant amount of research in the field of thermal protective clothing over the past several years. In this manuscript, a brief review of the research and development in the field of thermal protective clothing is presented and it primarily focusses the studies dealing with the heat and mass transfer aspects in thermal protective clothing. Experimental methods and standards used to analyze the performance of thermal protective clothing are discussed. Advancement in modeling of heat and mass transfer through porous fabrics are highlighted. Heat transfer modeling in air gaps between fabric and human skin as well as bio-heat transfer models used in the performance analysis of thermal protective clothing are also explained. Effect of various parameters like physical and thermo-physical properties of fabrics, air gap, moisture, exposure conditions on protective performance of fabrics are discussed. Recent trends in research in the field of thermal protective clothing are summarized along with suggestions for future research.