Download or read book Development of a Multimedia Radionuclide Exposure Model for Low level Waste Management written by Yasuo Onishi and published by . This book was released on 1982 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of a Multimedia Radionuclide Exposure Model for Low level Waste Management written by and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A method is being developed for assessing exposures of the air, water, and plants to low-level waste (LLW) as a part of an overall development effort of a LLW site evaluation methodology. The assessment methodology will predict LLW exposure levels in the environment by simulating dominant mechanisms of LLW migration and fate. The methodology consists of a series of physics-based models with proven histories of success; the models interact with each other to simulate LLW transport in the ecosystem. A scaled-down version of the methodology was developed first by combining the terrestrial ecological model, BIOTRAN; the overland transport model, ARM; the instream hydrodynamic model, DKWAV; and the instream sediment-contaminant transport model, TODAM (a one-dimensional version of SERATRA). The methodology was used to simulate the migration of 239Pu from a shallow-land disposal site (known as Area C) located near the head of South Mortandad Canyon on the LANL site in New Mexico. The scenario assumed that 239Pu would be deposited on the land surface through the natural processes of plant growth, LLW uptake, dryfall, and litter decomposition. Runoff events would then transport 239Pu to and in the canyon. The model provided sets of simulated LLW levels in soil, water and terrestrial plants in the region surrounding the site under a specified land-use and a waste management option. Over a 100-yr simulation period, only an extremely small quantity (6 x 10−9 times the original concentration) of buried 239Pu was taken up by plants and deposited on the land surface. Only a small fraction (approximately 1%) of that contamination was further removed by soil erosion from the site and carried to the canyon, where it remained. Hence, the study reveals that the environment around Area C has integrity high enough to curtail LLW migration under recreational land use.
Download or read book Intermedia Pollutant Transport written by David T. Allen and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: The National Center for Intermedia Transport Research (NCITR) was established at UCLA in 1982 by EPA as one of six Centers of Excellence for the study of environmental pollution problems. One of the functions undertaken by the NCITR has been to hold periodic workshops and to provide a forum for the discussion of current topiCS in the environmental pollution arena. To this end, two other workshops have previously been held. The first, held in November 1982, was chaired by H. R. Pruppacher, R. G. Semonin and W. G. N. Slinn on Precipitation Scavenging, Dry DepOSition and Resuspension. The second, held in January 1986, was chaired by Y. Cohen on Pollution Transport and Accumulation in a Multimedia Environment. The present workshop, chaired by D. T. Allen, Y. Cohen and I. R. Kaplan, was held on August 24-26, 1988 in Santa Monica, California. The title of the workshop was Intermedia Pollutant Transport: Modeling and Field Measurements. Approximately one hundred individuals participated and twenty five papers were given, mostly by invitation. The workshop was divided into the following four broad topiCS: 1) Transport of Pollutants from the Atmosphere, 2) Transport of Pollutants from Soils and Groundwaters, 3) Transport of Pollutants from Lakes and Oceans, and 4) Multimedia Transport of Pollutants. The last afternoon was reserved for a Panel Discussion.
Download or read book Pollutants in a Multimedia Environment written by Yoram Cohen and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pollutants released to the environment are distributed among the many environmental media such as air, water, soil, and vegetation, as the result of complex physical, chemical and biological processes. The possible environmental impact associated with chemical pollutants is related to their concentration levels and persistence in the various environmental compartments. Therefore, information regarding the migration of pollutants across environmental phase boundaries (eg., air-water, soil-water) and their accumulation in the environment is essential if we are to assess the potential environmental impact and the associated risks. In recent years it has become apparent that environmental pollution is a multimedia problem. Risk assessment and the design of appropriate pollution control measures require that we carefully consider the transport and accumulation of pollutants in the environment. We are now recognizing that the environment must be considered as a whole, and the scientific and regulatory approaches must consider the interactions of environmental media. It is also becoming apparent that single-medium approaches are partial and often counter-productive. On the other hand any multimedia program must carefully consider the rate of each environmental medium in the overall multimedia scheme.
Download or read book NUREG CR written by U.S. Nuclear Regulatory Commission and published by . This book was released on 1981 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1994-03 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Managing Hazardous Air Pollutants written by Winston Chow and published by CRC Press. This book was released on 2020-01-29 with total page 603 pages. Available in PDF, EPUB and Kindle. Book excerpt: Managing Hazardous Air Pollutants presents a detailed examination of the state-of-the-art in the management of air pollutants ("air toxics"). This important new volume focuses on the latest research, regulatory perspectives, modeling, environmental and human risk assessments, new control strategies, monitoring programs, risk communication, and risk management. Key chapters in the book are devoted to these timely subjects:
Download or read book Modeling of radionuclide releases from disposal of low activity mixed waste advisory on the Office of Radiation and Indoor Air s draft proposals on modeling of radionuclide releases from disposal of low activity mixed waste written by United States. Environmental Protection Agency. Radiation Advisory Committee and published by DIANE Publishing. This book was released on 1999 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Guidance Manual for Performing Waste Load Allocations written by and published by . This book was released on 1984 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hazard Assessment of Chemicals written by Jitendra Saxena and published by Elsevier. This book was released on 2013-09-03 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hazard Assessment of Chemicals: Current Developments, Volume 4 serves as a forum for the exposition, evaluation, and analysis of methods, techniques, applications, and approaches in the field of chemical hazard assessment. The text consists of articles tackling subjects in certain areas of chemical hazard assessment. Topics discussed include hazardous substances data bases; field instruments for identifying hazardous materials; water quality criteria for the protection of aquatic life; and the role of environmental chemicals in reproductive failure and teratogenicity. Environmentalists, ecologists, toxicologists, public safety officers and workers, and those concerned with the health effects of chemical agents in the environment will find this book very interesting.
Download or read book Chernobyl What Have We Learned written by Yasuo Onishi and published by Springer Science & Business Media. This book was released on 2007-06-03 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a 20-year historical overview and comprehensive study results of the aquatic environment affected by the 1986 Chernobyl nuclear accident. The book analyzes water remediation actions, using current science and mathematical modeling, and discusses why some were successful, but many others failed. This book will interest engineers, scientists, decision-makers, and everyone involved in radiation protection and radioecology, environmental protection and risk assessment, water remediation and mitigation, and radioactive waste disposal.
Download or read book INIS Atomindex written by and published by . This book was released on 1995 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of a Low level Radioactive Waste Shipper Model written by and published by . This book was released on 1983 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical guidance manual for performing waste load allocations book IIstreams and riverschapter 3 toxic substances written by and published by DIANE Publishing. This book was released on with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Critical Review written by Yasuo Onishi and published by . This book was released on 1981 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Exposure Assessment of Radionuclide Emissions Associated with Potential Mixed low Level Waste Disposal Facilities at Fifteen DOE Sites written by and published by . This book was released on 1996 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: A screening method was developed to compare the doses received via the atmospheric pathway at 15 potential DOE MLLW (mixed low-level waste) sites. Permissible waste concentrations were back calculated using the radioactivity NESHAP (National Emissions Standards for Hazardous Air Pollutants) in 40 FR 61 (DOE Order 5820.2A performance objective). Site-specific soil and meteorological data were used to determine permissible waste concentrations (PORK). For a particular radionuclide, perks for each site do not vary by more than one order of magnitude. perks of 14C are about six orders of magnitude more restrictive than perks of 3H because of differences in liquid/vapor partitioning, decay, and exposure dose. When comparing results from the atmospheric pathway to the water and intruder pathways, 14C disposal concentrations were limited by the atmospheric pathway for most arid sites; for 3H, the atmospheric pathway was not limiting at any of the sites. Results of this performance evaluation process are to be used for planning for siting of disposal facilities.
Download or read book Mendeleev Chemistry Journal written by and published by . This book was released on 1990 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt:
