radiation remediation Articles

  • Ionising Radiation

    Introduction The energy level of some types of radiation is high enough so that when they interact with matter they cause the formation of electrically charged particles or ion-pairs and break molecular bonds. These so-called ionising radiations are by their nature potentially harmful to life; at high doses they can be lethal and at lower doses can cause genetic damage. Ionising radiation occurs ...

  • Application of Monte Carlo Analysis for Assessing Radiation Doses and Risks to Humans

    ABSTRACTThis BIOMASS Theme 2 report has been produced by the Remediation Working Group, which is concerned with the evaluation of the reliability of dose and risk assessment methodologies applied in support of decisions related to the cost-effectiveness of risk reduction measures within an environmental remediation programme. Scenarios have been developed concerning the site contaminated by an ...


    By Oracle Crystal Ball GBU

  • Extensive remediation of superfund site - case study

    The 80 acre site, formerly a minerals processing facility, was operated primarily to recover lithium and other rare-earth minerals from ores. Raw ores were imported to the site for processing. During one phase of its operations, the facility also processed uranium ores for the government. The site was listed as by the U.S. Environmental Protection Agency (EPA) as a Comprehensive Environmental ...

  • Reduction of hexavalent chromium: photocatalysis and photochemistry and their application in wastewater remediation

    Hexavalent chromium present in wastewater discharge of galvanic industries is toxic to most microorganisms and potentially harmful to human health. This work examines the photochemical reduction of Cr(VI) with ethanol under ultraviolet (UV) and visible radiation, and photocatalytic reduction of Cr(VI) with TiO2 in the presence of ethanol under UV radiation. By means of different experimental ...


    By IWA Publishing

  • Remote control dredge prevents contamination at Fernald, Ohio nuclear remediation site

    When the operations manager at the Fernald, Ohio Super Fund Site Remedial Action Project needed a dredge to remediate sludge from one of four on-site waste (raffinate) pits, they required more than the usual dredging standards. The dredging operation was complicated with the possibility of unknown radon emissions, chemical contamination, and radiation that could be unleashed as material was ...

  • Wastewater containing Cr(VI) treatment using solar tubular reactor

    The hexavalent chromium, Cr(VI), which is generated in the electroplating process, is toxic to most organisms and potentially harmful to human health. The method generally used for remediation of wastewater containing Cr(VI) employs chemicals with high toxicity. This work proposes an alternative technology for the treatment of these wastewaters, based on photochemical reduction of Cr(VI) by ...


    By IWA Publishing

  • Regulatory low dose limits: from science to political correctness?

    The setting of regulatory low dose limits has become a topic of central importance for further radiation uses because of its close relationship to: the public acceptance of nuclear power as a safe, inexpensive, reliable, ecologically beneficial, and climatically neutral source of electricity; the use of various highly beneficial medical, industrial and research applications; and the exploding ...


    By Inderscience Publishers

  • Properties and Behavior of Radionuclides

    For the purposes of this document, radionuclides should be considered to have properties similar to those of other heavy metals.This does not imply that all radionuclides are heavy metals, but that the majority of sites requiring remediation of radioactively contaminated materials are contaminated with radionuclides that have similar properties. Like metals, the contaminants of concern are ...

  • Need for restoration of the nuclear knowledge management in Serbia

    Nuclear programmes in former Yugoslavia have been supported by comprehensive research and development (R&D), educational programmes and pertinent training in the country and abroad. Three research reactors and one nuclear power plant (NPP) were constructed and operated with the significant participation of domestic experts. Since 1989, the nuclear expertise has deteriorated considerably in ...


    By Inderscience Publishers

  • Radioactive Clean-up

    Radioactive, nuclear, or radiation clean-up is considered as the most dangerous, difficult, and costly remediation activity after a nuclear disaster or accident.  The contamination may be found in the air, water, and soil, as wells as equipment and buildings (USEPA, 2010). Radioactive material is unstable, while the nuclei of radioactive atoms emit ionizing radiation (i.e., alpha ...


    By IWA Publishing

  • Radioactive Clean-up

    Radioactive, nuclear, or radiation clean-up is considered the most dangerous, difficult, and costly remediation activity after a nuclear disaster or accident.  The contamination may be found in the air, water, and soil, as wells as equipment and buildings (USEPA, 2010).Radioactive material, unlike most matter, is inherently unstable. Over time, the nuclei of radioactive atoms emit what's ...


    By IWA Publishing

  • Development of an economical radon-resistant construction technique that is applicable in national radon-reduction programmes

    Radon is believed to be an important risk factor for lung cancer. Radon levels in some regions of Ramsar, a city in northern Iran, are up to 3700 Bq/m³. On the other hand, in the hot springs of Mahallat, in the central part of Iran, the indoor mean radon concentration in air is as high as 480 Bq/m³. In order to develop an economical radon-resistant construction technique, the radon-reducing ...


    By Inderscience Publishers

  • Geostatistical Methodology For Waste Optimization Of Contaminated Premises

    Summary At the end of process equipment dismantling, the complete decontamination of nuclear facilities requires the radiological assessment of residual activity levels of building structures. As stated by the IAEA: “Segregation and characterization of contaminated materials are the key elements of waste minimization”. From this point of view, the set up of an ...


    By Geovariances

  • Murco oil refinery milford haven

    TERRAM Erocell has been used on a significant earthworks contract designed to help safeguard the local environment around the Milford Haven Oil Refinery in South West Wales The contractor, Llanelli based Quantum, have been carrying out remediation works on an existing bund that lies between the site boundary and a storage lagoon used to retain potentially contaminated drainage water from the site ...

  • NORMs contamination treatment using Ivey-sol technology

    NORMs (naturally occurring radioactive materials) are found almost everywhere, and many natural materials, such as the earth’s crust, contain such radioactive materials. So what happens when oil and gas activities such as petroleum refining and natural gas extraction, disturb such radioactive material? They can alter the natural background radiation — the radiation that we are naturally exposed ...


    By Ivey International Inc.

  • Opinion: Nuclear Waste Management and New Build

    Keywords: nuclear power, Generic Design Assessment, CO2 emissions, radiological protection, thermal oxide reprocessing, Radioactive Substances Act, Ionising Radiations Regulations, decommissioning and remediation of nuclear sites INTRODUCTION The history of designing, constructing and commissioning new nuclear power stations in the UK is not, it must be ...


  • Single field mobilization completes site investigation and removal actions

    The Kentucky Research Consortium for Energy and the Environment (KRCEE) worked with the U.S. Department of Energy (DOE) last summer to introduce new approaches and technologies to the site cleanup program operating at the Paducah Gaseous Diffusion Plant (PGDP) in western Kentucky. A Triad demonstration was conducted at PGDP's Area of Concern (AOC) 492 that integrated several real-time ...

  • Increased demand for XRF analyser hire

    Steve Drake, NDT Market Manager at Ashtead Technology believes that XRF is one of the most important technologies in the company’s fleet of NDT and environmental testing instruments. “With a small amount of training, almost anyone can implement detailed inspections in a wide variety of applications, and with most instruments being lightweight and robust, XRF analysers are among the ...


    By Ashtead Technology Ltd

  • An inflatable tunnel seal stops flooding of world`s largest undeveloped uranium mine

    The Cigar Lake Mine, located in the Athabasca Basin of Northern Saskatchewan, Canada, is sitting on the world's largest undeveloped high-grade uranium deposit in the world. Operated and majority-owned by Cameco Corporation, Cigar Lake is expected to eventually provide more than 10% of the world's mined uranium. But to extract the uranium ore, Cameco has to overcome significant technical ...


    By Petersen Products Company

  • Closures of mine a new challenge for Romania

    AbstractThe mining activity is one of the oldest activity in Romania, dating from the year 100 B.C. The gold and silver ores represented one of the riches of our country. In time the economic content of metals diminuend, and the ore mines become non profitable. Due to this situation the best option of the State was the closure and ecological rehabilitation of the mines.The steps for the ...


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