radiological detection Articles

  • Aerial radiological systems, measurements and analysis

    This document describes data collection systems and procedures used by the US Department of Energy Aerial Measuring System (AMS) in response to a radiological emergency. The discussion is split into two parts: (1) those systems used on the fixed-wing aircraft and (2) those systems used on the helicopters. This split is principally caused by the final use of the data from each system. The ...


    By Inderscience Publishers

  • National system for prevention of nuclear and radiological terrorism in Lithuania

    Minimisation of the threat posed by nuclear and radiological terrorism and mitigation of its impact is one of the most important tasks for any state. Prevention of the diversion of nuclear and radioactive material is related to a number of measures, which include the physical protection of the nuclear industry, readiness for investigation of the appropriate incidents and accidents, emergency ...


    By Inderscience Publishers

  • Instrument selection and use for measurements in a radiological emergency

    A discussion of monitoring during a radiological emergency response is presented. This paper focuses on a response for the USA, but many principles would also apply for other countries. This paper starts with a discussion on instrument selection and preparation. Different scenarios based on materials involved and responder levels are presented with equipment concerns for each. This paper ...


    By Inderscience Publishers

  • Model evaluation of RIMPUFF within complex terrain using an 41Ar radiological dataset

    The newly updated atmospheric dispersion model RIMPUFF is evaluated using routine releases of 41Ar from the former HIFAR research reactor located in Sydney, Australia. A large number of 41Ar measurements from a network of environmental gamma detectors are used to evaluate the model under a range of atmospheric stability conditions within the complex terrain area. Model sensitivity of input ...


    By Inderscience Publishers

  • Radiological Evaluation of contaminated sites and soils VEgAS: an expertise and investigating vehicle

    Summary 1- Fontenay-Aux-Roses CEA Clean-up methodology For the denuclearisation of the first French nuclear research centre (CEA), the centre of Fontenay-aux-Roses started developing in 1999 a clean-up methodology to rehabilitate places that have been contaminated by radioactive materials. The structure of this methodology is comparable to the one that the ...


    By GEOVARIANCES

  • Chromosomal aberrations in radiation workers of radiology departments in Northern Iran-Babol

    We determined the frequency of chromosomal aberrations using the metaphase analysis method in radiation workers of radiology departments in Babol. Blood samples were prepared from 62 radiology workers and 29 individuals as controls, and lymphocytes were cultured in a culture medium. Results showed that the mean frequencies of the total chromosomal aberration in radiation workers are significantly ...


    By Inderscience Publishers

  • Nuclear tools for characterising radiological dispersion in complex terrain: evaluation of regulatory and emergency response models

    Routine operations of a nuclear research reactor and its facilities offer opportunities for collection of rare environmental tracer datasets which can be used for atmospheric dispersion model evaluation studies. The HIFAR reactor near Sydney, Australia, routinely emits the radioactive noble gas 41Ar, and other radionuclides such as 133Xe and 135Xe are also emitted from nearby radiopharmaceutical ...


    By Inderscience Publishers

  • Natural radionuclides in Niger delta sedimentary organic rock samples

    Thirty sedimentary organic rock samples were collected at different depths from three oil wells in the Niger Delta. The natural radionuclides in the samples were measured in order to determine their geochemical significance and radiological effect. The radionuclides were measured using gamma spectrometric technique. Natural occurring radionuclides identified were uranium, thorium and potassium. ...


    By Inderscience Publishers

  • Monitoring in case of emergency situations related to orphaned sources

    Orphaned sources may cause serious accidents as history has shown and in the past few years, attention for malevolent use of radioactivity has grown considerably. Firstly, this paper describes the context of the problem. We propose to introduce a scheme for the prevention of loss or abuse of sources. This programme includes administrative measures for strong sources, controlling mechanisms and ...


    By Inderscience Publishers

  • Chromosomal aberrations in Iranian radiation workers due to chronic exposure of X-irradiation

    The frequency of chromosomal aberrations in the peripheral blood lymphocytes of 65 radiology technologists working in hospitals in Tehran, Iran, who had been chronically exposed to X-rays, was analysed. Although film dosimetery did not show the maximal annual permitted dose (20 mSv per year) in any of the examined subjects, cytogenetic analysis detected fairly high levels of chromosomal ...


    By Inderscience Publishers

  • Background minimisation of HPGe detector by passive graded shielding

    A simple and economical passive graded shielding which is combination of low and high Z materials for HPGe detector for background radiation minimisation is developed for better identification of the peaks in acquired spectrum by reducing Compton continuum. The present paper discusses the design and advantages of the passive graded shielding (lead + copper + aluminium) which encloses the HPGe ...


    By Inderscience Publishers

  • Radiobiology worker risk assessment using stress indicators and proteomics

    Radiology is an essential technology in medicine and is used for organ diagnosis, radio–tracing and radiotherapy. The risks for the radiobiology workers have not been assessed sufficiently because measuring instruments fail to detect very low doses. This paper presents an investigation on the potential risks for radiobiology workers, due to the occupational exposure to low doses of irradiation. ...


    By Inderscience Publishers

  • Sabotage vulnerability of nuclear power plants

    There have been many recent studies of nuclear security focusing on terrorist assault, but this paper discusses methods equal in catastrophic potential: sabotage by individuals with a detailed knowledge of security procedures, plant layout and the functional nature of the critical components of a nuclear power plant. The paper looks only at sabotage without explosives or using very small amounts ...


    By Inderscience Publishers

  • A Monte Carlo simulation of a whole body counter

    The preparedness of response to the accidental incorporation of radionuclides into the human body by inhalation or ingestion is a subject of major concern due to the generalised use of ionising radiations in medical and industrial applications. Following a radiological or nuclear accident or in case of occupational exposure due to an accidental dispersion of radionuclides, a rapid methodology is ...


    By Inderscience Publishers

  • GOOD NEWS FOR DRINKING WATER Independent Test Lab Evaluates Instrumentation forDetecting Radiation in Drinking Water

    Since 9/11 and there are still holes in security of the nation’s infrastructure, particularly for drinking water. This security deficit is currently being addressed in some community water systems with water monitoring instruments. In the 90s the EPA developed a wish list for monitoring contaminants in drinking water. Since that time biological and chemical contaminants have been identified ...


    By Technical Associates

  • Online Instrumentation to Protect Wastewater Facilities from Toxic Chemicals

    ABSTRACTSecurity concerns are driving current research to develop means of detecting toxic chemicals in wastewater influents as few online instruments are currently available for this purpose. Online respirometers such as the STIPTox are the obvious choice using existing, established technology. One of these units was recently used successfully in the WERF project 03-CTS-7S “Feasibility Testing ...

  • What is Environmental Restoration?

    The U.S. Department of Energy's (DOE's) Environmental Restoration Program directs the assessment and cleanup of inactive sites and surplus facilities contaminated from previous defense and non-defense-related programs. All cleanup activities must comply with federal, state, Indian Nation, and local laws and regulations. In completing environmental restoration activities, DOE is committed to ...

  • Locus and Overhoff to Offer Real Time Tritium Monitoring and Compliance Software at Nuclear Facilities

    Locus Technologies (Locus), the industry leader in web-based environmental compliance and information management software, and Overhoff Technology Corporation, the world's leader in the design and manufacture of Tritium monitors and radiation monitoring systems, have partnered to offer a complete Tritium monitoring solution for the nuclear industry using Overhoff's Tritium instrumentation and ...


    By Technical Associates

  • 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 ...

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