... Accession Number : ADA412535. Title : DRDC Ottawa Participation in the SILENE Accident Dosimetry Intercomparison Exercise. June 10-21, 2002. ...

The fifteenth in the continuing series of Nuclear Accident Dosimetry Intercomparison Studies was held August 14--22, 1978 at the Oak Ridge National Laboratory. The Health Physics Research Reactor, operated in the pulse mode, served as the radiation source...

An international intercomparison of nuclear accident dosimetry systems was conducted during September 12-16, 1983, at Oak Ridge National Laboratory (ORNL) using the Health Physics Research Reactor operated in the pulse mode to simulate criticality acciden...

An international Intercomparison of Nuclear Accident Dosimetry Systems was held at Harwell in April 1975 under the auspices of the IAEA. The source of radiation was the pulsed reactor VIPER at AWRE Aldermaston. This paper presents the results of the measu...

In July 1995, LANL hosted an accident dosimetry intercomparison. When all reactors on the Oak Ridge Reservation were idled in 1988, the Health Physics Research Reactor (HPRR), which had been used for 22 previous intercomparisons dating from 1965, was shut...

DRDC Ottawa (and formerly as DREO) has participated in two NATO- sponsored and one TTCP-sponsored dosimetry intercomparisons. The SILENE international Accident Dosimetry Intercomparison Exercise at Valduc, France in June 2002 coincided with DRDC Ottawa wo...

The Dosimetry Applications Research (DOSAR) group at Oak Ridge National Laboratory has established a national and international program for dosimetry testing and intercomparison. Under this program there have been twenty-two nuclear accident dosimeter int...

An international intercomparison of criticality accident dosimetry systems took place in the SILENE reactor, in June 2002. Participants from 60 laboratories irradiated their dosemeters (physical and biological) using two different configurations of the reactor. In preparation for this intercomparison, the leakage ...

The 23rd nuclear accident dosimetry intercomparison was held during the week of June 12--16, 1995 at Los Alamos National Laboratory. This report presents the results of this event, referred to as NAD 23, as related to the performance of Sandia National La...

A simple and inexpensive Nuclear Accident Dosimetry (NAD) system for use in criticality accidents is described in this report. It consists of activation detectors of indium, gold, copper and sulfur for neutron dose estimates and thermoluminescent dosimeters (TLD) and radiophotoluminescent (RPL) dosimeters for gamma dose measurements. ...

... Title : Reference Dosimetry for the 1992 NATO Battlefield Dosimetry Intercomparison at the Army Pulse Radiation Facility. ...

The present paper summarises the activity carried out at the ENEA Radiation Protection Institute for updating the methodologies employed for the evaluation of the neutron and photon dose to the exposed workers in case of a criticality accident, in the framework of the 'International Intercomparison of Criticality Accident ...

... some recent accidents and the fear of radiological terrorism have led to the recognition that mutual assistance ... Coleman, C. N. and G. W. Parker. Radiation terrorism: what society needs from the radiob...

Since 1965, the Dosimetry Applications Research Facility at Oak Ridge National Laboratory has conducted periodic intercomparison and testing programs in neutron and gamma personnel dosimetry and criticality accident dosimetry. Recently, courses in these areas and criticality alarm testing also ...

An experiment was organised at Harwell to test nuclear accident dosimetry (NAD) systems from some 17 laboratories in 13 countries. Dosimeters were irradiated by the Viper reactor at Aldermaston which gave a well moderated neutron spectrum with a broad pea...

The twenty-second in a series of criticality accident dosimetry intercomparison studies was conducted at the Oak Ridge National Laboratory's Dosimetry Applications Research Facility during August 12-16, 1985. The Health Physics Research Reactor operated in the pulse mode over Storage Pit No. 1 was used to ...

DOE installations possessing sufficient quantities of fissile material to potentially constitute a critical mass, such that the excessive exposure of personnel to radiation from a nuclear accident is possible, are required to provide nuclear accident dosimetry services. This document describes the personal nuclear ...

The Nineteenth Nuclear Accident Dosimetry Intercomparison Study was held August 9 to 13, 1982, at the Oak Ridge National Laboratory using the Health Physics Research Reactor operated in the pulse mode to simulate nuclear criticality accidents. Participants from eight organizations measured neutron and gamma doses ...

In criticality accident dosimetry and more generally for high dose measurements, special techniques are used to measure separately the gamma ray and neutron components of the dose. To improve these techniques and to check their dosimetry systems (physical and/or biological), a total of 60 laboratories from 29 countries (America, ...

Two criticality dosimetry systems were tested by Czech participants during the intercomparison held in Valduc, France, June 2002. The first consisted of the thermoluminescent detectors (TLDs) (Al-P glasses) and Si-diodes as passive neutron dosemeters. Second, it was studied to what extent the individual dosemeters used in the Czech routine personal ...

The Seventeenth Nuclear Accident Dosimetry Intercomparison Study was conducted August 11-15, 1980, at the Oak Ridge National Laboratory. Nuclear criticality accidents with three different neutron and gamma ray energy spectra were simulated by operating the Health Physics Research Reactor in the pulse mode. ...

In July 1995, LANL hosted an accident dosimetry intercomparison. When all reactors on the Oak Ridge Reservation were idled in 1988, the Health Physics Research Reactor (HPRR), which had been used for 22 previous intercomparisons dating from 1965, was shut down for an indefinite period. The LANL group began ...

An international intercomparison of nuclear accident dosimetry systems was conducted during September 12 to 16, 1983, at Oak Ridge National Laboratory (ORNL) using the Health Physics Research Reactor operated in the pulse mode to simulate criticality accidents. Participants measured neutron and gamma doses at area ...

Mar 25, 2011 ... MicroRAD100TM, or Dosimetry Intercomparison and Miniaturization ... It measures the proton, electron, and cosmic ray flux for both total ...

An intercomparison of personnel monitoring dosimeters was conducted at Oak Ridge National Laboratory's DOSAR Facility. Ten independent laboratories and companies participated in an intercomparison of neutron and gamma-ray dosimeters used for routine personnel dosimetry. The dosimeters, which were sent through the ...

An international intercomparison of nuclear accident dosimetry systems was conducted during September 12-16, 1983, at Oak Ridge National Laboratory (ORNL) using the Health Physics Research Reactor operated in the pulse mode to simulate criticality accidents. This study marked the twentieth in a series of annual ...

Online Dosimetry Based on Optically Stimulated Luminescence Materials ... DIME-1 : The Passive Components of the Dosimetry Intercomparison and ...

... Components of the Dosimetry Intercomparison and Miniaturization Experiment; Online Dosimetry Based on Optically Stimulated Luminescence Materials ...

In 1999 and 2002, the EURADOS Working Group on Environmental Monitoring organised two European intercomparison exercises of national network systems used to provide early warning in case of a nuclear accident. In total, 12 European countries, represented by more than 40 scientists, participated in these two intercomparisons with more ...

The Health Physics Research Reactor (HPRR), used unshielded, with a 12-cm-thick Lucite shield or a 13-cm-thick steel shield, provided three neutron and gamma-ray spectra for personnel dosimetry intercomparison studies. The characterisitcs of these fields, such as neutron energy spectrum, intensity, and uniformity, had been measured previously during ...

During the period March through October 1989, the Sixth EULEP X-ray Dosimetry Intercomparison on whole-body irradiation of mice was performed. The intercomparison consisted of two irradiation series; the initial study comprised 15 participating institutes...

Contents are arranged as follows: description of the intercomparison procedure; radiation fields, production, monitoring and stability; dosimetry systems used by the participating groups; important factors in evaluation of dose; and analysis of the intercomparison. Conclusions and recommendations are given. (GHT)

Ruder Boskovi? Institute (RBI) criticality dosimetry system consists of a chemical dosimetry system for measuring the total (neutron + gamma) dose, and a thermoluminescent (TL) dosimetry system for a separate determination of the gamma ray component. The use of the chemical dosemeter solution chlorobenzene-ethanol-trimethylpentane ...

The Dosimetry Applications Research (DOSAR) Group at the Oak Ridge National Laboratory (ORNL) has conducted sixteen Neutron Personnel Dosimetry Intercomparison Studies (PDIS) since 1974. During these studies dosimeters are mailed to DOSAR, exposed to low-...

In 1983 a program of neutron dosimetry validation was undertaken at the TRIGA Mark F nuclear reactor at the Armed Forces Radiobiology Research Institute (AFRRI). Since the International Neutron Dosimetry Intercomparison (INDI) of 1973, the development of ...

The fourth Personnel Dosimetry Intercomparison Study was held at the Oak Ridge National Laboratory's Dosimetry Applications Research Facility during March 15-23, 1978. The Health Physics Research Reactor (HPRR) used unshielded, with a 12-cm-thick Lucite s...

The fifth Personnel Dosimetry Intercomparison Study (PDIS) was conducted at the Oak Ridge National Laboratory's (ORNL) Dosimetry Applications Research (DOSAR) facility on March 20-22, 1979. This study is the latest PDIS in the continuing series started at...

The twenty-first in a series of nuclear accident dosimetry (NAD) intercomparison (NAD) studies was conducted at the Oak Ridge National Laboratory's Dosimetry Applications Research Facility during August 6-10, 1984. The Health Physics Research Reactor operated in the pulse mode was used to simulate three ...

Suitability of Electron Paramagnetic Resonance (EPR) spectroscopy for criticality dosimetry was evaluated for tooth enamel, mannose and alanine pellets during the 'international intercomparison of criticality dosimetry techniques' at the SILENE reactor held in Valduc in June 2002, France. These three materials were irradiated in ...

Although the primary reason for the existence of the Los Alamos Critical Experiments Facility is to provide basic data on the physics of systems of fissile material, the physical arrangements and ability to provide sources of radiation have led to applications for all types of radiation dosimetry. In the broad definition of radiation phenomena, the facility has provided ...

Biological dosimetry, based on the analysis of dicentric chromosomes, is an internationally established, independent method applied in the area of radiation protection. The biodosimetry is mainly performed, in addition to physical dosimetry, with the aim of individual dose assessment, especially after unclear or suspected radiation dose exposures. However, ...

The third Personnel Dosimetery Intercomparison Study was held at the Oak Ridge National Laboratory Dosimetry Applications Research Facility during March 15--16, 1977. The Health Physics Research Reactor (HPRR), used unshielded, with a 12-cm-thick Lucite s...

The Twelfth Personnel Dosimetry Intercomparison Study was conducted at the Oak Ridge National Laboratory (ORNL) during April 14 to 17, 1986. Objectives of this study were to determine neutron dosimeter performance characteristics at neutron dose equivalen...

Seven groups from five countries participated in a neutron dosimetry intercomparison held in 1983 at the National Physical Laboratory. Measurements were made free-in-air and at three depths in a water-filled phantom in a collimated d + T neutron beam. The...

A total of twenty groups from nine countries participated in sessions of the European Neutron Dosimetry Intercomparison Project (ENDIP) which were held during 1975 at GSF, Munich-Neuherberg and TNO, Rijswijk. The data of all participants are collected, th...

As part of the European Research Council's Fourth Framework Programme, the EURADOS Action Group on Monitoring of External Exposures held an intercomparison of national network systems. This took place during May/June 1999 at the Ris� Natural Enviromental Radiation Measurement Station in Denmark and at the Underground Laboratory for Dosimetry and ...

The traveler attended the Seventh Congress of the International Radiation Protection Association (IRPA) in Sydney, Australia, April 11--15, 1988. This conference consisted of a comprehensive technical program with oral and poster presentations in all areas of radiation protection including several topics which were of special interest to the traveler; e.g., neutron dosimetry, ...

Neutron dose measurement and evaluation techniques in criticality accident conditions using a thermo luminescence dosemeter (TLD) was studied at the Transient Experiment Critical Facility (TRACY) of Japan Atomic Energy Research Institute (JAERI). In the present approach, the absorbed dose is derived from the ambient dose equivalent measured with a TLD, using the appropriate ...

The 23rd nuclear accident dosimetry intercomparison was held during the week of June 12--16, 1995 at Los Alamos National Laboratory. This report presents the results of this event, referred to as NAD 23, as related to the performance of Sandia National Laboratories (SNL) personal nuclear accident dosimeter (PNAD). ...

Electroformed Nickel, Inc. ... Success Story MicroRAD100", or Dosimetry Intercomparison and Miniaturization Experiement (DIME) � Space Micro, Inc. ...

... NRL was invited to participate in the International Neutron Dosimetry Intercomparison (INDI ... to the (n/gamma) sensitivities of the TLD's to account ...

... the physical factors (W,K) involved in ... the AFRRI TRIGA reactor support the ... MATERIALS), NUCLEAR REACTORS, CHAMBERS, CALORIMETERS ...

Success Story MicroRAD100", or Dosimetry Intercomparison and Miniaturization Experiement (DIME) � Space Micro, Inc. ... Electroformed Nickel, Inc. ...

This document reports the results of testing of the Hanford Personnel Nuclear Accident Dosimeter (PNAD) during a criticality accident dosimeter intercomparison exercise at the CEA Valduc Center on October 13, 14, and 15, 2009.

The Austrian Dosimetry Laboratory Seibersdorf, established and operated by the Austrian Federal Office of Measures and the Research Center Seibersdorf contains the national primary standards for radiation dosimetry. For photon radiation in the energy rang...

This edited transcript of a presentation on personnel neutron discusses the accuracy of present dosimetry practices, requirements, calibration, dosemeter types, quality factors, operational problems, and dosimetry for a criticality accident. 32 figs. (ACR)

The Dosimetry Applications Research (DOSAR) group at Oak Ridge National Laboratory has established a national and international program for dosimetry testing and intercomparison. Under this program there have been twenty-two nuclear accident dosimeter intercomparisons conducted with a frequency ...

'QUADOS', a Concerted Action of the European Commission, has run an intercomparison aimed at evaluating the use of computational codes for dosimetry in radiation protection and medical physics. This intercomparison was open to all users of Monte Carlo, analytic and semi-analytic codes or deterministic methods. Its main aim was to ...

The evaluation of the dose that a person received in a criticality accident can be difficult. Most accidents have occurred when the person was not wearing nuclear accident dosimetry and since the NRC no longer requires these dosimeters, future dose evalua...

... OCCUPATIONAL RADIATION PROTECTION ...835.1304 Nuclear accident dosimetry...individuals to radiation from a nuclear accident is possible...involved in a nuclear accident to determine...significant exposures to radiation occurred;...

The report describes details of the design, construction and properties of a transfer instrument for neutron dosimetry, following the recommendations of the IAEA panel on ''Fast Neutron Dosimetry: Characterization, Standardization and Intercomparison'' (1...

The biological dosimetry in radiation protection allows to evaluate the received dose by a potentially irradiated person from biological markers such chromosomal abnormalities. The technologies of Hybridization In Situ by Fluorescence (F.I.S.H) allow the ...

A neutron dosemeter which offers instant read-out has been developed for nuclear criticality accidents. The system is based on gels containing emulsions of superheated dichlorodifluoromethane droplets, which vaporise into bubbles upon neutron irradiation. The expansion of these bubbles displaces an equivalent volume of gel into a graduated pipette, providing an immediate ...

Several major dosimetric intercomparisons were carried out during the last year. At the National Institute of Radiological Sciences, Chiba-shi and the University of Tokyo, Tokyo, Japan, calorimetric and ionimetric intercomparisons of dose were performed. ...

This report contains the methods and results of dosimetry measurements made by the Radiological Physics Division, Armed Forces Radiobiology Research Institute, at the Army Pulsed Radiation Facility. The purpose of this work was to benchmark the radiation fields for a NATO intercomparison study of personnel dosimeters designed for use on a nuclear ...

Determination of gamma ray dose in mixed neutron+gamma ray fields is still a demanding task. Dosemeters used for gamma ray dosimetry are usually in some extent sensitive to neutrons and their response variations depend on neutron energy i.e., on neutron spectra. Besides, it is necessary to take into account the energy dependence of dosemeter responses to gamma rays. In this ...

Success Story MicroRAD100", or Dosimetry Intercomparison and Miniaturization Experiement (DIME) � Space Micro, Inc. ... Electroformed Nickel, Inc. ...

PI: Clive Dyer, QinetiQ/United Kingdom. DIME Dosimetry Intercomparison and Miniaturization Experiment PI: Peter McNulty, Clemson University ...

DIME -1: The Passive Components of the Dosimetry Intercomparison and. Miniaturization Experiment. Peter J. McNulty. 1. , Kelvin F. Poole ...

Success Story MicroRAD100", or Dosimetry Intercomparison and Miniaturization Experiement (DIME) � Space Micro, Inc. ... Electroformed Nickel, Inc. ...

Within EURADOS working group 2, a system for self-sustained intercomparisons for individual monitoring services for external radiation was developed. With the intercomparison results, the participants can show compliance within their quality management system, compare their results with those from other participants and develop plans for improvement of ...

The RB experimental reactor has operated at Vinca Institute of Nuclear Sciences since the end of April 1958. In this paper, neutron and gamma-ray spectra and corresponding dose quantities near the reactor, calculated by using the MCNP code, are compared to the measured values during the Third International Intercomparison Experiment on Nuclear Accident ...

Dose and exposure intercomparisons on a national or international basis have become an important component of quality assurance in the practice of good radiotherapy. A high degree of accuracy of gamma and x radiation dosimetry is essential in our internat...

An intercomparison was made of the performance of two thermoluminescent dosimetry (TLD) systems and conventional film badges in a routine gamma-ray personnel monitoring operation. Quartz fiber pocket dosimeters were worn in some cases also, but were read ...

As part of the NATO Dosimetry Intercomparison Project, a series of experiments were conducted at Aberdeen Proving Ground in September 1986 in order to determine neutron and gamma-ray doses delivered to various internal and external locations on an anthrop...

The results of an extended ex-vessel dosimetry campaign implemented in the Atucha I nuclear power plant are presented, including its assessment through a reactor dosimetry intercomparison project. The calculational model developed for the Atucha I reactor pressure vessel dosimetry was consolidated. By using these ...

The Tenth Personnel Dosimetry Intercomparison Study was conducted at the Oak Ridge National Laboratory during April 9-11, 1984. Dosemeter badges from 31 participating organizations were mounted on 40cm Lucite phantoms and exposed to a range of dose equiva...

Working Committee 4 of EURADOS (the European RAdiation Dosimetry Group) have organized an intercomparison of unfolding codes used for deriving neutron spectra from Bonner sphere data. In July 1987 data for the exercise were circulated to a number of poten...

In the framework of the Istituto Superiore di Sanita (ISS, Italian National Institute of Health) project 'Continuous Quality Improvement in Radiotherapy' a pilot project of dosimetry intercomparison among 16 Italian Radiotherapy Centres has been promoted....

In support of neutron dosimetry needs at Union Electric's Callaway nuclear plant, an intercomparison of a variety of neutron detection systems was performed. Eight different neutron detection systems were tested in four different neutron fields, utilizing facilities at the Missouri University research reactor (MURR) and the Southwest Radiation ...

The American Association of Physicists, under the authority of it's Radiation Therapy Committee, has establised a Task Group (No. 20) to conduct intercomparisons of absorbed dose at heavy charged particle radiotherapy facilities and to establish a protocol for the dosimetry of heavy charged particle therapy beam. This paper reports the activities ...

The American Association of Physicists, under the authority of it's Radiation Therapy Committee, has established a Task Group (20) to conduct intercomparisons of absorbed dose at heavy charged particle radiotherapy facilities and to establish a protocol for the dosimetry of heavy charged particle therapy beam. This paper reports the activities and ...

The fourteenth Personnel Dosimetry Intercomparison Study (i.e., PDIS 14) was conducted during May 1-5, 1989. A total of 48 organizations (33 from the US and 15 from abroad) participated in PDIS 14. Participants submitted by mail a total of 1,302 neutron a...

The thirteenth Personnel Dosimetry Intercomparison Study (i.e., PDIS 13) was conducted during April 1987 as a joint effort by Oak Ridge National Laboratory's (ORNL) Dosimetry Applications Research Group and the Southwest Radiation Calibration Center at th...

...the calibration, intercomparison, and comparisons of its dosimetry equipment done in accordance...each calibration, intercomparison, or comparison, the record must include� (1...was determined from the calibration or comparison or the apparent correction factor...

A collaboration of the EURADOS working group on 'Internal Dosimetry' and the United States Transuranium and Uranium Registries (USTUR) has taken place to carry out an intercomparison on measurements and Monte Carlo modelling determining americium deposited in the bone of a USTUR leg phantom. Preliminary results and conclusions of this ...

... Scoring (physically counting) of chromosome aberrations (damaged genetic material) in peripheral blood lymphocytes is presently accepted as the ...

Several intercomparison exercises were organised by the International Atomic Energy Agency (IAEA) on the determination of operational quantities at the regional or interregional basis. In East Asia region, a third phase of the intercomparison finished in mid 2004. It was organised within the frame of the Regional Cooperation Agreement (RCA) as a follow-up ...

Dose and exposure intercomparisons on a national or international basis have become an important component of quality assurance in the practice of good radiotherapy. A high degree of accuracy of ..gamma.. and x radiation dosimetry is essential in our international society, where medical information is so readily exchanged and used. The value of accurate ...

This paper summarises the experience gained by the Ciemat External Dosimetry Service (EDS) in the environmental dosimetry intercomparisons organised by the US Department of Energy. During the three latest intercomparisons. important dosimetry aspects such as energy calibration, energy response, ...

The Oak Ridge National Laboratory (ORNL) Environmental, Safety, and Health Emergency Response Organization has the responsibility of providing analyses of personnel exposures to neutrons and gamma rays from a nuclear accident. This report presents the technical and philosophical basis for the dose assessment aspects of the nuclear accident ...

From feedback experience from recent radiation accident cases, in addition to biological dosimetry and physical dosimetry based on Monte Carlo calculations or experimental means, there is a need for complementary methods of dosimetry for radiation accident. Electron paramagnetic resonance (EPR) ...

The development of two new probabilistic accident consequence codes, MACCS and COSYMA, was completed in 1990. These codes estimate the consequence from the accidental releases of radiological material from hypothesized accidents at nuclear installations. ...

The development of two new probabilistic accident consequence codes, MACCS and COSYMA, was completed in 1990. These codes estimate the consequence from the accidental releases of radiological material from hypothesized accidents at nuclear installations. ...

A methodology has been developed for a dosimetry inter-comparison of intensity modulated radiation therapy (IMRT) delivery in Australasia. The inter-comparison is part of site credentialing for those sites participating in the prostate fractionated irradiation trial (PROFIT) for intermediate-risk prostate patients developed by the ...

Three aspects of a quality assurance program for neutron fluence measurements as implemented by the Radiation Dosimetry Laboratory at Sandia National Laboratories are discussed. These elements are calibrations, routine checks of system performance, and in...

Neutron activation data are important for dosimetry, radiation-damage and production of long-lived activities. For fusion energy applications, it is required to develop 'low-activation materials' from the viewpoints of safety, maintenance and waste dispos...

The use of a portable electronic device in accident dosimetry has been investigated. The thermoluminescence properties of a surface-mount alumina-rich ceramic resonator from a USB flash drive were investigated. The following characteristics were verified: the absence of a zero-dose signal, gamma dose response, dose recycling behaviour, fading and optical ...

Several new cross section libraries, such as ENDF/B-VI(release 2), IRDF-90,JEF-2.2, and JENDL-3 Dosimetry, have recently been made available to the dosimetry community. the Sandia National Laboratories (SNL) Radiation Metrology Laboratory (RML) has worked with these libraries since pre-release versions were available. this paper summarizes the results of ...

The QUADOS EU cost shared action conducted an intercomparison on the usage of numerical methods in radiation protection and dosimetry. The eight problems proposed were intended to test the usage of Monte Carlo and deterministic methods by assessing the accuracy with which the codes are applied and also the methods used to evaluate uncertainty in the answer ...

In this report the results of the pilot dosimetry intercomparison for external beams performed in the framework of the Istituto Superiore di Sanita (ISS, Italian National Institute of Health) project 'Continuous Quality Improvement in Radiotherapy' are pr...

The report includes the papers presented at the fourth information seminar on the radiation protection dosimeter intercomparison program which was held at the National Institute of Public Health in Bilthoven from 25 to 27 October 1982. It contains an acco...

Fifteen Spanish institutions took part in the European intercomparison of dosimeters promoted by DGXI of the EEC and steered by the German National Laboratory, PTB. The aim was to ascertain the measurement errors in the assessment of air kerma for the ene...

The Ninth Personnel Dosimetry Intercomparison Study was conducted during April 19-21, 1983, at the Oak Ridge National Laboratory. Dosemeters from 33 participating agencies were mounted on water-filled polyethylene elliptical phantoms and exposed to a rang...

Methods of retrospective dosimetry, including luminescence and electron paramagnetic resonance spectroscopy (EPR), rely on measurement of accident dose absorbed by naturally occurring materials - ceramics in the case of both thermoluminescence (TL) and op...

There is an increased need for after-the fact dosimetry because of the high risk of radiation exposures due to terrorism or accidents. In case of such an event, a method is needed to make measurements of dose in a large number of individuals rapidly and with sufficient accuracy to facilitate effect...

The neutron dosimetry system incorporated in the NTS personnel dosimeter and the method of using it for nuclear accident dosimetry (NAD) are described. Details of the calibration procedure are given. Some useful cross sections and other detailed data are tabulated. (auth)

Investigations of thermoluminescence of lithium tetraborate activated with Dy, Mn and Eu and calcium sulphate activated with Dy caused by irradiation have been described. Both kinds of materials may be used in military and accident dosimetry.

Since 1974, seven annual personnel dosimetry intercomparison studies have been conducted at the Oak Ridge National Laboratory using the Health Physics Reactor. These studies have produced more than 2000 measurements by 72 participating organizations of neutron and gamma dose equivalents between 0.1 to 15.0 mSv in six mixed radiation fields. The relative ...

The program contained in this Handbook provides a significant advance in the field of radiation protection through a structured means for assuring the quality of personnel dosimetry performance. Since personnel dosimetry performance is directly related to the assurance of worker safety, it has been of key interest to the Department of Energy. Studies ...

The increasing risk of a mass casualty scenario following a large scale radiological accident or attack necessitates the development of appropriate dosimetric tools for emergency response. Luminescence dosimetry has been reliably applied for dose reconstruction in contaminated settlements for several decades and recent research into new materials carried ...

An Intercomparison Programme is being carried out in Argentina for individual monitoring services. The programme was designed to test, on a voluntary basis, the performance of the laboratories that provide individual monitoring services for X and gamma radiation fields in the range from low-level dose up to 100 mSv. Irradiations were performed in full accordance with ISO ...

Dosimetry at high energy particle accelerators is discussed with emphasis on physical measurements which define the radiation environment and provide an immutable basis for the derivation of any quantities subsequently required for risk evaluation. Results of inter-laboratory dosimetric comparisons are reviewed and it is concluded that a well-supported systematic program is ...

The REB dosimetrists also are collaborating with the International Agency for Research on Cancer (IARC) to develop common methods of dose estimation for the Chornobyl studies and were actively involved in the activities of the United Nations Chernobyl Forum.

Proceedings of the First Symposium on the Nuclear Accident Dosimetry Programi Techniques and Uses are presented. Topics covered include justification of the general system, descriptions of gamma and neutron systems, energy-response calculations of threshold-detector unlts, radiation-leakage calculations for critical assemblies, radiation leakage ...

... Animals were irradiated with Co gamma rays to simulate the nonuniform irradiation which do occur in victims of radiation accidents. ...

... on biological dosimetry are included. Apart from direct medical care of radiation injuries, the socioeconomic problems associated with ... some of the recent radiological accidents and the medical care un...

 What's Inside Home About the Accident Studies Dosimetry Selected Publications Events Research Staff Collaborators Oversight Research Opportunities Contact Us  Useful Links Radiation Epidemiology Branch Division of Cancer Epidemiology & Genetics National

 What's Inside Home About the Accident Studies Dosimetry Selected Publications Events Research Staff Collaborators Oversight Research Opportunities Contact Us  Useful Links Radiation Epidemiology Branch Division of Cancer Epidemiology & Genetics National

 What's Inside Home About the Accident Studies Dosimetry Selected Publications Events Research Staff Collaborators Oversight Research Opportunities Contact Us  Useful Links Radiation Epidemiology Branch Division of Cancer Epidemiology & Genetics National

... A. G. Tsov'yanov. Retrospective Dosimetry of Accident Remediation Personnel at the Chernobyl Nuclear Power Plant. Seda-Style, Kiev, 1996. Ministry of Atomic Energy of the USSR, Standards of Radiation Safet...

 What's Inside Home About the Accident Studies Dosimetry Selected Publications Events Research Staff Collaborators Oversight Research Opportunities Contact Us  Useful Links Radiation Epidemiology Branch Division of Cancer Epidemiology & Genetics National

 What's Inside Home About the Accident Studies Dosimetry Selected Publications Events Research Staff Collaborators Oversight Research Opportunities Contact Us  Useful Links Radiation Epidemiology Branch Division of Cancer Epidemiology & Genetics National

 What's Inside Home About the Accident Studies Dosimetry Selected Publications Events Research Staff Collaborators Oversight Research Opportunities Contact Us  Useful Links Radiation Epidemiology Branch Division of Cancer Epidemiology & Genetics National

Accurate assessments of doses received by individuals exposed to radiation from nuclear accidents and incidents such as those at Hiroshima and Nagasaki, the Nevada test site, Cheliabinsk and Mayak are required for epidemiological studies seeking to establ...

Several definitions of a radiation emergency are given, and several improvements that should be made in emergency procedures are outlined. The AEC experience in radiation accidents and its methods for coping with them are described. Personnel dosimetry, exposures of rescue teams, and radiation surveying of large areas are discussed. (D.L.C.)

... or a medical accident or an act of terrorism, internalization of radionuclides poses a challenge for assessment ... wounds. Although seemingly intended primarily for radiological accident victims (work wa...

A comprehensive review of accident neutron dosimetry using blood and hair analysis was performed and is summarized in this report. Experiments and calculations were conducted at Oak Ridge National Laboratory (ORNL) and the University of Tennessee (UT) to ...

At 10:59 AM (PST), Saturday, April 7, 1962 a criticality accident occurred in a plutonium waste chemical recovery facility at the Hanford Atomic Products Operation, operated for the Atomic Energy Commission by the General Electric Company. Four men were hospitalized but were released after medical observation and after estimates of the radiation doses received were available. ...

In 2006, the European Radiation Dosimetry (EURADOS) Working Group on Environmental Radiation Monitoring (WG3) organised a third European intercomparison of dosimetry systems operated in national early warning networks. Similar to the intercomparisons in 1999 and 2002, the main aim of this exercise was to support ...

The evaluation of the dose that a person received in a criticality accident can be difficult. Most accidents have occurred when the person was not wearing nuclear accident dosimetry and since the NRC no longer requires these dosimeters, future dose evaluations may have to be based on body activations and ...

The overview of the results of development, verification and application of the methods of individual retrospective physical dosimetry among population of settlements contaminated with radionuclides, which suffered from irradiation as a result of the accident in Chernobyl NPP, and among the population located in the vicinity of the Semipalatinsk nuclear ...

The author of this article discusses the world's most serious nuclear accident to date: the Chernobyl nuclear accident of April 1986. His major focus is on the short-term medical consequences of the accident, including reduction of exposure to persons at risk, evaluation of persons potentially affected, dosimetry, ...

A system of dosimetry for persons involved in accidental criticality excursions is presented as part A of a two part report. The information is arranged to be useful as a reference for those responsible for implementing the system. Part A also contains a review and re-evaluation of the dosimetry of previous accidents and a ...

This collection of reports from the International Commission on Radiation Units and Measurements (ICRU) covers the period from 1976-1980. Report 24: Determination of absorbed doses in a patient by beams of X or gamma rays in radiotherapy procedures. Report 25: Conceptual basis for the determination of dose equivalent. Report 26: Neutron dosimetry for biology and medicine. ...

Under the auspices of the Regional Coordination Agreement for Latin America, representatives of the eight member states have participated in a project to improve radiological protection for workers exposed to unsealed sources of radiation. The design of the project was based on information obtained from a questionnaire circulated among the participants, from which the initial status of internal ...

As a result of investigations and intercomparison measurements organised from 1996 to 1999 by PTB, several types of personal dosemeters, all based on TLD, were selected by the dosimetry services for the measurement of the personal dose equivalent Hp(0.07) in beta and/or photon radiation fields. These dosemeters have now the status of legal personal beta ...

The objective of the 3rd International Intercomparison on Electron Paramagnetic Resonance (EPR) Tooth Dosimetry was the evaluation of laboratories performing tooth enamel dosimetry below 300 mGy. Participants had to reconstruct the absorbed dose in tooth enamel from 11 molars, which were cut into two halves. One half of each tooth was ...

Since 1974, neutron personnel dosimetry intercomparison studies (PDIS) have been conducted annually at the Oak Ridge National Laboratory's (ORNL) Dosimetry Applications Research Facility. During these studies, neutron dosimeters are mailed to ORNL, exposed to low-level (less than 15 mSv) dose equivalents in a variety of ...

To provide an opportunity for dosimetrists to test and calibrate their neutron personnel monitoring systems, the staff of the Dosimetry Applications Research Facility at the Oak Ridge National Laboratory (ORNL) has conducted personnel dosimetry intercomparison studies (PDIS) periodically since 1974. During these studies, neutron ...

The measurement of radioactivity concentrations in urine samples is an important tool for monitoring possible radionuclide intakes by occupationally exposed workers, especially for radionuclides emitting alpha or beta radiation. Quality assurance requires systematic intercomparisons involving all laboratories responsible for these measurements. Such analyses were performed by ...

This document contains the text of an oral presentation on dosimetry of analytical x-ray equipment presented at the Denver X-Ray Conference. Included are discussions of sources of background radiation, exposure limits from occupational sources, and the relationship of these sources to the high dose source of x-rays found in analytical machines. The mathematical basis of x-ray ...

An International Neutron Dosimetry Intercomparison (INDI) was carried out in 1973 at the Radiological Research Accelerator Facility (RRAF) of Brookhaven National Laboratory under the sponsorship of the International Commission on Radiation Units and Measurements (ICRU). Fourteen groups of scientists, from six countries, performed measurements to determine ...

The development of high linear energy transfer (LET), passive radiation dosimetry and spectrometry is needed for the purpose of accurate determination of equivalent doses and assessment of health risks to astronauts on long duration missions. Progress in the following research areas is summerized: intercomparisons of cosmic ray equivalent dose and LET ...

As part of the EU Fifth Framework Programme IDEAS project 'General Guidelines for the Evaluation of Incorporation Monitoring Data', and in collaboration with the International Atomic Energy Agency, a new intercomparison exercise for the assessment of doses from intakes of radionuclides was organised. Several cases were selected, to cover a wide range of practices in the ...

An intercomparison of high-energy neutron personnel dosimeters was performed to evaluate the uniformity of the response characteristics of typical neutron dosimeters presently in use at US Department of Energy (DOE) accelerator facilities. It was necessary to perform an intercomparison because there are no national or international standards for ...

General aspects of applying the method of retrospective dose estimation by electron paramagnetic resonance spectroscopy of human tooth enamel (EPR dosimetry) to the population residing in the vicinity of the Semipalatinsk nuclear test site are analyzed and summarized. The analysis is based on the results obtained during 20 years of investigations conducted in the Medical ...

The application of thermoluminescence dosimetry to environmental monitoring, particularly in the vicinity of nuclear facilities, is discussed. The results of an intercomparison of TLDs and simultaneous TLD and ionization chamber measurements are presented. Techniques for interpreting measurements made in the environs of nuclear facilities are discussed and ...

This report presents status of external and internal dose assessment of workers and introducing the structure of National Dose Registry System of Iran (NDRSI). As well as types of individual dosemeters in use, techniques for internal dose assessment are presented. Results obtained from the International Atomic Energy Agency intercomparison programme on measurement of personal ...

New thermal neutron irradiation facilities to perform cell and small-animal irradiations for Boron Neutron Capture Therapy research have been installed at the Missouri University Research Reactor and at the RA-3 research reactor facility in Buenos Aires, Argentina. Recognizing the importance of accurate and reproducible physical beam dosimetry as an essential tool for ...

Panasonic thermoluminescent dosimeters (TLDs) are used as the photon dose assessment part of the personal nuclear accident dosimeter (PNAD) and may be used for the same purpose with the fixed nuclear accident dosimeter (FNAD). To demonstrate compliance wi...

To provide an opportunity for dosimetrists to test and calibrate their personnel neutron monitoring systems in a variety of incident radiation fields, the staff of the Dosimetry Applications Research (DOSAR) Facility at the Oak Ridge National Laboratory (ORNL) has conducted personnel dosimetry intercomparison studies (PDIS) ...

Alanine boron hydrate was synthesized for its possible use as intercomparison dosimeter for thermal neutron irradiation. The irradiations were performed in the Nuclear Reactor of the Nuclear Center of Mexico. The salt was prepared by reacting alanine and ...

There is a continuing need for standards in neutron monitoring. A discussion of special problem areas and the benefits of intercomparisons is given. The RBE for leukemia induction in the survivors of the nuclear bombings of Hiroshima and Nagasaki is greater than ten for absorbed doses in the bone marrow of less than 100 rads; this may have an important impact on neutron ...

Contents: Absorption of high-energy x-rays and electrons; Measurement of absorbed dose for high-energy radiations; Intercomparison and calibration of high-energy x-rays and electrons; Procedures and experience in treatment planning with high-energy x-rays...

and exposure times for five 125 I film calibrations....................................... 55 6. Air dose rate the dose to tissue upstream from the tumor when performing external beam therapy and (2) ensure that most) comparing film-dose curves established by several radionuclides and 6MV external beam. More recently

Three aspects of a quality assurance program for neutron fluence measurements as implemented by the Radiation Dosimetry Laboratory at Sandia National Laboratories are discussed. These elements are calibrations, routine checks of system performance, and interlaboratory comparisons. Historical data are presented for interlaboratory comparisons which illustrate nominal agreement ...

A state-of-the-art survey of current research is presented in the form of a series of short articles which includes X-ray dosimetry intercomparison (EULEP), testing of lyoluminescent materials for the 25-krad to 2.5-Mrad dose range, behaviour of radioacti...

The Dosimetry Applications Research (DOSAR) Group at the Oak Ridge National Laboratory (ORNL) has conducted sixteen Neutron Personnel Dosimetry Intercomparison Studies (PDIS) since 1974. During these studies dosimeters are mailed to DOSAR, exposed to low-level (typically in the 0.3 -- 5.0 mSv range) neutron dose equivalents in a ...

This report describes a dosimetry intercomparison conducted between the Armed Forces Radiobiology Research Institute (AFRRI) and the National Bureau of Standards (NBS). The project was undertaken as part of an overall program to validate the reliability and credibility of the neutron dosimetry system used with the AFRRI TRIGA reactor ...

Thermoluminescence dosimetry (TLD) has been available for dosimetry of ionising radiation for nearly 100 years. The variety of materials and their different physical forms allow the determination of different radiation qualities over a wide range of absorbed dose. This makes TL dosimeters useful in radiation protection where dose levels of microGy are ...

The assurance of worker radiation safety is directly related to the performance of personnel dosimetry. The US Department of Energy (DOE) has long recognized this critical relationship and has addressed this issue by instituting the DOE Laboratory Accreditation Program (DOELAP) which strives to improve the quality of personnel dosimetry through performance ...

CR39 proton sensitive track detectors were greeted by the radiation protection community at the end of the last decade as a major breakthrough for personnel neutron dosimetry. A number of laboratories eagerly began research on application of CR39 to their dosimetry needs. However, in the last two or three years the enthusiasm has subsided, and many health ...

The International Reactor Dosimetry File IRDF-2002 contains cross-section data with uncertainty information in the form of covariance matrices for 66 dosimetry reactions and other specific nuclear reaction data of more general interest. New cross-section evaluations have become available recently that re-define some of these dosimetry ...

The EUropean RAdiation DOSimetry Group (EURADOS) initiated in 2005 the CONRAD Project, a Coordinated Network for Radiation Dosimetry funded by the European Commission (EC), within the 6th Framework Programme (FP). The main purpose of CONRAD is to generate a European Network in the field of Radiation Dosimetry and to promote both ...

The Institute of Radiation Protection and Nuclear Safety (IRSN) organized a biological dosimetry international intercomparison with the purpose of comparing (i) dicentrics yield produced in human lymphocytes; (ii) the gamma and neutron dose estimate according to the corresponding laboratory calibration curve. The experimental reactor SILENE was used with ...

In August 2009, almost 1000 passive extremity dosemeters were irradiated at the Dosimetry Laboratory Seibersdorf as part of the EURADOS intercomparison IC2009. Forty-four European individual monitoring services participated, with a total of 59 dosimetry systems (46 finger ring, 4 finger tip and 9 wrist/ankle dosemeter systems). ...

A dosimetry intercomparison was held among the five agencies in Canada that are recognized by the Atomic Energy Control Board as competent to perform external dosimetry. Exposures of thermoluminescent dosimeter badges were made under operational conditions to radiation fields in Candu nuclear generating stations. Details of the method ...

A dosimetry intercomparison was held among the five agencies in Canada that are recognized by the Atomic Energy Control Board as competent to perform external dosimetry. Exposures of thermoluminescent dosimeter badges were made under operational conditions to radiation fields in Candu nuclear generating stations. Details of the method ...

The mission of the Savannah River Site (SRS) includes working with fissionable materials. A program is in place, therefore, to assess neutron and gamma doses to individuals in the event of a criticality accident at SRS. The program consists of a method to...

... context of accidental or intentional radiation exposures (nuclear ... teeth from the potential victims. Up to now, most studies focused on the ... ...

On September 2nd 1982 one of the employees of the gamma-irradiation facility at Institute for Energy Technology, Kjeller, Norway entered the irradiation cell with a 65.7 kCi *sp60*Co- source in unshielded position. The victim received an unknown radiation...

... and D. C. Lloyd. Easy biodosimetry for high-dose radiation exposure using drug-induced, prematurely condensed chromosomes. Int. J. ... OF RETROSPECTIVE DOSIMETRY TECHNIQUES FOR EXTERNAL IONISING RADIATION...

... an accidental intake of tritium (20) and for Chernobyl clean-up workers (21). Among several mathematical models ... protracted irradiation was highlighted by the Goiania and Chernobyl accidents (6, 7, 21,...

Radiation protection research programs are summarized. The main fields are: ionizing and non-ionizing radiation, radioactive wastes, radiation accidents, dosimetry, epidemiology, radiobiology and radioecology. (Atomindex citation 24:055145)

In order to obtain information on radiation doses to the intestine, doses were determined in dogs for beta-emitters that might be delivered to critical cells in the bowel in the event of an accident. Thermoluminescent dosimeters were implanted beneath the...

An overview of dose concepts (ion doses, energy doses, equivalent doses, GSD, effective equivalent doses) and of radiation exposure of humans with an appendix dealing with the additional radiation exposure brought about by the Chernobyl accident. (ERA cit...

In the intervening period since the first conception of the accident consequence model UFOMOD of the German Risk Study, new scientific information has accumulated. Important are the newest recommendations of the ICRP 30 concerning the calculation of the d...

Electron paramagnetic resonance spectroscopy (EPR) of tooth enamel is a relatively new technique for retrospective dosimetry that in the past two years has seen increasing effort towards its development and evaluation. Efforts have centered on determining the accuracy which may be achieved with current measurement techniques as well as the minimum doses detectable. The study ...

Retrospective dosimetry using glass has been investigated. Radiation-induced signals have been surveyed for a large number of watch glasses and display windows of mobile phones with TL and EPR techniques in order to study the variability of dosimetric properties among the different types of samples. Dose response, signal stability, and effects of storage conditions are ...