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...
National Technical Information Service (NTIS)
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...
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...
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 ...
DOE Information Bridge
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 ...
Energy Citations Database
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)
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 ...
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 ...
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...
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)
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 ...
PubMed
... Accession Number : ADA412535. Title : DRDC Ottawa Participation in the SILENE Accident Dosimetry Intercomparison Exercise. June 10-21, 2002. ...
DTIC Science & Technology
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...
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 radiation fields were ...
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;...
Code of Federal Regulations, 2011
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. Participants from 13 ...
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 Dosimetry ...
Following the Three Mile Island Unit 2 (TMI-2) accident, it was identified that due to the unusual radiological conditions created, an improved thermoluminescent dosimetry (TLD) system was needed to support the cleanup and recovery. The deficiencies of the existing system were identified as an unsuitable dosimeter ...
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 ...
The use of chlorobenzene-ethanol-trimethylpentane solution (CET) in radiation dosimetry is based on radiolytic formation of hydrochloric acid which protonates a pH indicator, thymolsulphonphthalein. The high molar absorptivity of its red form at 552nm is responsible for a high sensitivity of the system: doses in the range 0.2-15Gy can be measured. Together ...
NASA Astrophysics Data System (ADS)
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 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 simulate three ...
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 ...
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 characterization of two critical assemblies for ...
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 at air stations and on ...
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 ...
... Title : The Theory and Practice of Radiation Dosimetry in the Radiation Hardness Testing of Electronic Devices and Systems. ...
The rationale and methods of the personnel neutron-dosimetry system used at SLAC are presented and discussed.
The Health Physics Research Reactor at Oak Ridge National Laboratory was used to evaluate performance characteristics of a high-level, solid-state, personnel-dosimetry system developed for the US Army for the rapid measurement of total(gamma plus neutron) radiation doses to soldiers in locations where tactical nuclear weapons could be used. The ...
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 ...
