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Title: Radiological mapping of facilities under dismantling process by digital autoradiography - 15230

Abstract

because safety standards have changed. In that context, radioactive waste management is a challenging task faced by existing nuclear power countries. Therefore, characterization is essential to classify wastes and to reduce costs. In many facilities, after the removal of glove boxes, fume cupboards and so on, the remaining materials on the floor, walls, and ceiling must be characterized. Gamma emitters can be detected remotely by commercial devices. However, analytical techniques to detect alpha and beta emitters in situ are generally not well suited for large area investigations. The Digital Autoradiography (DA) technique, initially dedicated to research in biology, was re-routed for final state characterization before facility demolition. It is based on the exposure of radio-sensitive phosphor screens on the materials to characterize. Phosphor screens, after a scanning process, provide a picture of the radioactivity, and are reusable several tens of times. This analytical technique is sensitive to all types of radioactivity, requires neither operators nor electricity during acquisition process, and produces only very few wastes. DA has already been tested in different facilities to obtain semi-quantitative values of C-14 and H-3 activities. Large amount of data gathered to cover the whole surface to be characterized. A Geographic Information System (GIS)more » associated with geostatistical method has been used to provide Radiological Mapping. This method to interpret Digital Autoradiography results has been proved very efficient to prepare remediation project. (authors)« less

Authors:
; ;  [1]
  1. CEA Saclay, DEN/DANS/DPC/SEARS/LASE, PC 171, 91191 Gif Sur Yvette (France)
Publication Date:
Research Org.:
WM Symposia, Inc., PO Box 27646, 85285-7646 Tempe, AZ (United States)
OSTI Identifier:
22822759
Report Number(s):
INIS-US-19-WM-15230
TRN: US19V0749067674
Resource Type:
Conference
Resource Relation:
Conference: WM2015: Annual Waste Management Symposium, Phoenix, AZ (United States), 15-19 Mar 2015; Other Information: Country of input: France; 6 refs.; Available online at: http://archive.wmsym.org/2015/index.html
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; AEROSOLS; AUTORADIOGRAPHY; CARBON 14; CEILINGS; DEMOLITION; DIGITAL SYSTEMS; FLOORS; GAMMA SOURCES; GEOGRAPHIC INFORMATION SYSTEMS; GLOVEBOXES; GLOVES; MAPPING; NUCLEAR FACILITIES; NUCLEAR POWER; PHOSPHORS; RADIOACTIVE WASTE MANAGEMENT; RADIOACTIVITY; REMEDIAL ACTION; SAFETY STANDARDS; TRITIUM; WALLS

Citation Formats

Fichet, Pascal, Goutelard, Florence, and Haudebourg, Raphael. Radiological mapping of facilities under dismantling process by digital autoradiography - 15230. United States: N. p., 2015. Web.
Fichet, Pascal, Goutelard, Florence, & Haudebourg, Raphael. Radiological mapping of facilities under dismantling process by digital autoradiography - 15230. United States.
Fichet, Pascal, Goutelard, Florence, and Haudebourg, Raphael. 2015. "Radiological mapping of facilities under dismantling process by digital autoradiography - 15230". United States.
@article{osti_22822759,
title = {Radiological mapping of facilities under dismantling process by digital autoradiography - 15230},
author = {Fichet, Pascal and Goutelard, Florence and Haudebourg, Raphael},
abstractNote = {because safety standards have changed. In that context, radioactive waste management is a challenging task faced by existing nuclear power countries. Therefore, characterization is essential to classify wastes and to reduce costs. In many facilities, after the removal of glove boxes, fume cupboards and so on, the remaining materials on the floor, walls, and ceiling must be characterized. Gamma emitters can be detected remotely by commercial devices. However, analytical techniques to detect alpha and beta emitters in situ are generally not well suited for large area investigations. The Digital Autoradiography (DA) technique, initially dedicated to research in biology, was re-routed for final state characterization before facility demolition. It is based on the exposure of radio-sensitive phosphor screens on the materials to characterize. Phosphor screens, after a scanning process, provide a picture of the radioactivity, and are reusable several tens of times. This analytical technique is sensitive to all types of radioactivity, requires neither operators nor electricity during acquisition process, and produces only very few wastes. DA has already been tested in different facilities to obtain semi-quantitative values of C-14 and H-3 activities. Large amount of data gathered to cover the whole surface to be characterized. A Geographic Information System (GIS) associated with geostatistical method has been used to provide Radiological Mapping. This method to interpret Digital Autoradiography results has been proved very efficient to prepare remediation project. (authors)},
doi = {},
url = {https://www.osti.gov/biblio/22822759}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jul 01 00:00:00 EDT 2015},
month = {Wed Jul 01 00:00:00 EDT 2015}
}

Conference:
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