Title :
RadScan 600-a portable instrument for the remote imaging of gamma contamination: its design and use in aiding decommissioning strategy
Author :
Hughes, K.A. ; Lightfoot, J.A.
Author_Institution :
British Nucl. Fuels plc, Sellafield, UK
Abstract :
BNFL Instruments RadScan 600 has been developed to allow the remote surveying of gamma radiation in a wide variety of environments. The device is based on a CsI crystal located in a tungsten collimator and is capable of detecting gamma rays with energies between 100 keV and 10 MeV. A colour CCD camera produces a visual image of the of the area undergoing survey. The key technical components of the device are described. The RadScan 600 has been used on a number of nuclear plants currently being decommissioned at Sellafield. The application of the device to the monitoring of a Windscale Pile chimney is presented. The monitoring of the chimney using RadScan 600 aided the decommissioning team to develop their strategy for the future decommissioning of the chimney
Keywords :
fission reactor decommissioning; gamma-ray detection; radiation monitoring; radioisotope imaging; remote sensing; solid scintillation detectors; 100 keV to 10 MeV; CsI; CsI crystal; RadScan 600; W; Windscale Pile chimney; colour CCD camera; decommissioning strategy; gamma contamination; portable instrument; remote imaging; remote surveying; tungsten collimator; Charge coupled devices; Charge-coupled image sensors; Collimators; Gamma ray detection; Gamma ray detectors; Gamma rays; Instruments; Monitoring; Optical imaging; Tungsten;
Conference_Titel :
Nuclear Science Symposium, 1996. Conference Record., 1996 IEEE
Conference_Location :
Anaheim, CA
Print_ISBN :
0-7803-3534-1
DOI :
10.1109/NSSMIC.1996.591500
