Radiation tests of an operational dosemeter for neutrons complying with IEC 1323
International conference on occupational radiation protection: protecting workers against exposure to ionising radiation, Geneva, 26-30 August 2002.
Q.Chau*, M. Ndontchueng-Moyo**, T.Lahaye*, S. Ménard*, T. Bolognese-Milsztajn*
*Institute for radioprotection and nuclear safety (IRSN), DPHD/Dosimetry Department, B.P. 17, F-92262 Fontenay-aux-Roses cedex, France
** IAEA Grant-holder, DESS Radioprotection Trainee at IRSN
Personal neutron dosimetry represents one of current difficulties in the field of workers radiological protection. The development of a new neutron dosemeter generation was necessary to comply with the recommendations of ICRP Publication 60 and to implement the neutron active dosimetry. Since 1993, the Institute for Nuclear Safety Protection (IPSN) leads, in association with EDF, an R&D study of a personal electronic dosemeter for neutrons. The technology transfer towards the SAPHYMO Company was started in 1998. Initially identified under the project name “DIEDAC 2”, the dosemeter trademark will be "Saphydose-n". This compact designed dosemeter allows estimating the personal dose equivalent Hp (10, a) in mixed neutron-gamma radiation fields. It will be adapted for any nuclear facility without prior knowledge of the neutron spectrum nor of the neutron-gamma ratio. In July 2000, a prototype was tested successfully during the evacuation of an irradiated fuel cask at the EDF nuclear power plant in Dampierre-en-Burly. During 2001 a pre-commercial dosemeter was tested under radiation following the CEI 1323 standard’s recommendations. We present here the results of these preliminary tests. In December 2001 the same pre-commercial dosemeter has been submitted to the CTHIR for homologation and marketing is waited before summer 2002.