Radiation Protection Dosimetry Advance Access originally published online on March 4, 2008
Radiation Protection Dosimetry 2008 130(3):269-284; doi:10.1093/rpd/ncn052
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Extremity dosimetry trial: Devonport Royal Dockyard
1 Employer during the trial: Devonport Royal Dockyard Ltd. (Employer as of January 2007: GE Healthcare, The Grove Centre, White Lion Road, Amersham, Buckinghamshire HP7 9LL, UK
2 Devonport Royal Dockyard Ltd, Devonport Royal Dockyard, Devonport, Plymouth PL1 4SG, UK
* Corresponding author: robert.x.kenyon{at}ge.com
Received October 23, 2007, amended December 10, 2007, accepted January 10, 2008
This trial was undertaken to assess extremity dosemeters, which were made available to Devonport Royal Dockyard and determine the most suitable to the site. The trial included operational and laboratory-based exposures. Operational exposures were within a submarine reactor compartment and a waste storage area. Laboratory exposures were undertaken using 241Am, 137Cs and 60Co sources to compare and contrast the dosemeters energy response. In addition, the low dose response and the response if placed in the incorrect orientation were also assessed. Ten passive and two active dosemeters were tested, with three highlighted as the most technically suitable, DSTL Harshaw DXT-RAD, HPA Harshaw EXT-RAD and the AMEC Panasonic UD-807A. The most technically suitable dosemeter was the DSTL Harshaw DXT-RAD, due to good responses within all aspects of the trial and the user's preference for the ring type design. The John Caunt ED2 electronic dosemeter 2 (ED2) also performed well, but suffered radio frequency interference.