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Irradiator Commissioning and Dosimetry for Assessment of LQ α and β Parameters, Radiation Dosing Schema, and in vivo Dose Deposition
Published on: March 11, 2021
Extremity dosimetry trial: Devonport Royal Dockyard
1Devonport Royal Dockyard Ltd, Devonport Royal Dockyard, Devonport, Plymouth PL1 4SG, UK. robert.x.kenyon@ge.com
Radiation Protection Dosimetry
|March 6, 2008
Summary
This trial assessed extremity dosemeters for a naval dockyard, identifying the DSTL Harshaw DXT-RAD as the most suitable. It demonstrated good performance in operational and lab settings, considering energy response and orientation.
Area of Science:
- Radiation Protection
- Dosimetry
- Occupational Health
Background:
- Extremity dosemeters are crucial for monitoring radiation exposure in high-risk environments.
- Devonport Royal Dockyard requires reliable dosimetry for personnel working near radiation sources.
Purpose of the Study:
- To evaluate the suitability of various extremity dosemeters for use at Devonport Royal Dockyard.
- To compare the performance of passive and active dosemeters under operational and laboratory conditions.
Main Methods:
- Conducted operational exposures in a submarine reactor compartment and waste storage area.
- Performed laboratory exposures using americium-241, cesium-137, and cobalt-60 sources.
- Assessed dosemeters' energy response, low dose response, and response to incorrect orientation.
Main Results:
- Ten passive and two active dosemeters were tested.
- DSTL Harshaw DXT-RAD, HPA Harshaw EXT-RAD, and AMEC Panasonic UD-807A were identified as most technically suitable.
- DSTL Harshaw DXT-RAD was the preferred choice due to comprehensive performance and user preference for its ring design.
- John Caunt ED2 electronic dosemeter (ED2) showed good performance but was affected by radio frequency interference.
Conclusions:
- The DSTL Harshaw DXT-RAD is recommended as the most suitable extremity dosemeter for the specified site.
- Dosemeter selection should consider energy response, low dose sensitivity, orientation effects, and potential interferences like radio frequency interference.
