Diagnosis of internal radionuclide contamination by mobile laboratories

Castagnet, X.; Amabile, J.-C.; Cazoulat, A.; Lecompte, Yannick; Carbonnieres, H. De; Laroche, Pierre

doi:10.1093/rpd/ncm173

Cited by 6 publications

(4 citation statements)

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“…The DL for 137 Cs was determined to be 420 Bq for a 10 min count, and this was increased to 2420 Bq with a ground surface contamination of 1000 kBq m −2 . The French Defence Radiation Protection Service has two types of mobile whole body monitoring vehicles (Castagnet et al 2007). The first of these contains four person monitoring stages and uses a 5.1 × 5.1 cm NaI(Tl) detector for each station.…”

Section: Shielded Systemsmentioning

confidence: 99%

“…Other systems using HPGe detectors have also been described in the literature. The transportable system operated by the Radiation and Nuclear Safety Authority in Finland uses a single HPGe detector with a shielded chair (Rahola et al 2006) and the Institut de Radioprotection et de Sûreté Nucléaire in France has a lead shielded bed with two HPGe detectors which can be used for americium-241 in lung measurements and radioiodine in thyroid measurements as well as for whole body measurements (Castagnet et al 2007).…”

Section: Shielded Systemsmentioning

confidence: 99%

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Review of methods to measure internal contamination in an emergency

Youngman

2015

J. Radiol. Prot.

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In the event of a radiation emergency, people close to the site of the incident may be exposed to radiation by external exposure, or as a result of intakes of radioactive material. For these incidents it may be necessary to monitor members of the public both for external and internal contamination. This work reviews currently available equipment for the assessment of internal exposure following an emergency. It concentrates on incidents involving the spread of radioactive material and on contamination by radionuclides which emit penetrating radiation. It is essential that this monitoring is carried out as soon as possible so that people who have been exposed at a level which could have an effect on health can be identified and receive prompt medical assessment. Proposed action levels to identify people who need medical attention are reviewed to determine the required sensitivity of monitoring equipment. For releases containing gamma-ray emitting radionuclides the best means of measuring internal contamination is to use detectors placed close to the body (whole body or partial body monitoring). Laboratory based whole body monitors could be used but these may well be inconveniently located and so equipment which can be deployed to the site of an incident has been developed and these are described. The need for rapid selection and prioritisation of people for monitoring, methods to deal with potentially high numbers of contaminated people and the requirement for a means of rapidly interpreting monitoring information are also discussed.It has been found that for many types of incidents and scenarios, systems based on unshielded high-resolution detectors and hand-held instruments do have the required sensitivity to identify people who require medical assessment.

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Section: Shielded Systemsmentioning

confidence: 99%

Section: Shielded Systemsmentioning

confidence: 99%

Review of methods to measure internal contamination in an emergency

Youngman

2015

J. Radiol. Prot.

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“…L'alimentation électrique est fournie par l'hôpital. La procédure de comptage et les caractéristiques techniques du détecteur sont les suivantes [8] : pour chaque personne, le temps d'acquisition est de 600 secondes. La limite de détec-tion est de 100 Bq.…”

Section: Matérielunclassified

Évaluation de l’exposition interne aux rayonnements ionisants du personnel du service de médecine nucléaire du Val-de-Grâce

Wassilieff¹,

Cazoulat²,

Bohand³

et al. 2012

Archives des Maladies Professionnelles et de l'Environnement

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“…Several mobile laboratories have been developed all over the world (Boddy, 1967;Hille et al, 2000;Bondarkov et al, 2001;Castagnet et al, 2007;Dantas et al, 2010). The French Institute for Radiological protection and Nuclear Safety (IRSN) has updated the former SCPRI fleet of Mobile Units (MUs) dedicated to emergency situations (Pellerin and Moroni, 1969).…”

Section: Introductionmentioning

confidence: 99%

An experimental study of detection limits and corresponding doses of IRSNin vivomonitoring vehicles in the case of post-accident scenarios

et al. 2014

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-The measurement performances of in vivo monitoring vehicles were studied considering an increase in the radiological background in areas where the population is not evacuated after a nuclear accident. The study focused on 137 Cs and 131 I Detection Limits (DLs) and corresponding doses, for adults and one-year-old children. These DLs for ground contamination were obtained experimentally using a grid of point sources. Then, the DLs and doses were calculated using the experimental data and a safety factor for two accident scenarios. For these scenarios the 137 Cs DL corresponds to a committed effective dose of 0.02 mSv. The 131 I DL corresponds to committed equivalent thyroid doses of 3 mSv (adult) and 30 mSv (one-year-old child). To guarantee a 45 mSv thyroid equivalent dose assessment for the child the surface activity of 131 I + 132 I + 133 I should be below 1.6 MBq/m 2 . This study shows that the vehicles can operate in a contaminated area where the population is not evacuated. However, in such a case, the contamination level outside and inside the vehicle should be kept stable to guarantee efficient body counting.

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Diagnosis of internal radionuclide contamination by mobile laboratories

Cited by 6 publications

References 0 publications

Review of methods to measure internal contamination in an emergency

Review of methods to measure internal contamination in an emergency

Évaluation de l’exposition interne aux rayonnements ionisants du personnel du service de médecine nucléaire du Val-de-Grâce

An experimental study of detection limits and corresponding doses of IRSNin vivomonitoring vehicles in the case of post-accident scenarios

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