Model of occupational exposure of workers performing inspection of welded joints
https://doi.org/10.21514/1998-426X-2024-17-3-125-132
Abstract
A model of occupational exposure to gamma flaw detector operators working with portable flaw detectors in the field has been developed. The initial data for the development and verification of the model were the results of measurements of the characteristics of the gamma radiation field at the workplaces of flaw detectors and data from individual dosimetric monitoring. The relationships between the measured (H*(10), Hp(10)) and protection (effective dose) quantities (conversion coefficients) were determined using calculations and phantom experiments simulating three main operations of the full production cycle: transportation of the flaw detector to the place of X-raying of the product, installation of a flaw detector to perform x-raying and X-raying of the product. As a result of the study, it was found that more than 90% of the dose contribution to the readings of an individual dosimeter is due to the installation of the flaw detector in the working position and X-raying of the product. The values of the conversion coefficients for these operations in the form of the ratio of the effective dose values and the readings of dosimeters (Hp(10)) located on the worker's body at chest level (standard place) and abdominal level differ little for both positions of individual dosimeters. The use of maximum conversion coefficient value of 0.8 Sv/Sv corresponding to the operation of X-raying of the product will ensure conservatism in the assessment of the effective dose for the entire production cycle by no more than 15% and 25% for dosimeters located at the chest level and abdominal level, respectively.
About the Authors
V. Yu. Golikov
Saint Petersburg Research Institute of Radiation Hygiene after Professor P.V. Ramzaev, Federal Service for Surveillance of Consumer Rights Protection and Human Wellbeing
Russian Federation
Russian Federation
Vladislav Yu. Golikov - Senior Researcher of the Medical Protection Laboratory, Saint Petersburg Research Institute of Radiation Hygiene after Professor P.V. Ramzaev, Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing.
Mira Str., 8, Saint Petersburg, 197101
S. Yu. Bazhin
Saint Petersburg Research Institute of Radiation Hygiene after Professor P.V. Ramzaev, Federal Service for Surveillance of Consumer Rights Protection and Human Wellbeing
Russian Federation
Russian Federation
Stepan Yu. Bazhin - Head of the Laboratory of Radiation Control, Senior Researcher, Saint Petersburg Research Institute of Radiation Hygiene after Professor P.V. Ramzaev, Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing.
Saint Petersburg
E. N. Shleenkova
Saint Petersburg Research Institute of Radiation Hygiene after Professor P.V. Ramzaev, Federal Service for Surveillance of Consumer Rights Protection and Human Wellbeing
Russian Federation
Russian Federation
Ekaterina N. Shleenkova - Junior Researcher of the Laboratory of Radiation Control, Saint Petersburg Research Institute of Radiation Hygiene after Professor P.V. Ramzaev, Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing.
Saint Petersburg
V. Yu. Bogatyreva
Saint Petersburg Research Institute of Radiation Hygiene after Professor P.V. Ramzaev, Federal Service for Surveillance of Consumer Rights Protection and Human Wellbeing
Russian Federation
Russian Federation
Victoria Yu. Bogatyreva - Junior Researcher of the Laboratory of Radiation Control, Saint Petersburg Research Institute of Radiation Hygiene after Professor P.V. Ramzaev, Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing.
Saint Petersburg
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Review
For citations:
Golikov V.Yu., Bazhin S.Yu., Shleenkova E.N., Bogatyreva V.Yu. Model of occupational exposure of workers performing inspection of welded joints. Radiatsionnaya Gygiena = Radiation Hygiene. 2024;17(3):125-132. (In Russ.) https://doi.org/10.21514/1998-426X-2024-17-3-125-132
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