Monitoring intercomparisons improved dosimetry performance in provincial health institutions, indicating enhanced occupational health standards.
To improve monitoring capabilities, China CDC organized individual monitoring intercomparisons, which provincial health institutions participated in from 2022 to 2024. The irradiation schemes and evaluation criteria were designed in accordance with GBZ 207-2016, "Testing criteria of personnel dosimetry performance for external exposure." The Type II (photon) test specified in the standard was selected as the intercomparison type, with H p (10) as the target quantity. Each institution submitted 21 dosimeters for participation in the intercomparison exercises. Irradiation schemes with various radiation quality and incident angles were randomly assigned to each participant. Out of 580 Pi values, 82.6% (479) were classified as excellent, and 96.9% (562) met the qualification criteria. Four institutions reported 18 unqualified Pi values. These demonstrate the reliable performance of the dosimetry systems. These intercomparisons helped participants identify system deviations and enabled radiation health administrative departments to grasp the capabilities of each institution, thus strengthening the protection of the occupational health of radiological workers.
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Gao et al. (2025) studied this question.
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