Age-dependent doses to members of the public from intake of                radionuclides: Part 4 Inhalation dose coefficients

Icrp,

doi:10.1016/s0146-6453(00)80008-1

Cited by 410 publications

(5 citation statements)

References 302 publications

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“…Specifically, for newborn to 15 year old PRC phantoms, the average ratios of estimated e(τ) values to earlier values are approximately 0.78, 0.67, 0.74, 0.69 and 0.74 for both intake routes. This decrease in estimated e(τ) can be attributed to two factors: (i) lower equivalent dose for the thyroid due to its higher mass (including blood mass) in PRC phantoms than in stylized phantoms [14,16] and (ii) the lower thyroid w T value (0.04) used in our calculations than (0.05) used in the ICRP publication values [4,13].…”

Section: Age-specific Dose Coefficientsmentioning

confidence: 88%

“…Furthermore, the dose coefficients decrease with age for both intake cases. Compared to newborns, the inhalation e(τ) values for 1, Figure 7 illustrates a comparison between the estimated e(τ) values for PRC phantoms and the available reference values from previous ICRP publications [13,14]. It is observed that the estimated e(τ) values for PRC phantoms are slightly lower than previous reference values.…”

Section: Age-specific Dose Coefficientsmentioning

confidence: 89%

“…The reference SAF values are derived from age-specific Oak Ridge National Laboratory stylized mathematical phantoms [10][11][12]. Based on these ã(r S ,τ) and SAF values, reference 131 I committed tissue equivalent doses, H T (τ), and dose coefficients, e(τ), have been provided in various International Commission of Radiation Protection (ICRP) publications [13,14].…”

Section: Introductionmentioning

confidence: 99%

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¹³¹I dose coefficients for a reference population using age-specific models

Singh,

Patni,

Roy

et al. 2023

J. Radiol. Prot.

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Age-specific dose coefficients are required to assess internal exposure to the general public. This study utilizes reference age-specific biokinetic models of iodine to estimate total numbers of nuclear disintegrations ã(rS,τ) occurring in source regions (rS) during the commitment time (τ). Age-specific S values are estimated for 35 target regions due to 131I present in 22 rS using 10 paediatric reference computational (PRC) phantoms (representing 5 ages for both sexes) data recently published by International Commission of Radiation Protection (ICRP). Monte Carlo transport simulations are performed in FLUKA code. The estimated ã(rS,τ) and S values are then used to compute committed tissue equivalent dose HT(τ) for 27 radiosensitive tissues and dose coefficients e(τ) for all 5 ages due to inhalation and ingestion of 131I. The derived ã(rS,τ) values in the thyroid source are observed to be increasing with age due to increased retention of iodine in the thyroid. S values are found to be decreasing with age mainly due to increase in target masses. Generally, HT(τ) values are observed to decrease with age, indicating the predominant behaviour of S values over ã(rS,τ) . On an average, ingestion dose coefficients are 63% higher than inhalation for all ages. The maximum contribution to dose coefficients is from thyroid, accounting for 96% in the case of new-born and 98-99% for all other ages. Furthermore, the estimated e(τ) values for the reference public are observed to be lower than previously published values by the ICRP. The estimated S, HT(τ), and e(τ) values can be used to improve the estimation of internal doses to organs/whole body for members of the public in cases of 131I exposure. The estimated dose coefficients can also be interpolated for other ages to accurately evaluate the doses received by the general public during 131I therapy or during a radiological emergency.

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Section: Age-specific Dose Coefficientsmentioning

confidence: 88%

Section: Age-specific Dose Coefficientsmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

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¹³¹I dose coefficients for a reference population using age-specific models

Singh,

Patni,

Roy

et al. 2023

J. Radiol. Prot.

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“…Therefore, a dose assessment model has been applied to estimate the radiological exposure of the public to a nuclear accident [22]. Radionuclides released to the environment is a potential risk to humans and the environment; therefore, major efforts have been concentrated on developing an internationally acceptable system [23][24][25].…”

Section: Dose Assessmentmentioning

confidence: 99%

A Study on Radiological Hazard Assessment for Jordan Research and Training Reactor

2023

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Numerical simulations of atmospheric dispersion and dose assessment were performed for the Jordan Research and Training Reactor (JRTR) to evaluate its radiological effects on surrounding population and the environment. A three-dimensional atmospheric dispersion model was applied to investigate the behavior of the radionuclides released into the air, and a dose assessment model was used to estimate the radiological impact on the population residing in nearby cities around the JRTR. Considering full core meltdown an accidental scenario, most of the source term was assumed to be released from the JRTR. Simulations were performed to calculate the air and deposition concentrations of radioactive materials for July 2013 and January 2014. The monthly averaged values of concentrations, depositions, and dose rates were analyzed to identify the most harmful effects in each month. The results showed that relatively harmful effects occurred in January 2014, and the total annual dose rate was estimated to be approximately 1 mSv outside the 10 km radius from JRTR. However, the impact of a nuclear accident is not as severe as it might seem, as the affected area is not highly populated, and appropriate protective measures can significantly reduce the radiation exposure. This study provides useful information for emergency preparedness and response planning to mitigate the radiological consequences of a nuclear accident at the JRTR.

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“…Notes: absorption types: F = fast, M = moderate, S = slow. For 90 Sr, the type M corresponding to fuel fragments or when unspecified forms is recommended for the general public and for workers even if there is no recommendation in ref . For Pu isotopes, an S-type solubility has been considered as a result of the Pu oxide forms released during the Chernobyl accident.…”

Section: Introductionmentioning

confidence: 99%

Europe-Wide Atmospheric Radionuclide Dispersion by Unprecedented Wildfires in the Chernobyl Exclusion Zone, April 2020

Romanenko

Saunier

Kirieiev

et al. 2021

Environ. Sci. Technol.

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From early April 2020, wildfires raged in the highly contaminated areas around the Chernobyl nuclear power plant (CNPP), Ukraine. For about 4 weeks, the fires spread around and into the Chernobyl exclusion zone (CEZ) and came within a few kilometers of both the CNPP and radioactive waste storage facilities. Wildfires occurred on several occasions throughout the month of April. They were extinguished, but weather conditions and the spread of fires by airborne embers and smoldering fires led to new fires starting at different locations of the CEZ. The forest fires were only completely under control at the beginning of May, thanks to the tireless and incessant work of the firefighters and a period of sustained precipitation. In total, 0.7−1.2 TBq 137 Cs were released into the atmosphere. Smoke plumes partly spread south and west and contributed to the detection of airborne 137 Cs over the Ukrainian territory and as far away as Western Europe. The increase in airborne 137 Cs ranged from several hundred μBq•m −3 in northern Ukraine to trace levels of a few μBq•m −3 or even within the usual background level in other European countries. Dispersion modeling determined the plume arrival time and was helpful in the assessment of the possible increase in airborne 137 Cs concentrations in Europe. Detections of airborne 90 Sr (emission estimate 345−612 GBq) and Pu (up to 75 GBq, mostly 241 Pu) were reported from the CEZ. Americium-241 represented only 1.4% of the total source term corresponding to the studied anthropogenic radionuclides but would have contributed up to 80% of the inhalation dose.

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Age-dependent doses to members of the public from intake of radionuclides: Part 4 Inhalation dose coefficients

Cited by 410 publications

References 302 publications

¹³¹I dose coefficients for a reference population using age-specific models

¹³¹I dose coefficients for a reference population using age-specific models

A Study on Radiological Hazard Assessment for Jordan Research and Training Reactor

Europe-Wide Atmospheric Radionuclide Dispersion by Unprecedented Wildfires in the Chernobyl Exclusion Zone, April 2020

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Age-dependent doses to members of the public from intake of radionuclides: Part 4 Inhalation dose coefficients

Cited by 410 publications

References 302 publications

131I dose coefficients for a reference population using age-specific models

131I dose coefficients for a reference population using age-specific models

A Study on Radiological Hazard Assessment for Jordan Research and Training Reactor

Europe-Wide Atmospheric Radionuclide Dispersion by Unprecedented Wildfires in the Chernobyl Exclusion Zone, April 2020

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¹³¹I dose coefficients for a reference population using age-specific models

¹³¹I dose coefficients for a reference population using age-specific models