A Review of Radon Equilibrium Factors in Underground Mines, Caves, and Thermal Spas

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Publication Date

9-1-2020

Publication Title

Health Physics

Volume Number

119

Issue Number

3

Abstract

Abstract Radon equilibrium factor Feq is an important factor in radon progeny dose assessment. A review of published measurements of Feq shows a range of values from 0.1 to 1.0 reported in studies from more than 26 countries measured in 173 underground mines, and 136 show caves, tourist mines, and thermal spas. The average values of F eq are 0.38 in underground mines and 0.39 for show caves, tourist mines, and thermal spas. The wide range of Feq in those special workplaces suggests that location-, environment-, and operation-specific values are more appropriate than a recommended average value in the calculation of lung bronchial dose. This is especially important in mines or other typically high radon exposure locations because F eq can be used for recording an individual’s occupational radon exposure or dose.

Document Type

Article

Digital Object Identifier (DOI)

https://doi.org/10.1097/HP.0000000000001214

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