"External and Internal Hazard indices in fly ash samples from Al-Hartha thermal power station "

Abstract

"In the presented study, internal and external hazard indices for fly ash's samples were measured from Al-Hartha thermal power station in the south part of Al-Basra province in Iraq. Eight samples were taken from different places inside the station. The samples were collected at year 2018 and compared with a previous study at 2014.

The range of total values (highest value and lowest value) related to the internal and external hazard indices was Hin = 1.374 - 0.612 and Hex = 1.003-0.529, respectively.

Therefore, it is noted that some Hin and Hex values are considered higher than the permissible limits set by international organizations, especially the S4 sample, taking into account that the values of radiation risk factors should be less than one (≤1) to be negligible. Therefore, the results of the measurements showed that the values of hazard indices related to some samples of fly ash that were taken from Al-Hartha thermal electric power station in Al- Basra are higher than the internationally permissible limits."