Case study of occupational mercury exposure during decontamination of turnaround in refinery plant.

Case study of occupational mercury exposure during decontamination of turnaround in refinery plant. Int J Occup Environ Health. 2018 Jan 15;:1-6 Authors: Muadchim M, Phanprasit W, Robson MG, Sujirarat D, Detchaipitak R Abstract Decontamination during turnaround (TA) can lead to high exposure to toxic chemicals among workers. The decontamination process in refinery plants usually comprises two types, i.e. steam and chemical decontamination. No matter the method used, concentrations of toxic chemicals must be measured using the direct reading instrument at the end of each decontamination cycle, which maybe repeated several times until the readings are in acceptable level. To evaluate mercury exposure of decontamination workers during decontamination procedure in comprehensive turnaround of a refinery plant. Thirty personal and 16 area air samples were collected using passive dosimeters and absorbent tubes, respectively, during 8 days of the decontamination in comprehensive turnaround. All samples were analyzed using inductively coupled plasma mass spectrometry (ICP-MS). Good practices and standard procedures for air sampling and analysis were performed. The TWA concentrations were calculated and compared between steam and chemical decontamination workers. All area samples were well below TLV (ND - 0.0016 mg/m3) while 5 of 14 samples collected at the steam team and 1 of 16 samples taken from the chemical team exceeded the TLV. The geo...
Source: International Journal of Occupational and Environmental Health - Category: Environmental Health Tags: Int J Occup Environ Health Source Type: research