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Decontamination of Fire Fighters' Protective Clothing with Trichlorotrifluoroethane.
Workshop Proceedings: PCB By-Product Formation, Palo Alto, California, December 4-6, 1984 1985 Jul:1-12
The efficiency of a 1,1,2-trichloro-1,2,2-trifluoroethane (Freon-13) based dry cleaning machine to remove polychlorinated-biphenyls (1336363) (PCBs) from Nomex fabric protective clothing was evaluated in a laboratory study. Garments contaminated during a fire at an electrical transformer oil reclamation facility and garments contaminated in the laboratory with a known concentration of Aroclor- 1242 (53469219) were cleaned using a RADKLEEN Model 1550 Clothing Decontamination System. The ratio of the after cleaning to before cleaning PCB concentrations in terms of micrograms/gram (microg/g) of fabric was determined by extraction with toluene and analysis by gas chromatography with electron capture detection. Samples were taken from firefighters' turnout coats and bunker pants. Standard PCB samples were used for comparison. In the case of site contaminated garments, PCB concentration was reduced from 5.3 to 480 micrograms/gram to 1.1 to 25microg/g. In the case of laboratory contaminated garment, the PCB concentration prior to cleaning was 1.6x10(4) to 9.9x10(5)microg/g, and after laundering it was 5.4 to 230microg/g. No physical damage to the garments was observed after the tumble washing. The authors conclude that the study, although limited, indicated PCB contamination can be removed from firefighters' protective clothing.
Chromatographic-analysis; Firemen; Fire-resistant-materials; Protective-clothing; Materials-testing; Chemical-cleaning; Decontamination;
Workshop Proceedings: PCB By-Product Formation, Palo Alto, California, December 4-6, 1984
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Content source: National Institute for Occupational Safety and Health Education and Information Division