Annals of Occupational Hygiene Advance Access originally published online on July 15, 2009
Annals of Occupational Hygiene 2009 53(7):669-675; doi:10.1093/annhyg/mep047
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Beryllium Decontamination with Different Solvents on Different Structures
1 Department of Environmental and Occupational Health, Faculty of Medicine, Université de Montréal, Pavillon Marguerite-d'Youville 2375, Chemin de la Côte-Ste-Catherine, Montréal, Québec H3T 1A8, Canada
2 Institut de recherche Robert-Sauvé en santé et en sécurité du travail, 505 ouest de Maisonneuve, Montréal, Québec H3A 3C2, Canada
3 Consultation en R&D et Expertise en SST, 3285 de Bercy, Laval, Québec H7E 1V7, Canada
* Author to whom correspondence should be addressed. Tel: +514-343-6134; fax: +514-343-2200; e-mail: andre.dufresne{at}umontreal.ca
The objective of the present work was to estimate the efficiency of moistened wipes in removing beryllium with different solutions including CitranoxTM, AlconoxTM, NaCl 5%, ResolveTM, and LedizolvTM on various types of surfaces such as unpainted metal, wood frames, painted metal, concrete, painted concrete, and PlexiglasTM from three different occupational settings. Of the three plants that were investigated, only surfaces in the aluminium smelter were decontaminated down to the clearance reference level of 0.2 µg 100 cm–2, with all the solvents used. In the machine tooling and milling department, the clearance level of 0.2 µg 100 cm–2 was reached after the three decontaminations, with all the solvents. In the machine plant for the military, aerospace, and telecommunications industries, the beryllium concentrations on the concrete wall, before decontamination with the high-pressure gun, were usually >3 µg 100 cm–2, and concentrations as high as 31 µg 100 cm–2 were measured. After the high-pressure cleanup, the beryllium concentrations were sometimes reduced by a factor of 10, but never reached the clearance level. Beryllium compounds that had adhered to most types of structures that we attempted to decontaminate were reduced to below the clearance reference value except on concrete floors. There did not seem to be any difference between the decontamination actions for all the solvents used in this study.
Keywords: AlconoxTM beryllium CitranoxTM Ghost WipeTM LedizolvTM NaCl 5% ResolveTM surfaces
Received February 28, 2009; in final form June 24, 2009