A checklist for qualitative assessment of metalworking fluids.
Piacitelli-G; O'Brien-D; Sieber-W; Sheehan-M
American Industrial Hygiene Conference and Exposition, June 2-7, 2001, New Orleans, Louisiana. Fairfax, VA: American Industrial Hygiene Association, 2001 Jun; :61-62
Most OSHA health standards require that "initial monitoring" of worker exposures be conducted to determine the frequency of further exposure monitoring, to select appropriate respiratory protection, and to determine the need for engineering controls. In 1999, the OSHA Metalworking Fluids Standards Advisory Committee (MWF-SAC) recommended that an alternative approach to initial monitoring requirements be considered for the metalworking industry. The Committee recognized that some machining situations (such as low volume or well-ventilated operations) may not be expected to create exposures to metalworking fluids above applicable exposure limits. In these cases, it was felt that a qualitative assessment checklist could be utilized rather than air samples. This approach would particularly benefit small employers which lack industrial hygiene expertise and resources. Members from the MWF-SAC and NIOSH developed a checklist of qualitative information and observations thought to be useful for predicting the need for exposure monitoring. For validation, this checklist was sent to employers who had participated in a NIOSH study of MWF exposures in machine shops. Checklists were returned from 34 shops (a response rate of 43%) and analyzed to determine if there was a relationship between checklist responses and MWF concentrations measured previously by NIOSH. Linear regression was used to determine which checklist questions were most highly associated with MWF levels. Multi-variable models were then developed incorporating different variables which were significantly associated (p<0.05) with the compliance fraction (i.e., the percentage of sample values over the NIOSH REL of 0.5 mglrn3). The best model (R2=O.93) included factors for fluid management, housekeeping, ventilation, and work practices. These findings suggest that an appropriate checklist could be used as objective evidence that a quantitative exposure assessment may not be necessary.
Fluid-mechanics; Hazards; Metalworking-fluids; Machine-operators; Machine-tools; Lubricants; Exposure-levels; Respiratory-irritants; Respiration; Respirable-dust; Aerosols; Milling-industry; Oils; Particulate-dust; Particulates; Aerosols; Aerosol-particles; Monitoring-systems; Ventilation
American Industrial Hygiene Conference and Exposition, June 2-7, 2001, New Orleans, Louisiana