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Health Risks From Exposure to Metal-Working Fluids in Machining and Grinding Operations

Li K., Aghazadeh F., Hatipkarasulu S., Ray T. G.

International Journal of Occupational Safety and Ergonomics

2003

Vol. 9, No. 1

75--95

Metal-working fluids (MWFs) are used in machining and grinding operations to cool the tool and work, reduce the friction between the tool and work, improve the surface integrity of the work piece, and increase tool life and productivity. Health problems have been reported among workers exposed to MWFs, including incidences of respiratory, digestive and skin cancers, and increased rates of cough and phlegm. This paper reviews and discusses issues concerning health risks from exposure to MWFs in machining and grinding operations, the various factors that influence the degree of exposure, and control methods to reduce exposure to metal-working fluids.

Interaction of Physical and Mental Work

Singh S., Aghazadeh F., Ray T. G.

International Journal of Occupational Safety and Ergonomics

2002

Vol. 8, No. 4

451--463

The objective of the research was to determine the effect of mental load on the physical capacity of an individual. An experiment involving 9 combinations of lifting tasks, 1 lowering task, and 3 treadmill tasks was conducted. Heart rate was measured and maximum acceptable weight of lift was determined using the psychophysical method. A simple multiplication task was used as the mental load. The output variables were determined with and without the mental task. The results indicate that the individual’s physical capacity decreased with the mental task while lifting from floor to knuckle and shoulder to reach lifting heights.