Contact dermatitis from dielectric fluids in electrodischarge machining

Area of Science:

• Occupational Dermatology
• Industrial Hygiene
• Materials Science

Background:

• Electrodischarge machining (EDM) is a precision metal machining process widely used in mold making and precision engineering.
• Dielectric fluids used in EDM contain aromatic, paraffinic, or naphthenic hydrocarbons, known skin irritants.
• Previous reports have not documented irritant contact dermatitis specifically linked to EDM dielectric fluids.

Purpose of the Study:

• To report a novel outbreak of irritant contact dermatitis in the aerospace industry.
• To identify the causative agent and process associated with the dermatitis outbreak.
• To highlight the potential for increased prevalence of this occupational skin condition.

Main Methods:

• Investigated an outbreak of skin condition among 20 workers in the aerospace industry.
• Identified electrodischarge machining (EDM) and its associated dielectric fluid as the source of exposure.
• Clinical assessment of workers to diagnose irritant contact dermatitis.

Main Results:

• 20 workers performing EDM developed irritant contact dermatitis.
• The dermatitis was directly attributed to exposure to the dielectric fluid used in the EDM process.
• This represents the first reported instance of irritant contact dermatitis from EDM dielectric fluid.

Conclusions:

• Irritant contact dermatitis from EDM dielectric fluid is a newly identified occupational hazard.
• The prevalence of EDM-related dermatitis is likely to increase as EDM technology becomes more widespread.
• Preventive measures, including personal hygiene and health education, are effective in preventing this condition.