If R134A accidentally touches a refrigerant engineer's skin, what first aid should be applied?

• A. Apply oil to dilute
• B. Promptly flush skin with water until all chemical is removed
• C. Rinse with hot water
• D. Brush off and wash with soap

Answer: (B)

When refrigerant touches skin, the priority is to remove the chemical quickly and minimize cold injury from rapid evaporation. The best first aid is to flush the affected area with a steady stream of clean running water for at least 15 minutes or until the chemical is washed away. This approach both removes the refrigerant and cools the skin to reduce tissue damage.

Avoid applying oil, which can trap the refrigerant against the skin and hinder removal. Do not use hot water, as heat can worsen tissue injury. Brushing off and washing with soap may help after thorough rinsing, but the immediate priority is a thorough water rinse to quickly eliminate the chemical. If irritation or signs of frostbite develop, seek medical attention promptly.