What is the purpose of decontamination in radiological safety?

• A. Increasing shielding to reduce dose
• B. Replacing contaminated equipment with non-radioactive alternatives
• C. Relocating the facility to a different site
• D. Removal of radioactive contamination from surfaces or people to reduce dose and limit spread

Answer: (D)

Decontamination aims to remove radioactive contaminants from surfaces, equipment, and skin so that the radiation dose to people is lowered and the potential spread of contamination is prevented. By physically or chemically removing the radioactive material, you reduce both external exposure and the chance of internal exposure from contact, inhalation, or ingestion. This is different from simply increasing shielding, which lowers dose without removing the contamination itself. It’s also not about replacing equipment or relocating a facility, which can lower future exposure in other ways but do not directly remove existing contamination. Effective decontamination involves appropriate cleaning methods, skin washing when necessary, and proper disposal of contaminated waste to keep people and the environment safer.