Types of contamination include fixed, loose, and what else?

Types of contamination include fixed, loose, and what else?

• A. Internal, External, Mixed
• B. Alpha, Beta, Gamma
• C. Surface, Airborne, Waterborne
• D. Fixed, Loose, and Discrete radioactive particle

Answer: (D)

In contamination control, there are three forms to recognize: fixed contamination, loose contamination, and discrete radioactive particles. Fixed contamination is stuck to a surface and not easily removed by wiping, so it stays in place unless thorough decontamination is done and the surface is properly cleaned. Loose contamination isn’t bound to a surface, so it can be transferred more readily by touch, clothing, or surfaces it contacts, making prompt cleaning essential to prevent spread. A discrete radioactive particle is an individual particle that is not spread as a film on surfaces but exists as a separate particle that could be inhaled, ingested, or become a local contamination hotspot if disturbed. This form requires strict controls to prevent resuspension and inhalation, such as careful handling, containment, and targeted cleanup. Other options refer to types of radiation or routes of exposure rather than this specific classification of contamination, so they don’t fit as the standard third form.

In contamination control, there are three forms to recognize: fixed contamination, loose contamination, and discrete radioactive particles. Fixed contamination is stuck to a surface and not easily removed by wiping, so it stays in place unless thorough decontamination is done and the surface is properly cleaned. Loose contamination isn’t bound to a surface, so it can be transferred more readily by touch, clothing, or surfaces it contacts, making prompt cleaning essential to prevent spread. A discrete radioactive particle is an individual particle that is not spread as a film on surfaces but exists as a separate particle that could be inhaled, ingested, or become a local contamination hotspot if disturbed. This form requires strict controls to prevent resuspension and inhalation, such as careful handling, containment, and targeted cleanup.

Other options refer to types of radiation or routes of exposure rather than this specific classification of contamination, so they don’t fit as the standard third form.