In a radiological attack, what system should be used to prevent or control the topside radiation hazards from fallout?

In a radiological attack, what system should be used to prevent or control the topside radiation hazards from fallout?

• A. Countermeasure Washdown
• B. Plan of Evacuation
• C. Decontamination Shower
• D. Personal Protective Equipment

Answer: (A)

The main idea is to remove radioactive fallout from exterior surfaces so it doesn’t pose ongoing exposure or get spread inside. A countermeasure washdown provides a formal, repeatable process to rinse and scrub topside decks, equipment, and fittings with approved detergents, then contain the runoff. This directly reduces surface contamination and lowers the chance of resuspension by wind or foot traffic, which is essential for keeping radiation levels and dose rates under control while operations continue on the topside. Plan of evacuation focuses on moving people away from danger and doesn’t address decontaminating surfaces. A decontamination shower is for treating individuals to remove contamination after exposure, not for cleaning large exterior areas. Personal protective equipment helps protect personnel but doesn’t remove contamination from surfaces or prevent it from still being present on the topside.

The main idea is to remove radioactive fallout from exterior surfaces so it doesn’t pose ongoing exposure or get spread inside. A countermeasure washdown provides a formal, repeatable process to rinse and scrub topside decks, equipment, and fittings with approved detergents, then contain the runoff. This directly reduces surface contamination and lowers the chance of resuspension by wind or foot traffic, which is essential for keeping radiation levels and dose rates under control while operations continue on the topside.

Plan of evacuation focuses on moving people away from danger and doesn’t address decontaminating surfaces. A decontamination shower is for treating individuals to remove contamination after exposure, not for cleaning large exterior areas. Personal protective equipment helps protect personnel but doesn’t remove contamination from surfaces or prevent it from still being present on the topside.