What spray pattern is recommended for mass decontamination water nozzles?

The recommended spray pattern for mass decontamination water nozzles is the wide-angle fog pattern. This specific spray pattern is advantageous as it provides a large surface area coverage, allowing for effective and efficient decontamination of multiple individuals or surfaces simultaneously. The fine mist created by the fog pattern helps in dispersing the decontamination solution evenly, which enhances the cleaning process by maximizing contact with contaminants on various surfaces.

Additionally, the wide-angle fog pattern minimizes the force of water impact, which is beneficial when the goal is to safely decontaminate sensitive skin or materials without causing injury or damage. It is particularly useful in situations where a gentle application is critical for safety while effectively removing hazardous substances.

In contrast, other spray patterns like the narrow jet or solid stream would concentrate the water in a smaller, more forceful area, which is not ideal for mass decontamination scenarios where a broader, gentler application is preferred. The broken stream pattern, while potentially useful in other contexts, does not provide the necessary coverage and consistency that the wide-angle fog pattern best ensures during large-scale decontamination efforts.