Which technique involves using a protective layer to prevent a spill from spreading?

• A. Dam and dike
• B. Blanketing
• C. Confining
• D. Vapor suppression

Answer: (B)

The technique that involves using a protective layer to prevent a spill from spreading is known as blanketing. This method typically employs materials or substances that will cover the spilled material, thereby creating a barrier that inhibits further diffusion or evaporation. By applying a layer that fills or covers the spill, this technique not only reduces the potential for environmental contamination but also minimizes health risks associated with harmful vapors or liquids escaping into the surrounding area.

Blanketing is particularly effective in situations where volatile substances are involved, as it helps manage both the immediate dangers of the spill and its longer-term implications. This method is essential in hazardous materials management, as controlling the spread of a spill is critical in limiting exposure to both personnel and the surrounding community.