Which of the following is an example of defensive leak control?

• A. Using absorbent materials
• B. Applying a dome clamp
• C. Implementing evacuation procedures
• D. Reducing the area of operations

Answer: (B)

Defensive leak control refers to techniques aimed at mitigating the impact of a hazardous material release without directly intervening in the leak itself. Applying a dome clamp is considered a form of defensive leak control because it is a method used to contain or stop a leak from a pressurized container or tank by clamping down around the leaking area, thus preventing the escape of hazardous materials into the environment.

This technique is typically employed after assessing the situation to ensure that it is safe to approach the leak and thus serves to protect first responders, the public, and the environment. By using a dome clamp, responders can effectively minimize the spread of contaminants and reduce the risk of exposure while maintaining a safe operational zone around the hazardous material incident.

The other choices, while they serve important functions in hazardous materials response, do not fall under the specific category of defensive leak control. Using absorbent materials is more about cleanup and remediation rather than containment; implementing evacuation procedures focuses on safety for individuals in the vicinity; and reducing the area of operations pertains to managing the scope of response rather than directly addressing the leak itself.