NEBOSH Practice Test

Which feature is essential in the design of a tank bund?

1. Having multiple entry points

2. An impermeable base

3. Incorporating open drainage systems

4. Placement close to traffic routes

The correct answer is: An impermeable base

In the context of tank bund design, having an impermeable base is essential. The primary function of a bund is to contain any potential spills or leaks from the tank, thereby preventing hazardous materials from escaping into the surrounding environment. An impermeable base ensures that liquids cannot pass through the foundation of the bund, which is critical for effectively containing any spills and protecting soil and groundwater from contamination. The impermeable nature of the bund's base minimizes the risk of leakage, making it a vital safety feature. This characteristic also contributes to regulatory compliance, ensuring that facilities manage hazardous materials responsibly and within legal frameworks, enhancing overall environmental protection. The other options do not address the fundamental purpose of a bund as directly as an impermeable base does. Multiple entry points may increase convenience but could undermine containment if they allow for potential leaks. Open drainage systems can pose a risk of allowing contaminants to flow away from the bund area, which is contrary to its intended function. While proximity to traffic routes can benefit access, it poses challenges relating to safety and increases the likelihood of accidents that may lead to spills. Hence, the focus on an impermeable base is essential for effective risk management in storage tank areas.