What measure is employed to prevent gas piping from collecting liquid?

• A. Providing excess pressure
• B. Ensuring proper slope
• C. Installing a filter
• D. Using lighter pipes

Answer: (B)

Ensuring proper slope in gas piping systems is essential to prevent the accumulation of liquid, such as condensate, which can cause issues in gas flow and system performance. When gas flows through piping, especially in underground and low-lying areas, it can sometimes carry moisture or other liquid byproducts. By installing gas pipes with a slight slope, any liquid that may form or collect can naturally drain away from low points in the system toward designated drainage points or traps.

This preventive measure not only maintains the efficiency of the gas flow but also reduces the risk of blockages and maintains safe operating conditions. Other choices, while potentially relevant in different contexts, do not specifically address the effective management of liquid accumulation in gas piping systems.