What is the minimum size of a gas and oil interceptor?

What is the minimum size of a gas and oil interceptor?

• A. 6 Cubic Feet
• B. 4 Cubic Feet
• C. 8 Cubic Feet
• D. 10 Cubic Feet

Answer: (A)

Gas and oil interceptors work by giving enough space for the wastewater to slow down so oil and petroleum products can rise to the top and be kept from the sewer. The size is defined by the required retention volume, expressed in cubic feet. The code sets the minimum interceptor capacity at 6 cubic feet, which provides enough detention time for effective separation. This is about 45 gallons of volume, a practical minimum to trap oil before discharge. A smaller unit, like 4 cubic feet, wouldn’t reliably allow separation at typical flows, while larger sizes are chosen only if the flow demands it. So the smallest acceptable size is 6 cubic feet.

Gas and oil interceptors work by giving enough space for the wastewater to slow down so oil and petroleum products can rise to the top and be kept from the sewer. The size is defined by the required retention volume, expressed in cubic feet. The code sets the minimum interceptor capacity at 6 cubic feet, which provides enough detention time for effective separation. This is about 45 gallons of volume, a practical minimum to trap oil before discharge. A smaller unit, like 4 cubic feet, wouldn’t reliably allow separation at typical flows, while larger sizes are chosen only if the flow demands it. So the smallest acceptable size is 6 cubic feet.