What are the venting rules for an oil interceptor?

The correct answer aligns with standard practices for venting oil interceptors, which are designed to manage and reduce the risk of odors and ensure the proper flow and function of the interceptor system. Extending vents to open air and terminating them at least 12 inches above the ground level allows for adequate dispersion of any harmful gases or odors that may arise during the operation of the interceptor. This height requirement is important for safety and compliance with local building codes.

By venting to open air, the gases can dissipate, minimizing the potential for inhalation hazards and environmental contamination. Moreover, proper venting helps to prevent back-pressure within the piping system, ensuring that the interceptor functions optimally without risks of blockages or malfunctions.

The other options do not reflect proper venting practices. Sealing vents completely would trap gases and could create an unsafe environment, while vents placed at ground level or directed toward windows would not effectively disperse odors and could lead to issues with air quality and system function.