UST Service Technician Practice Test

What is the purpose of a Stage I vapor recovery system?

To capture liquid spills To exchange gasoline vapors To prevent overflows To filter fuel

Correct Answer:

To exchange gasoline vapors

Explanation:

The primary purpose of a Stage I vapor recovery system is to capture gasoline vapors that are emitted during the refueling process of underground storage tanks. When fuel is transferred from tanker trucks to these storage tanks at service stations, vapor can escape into the atmosphere. The Stage I vapor recovery system is designed to collect these vapors and return them to the tanker truck rather than allowing them to vent into the air. This process helps reduce air pollution and volatile organic compounds (VOCs), which are harmful to both human health and the environment. By effectively capturing and managing these gasoline vapors, the system plays a crucial role in maintaining compliance with environmental regulations and protecting air quality.

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