What is a vent gas recovery option and its effect on hazard?

• A. It increases the amount released to the atmosphere.
• B. Reclaiming vented gas reduces the amount released to atmosphere and potentially reduces flammable/explosive hazard.
• C. It has no effect on hazard.
• D. It only affects odor.

Answer: (B)

Vent gas recovery is about catching gases that would otherwise be released from a process vent and routing them to a system where they can be treated, burned, or reused. The key safety and environmental benefit is that it lowers the amount of flammable vapor entering the surrounding air. With fewer vapors drifting into the work areas or ambient environment, there’s less chance of forming a combustible mixture and triggering a fire or explosion, which directly reduces the hazard.

In addition, recovering vent gas can also enable energy or product recovery, making the process more efficient and compliant with environmental rules. While there may be secondary benefits like reduced odors, the main point is the reduction of flammable vapor releases and the associated explosion risk.