Under what condition may a vapor nozzle dispense more than 10 gpm?

The condition under which a vapor nozzle may dispense more than 10 gallons per minute (gpm) relates to specific regulations and standards within the vapor recovery systems. These systems are designed with limitations to prevent excessive vapor release, which can contribute to environmental issues and safety hazards.

The correct response emphasizes that there are no circumstances under which a vapor nozzle is allowed to dispense more than 10 gpm. This restriction aligns with safety protocols and design regulations intended to minimize emissions during the refueling process. Exceeding this limit could compromise the efficiency of the vapor recovery system, leading to increased vapor losses and potential regulatory violations.

Each of the other choices does not provide a valid condition for exceeding the 10 gpm threshold. For instance, while pump testing might suggest elevated flow rates, safety regulations impose strict guidelines that still cap flow rates under normal operational circumstances to prevent vapor emissions. Conditions relating to temperature or emergency scenarios typically do not offer exemptions to this operational cap, highlighting the importance of adhering to established standards regardless of situational factors. This ensures eco-friendly practices and compliance with environmental regulations.