California ICC UST Service Technician Practice Exam

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Prepare for the California ICC UST Service Technician Exam. Study with flashcards and multiple-choice questions. Hints and explanations included for each question. Ace your exam!

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Which of the following is NOT considered an overfill protection system?

Spill buckets
Overflow alarms
Automatic shut-off valves
Terminal shut-off systems

The correct answer is: Spill buckets

Spill buckets are not considered an overfill protection system because they are primarily designed to contain liquid that may spill during the refueling process rather than preventing overfilling of the tank itself. Overfill protection systems are specifically intended to prevent the tank from being filled beyond its capacity, which is critical for safety and environmental protection. On the other hand, overflow alarms, automatic shut-off valves, and terminal shut-off systems are all actively involved in preventing overfills. Overflow alarms alert personnel when tank levels are nearing their maximum capacity, allowing timely actions to be taken. Automatic shut-off valves provide a mechanized approach to stopping the flow of fuel when the predetermined level is reached. Terminal shut-off systems can involve either manual or automated mechanisms to stop fueling operations when a certain level is detected, thereby mitigating the risk of overfilling. Together, these systems contribute to a comprehensive safety protocol designed to manage and prevent the risk of overfilling fuel tanks.