California ICC UST Service Technician Practice Exam

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According to PEI RP 300, what can be used to detect vapor leaks in a vapor recovery system?

  1. Electronic sensors

  2. Combustible gas

  3. Infrared cameras

  4. Pressure gauges

The correct answer is: Combustible gas

Detecting vapor leaks in a vapor recovery system is crucial for maintaining environmental safety and compliance with regulations. According to PEI RP 300, one method for leak detection involves the use of combustible gas detectors. These devices are designed to sense the presence of flammable vapors that may escape from a vapor recovery system, alerting technicians to potential leaks before they can pose safety risks or contribute to air pollution. Combustible gas detectors work by identifying the presence and concentration of hydrocarbon vapors. When there is a leak, the concentration of these gases will increase, and the detector will signal this change. This technology is vital for ensuring the integrity of vapor recovery systems, which are responsible for capturing vapors during fuel transfer to prevent them from entering the atmosphere. While electronic sensors, infrared cameras, and pressure gauges are also tools that might be used in various contexts of leak detection and system monitoring, they do not specifically focus on the detection of combustible vapors in vapor recovery systems as effectively as combustible gas detectors do. Each tool serves a different purpose and can provide valuable information, but in the context of PEI RP 300 guidelines for detecting vapor leaks, combustible gas detectors are specifically highlighted for their capability to identify flammable vapor leaks effectively.