Sample interview questions: Are you knowledgeable about gas system leak detection methods and equipment?
Sample answer:
Gas System Leak Detection Methods and Equipment
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Leak Test Gauge: Measures the pressure in gas systems to detect leaks.
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Electronic Leak Detector: A handheld device that uses a sensor to pinpoint leaks by detecting trace amounts of gas.
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Ultrasonic Leak Detector: Emits high-frequency sound waves that create vibrations in the presence of leaks, producing a detectable sound.
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Bubble Solution: Applied to fittings and joints; bubbles indicate the presence of a leak.
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Thermal Imaging: Uses an infrared camera to detect temperature differences caused by escaping gas.
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Smoke Test: Introduces smoke into the gas system to visualize leaks through smoke patterns.
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Source: https://hireabo.com/job/12_0_12/Gasfitter