Sample interview questions: Are you familiar with using advanced technologies, such as sonar or ground-penetrating radar, for drain inspections? If so, can you explain the process?
Sample answer:
Yes, I am proficient in utilizing advanced technologies such as sonar and ground-penetrating radar (GPR) for thorough drain inspections.
Sonar Inspection:
Sonar technology employs sound waves to create a detailed image of the interior of drains. I first introduce a specialized sonar probe equipped with an acoustic transducer into the drain. The probe emits sound waves that bounce off the drain walls and return to the probe. These echoes are then analyzed to generate a highly accurate map of the drain, revealing any blockages, cracks, or other anomalies.
Ground-Penetrating Radar (GPR) Inspection:
GPR utilizes electromagnetic waves to penetrate the ground or structures, allowing me to assess buried drains and detect potential issues. I roll a GPR antenna along the ground above the suspected drain location. The antenna emits high-frequency pulses that penetrate the soil or pavement. The reflected signals are recorded and pr… Read full answer
Source: https://hireabo.com/job/12_0_10/Drain%20Technician