Man Entry Walk Thru is a widely used approach for visual inspections in sewers that are higher than 1.5 meters. Obstacles, such as large pieces of concrete, boulders, or other oversized foreign objects can be circumnavigated by trained technicians equipped with hand tools.
Man Entry Walk Thrus involve a great deal of equipment and preparation, including:
- Flow diversions
- The use of gas detectors
- Self-contained breathing apparatus
- Safety harnesses
- Retrieval systems
- Confined space entry
- Rescue procedures
All of these are critical parts of any man entry sewer inspection procedure, often making it the last resort. However, a Man Entry Walk Thru does allow for a wide variety of techniques at an affordable cost.