With rapid urbanization and aging infrastructure, pipeline maintenance is becoming increasingly complex. Traditional manual inspection methods are inefficient, costly, and pose safety hazards. The emergence of plumbing video inspection cameras has enabled "visualized, non-destructive, and intelligent" internal pipeline inspection.
Whether for residential drainage, commercial facilities, or municipal sewer systems, this CCTV Pipeline Inspection System can accurately capture every detail within the pipes, providing powerful data support for maintenance and decision-making.
This article will detail the complete process of using sewage pipeline inspection cameras, from initial preparation to post-inspection analysis, giving you a comprehensive understanding of the application value and key operational points of this technology.
I. Pre-Inspection Preparation
Adequate preparation before any pipeline inspection is crucial for ensuring smooth operation. This not only improves inspection accuracy but also effectively extends the lifespan of the equipment.
1.1 Identifying Pipeline Access Points (Inspection Ports/Manholes)
The first step is to determine the camera's entry point.
For drainage systems in residential or commercial buildings, the main sewage pipe is typically accessed through a clean-out.
For municipal or industrial wastewater pipes, the pipe is lowered vertically through a manhole or a dedicated manhole.
Before entry, should check the stability and safety of the entry point:
Confirm there is no water accumulation or slippage risk in the surrounding area;
Set up safety barriers or warning signs if necessary;
Check the site lighting and ventilation to prevent the accumulation of harmful gases.
1.2 Cleaning Obstacles and Debris from the Pipes
Pre-inspection cleaning is crucial for improving image quality.
Use a high-pressure water jetting to pre-flush the pipes, removing sludge, grease, and deposits;
For hard blockages, a mechanical auger can be used to clear them first;
If residual water remains in the pipes, a water pump can be used to drain it, ensuring a clear camera image.
Inspection results after pipe cleaning are more accurate and help identify potential structural problems (such as cracks or settlement).
💡 Professional Advice: In large-scale municipal projects, it is recommended to review the pipeline network diagram in advance to determine the flow direction and slope, in order to plan the inspection route and avoid reverse advancement that could cause cable twisting.
II. Camera Advancement and Real-time Monitoring
2.1 Camera Advancement Techniques and Safety Controls
When using a Push Rod Sewer Inspection Camera, the operation should be smooth and orderly.
Maintain a uniform advance speed: The lens advance speed should be controlled at approximately 0.5 meters per second to prevent image blurring.
When encountering bends or branch pipe openings, the cable direction can be slightly rotated to allow the lens to turn naturally.
If resistance or abnormal vibration is encountered, stop immediately and check for obstructions such as gravel, tree roots, or collapse points.
Some high-end models (such as systems with motorized reels or self-propelled camera carts) also have automatic tension control and anti-rebound functions, making them more suitable for long-distance or large-diameter pipeline inspection.
2.2 Real-time Monitoring and Key Points of Image Observation
Real-time monitoring is the core of the entire inspection process. Operators should carefully observe the image details on the display screen, focusing on the following:
- Pipe wall structure: Are there cracks, peeling, corrosion, or collapse?
- Water flow status: Are there stagnant areas, backflow areas, or abnormally high water levels?
- Interface location: Is there any disconnection or misalignment?
- Intrusion and blockage: Are tree roots, grease, or debris clogging the pipe diameter?
- Odor or discoloration: If accompanied by an unusual odor or abnormal water color, there may be contamination or leakage.
Some HD Sewer Camera Systems support automatic image enhancement and rotation functions, enabling clear capture of details even in low-light conditions.
III. Problem Identification and Data Recording
3.1 Common Pipeline Problem Types
During inspection, operators need to possess certain diagnostic skills to identify different problem types accurately:
| Problem Type | Cause | Typical Manifestations | Treatment Recommendations |
| Cracks | Foundation settlement, aging, pressure changes | Longitudinal or transverse cracks in the pipe wall | Repair or replace the pipe section using CIPP lining |
| Root Intrusion | Plant roots penetrate the joint | Visible fine or large roots inside the pipe | Mechanical root removal + root-prevention chemical treatment |
| Blockage | Accumulation of grease, sand, and debris | Slowed water flow, localized water level rise | High-pressure flushing or mechanical cleaning |
| Misalignment | Installation error or ground displacement | Misalignment or leakage at the joint | Local excavation or casing repair |
| Corrosion / Collapse | Aging or acid/alkali corrosion | Pipe wall defects or deformation |
Replace the pipe material or re-line with CIPP |
Familiarity with these problems not only helps in determining repair methods but also serves as an important basis for communication with customers.
3.2 Image Recording and Location Marking
Every anomaly detected must be recorded visually and its location marked.
Simultaneous Photo and Video Recording: Record video using the DVR control box and capture key frames;
Location Measurement: Use a digital meter to accurately mark the distance to the anomaly point;
Voice/Text Annotation: Add on-site explanations or descriptions for later analysis;
This data will serve as crucial evidence for subsequent maintenance, comparison, and customer reports.
IV. Locating and Marking Problem Locations
4.1 Confirming Underground Location Using Positioning Equipment
Some Sewer Camera systems have a built-in Sonde Transmitter, which can be linked with a ground receiver for precise positioning.
Operating steps are as follows:
Activate transmission mode to allow the camera to send a signal;
The operator uses a Locator on the ground to search for the strongest signal point;
After determining the depth and location, mark it with paint or use flags.
This method allows for centimeter-level accuracy, facilitating subsequent excavation, repair, or CIPP lining operations.
4.2 Preparing and Sharing Inspection Reports
After inspection, a complete inspection report should be generated, including:
Basic project information (date, address, inspectors);
Equipment model and parameters used;
Pipe material, length, and diameter;
Screenshots and descriptions of anomalies;
Recommended repair methods (e.g., local repair, CIPP, pipe section replacement, etc.).
The report can be exported as an MP4 file and shared with the client.
For long-term projects, a database can be established for trend analysis and historical comparison.
V. Follow-up Processing and Maintenance Collaboration
5.1 Developing a Maintenance Plan Based on Inspection Results
After the inspection report is completed, the maintenance team should hold a discussion meeting to develop different levels of treatment plans based on the severity of the problem:
Minor problems (blockage, slight deposits): Regular high-pressure cleaning;
Moderate problems (cracks, misalignment): Local repair or CIPP lining reinforcement;
Severe problems (collapse, corrosion): Pipe section replacement or complete refurbishment. This data-driven "precision maintenance" significantly reduces rework and unnecessary excavation.
5.2 Cleaning and Re-inspection
After repairs, a second inspection using a sewage pipe inspection camera should be conducted to verify the thoroughness of the repair:
Compare the before and after footage to confirm that the problem has been resolved;
Check if the joints are sealed and if the pipes are unobstructed;
Archive the re-inspection video as part of the maintenance record.
Finally, clean and inspect the camera, cables, control box, and other equipment to ensure they are in good working order before the next use.
VI. Practical Application Scenarios
6.1 Drainage Inspection in Residential and Commercial Buildings
Through sewer cameras, homeowners or property management can quickly identify the source of slow drainage or odors, avoiding unnecessary demolition or excavation.
6.2 Municipal Pipeline Networks and Road Drainage
Municipal maintenance departments use CCTV pipeline inspection systems for routine inspections, which can identify potential risks in advance and reduce the risk of collapse.
6.3 Industrial Wastewater and Chemical Discharge Systems
In industrial environments, cameras help monitor pipe corrosion, deposits, or leaks, ensuring production safety and environmental compliance.
6.4 Rental and Maintenance Service Providers
For inspection service providers, mastering standardized operating procedures not only improves inspection efficiency but also earns customer trust and increases repeat purchase rates.
💡Conclusion
In modern pipeline maintenance, the Sewer Push Camera With Locator is not just an inspection device but also a "visual management tool."
It's an intelligent inspection method that "visualizes" the underground world, acting as a "third eye" for drainage maintenance, construction decisions, and urban safety. It makes every inspection accurate, efficient, and traceable.
From preparation, inspection, recording to reporting and repair, professional operation at every stage is crucial for ensuring the stable operation of drainage systems.
Whether you are a municipal maintenance unit, a sewer contractor, or an industrial drainage service provider, owning a high-performance pipe inspection system means higher efficiency, lower risk, and more accurate decision-making.
In the future, with the development of intelligent and digital detection technologies, visualized pipeline inspection will become a standard feature in the drainage industry, providing continuous and reliable health protection for the city's "underground arteries". If you want to know more about the sewer push or borehole inspection cameras, please feel free to contact us via email: info@bestdertech.com.

