What are the main methods of pipeline inspection

Pipeline internal inspection technologies include television inspection (CCTV inspection), periscope inspection (QV inspection), and sonar inspection.

Television Inspection (CCTV Inspection):

CCTV inspection is a precise television inspection technology. It is mainly used for the acceptance inspection of newly constructed pipelines, health condition checks of operational pipelines (maintenance and repair needs), inspection of cleaning and unblocking effects, and pre- and post-inspection of non-excavation repairs.

Periscope Inspection (QV Inspection):

QV inspection is a rapid detection technology that uses a control rod with adjustable length to place a high-definition probe with adjustable focus into inspection wells. Operators on the ground can real-time record and save internal images of the inspected object through the main controller. It enables quick capture and saving of defect images, input of inspection information through the keyboard, and overlay display and saving in the video image. It is highly integrated, compact, and lightweight.

Sonar Inspection:

Sonar inspection is a detection technology that uses the principle of sound wave reflection to analyze the deformation and quantify the sludge in pipelines. It is suitable for pipelines filled with water or with a high water level and lacking drainage conditions.

Electrical Leak Detection:

Electrical leak detection uses focused electrical current rapid detection technology to precisely locate pipeline leaks. It is not affected by sludge, pipeline grease, and scaling, does not require pumping, and can identify defects that CCTV inspection cannot see.

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