Laser Profiling Reports
PVC Pipe Deformation
This video shows the collection of laser profiling data in a deformed PVC pipe prior to analysis and report generation. The circumferential data was collected during an internal remote video inspection performed with a robotic crawler.
From this raw video data collection, Maverick used software analysis to provide a report with defect measurements, and a full 3-D profile of the deformed section of the pipe. The PVC pipe inspection report below is generated from the data in the video.
The client used this information in order to determine whether or not the re-lining of this particular pipe was required, and if the resulting profile would provide sufficient flow for their processes.
The following image is from a sample plastic pipe with both internal and external bulging. Although video inspection often draws attention to these defects, the laser profiler adds measurement and analysis capabilities.
Mechanical Surface Wear in Carbon Steel Pipe
This is a sample page from the report showing mechanical wear due to improper installation of mechanical scrapers. In the laser profiling data, a 1.5″ (37mm) band of surface wear is evident on the internal diameter. Site engineers suspected excessive wear issues, and the 3-D laser pipe profile was able to confirm their suspicions.
In addition, Maverick provided information regarding the depth of the wear, the size of the problem area, and the specific location allowing them to focus repairs on the affected section of the line.
Pipeline Deflection Causing Pig Damage
Internal deflections are potential hazards for cleaning pigs. Laser profiling is an excellent way of locating and measuring defects that could cause a pig to become stuck or damaged.
This image shows a large carbon steel pipe with a 2.5 mm deflection at the 6 o’clock position. Once the problem was pinpointed, targeted repairs were carried out.
Ovality in Electrical Conduits
This page is a sample from a report showing pipe ovality. During a systems upgrade, this electrical conduit was re-assigned from three electrical cables to four. The original interior diameter was sufficient to handle the new cables, however the laser pipe profiling system indicated significant ovality.
The line restriction due to ovality had to be considered when assigning cables to the conduit. Maverick Inspection provided accurate sub-millimeter measurements of the interior cross section for engineering considerations. Armed with this profiling data, the client was able to re-evaluate the plan, and determine whether to proceed or replace/repair the deficient segments.
Coating Defects in Concrete-Lined Carbon Steel Produced Water Line
Defects in lined pipe such as coating loss, pitting, and spalling are measurable with laser pipe profiling technology. The laser data is collected during a camera inspection with robotic remote video systems of systems such as injection lines.
This report is from an inspection of a concrete-lined carbon steel produced water line. The cross-section shows the carbon steel pipe in black, the intended concrete coating in light blue, and the actual measured surface in dark blue. Notice that the coating is completely missing from one portion near the 4 o’clock position.
The unfolded view shows that such coating and wall loss is limited to a few areas, surrounded by mostly intact piping. This allowed the repairs to be focused on only the problem areas, resulting in cost savings through reduced maintenance, reconstruction and unplanned downtime. Repairing the missing coating avoided unnecessary corrosion of the carbon steel produced water line.
Sag in Drainage Line
Sags in underground piping are problematic. Roadways over lines, poor compaction in trenches, overall settling of soils and other problems can cause low areas. Water will collect in sags, as will sediment. In systems such as methane collection lines in landfills, this restricts the flow of gas. In drainage lines, this can lead to pluggage.
Laser profiling can quickly and accurately quantify the water, silts, or other material in the bottom of a pipe. This provides the data required for engineering decisions, and for prioritising repairs.