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Pipeline Survey

Pipeline Survey

A pipeline Survey is defined as the method of assessing the existing condition of sewer collection and water distribution pipelines that run underneath a city. A pipeline survey can estimate the extent of damage and deterioration of a pipeline, and assess any need for repair, replacement or rehabilitation. With the advancements in trenchless technology, it is possible to determine the condition of installed pipelines without having to dig in order to visually inspect and repair a pipeline. Regular pipeline surveys can help prevent failures by highlighting weak spots, cracks, and corrosion in pipelines before they fail.

In the context of trenchless construction, it can be defined as the method of surveying a given land before a pipeline is laid to determine the position, depth, and length of pipeline running through that area. This can be done using geotechnical survey methods, GPS, and other such methods. It is crucial to carry out pipeline surveys to prevent cross boring and other related accidents while installing new pipelines.

Trenchlesspedia explains Pipeline Survey

Pipeline surveys for trenchless rehabilitation can be carried out from manholes using remotely operated equipment, some of which are equipped with sensors like radar and sonar to detect cracks, fissures, leaks and corrosion. CCTV cameras are also used for this purpose. Cameras are mounted on crawlers and connected to the operator’s computer. As the equipment traverses along the pipeline, any irregularities observed are noted. This ability to detect problems in pipelines helps prevent pipe failure and reduces the overall cost of repair. Trenchless rehabilitation methods like sliplining, CIPP, pipe bursting, fold and form pipe, and lateral lining may be utilized, depending on the extent of damage.

In trenchless construction, after carrying out a pipeline survey, the data is used to design a cost effective route for laying the new pipeline. Water pipes, sewer pipes, phone cables, TV cables, gas pipes, fuel pipes etc. are just some of the utility lines that run underneath a city. Carrying out installation without prior knowledge of the location of these lines can cause damage and is a safety hazard.

4 Ways Pipeline Surveying Services Are Changing

August 31, 2018/

As the oil and gas industry continues to evolve, pipeline surveying has become even more important. Pipeline surveying has to be completed both thoroughly and efficiently; an inaccurate survey can be environmentally dangerous and physically hazardous, while a lengthy survey can cost a business substantial amounts of money due to commercial commitments. New technologies have made it easier for pipeline companies to get the results that they need in a cost-effective way. Here are a few ways in which pipeline services are changing.

1. UAVs Are Becoming Commonplace

Drones, also known as UAVs (unmanned aerial vehicles), are steadily becoming more common throughout pipeline surveying. Traditional surveys were either done on foot or done by manned aerial vehicles. Neither of these were optimal solutions for many projects. On the ground, surveyors were often unable to get highly detailed information, needed to work slowly, and simply could not traverse some areas. In the air, manned vehicles were expensive and could not get high-resolution images of lower terrain. Both of these options were potentially risky to surveyors.

Comparatively, drones are great for pipeline surveying because they can cover large areas of the ground from a low vantage point, getting higher resolution images without any associated risk.

2. LiDAR is Being Used Interchangeably With Photogrammetry

Another technology that surveyors are utilizing to deliver more accurate results is LiDAR and Photogrammetry. LiDAR is a method of surveying that uses lasers to map the ground below. This mapping can cut straight through underbrush, thereby producing more accurate pictures of the terrain. As 3D modeling and simulations become more important to the process of construction, LiDAR becomes the more popular type of surveying. In more open areas, photogrammetry is the method of choice for producing point cloud deliverables, which used photos and 3D representations of the land to create a model of the terrain.