MagneScan IMU Inspection Tool

Determines the Exact Centerline

The Mapping tool records the exact centerline of the pipeline and is of great value in locating sections that have been moved or damaged by external forces. Subsidence, landslides, avalanches, floods, anchor dragging and underwater currents can put unexpected stress on a pipeline, as can human activities such as civil engineering, mining, tunneling and acts of war.

Features & Benefits

Data from an Inertial Mapping Unit (IMU) is combined with an MFL analysis to provide GIS coordinates to locate identified corrosion in your pipeline. Mapping can also identify pipeline displacement, which can compromise the integrity of your pipeline. The Mapping tool is ideal when operating in remote areas, saving you time and money by reducing the amount of post-processing and Mapping required, facilitating quick decision-making. Mapping tools are available in sizes from 12 to 48 inches.

Analysis & Reporting

A Mapping survey report provides the coordinates of the pipeline in three dimensions along its route. This valuable information allows a full range of maps, sections and detailed drawings to be generated for the pipeline. Reports can include pipe profiles and route maps, bend radius analyses, zoomed views of selected sections and pipebook information.

Pipeline information can be presented on-screen using commercial GIS systems or GE's PipeView suite of products to superimpose a mapping survey on a topographical map depicting key aerial landmarks such as roads, railway crossings and landowner information. This visual reporting approach makes it much easier to interpret and manage pipeline information.

Mapping Images

Operation

A Mapping survey measures and maps the pipeline in three dimensions to give a precise depiction of its route and profile. A gyroscopic inertial measurement unit (IMU) on-board the tool measures angular and linear velocity changes in the X,Y and Z axes as the tool moves through the pipeline. Mapping tools can map the pipeline with a very high degree of positional accuracy by establishing reference points with known geographical coordinates and GPS data at the start and end of the run, and at intervals between the two.

Mapping inspection enables the coordinates for girth welds to be calculated and recorded, and also determines the radius of bends and identifies any departure from the as-built condition. The Mapping tool runs in any medium. Data is pre-processed internally, and verified in the field immediately following the run. One unique feature of the Mapping tool that simplifies its setup and ensures quality data is the fact that the IMU is capable of determining its own alignment as it begins its inspection run. We also have the capacity to perform mapping with Caliper. These mapping tools are also available in sizes 6 to 56 inches.

This unique tool simultaneously maps the pipeline and checks it for corrosion. The corrosion inspection is by high resolution MFL from GE MagneScan™ tool, which delivers high quality data to identify and locate metal loss and is suitable for GIS analysis. Mapping data is integrated with inspection data during the run, reducing the amount of post-processing required.

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