Asset Surveys

For a recent project in Venezuela, we have mapped features such as buildings and facilities near to pipelines and produced a GIS package to facilitate risk analysis. For pipeline operators working in USA, an asset survey will help compliance with DOT regulations such as "the Pipeline and Hazardous Materials Safety Administration's Rules on Pipeline Integrity Management in High Consequence Areas for Hazardous Liquid Operators (49 CFR Part 195)".

GPS control survey for Inertial Measurement Unit (IMU) in pipeline detection tool.

We specialise in the provision of GPS and survey support for pipeline mapping projects worldwide. Using GPS, we measure traps, welds and control points along the pipeline in order to correct the IMU drift. This correction is done through in house software. This method will minimise dig time and costs when locating the defects and anomalies.

Class Location Surveys

We also provide pipeline asset surveys and can incorporate this data into a GIS for a variety of uses such as class location risk analysis. This work is often generated through pipeline safety regulatory requirements, necessitating in-line inspection, integrity analysis and risk assessment.

Our in-house software classifies the pipeline automatically using the rules laid out in either 854.1(c) in ASME B31.8 or the UK equialent, IDE/TD/1. The software solution aids in determining class locations by analysing the number and type of buildings within a certain proximity to the pipeline.

LiDAR Surveys (Aerial LiDAR)

Prior to (or after) construction of a pipeline, a LiDAR survey allows for the identification of off-line concerns such as rivers, streams, ditches and buildings and provides an accurate portrayal of ground conditions along the pipeline. For further information on airborne laser scanning, please visit our dedicated website: www.lidar.co.uk

Why use LiDAR data?

When modelling overland flows, it is important to obtain the best available, highest resolution data possible. The standard for Digital Elevation Models (DEM's) in the US is the National Elevation Dataset (NED) that provides a consistent product for the entire U.S at a 30m (or in some areas 10m) grid cell resolution.

Using a LiDAR survey, combined with the aerial photography will provide a DEM with a grid spacing of 0.5-1m if required. Using the NED data set, micro terrain features that may channel the oil flow into a narrow width even on a steep slope may be missed. This may even indicate that oil flow would infringe upon a High Consequence Area (HCA) when in fact it would be channelled away.

The aerial photography combined with LiDAR data will provide up to date land classifications, show areas of dense foliage which will reduce oil mass, illustrate areas where oil will pool and even indicate soil type.

Terrestrial Laser Scanning

Reduce your risk; discover the clashes and interferences on complex structures prior to offshore installation by laser scanning the structure in the fabrication yard. Visit our dedicated site at www.laserscanning.co.uk