Assessing asset integrity

We can acquire a bathymetric survey with a multi-beam echo sounder and combine this with an above water survey for you. 

The result will be a seamless data set.  We acquire the above water survey on a low tide and the below water survey on the high tide. This results in an overlap in the two data sets.

For the above water survey, we can acquire vessel-based laser, land-based laser, or aerial drone photogrammetry.

Benefits:

• All survey data in one place
• Easy to extract measurements
• Assurance that the two data sets align

Deliverables:

Interactive 3D point cloud model hosted the web.

Using a multibeam echo sounder, the PLA can conduct a survey of a river wall for you. For this we usually tilt the multibeam so it is directed to the wall.

The point cloud data produced will allow defects -- such as missing bricks in the wall shown at right -- to be easily identified. This method is safer and more efficient than putting divers in the water.

It then allows any diving, if required, to be focused on areas of concern.

Benefits:

• Easy to take measurements from the data
• Can identify defects
• Historic record in case of any future damage
• Can reduce diver time and focus attention to defects

Deliverables:

• Interactive 3D point cloud model hosted the web
• Report

The PLA can gather bathymetric data over the scour protection, this will show if there is any erosion of material an allow early intervention.

This could be scour protection placed over the top of a tunnel, so it is important to know there is adequate coverage above the tunnel.

Additionally, if the surveys are repeated, you will be able to see the changes over time.

Benefits:

• Reduce risk
• Allow intervention before it’s too late
• Historic record

Deliverables:

• Interactive 3D point cloud model hosted the web
• Report

The PLA can capture a multibeam echo sounder image of the structure for you, which allows you to view the asset as 3 dimensional model.

For this the PLA vessel would move around the structure with the multibeam echo sounder tilted to look at the structure, so allowing maximum imaging of the asset.

In addition, the PLA can deploy divers to take ultrasonic thickness measurements, if required, thus building up a more complete picture of the asset.

Benefits:

• Easy to take measurements from the data
• Can identify defects
• Historic record in case of any future damage
• Can reduce diver time and focus attention to defects

Deliverables:

• Interactive 3D point cloud model hosted the web
• Plots
• Survey report(s)

The PLA can produce high resolution georeferenced photography. This will allow easy management of a large number of photographs.

Benefits:

• Georeferenced so that the photos can be displayed in Google Earth or similar viewer for easy management
• High resolution so that the images can be zoomed to see details

Deliverables:

• Report
• Georeferenced Images
• KML file for viewing in google earth

The PLA can acquire multibeam echo sounder over the pipeline route and identify any exposed sections. This will allow early intervention before pipe failure.

Also if you wanted to purchase a pipeline assets, such a survey would help confirm its condition ahead of purchase.

Benefits:

• Safe and non-intrusive.
• Calculation of fill volumes required can be generated
• Cost saving by early intervention

Deliverables:

• Interactive 3D point cloud model hosted the web.
• Plots
• Survey report

The PLA can collect data from a vessel mounted laser linked to the vessel's positioning system, allowing it to capture data as the vessel moves.

An ideal solution for survey of bridges, piers, and jetties. An example is shown in the grey scale image at right.

Benefits:

• Data importable into CAD packages
• Data can be integrated with multibeam echo sounder data to generate a seamless data set.
• Can take measurements from the data set
• Can generate profiles and cross sections

Deliverables:

• Report
• Point cloud