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One survey, unlocking a world of deliverables

3D Laser Surveys for Live Process and Industrial Sites

Neonex Digital carries out 3D laser surveys of storage terminals, chemical and process plants, energy centres and other live industrial sites across the UK and Europe. We capture your site once, safely and accurately, then turn the point cloud into the models, P&IDs and reports your engineers need.

What Are 3D Laser Surveys?

3D laser surveys measure every visible surface on your site with a tripod mounted laser scanner. The result is a registered point cloud, millions of measured points that reproduce the site in 3D, usually with panoramic images from every scan position.

You may also hear them called laser scanning surveys or point cloud surveys. A typical survey from us includes:

  • A registered, cleaned point cloud of the survey area
  • Panoramic images in colour or black and white
  • A registration report showing how well the scans fit together
  • The deliverables you ordered, built from the point cloud

Because the scanner records everything in its line of sight, your engineers can often measure from the existing point cloud when the next project comes up, instead of sending someone back to site.

extensibility
One four day survey of a European fuel terminal produced nine deliverables from a single point cloud. /

Example Point Cloud

Rotate and zoom around this sample. It shows the kind of registered point cloud, with measurements and asset tags, that our 3D laser surveys produce.

Registered point cloud of two storage silos with measurements and asset tags

Why Process Sites Choose 3D Laser Surveys

A tape or total station survey records the points someone chose to measure. A laser survey records everything in view.

Speed
An experienced surveyor completes 70 to 80 scans in a clear eight hour day, or 50 to 60 on busy, access restricted sites. /
Accuracy
Our Trimble X7 is specified at 2.4 mm 3D point accuracy at 10 m, with automatic calibration and self levelling. /
value driven
One visit serves engineering, maintenance and compliance teams, and next year's questions can often be answered without going back./
safe
The scanner measures from a distance, reducing work at height and near live plant. Its Class 1 laser is classed as eye safe./
versatile
Every setup records a full 360 degree view, so even on a one skid job the plant around it is captured too, ready for the next project. /

Neonex Digital guided us through our survey requirements and delivered a solution perfectly tailored to our project's needs, we look forward to working with them again

How Our 3D Laser Surveys work

Our 3D laser surveys follow the same five steps on every site.

1. Scope the job

We agree the deliverables, the accuracy each one needs and any site coordinates the data must tie into, then book inductions and permits. Our guide on how to prepare your site for laser scanning covers the practical side.

2. Plan the scan positions.
We start at the far corner of the site so the first area sets a fixed datum. Each setup is planned to see behind vessels and racks and to cover the blind circle under the last one.
3. Capture the site
Each Trimble X7 scan takes roughly 2 to 7 minutes, plus 1 to 2 minutes for images or 2 to 6 for HDR. We follow your permit to work system, using site gas monitors and radios wherever an area requires them.
4. Register and check
Scans are joined with targets or cloud to cloud matching, and we check every alignment by hand. Repetitive layouts, like a row of evenly spaced tanks, are where software can drop a scan in the wrong place.
5. Deliver in stages
On multi day surveys we export the first registered area after day one or two, so modelling and P&ID work starts while we are still on site.
Five step infographic of how a 3D laser survey works: scope, plan, capture, register and deliver

Deliverables From Our 3D Laser Surveys

From the same point cloud we produce:

Real example: one survey, nine deliverables

A 75,000 m² fuel storage terminal in mainland Europe, with 30 tanks, 9 road loading bays and 2 pump slabs, took four days to survey. The point cloud produced nine deliverables, including a Plant 3D model, smart P&IDs, API 570 piping isometrics, bund volumes and tank condition analysis. A virtual tour of the same data has cut the client's site visits by up to 50%. Read how that point cloud was reused.

etting up a tripod-mounted TLS laser scanner in a process plant

How Accurate Are 3D Laser Surveys

Two numbers decide the accuracy of 3D laser surveys: how precisely the scanner measures from one position, and how well all the positions fit together once registered. Brochures quote the first. The second decides how well your model lines up.

  • Scanner accuracy. The Trimble X7 is specified at 2.4 mm at 10 m, 3.5 mm at 20 m and 6.0 mm at 40 m.
  • Registration accuracy. The error between overlapping scans, shown in the registration report as overall error, overlap and confidence per scan pair. See our guide to scan to scan deviation.
  • Required accuracy. Design and analysis work needs tight tolerances, while some jobs only need 3 to 5 mm, which saves time on site.

What the scanner cannot see

The X7 sees 360 degrees horizontally and 282 degrees vertically, leaving a cone under the tripod it cannot measure. With the scanner 1.5 m above the floor, that blind circle is about 2.4 m across. Anything behind a vessel or pipe rack is hidden too, so overlapping setups are planned to fill both gaps.

Diagram of the blind circle under a Trimble X7 laser scanner: at 1.5 m height the unscanned circle is about 2.4 m across

Five Questions to Ask Before You Book a 3D Laser Survey

Quotes for 3D laser surveys of the same site can vary widely because they are not always for the same thing. Ask these five questions to compare like with like.

1. Will I own the registered point cloud?
Some surveyors keep it and hand over only drawings, tying every future job to them. Ask for E57, an open format, plus RCP or LAS if your software needs them, and a RAW copy.
2. Will I get a registration report?
It proves the scans fit together. Ask for the average and maximum error.
3. Is it tripod or handheld scanning?
Handheld SLAM is quicker on the ground but less accurate than tripod scanning, so two prices can be for two different products.
4. Has the crew worked on live process sites?
Permits, gas testing and plant movements decide how many scans get done in a day.
5. How will the data be delivered?
A hard drive costs almost nothing, while a hosted online viewer is a running cost, itemised or not.

3D Laser Scanning Gallery

Questions About 3D Laser Surveys

It depends on area, congestion and access. As a guide, the 75,000 m² terminal above took four days, and on multi day jobs the first registered area can reach your designers after day one or two.

There is no fixed rate per square metre. Crew size, tripod or handheld scanning, access, data ownership and delivery all move the price, so we quote per site. Our 3D laser scanning cost guide explains each factor.

Usually E57, an open ASTM standard most software can read, or Autodesk RCP and RCS files for ReCap, AutoCAD, Revit and Navisworks. LAS suits GIS work. Models and drawings come in your CAD format.

Yes, terrestrial laser scanning is a form of LiDAR, as it measures distances with laser light. A tripod scanner works close up for fine detail, while airborne LiDAR covers large areas from the air at a lower point density.

It only records what is in its line of sight, and each setup leaves a blind circle under the tripod. Overlapping scan positions fill those gaps, and noise from rain or standing water is cleaned up during processing.

Who Leads Your Survey

Neonex Digital was founded by Lewis Boxer, who has more than 25 years in oil and gas, including time at Coryton Refinery, and over 15 years in terrestrial laser scanning. He is Autodesk certified and leads our surveys and quality checks. Connect with Lewis on LinkedIn.

Working Safely on Live and Hazardous Sites

Process sites run on permits, and our surveys fit around them. Neonex Digital is CHAS Elite accredited, surveys are led by a CCNSG Safety Passport holder, and we work within your permit to work from induction to sign off.

  • Scanning is contactless, so plant rarely needs to stop
  • Our scanners are not ATEX certified, so in DSEAR zoned areas they are used only as your permit allows, with gas monitors and ATEX radios supplied by site
  • We do not carry out DSEAR assessments, but our point clouds and drawings can support the people who do
Company Number: 16047925
Neonex Digital Ltd, Chelmsford, Essex, CM1 6HU
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