Pipe Penetrating Radar (PPR)
At Tunnel Vision Surveys, we use advanced Pipe Penetrating Radar (PPR) to produce real-time, high-resolution imaging of subsurface services and pipeline structures. The technique detects and characterises buried infrastructure quickly and non-invasively, reducing exploratory digs and keeping live sites moving.
From location and depth to probable material type and signs of deterioration, PPR gives engineers and surveyors the clarity to plan with confidence—so before ground is broken, the critical unknowns are already addressed:
- Non-destructive surveying – no digging or intrusive works, protecting surrounding structures and surfaces
- Rapid data collection – large areas scanned efficiently for fast decision-making
- High accuracy – modern systems flag pipelines, voids, leakage indicators and anomalies with impressive precision
- Versatile in mixed conditions – effective across a range of soil types, paved areas and constrained sites
- Cost-effective risk reduction – early identification prevents expensive rework and delays
Our Capabilities
We configure the radar setup for your ground conditions, site constraints and objectives, then translate results into clear, usable outputs:
- Detect and map metallic and non-metallic services – water, wastewater, gas, comms and unknowns
- Measure depth and position – traceable coordinates and levels referenced to site control
- Identify structural anomalies – potential leaks, voiding, loss of support, joint issues and intrusions
- Integrate with GIS and BIM – deliverables aligned to your CDE (e.g., SHP/GeoJSON, DWG/IFC, geotagged media)
- Operate in congested corridors – reliable results in complex, built-up environments and under highways
Our Inspection Process
The workflow balances speed, traceable accuracy and minimal disruption, producing outputs that drop straight into engineering and planning:
- Consultation – Review objectives, records and constraints; assess ground conditions to select the right antenna(s) and survey strategy.
- Survey Planning – Define grid spacing, traverses and coverage; set control and file formats to match your workflow.
- On-Site Scanning – Deploy advanced PPR systems to collect high-density radar data, with safe-dig and traffic management where needed.
- Data Analysis – Process and interpret datasets, correlate with records/EM locating, and mark up depth, route, crossings and anomalies.
- Reporting – Deliver clear drawings and datasets with radargrams, georeferenced linework, confidence levels and practical recommendations.
PPR vs Traditional Survey Methods
When compared with manual trial holes or basic tracing, PPR gives a fuller picture with less disruption, especially beneath live carriageways or sensitive structures:
- No physical excavation required for initial confirmation
- Greater depth certainty and improved positional confidence
- Near real-time results to accelerate site decisions and permits
- Reduced health and safety risk by limiting ground disturbance
- Lower overall costs through fewer exploratory digs and design changes
Typical Applications
Useful from early feasibility through to construction and handover:
- Utility detection and mapping for construction and infrastructure projects
- Pipeline checks and potential leak detection to prioritise repairs
- Site investigations supporting redevelopment, planning and due diligence
- Locating unknown or abandoned services ahead of intrusive works
- Supporting trenchless operations (launch/receive pits, clearance and alignment checks)
FAQs
Frequently Asked Question
What is Pipe Penetrating Radar (PPR)?
A non-destructive radar technique that images subsurface services and pipeline structures in near real time, reducing exploratory digs and disruption.
What does PPR detect?
Metallic and non-metallic services, depth and position, and structural anomalies such as potential leaks, voiding, loss of support, joint issues and intrusions.
Where does PPR work best?
Across mixed ground and paved areas, including congested corridors and live highways where access is constrained.
How accurate are the results?
Modern PPR provides high positional confidence and depth estimates referenced to site control; we state method-specific tolerances in our reports.
Do you need to dig or shut assets down?
No—PPR is non-intrusive and typically runs without excavation or shutdowns, keeping live sites moving.
What will we receive?
Clear drawings and datasets with radargrams, georeferenced linework, confidence levels and practical recommendations—ready to drop into your workflows.
Can the outputs integrate with our systems?
Yes—deliverables align to your CDE and include SHP/GeoJSON, DWG/IFC and geotagged media for BIM/GIS/AMS integration.
How do you plan coverage on complex sites?
We define grid spacing and traverses up front, then correlate PPR with records/EM locating to increase certainty.
How fast is mobilisation and turnaround?
We’re set up for rapid deployment; actual timings depend on access, area and required deliverables.
How does PPR compare with trial holes or basic tracing?
It provides a fuller picture with less disruption, better depth certainty and faster site decisions—often reducing the number of intrusive checks needed.