An Intrusive UXO Survey makes sure that a project can be quickly and efficiently checked for deep buried unexploded bombs (UXO/UXB) so that development can continue safely.
On projects where a risk of encountering UXO/UXB has been assessed, and where deep intrusive groundworks such as piled foundations are planned (more than 4 meters below ground level) – an Intrusive Magnetometer Survey will provide detection and clearance ahead of individual pile locations, clusters and boreholes.
This survey method provides detection of items of ordnance at depths not achievable by Non-intrusive UXO Survey methods, or in ground conditions which have gross surface ferro-contamination.
This survey method is a reliable way of minimising UXO risk on Brownfield land projects.
It’s a process where a magnetometer probe is pushed into the ground by specialist survey equipment using hydraulic pressure, and we survey a column of soil to detect for deep buried unexploded bombs (UXO/UXB).
As the magnetometer probe is pushed into the ground, a ‘real-time’ display of the magnetometer reading is fed back to the survey engineer present.
This allows for a check of both ferrous anomalies directly beneath the probe (the probes have look-ahead capability), and for any horizontal deviation of the probe (detected by inclinometers in the probe body) so that if necessary the survey can be terminated or corrected.
Each survey position provides a column of clearance down to an assessed maximum bomb penetration depth (which for generic London clay can be up to 12m below ground level), and we can often check multiple pile locations per survey – reducing the overall number of surveys required.
An Intrusive UXO Survey is normally carried out before planned piling works and can be deployed from several different platform configurations to suit specific projects (large, small, restricted access – on ground, rail or overwater).
Real-time data logs are saved and processed by our in-house geophysical team, and advanced software analysis creates a false-colour survey map showing all identified ferrous targets and anomalies which model (in size and shape) as potential UXO/UXB.
The reports present the results clearly and concisely, and we explain any potential risks to you, and if needed – outline any further specialist support required.
Any anomalies identified during the survey that have similar characteristics to UXO/UXB, can either be investigated (and excavated) or avoided – depending on the client’s requirements.
We can deploy specialist magnetometer survey equipment to detect for shallow-buried items of UXO on your Greenfield project.
Take advantage of the latest Drone / Aerial UXO Survey technology to detect for shallow-buried items of explosive ordnance.
We offer a wide range of professional services and technology to assess, survey, mitigate, support and manage the risk of Unexploded Ordnance (UXO).
Assess, survey and mitigate the risk of UXO on marine projects. We offer ROV Surveys, Diver Investigation, Dredging and Clearance services.