On sites where a risk of encountering deep buried unexploded bombs (UXBs) has been assessed, and where piled foundations are planned, 1st Line Defence can provide an Intrusive UXO Magnetometer Survey to provide clearance ahead of individual pile locations/clusters and boreholes.
This method permits survey at depths not achievable by non-intrusive methods and in conditions beyond the detection capabilities of a non-intrusive survey, such as in areas of ‘made ground’ and gross surface ferro-contamination. Anomalies identified during the survey which are modelled as having similar characteristics to a UXB, can be avoided or investigated dependent upon the site conditions and the client’s requirements.
The survey can be undertaken from a variety of platforms: from 20 tonne tracked and wheeled survey vehicles to midi-rigs, railway mounts and over-water configurations. At each survey position, a magnetometer probe is pushed into the ground under hydraulic pressure to provide clearance of a ‘column’ of soil down to an assessed maximum bomb penetration depth (which for generic London clay can be up to 12m below ground level).
An intrusive UXB survey ensures that a site can be quickly and efficiently checked for deep buried bombs so that construction can safely continue. With the number of unexploded bomb discoveries in the UK’s cities and towns increasing, this type of survey is increasingly providing piece of mind and assurance that workers and the public are kept safe during construction projects.
We own and operate our own fleet of specialist rigs and survey vehicles
No charge for standing time for issues which are within our control
Fast turnaround and results: our time on-site is minimised
Daily quality assurance checks of survey data – no anomalies are missed
See below for some of our other services and case studies. If you are not aware of the UXO risk, consider a Risk Assessment.
Specialist geophysical magnetometer survey for greenfield sites. Find out more about its suitability for your site.
Excavate and drill safely with an ex-military/reservist explosive ordnance disposal engineer on-site. Manage risk and Ordnance Disposal.
Fast, cost-effective Express Preliminary Risk Assessments within 24 hrs. Detailed risk assessments and consulting to mitigate risk.
Over 45 ex-military operatives and 30 support staff. 2,400+ projects completed. Thousands of unexploded devices cleared.
Contact us if you need more information or have questions or queries. We are always happy to assist or advise where we can.
Call: 01992 245020 or Email: firstname.lastname@example.org