Survey_
Surveys are technical site based services that explore beneath the surface and detect buried ferrous objects. UXO surveys come in two key forms, intrusive and non-intrusive. We can clear wide open areas up to 6m below the ground, down to single pile locations up to 25m deep.
Non-intrusive UXO Survey_
Using state-of-the-art equipment in a drone, towed or pushed method, we can clear large areas up to 6m in depth. We collect technical data, processed in house by our geophysics team, lead by Dr Sumana Basu.
Our non-intrusive survey platforms are detailed below.
A five-channel system for the detection of ferro-magnetic anomalies in small to medium sized areas carried out by a specialist two-person team.
An eight-channel gradiometer system for the detection of ferro-magnetic anomalies in large areas carried out by a specialist two-person team. Towing the sensors behind an all-terrain vehicle and the wider sensor array increases time-efficiency without detriment to resolution or quality.
Our proprietary JUNO system enables us to carry out surveys in areas where a push-cart or towed-array system could not reach.
Intrusive UXO Survey_
Deploying to site one of our rigs, we can survey single pile positions or clusters for any deep intrusive works. For large scale excavations, we can provide a site-wide matrix clearance, offering complete survey solution to a maximum depth of 25m across a large area. Our system is triaxial, meaning it models targets in three dimensions, this allows more than one pile position to be cleared per one survey position.
A key benefit of this methodology is that it can be deployed to brownfield sites or sites with areas of made ground – sites that would usually be unsuitable for a non-intrusive methodology. Additionally, greater depths can be achieved with this system when compared to the non-intrusive system.
Where anomalies are detected, the data will be analysed and assessed by our in-house geophysicists. If an anomaly models the characteristics of a UXB, our operations team will discuss and plan the next step in the UXO risk mitigation process.
Aerial UXO Survey_
Time, safety and budgetary constraints are a factor in all construction related projects. Drone systems routinely deliver superior survey coverage, surveying up to five times as many hectares in a single day compared to the push-cart system, bringing the costs down. Drone systems are also highly suited to difficult to access areas.
Small to large areas of surveying, up to 4m below the surface.
Radiation sensor to capture gamma sources autonomously via pre-determined flight waypoints. When radiation is detected an alert with GPS coordinates is sent to the operational base station and plotted on radiation maps for comparison against highlighted changes in isotopes across the survey area.
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