Inspections
Thermal drone surveys: what can they actually show?
Understand what a thermal image measures, what it cannot prove and how to commission useful analysis rather than a colourful picture.
The assessment in brief
Who should consider RUAS?
RUAS is relevant to industrial asset owners who need inspection evidence or spatial data collected around a defined engineering question. Its catalogue spans visual, thermal, confined space and survey work, with UK and overseas projects advertised. Our editorial assessment is that the breadth is useful only when the inspection method, analysis and handover are clearly scoped for the asset. Distinguish a commissioned service from its separate training offer, and compare the proposed evidence and responsibilities with other industrial providers rather than comparing flight time alone.
Strengths to consider
- A service catalogue spanning industrial, offshore, building and confined space inspection.
- Survey outputs including point clouds, orthomosaics and 3D models.
- Thermal inspection material describes electrical applications and repeat analysis.
What to check
- Confirm asset access, isolation and environmental suitability before choosing a method.
- Agree interpretation responsibilities and escalation of urgent findings.
- Specify data formats, survey control and quality evidence separately from capture.
Service fit ratings
| Roof inspections | |
|---|---|
| Surveying & mapping | |
| Photography & film | |
| Thermal imaging | |
| Construction progress | |
| Infrastructure |
These describe the focus of advertised services. They are not customer satisfaction or tested quality scores. “Not assessed” does not mean unavailable. How the criteria work.
Scoping an industrial inspection
The RUAS catalogue lists roof and building, visual, offshore and thermal inspections, non destructive testing and survey services. Its visual inspection material describes sectors including rail, utilities, construction and oil and gas, with work across the UK and beyond. These descriptions identify advertised applications; they do not establish that every method is appropriate for every asset or that all analysis is included in one visit.
As buyer guidance, supply asset identifiers, drawings, known defects and the decision the inspection must support. Agree required coverage, defect types and the person responsible for reviewing findings. Specify access arrangements, shutdown dependencies and how urgent observations reach your maintenance team. Ask how excluded or inaccessible areas will be recorded, and whether further specialist investigation is part of the proposal or a separate commission.
Confined space access and limitations
The confined space page describes indoor inspection of assets such as tanks and furnaces. That is a distinct inspection setting from an outdoor roof visit. A service description does not mean a drone can enter every confined space, operate in a live explosive atmosphere or remove the need for an asset owner to assess the working environment and isolation conditions.
Provide entry dimensions, internal geometry, lighting, dust or contamination concerns and the asset's operating state before mobilisation. Ask which capture method is proposed and what site preparation is needed. Agree responsibility for isolation, supervision, communications and equipment recovery. The quotation should identify limitations and an alternative plan if the inspection cannot achieve the required coverage, rather than leave feasibility to the day of attendance.
Defining survey and thermal outputs
Survey services include topographical surveys, photogrammetry, point clouds, orthomosaics and 3D models. The thermal page describes electrical inspection and repeat inspection or analysis. Do not assume all thermal capture is aerial: the suitable method depends on the asset and required evidence. Similarly, a model for visual inspection and a dataset used for engineering measurement need different specifications and acceptance checks.
Have the receiving engineer approve file formats, reference systems and tolerances before capture. Request the proposed control and quality evidence rather than a generic accuracy assurance. For thermal work, define operating conditions, the analysis depth and who interprets anomalies. For repeat visits, agree asset identifiers, comparable capture conditions and how changes will be reported so later evidence can be used alongside the original record.
Pricing & getting a quotation
Request a services quotation through the official contact page, not a training booking. Separate mobilisation and fieldwork from processing, inspection interpretation and any specialist testing. Include access or isolation dependencies, repeat visits, reporting turnaround, VAT and handover. Ask what changes the price if coverage is restricted or additional investigation is needed. Compare equivalent asset coverage and analysis responsibilities rather than assume an imagery only proposal includes an engineering assessment.
For a consistent comparison, use our drone service cost guide and buyer’s checklist.
Questions to ask RUAS
- Which inspection method suits this asset, and what access, isolation or environmental conditions must we provide?
- Who analyses the evidence and communicates urgent findings, and how are uninspected areas reported?
- Which survey control, quality evidence, file formats and repeat inspection comparisons are included?
