What is a Confined Space Survey?
A confined space survey is a specialist survey of a hazardous or hard-to-access environment that can ensure accurate data where traditional methods fall short. They require specialist training and equipment to mitigate potential risks and can be combined with most other types of survey equipment to provide deliverables such as Our teams are City & Guilds 6160-09 qualified for confined space entry and entry control, allowing us to work safely in challenging conditions and deliver reliable results without guesswork.
Data can be captured with terrestrial or drone-mounted LiDAR, total stations, or remote controlled crawlers.


When do I need a Confined Space Survey?
Confined space surveys are essential for projects involving underground chambers, tanks, culverts, or enclosed drainage systems. Using advanced equipment and strict safety protocols they can provided data on environments that are usually inaccessible using conventional surveying techniques. Situations in which a confined space survey could be required include:
- Before construction in enclosed areas to identify hazards and confirm dimensions accurately
- For compliance and safety. Confined spaces pose risks of toxic gases, flooding, and restricted movement – qualified entry teams ensure legal and safe operations.
- Part of your maintenance cycle. If machinery is situated in a confined space accurate and regular data prevents costly errors and delays.
Deliverables:
- Measured survey data for enclosed or restricted areas
- “CCTV drainage” inspection reports with linked video footage
- Digital drawings for integration into your design plans
- Risk and access documentation for compliance and safety
Our confined space teams can also combine these surveys with “Engineering Surveys”, “Utility Surveys”, and “CCTV Drainage Surveys” for a complete site solution.
Outputs available in:
- Video
- AutoCAD
- Point Cloud
- Revit
- Other platforms of the client’s choosing


Why Choose Interlocks?
- City & Guilds 6160-09 certified teams for confined space entry
- Specialist equipment for safe access and high-quality data capture
- Integrated solutions combining measured surveys and CCTV inspections
- Proven track record in delivering reliable results for complex environments
