Storage Tank Surveys

• Accuracy: digital measurements can be captured to within 2 mm
• Safety: there is limited requirement for surveyors to remain within confined spaces or for them to touch or have contact with surveyed environments 
• Efficiency: large amounts of data can be captured with laser scanning techniques 
• High Hazard: our laser scanning team is trained to operate in high hazard industries. Risk assessed method statements (RAMS) are used for Oil & Gas, Petrochemicals, Nuclear and Tank Storage facilities 
• Speed: laser scanning captures data much quicker than traditional surveying methods 

• Visual Interrogation: we can deliver your data in multiple formats – be in 2D or 3D drawings, or an animated fly through 

Rim Seal Inspection Survey

For tanks with floating roof’s, Arthian can create a 3D model of the tank roof, which is then compared to the laser scanned data for the shell. The tolerances set by the rim seal manufacturer are then added to the model. We’ll move the model roof through the tank 3D model to check the tolerances throughout the tank shell, producing drawings with measured dimensions and showing allowed tolerances for seal gaps and seal compression.

Tank Deformation Survey

A tank storage deformation survey provides a general overview of the tank shell condition. The intensity of the scan contours can be adjusted to suit our clients needs. Further sections can be produced where areas of concern are identified and the data can be compared to theoretical cylinder geometry or to previous scans to calculate any differentials.

Tank Floor Scan Survey

3D laser scans of storage tank floors provide an accurate calculation for movement subject to loading. This reduces the likelihood of false readings and a similar principal can be used for tank foundations. This minimises the amount of time inspections take inside a confined space, and this remote method of surveying allows for greater accuracy of the readings taken on the tank floor.