Visual inspection and cleaning of tanks in operation
The use of Specialty Remotely Operated Vehicles (ROV)’s allows visual inspection and cleaning with the tanks still in service, without affecting the quality of the water or the product being operated in.
For fire-fighting systems, the technique meets the requirements of NFPA 25 items 220.127.116.11.1 and 18.104.22.168.2.
The visual inspection allows, through high resolution images, to check the general internal conditions, welding regions, internal devices, columns, bottom and roof. It is highly recommended as a prerequisite of the cleaning process since it is possible to measure the volume of debris present in the bottom of the tank.
The cleaning process is designed to return the system back to its original capacities, avoiding clogging of sprinklers, proliferation of biodiversity and changing the pH of water, which can accelerate the corrosion process. It is possible to do this while the system remains in full service with no interruptions to fire protection of the facility.
Techniques applied in various water storage systems, such as:
• Fire fighting
• Cooling tower
• External reservoirs
Visual inspection in thermal storage tank
The ROV of visual inspection can be used in an offshore environment with solutions for hull inspection, FPSO, ballast tank, platforms, and pipelines among others equipment.
The submarine allows the spot measurement of thickness in plates of reservoirs and offshore structures.
•Removal of marine life;
•Eliminates fouling and oxidation;
•Surface preparation for assays.
•Proximity probe to carry out potential measurements;
•The voltage reading can be obtained remotely;
•Used in production and drilling platforms, ship hulls, among other applications.
•Replaces the need for a diver;
•Identifies possible erosions on turbine blades;
•Detection of leaking areas;
•Overview of infrastructure integrity.
Tank Inspection in Operation
Robotic tank inspection meets API 653 and eliminates the tank shutdown during the assay.
•Chemical products on request
•Assay with the tank in operation
•Inspection according to API 653
•No confined space work
•Determination of corrosion rate
•Calculation of tank remaining life
•Extension of mandatory shutdown
The mapping probe allows the evaluation of the topography and measurement of the volume of the sediments present in the tanks.
This technique is essential for the strategic maintenance planning, since it allows the prioritization of the tanks requiring service. The tanks can then be scheduled more effectively for cleaning action according to the larger volume of sediments, facilitating the prediction of resources, time and choice of cleaning technique to be applied.
Advantages of the Technique
• Tank remains in operation
• Quantify sediment volume with 95% accuracy
• 2D and 3D view of sludge topography
• Verification of the cleaning process required
• ATEX Certified Tool
Automated Sludge Collector
Sediment collection system designed to automatically remove settled solids in water treatment & industrial reservoirs through the use of vacuum pressure or submerged pumps.
•Capable of cleaning the basin floor from corner to corner without residuals.
•Remove the need to manually wash-down the sedimentation basins
•Improve the water quality before the filtration process
•Increase the overall facility production capacity
Robots for bottom and tank wall cleaning
ASP has just invested in a new line of robots for bottom and tank wall cleaning.
The services are performed with the tank in operation and in a short time, being ideal for small dimensions water tanks for human consumption that needs periodic cleaning.
ASP offers a service of inspection and cleaning of tanks using high technology ROV (Remotely Operated Vehicle) and guided by highly qualified professionals.
The use of the ROV allows visual inspection and cleaning with the tanks still in operation. Thus, it is not necessary to interrupt the water supply, avoiding impacting the users of the system.
The equipment has a magnetic coupling which allows the cleaning of the wall through high pressure blasting.
The system also allows the cleaning of tanks from the outside without the need for scaffolding or rope access.