Traditional tank bottom inspection technologies applied in the petrochemical industry require tanks to be offline during inspection. They must be drained, cleaned, degassed and ventilated – all of which involve safety and environmental risks, in addition to the safety risks involved with the requirement for human presence inside (out-of-service) storage tanks.
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Robotic tank bottom inspection allows for inspection of the tank bottom inside in Aboveground Storage Tanks (ASTs), while the tank remains online. The ability to perform this type of inspection without the requirement to remove a petrochemical storage tank from its operational service:
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Benefits of ROV Technology
- Minimizes disruptions in plant operations
- Eliminates tank downtime
- Eliminates the requirement for temporary liquid storage
- Minimizes waste disposal
- Reduces environmental risks (i.e. spills, VOC release)
- Improves safety by eliminating confined space entry and personnel exposure to hazardous chemicals.
The OTIS A500 tank bottom inspection system allows for ultrasonic wall thickness measurement of bottom plates inside in ASTs while the tank remains online. Performance of the On-line Robotic Tank Inspections in the petrochemical industry, typically involves the presence of hydrocarbon liquids and/or vapors in the storage tank (inside) and around the storage tank area (outside). Hence, the equipment used, personnel involved and working procedures applied must meet the safety requirements to operate safely in (classified) hazardous areas.