Advanced Robotics, State-of-the-Art Sensors and High-Density Data Acquisition

Operational Efficiency

• Minimal tank downtime
• No alternate storage required
• Inspection data to support optimized repair turnaround
• Minimal operational disruption

Comprehensive Data for Predictive Repair and Maintenance

• High-confidence, high-resolution data
• Big-data feed and advanced processing for API 653, API 575, EEMUA 159, RBI, EVA and digital platforms
• Multiple, state-of-the-art sensor sets

Environmental, Social and Governance

• Zero confined-space entry
• Reduced work at heights
• Carbon-equivalent releases contained per tank: Diesel > 5 tons; Gasoline > 20 tons

Source: Third-party verified for a 100-foot-diameter tank.

Commercial Efficiency

• $100,000 to more than $2 million in savings per tank operation
• Risk-based versus time-based inspections
• Tank and inspection cost level loading
• Informed resource and project planning

Source: Solomon Associates 2018 Fuels Study.

Quality & Performance

New Generation: SR-3

Square Robot's autonomous, submersible robots and advanced inspection technology enable safe, informed above-ground storage tank utilization by eliminating the need to take tanks containing volatile products, including diesel, jet fuel and gasoline, out of service for required internal inspection.

The inspection robots are certified safe for use in Class I, Division 2 hazardous locations by FM Approvals. Our robots combine state-of-the-art, patent-protected autonomous navigation capabilities with inspection payloads including phased-array ultrasonic testing and high-definition video cameras to safely survey critical areas inside a storage tank without taking the tank out of service.

On-Stream Above-Ground Storage Tank Inspections

Robot Components

• Shell rollers x2
• Thrusters x8
• Sediment removal system
• PAUT payload
• 4-point lift
• Omniwheels x3
• Cameras and lights
• Flotation and ballast weights
• Wireless communications
• Single-point lift
• Forward sensor suite

Product and Launch Compatibility

Designed to operate in gasoline, diesel, lube oils and more. Contact Square Robot for additional product compatibility information.

The SR-3 can be launched into a tank through a roof or shell manway with a minimum inner diameter of 22.75 inches (0.58 m).

Compliance at a Lower Cost

• Tank-bottom volumetric wall-loss inspection
• Internal visual inspection
• On-stream tank-bottom settlement characterization

Technical Specifications

SR-3 Features

Phased-Array Ultrasonic Testing (PAUT)

PAUT Specifications

• Probes: 4 probes, 64 elements each, staggered, operating at 10 MHz
• Overlap: 6-element overlap between adjacent probes
• Pitch: 1.5 mm
• Aperture: 7 elements
• Measurements: 208 measurements per sequence, spanning a 312 mm length
• Speed: 44 sequences per second

Elevation Mapping

Using its onboard pressure sensor, the robotic inspection system provides a novel and safe approach to conducting differential bottom-elevation measurements and surveying above-ground storage tanks.

The system allows tanks to remain filled with product, thereby collecting bottom-elevation data under fully loaded conditions. The approach uses one dataset to assess tank-shell, edge and localized bottom settlement, providing tank owners with asset-integrity information without service disruptions.

Visual - Camera Functionality

Multi-directional views from the high-resolution cameras allow the robot to record visual datasets on the condition of internal coatings, structures, nozzles and sediment accumulation levels. The robot correlates its position in the tank with phased-array ultrasonic testing and high-resolution visual data from the same location.

In simpler terms, when corrosion is visible, the PAUT data for that specific spot can be examined to provide information about its location, appearance and extent.

Robot Launch Capabilities

Advanced Navigation Technology

Square Robot's suite of tank-inspection robots is equipped with a proprietary navigation solution that allows the system to accurately and autonomously navigate inside GPS-denied environments within storage tanks.

Throughout each inspection mission, the robot continuously collects valuable data that allows asset owners to make informed decisions using quantitative information.

Roof and Shell Launch and Recovery Systems

Square Robot's SR-3 can be launched and recovered into the tank for inspection through a minimum 24-inch roof or shell manway, depending on project requirements.

Side Launcher

Contact Square Robot

At Square Robot, we offer a comprehensive solution for optimizing efficiency and safety during your routine tank inspections.

To gain insight into how our industry-leading above-ground storage tank inspection robots can benefit your operations, contact our team of experts.