SR-3

SR-3 is Square Robot’s autonomous submersible platform for inspecting aboveground storage tanks while they remain online. It combines eight-thruster mobility with 256-element phased-array ultrasonic sensing, high-definition cameras and settlement mapping to support API 653 and EEMUA 159 inspection workflows without confined-space entry.

Facts

  • Company: Square Robot
  • Type: Inspection Robot
  • Core: PAUT corrosion map
  • Function: Tank inspection
  • Audience: Asset operators
  • Status: Commercial
  • Website: https://squarerobot.com/solutions/sr-3-platform

Specifications

  • Mass Kg: 120.2 kg weight in air
  • Communications: Tethered fiber-optic communications
  • Certification: FM Approved; inspections support API 653 and EEMUA 159 workflows
  • Thruster Count: Eight thrusters
  • Paut Element Count: 256-element phased-array ultrasonic transducer
  • Ut Readings Per Sq Ft: Roughly 10,000 UT readings per square foot
  • Negative Buoyancy Kg: Approximately 4.5 kg negative buoyancy when submerged in distillate

Market context

Asset operators

  • Peer Group: Tank Inspection Robot
  • Workflow: Industrial inspection

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Capabilities

in-service storage tank inspection

  • Workflows: Industrial inspection
  • Robotic inspection - Commercial deployment - Square Robot documents SR-3 for robotic inspection of hazardous storage tanks while they remain in service. - source: squarerobot.com

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Timeline

  • Square Robot SR-3 receives FM hazardous-location approvals - 2025-01-29 - Regulatory - The certification supports robotic inspection while tanks remain in service. FM Approvals is the named certification authority. The approval supports Square Robot SR-3's path toward fielded use in maritime autonomy, underwater… - source: squarerobot.com

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