Learn & Resources

Powering Asset Integrity: Actionable Knowledge from PetroBot Team. Know-how of Robotics and Corrosion Engineering by our Engineers.

Guides for inspection, robotics, data and visualization teams

Inspection Knowledge Hub

Technical notes for asset owners and inspection engineers working with robotic NDT, field data and reporting workflows.

Inspection data quality16 min read|Sep 4, 2026

UT Corrosion-Rate Trending: Comparable Thickness Data

Before subtracting two UT readings, prove they describe the same metal under a compatible measurement setup. Control location, validity, coverage, physical changes and inspection history first.

Qualify location, physical configuration, measurement validity and coverage before calculating a UT corrosion trend.
Define each location from a stable datum, local coordinates, direction, units, drawing revision and bounded examination area.
Compare like with like: a spot value, scan minimum and area statistic describe different evidence unless a qualified procedure reconciles them.

Illustration of repeatable ultrasonic thickness locations referenced from a fixed weld datum on industrial piping

Illustration of localized corrosion where a process pipe rests on a steel support

Pipeline inspection16 min read

Pipe Support Corrosion Inspection: Trunnions and UT

Plan pipe-support and trunnion corrosion inspections with focused visual checks, valid UT coverage, clear no-data zones and qualified follow-up.

Pipe support corrosionTrunnions

Illustration of an external floating-roof tank deck with pontoons, an access ladder, fittings, and standing water

Tank Integrity17 min read

External Floating-Roof Tank Inspection: Visual + UT Plan

Build a decision-ready external floating-roof inspection plan that separates visual observations, qualified UT readings, coverage gaps and roof-integrity decisions.

External floating roofTank roof inspection

Illustration of staining around a capped dead-leg branch on process piping

Pipeline inspection17 min read

Dead-Leg Corrosion Inspection: Robotic UT Mapping

A practical dead-leg corrosion inspection workflow for mapping risk features, UT coverage, valid readings and exclusions beyond sparse spot checks.

Dead-leg corrosionProcess piping

Illustration of sediment and coating wear across the submerged floor of a water tank

Underwater inspection17 min read

Underwater Water Tank Inspection: Visual + UT Workflow

A practical underwater tank inspection workflow using ROV video, local cleaning and UT spot readings, with clear coverage and hygiene controls.

Water tank inspectionUnderwater visual inspection

Illustration of weld seams, nozzles, and surface wear inside a steel pressure vessel

NDT Methods15 min read

Internal Pressure Vessel RVI and UT Gridding with MagRover

Plan internal pressure vessel inspection with MagRover RVI and UT gridding, including data quality, safety limits and underground-vessel considerations.

Pressure vessel inspectionRemote visual inspection

Illustration of welded storage-tank floor plates and visible staining beneath amber liquid

Tank Integrity9 min read

In-Service Tank Inspection and API 653: How Robotic UT Supports Integrity Decisions

How in-service robotic tank-floor data supports API 653 inspection planning, shutdown priorities and repair decisions while the tank remains operating.

API 653In-service inspection

Illustration comparing a closed operating storage tank with an adjacent tank opened for internal inspection

Inspection Economics8 min read

Robotic vs Manual Tank Inspection Cost: The Full Project Comparison

A practical cost model for comparing robotic tank inspection with manual internal inspection, including shutdown, cleaning, gas-freeing, scaffolding, confined-space controls and lost availability.

Tank inspection costShutdown reduction

Illustration of varied coating, corrosion, and deposit conditions across a storage-tank floor

NDT Methods10 min read

Storage Tank Floor Inspection Methods: MFL, Manual UT and Robotic UT Compared

A technical comparison of MFL floor scanning, manual ultrasonic testing and robotic in-service UT crawlers for storage tank bottom integrity programs.

MFLUT

Illustration of an open process-vessel manway revealing constrained internal geometry and surface wear

HSE & Access8 min read

Reducing Confined-Space Entry with Robotic Inspection

How robotic NDT can remove people from tanks, pressure vessels, boilers and water assets while reducing permit burden, rescue exposure and shutdown dependency.

Confined spaceHSE

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Tune into "Asset Intelligence" to hear directly from our engineers in candid, conversational deep dives. We break down the complex science of robotics and corrosion, sharing real-world stories and insights from the field.