Magnetic Flux Leakage (MFL) in Pasadena, TX

Why MFL Matters Across the Gulf Coast

Above-ground storage tanks are central to refineries, terminals, and chemical facilities along the Houston Ship Channel and throughout the Texas refining corridor. Their floors face corrosion from both the product side and the soil side, often in areas that are difficult to evaluate through visual examination alone. Identifying localized pitting and wall loss before they compromise containment helps facility teams make informed maintenance, repair, and continued-service decisions.

For Gulf Coast operators, inspection planning must account for demanding service conditions, operating schedules, and the consequences of an unplanned tank outage. Magnetic Flux Leakage (MFL) provides a practical way to screen large areas of an accessible tank floor efficiently. The resulting findings can help integrity teams prioritize follow-up examination and direct repair resources where they are needed. MFL supports asset integrity decisions; it does not replace engineering evaluation or any required supplementary inspection.

How Magnetic Flux Leakage Works

Magnetic Flux Leakage is a non-destructive testing (NDT) and non-destructive examination (NDE) method commonly used to assess above-ground storage tank floors. An MFL scanner magnetizes the steel as it travels across the floor. Where corrosion, pitting, or other metal loss interrupts the steel’s ability to carry the magnetic field, some of that field leaks from the plate. Sensors on the scanner detect changes in the field and capture indications for review.

Automated scanner passes create a mapped record of indications across inspected areas, often displayed in a color-coded corrosion map. This helps the inspection team identify patterns of possible wall loss and locations that may warrant closer examination. MFL is a screening method: its indications are interpreted in context and may require confirmation using complementary NDE techniques, such as ultrasonic thickness measurement, according to the inspection plan and applicable requirements. Results depend on factors including plate condition, surface accessibility, scanner setup, and the examination procedure.

What TechCorr’s Pasadena Team Delivers

TechCorr’s Pasadena headquarters anchors its Gulf Coast operations, with inspection resources and service coordination based near the Houston Ship Channel. For tank-floor MFL work, the team can support planning, field examination, indication mapping, and reporting to help owners and integrity engineers evaluate next steps. The scope is developed around the tank, inspection objectives, access conditions, and the client’s applicable procedures and code requirements.

Findings can inform decisions about targeted follow-up, repair planning, and tank fitness-for-service evaluation by the responsible engineering authority. MFL results also contribute to an asset integrity program by documenting examined areas and helping teams organize inspection findings alongside operating history and other inspection data. TechCorr’s broader Pasadena capabilities include storage tank inspection, conventional and advanced NDE, radiographic testing, and asset integrity management, allowing clients to coordinate complementary inspection needs through one local office.

Standards, Qualifications, and Inspection Planning

The governing documents depend on the asset and the inspection scope. API 653 is particularly relevant to the inspection, repair, alteration, and reconstruction of above-ground storage tanks. API 510 addresses pressure vessel inspection, while API 570 covers in-service piping inspection; these standards may be relevant to a facility’s wider mechanical-integrity program, but they are not substitutes for the tank-specific requirements governing an MFL examination.

ASNT qualification practices provide a framework for NDT personnel qualification and certification. NACE International is now AMPP, and its corrosion-related resources can help inform corrosion management programs and technical decisions. ISO standards may also apply to a company’s quality-management system, personnel certification framework, or documented inspection processes, depending on the contract and jurisdiction. Applicable editions, owner-user requirements, written practices, and acceptance criteria should be confirmed before work begins. TechCorr coordinates inspection scope and reporting with the client so MFL results can be used appropriately within the site’s established integrity process.

Why TechCorr Pasadena

TechCorr’s Pasadena office combines local Gulf Coast reach with the resources of a national inspection provider. Its position near the Houston Ship Channel supports mobilization across the region, while the office’s established strengths in storage tank inspection, conventional and advanced NDE, radiographic testing, and asset integrity management help connect inspection findings to broader facility needs.

If you are planning an above-ground storage tank floor inspection, need to assess corrosion indications, or are preparing for a maintenance window, contact TechCorr’s Pasadena team. Share the tank details, access conditions, schedule, and applicable inspection requirements to discuss an MFL scope and practical next steps. TechCorr can also coordinate other available services from its flagship headquarters, with nationwide mobilization when your inspection program extends beyond the Gulf Coast.