In-Service Inspections
- External visual and UT surveys
- Operating condition assessments
- API 653 interval support
In-service inspections / Out-of-service inspections / MFL floor mapping / Calibrations / Surveys
Tank Services
Storage tanks require disciplined inspection programs to manage corrosion, settlement, and regulatory compliance. SIS provides in-service and out-of-service tank inspections, magnetic flux leakage floor mapping, instrument calibrations, and condition surveys for terminal and facility operators.
Tank services at Superior Integrity Services cover in-service and out-of-service inspection of aboveground storage tanks, magnetic flux leakage (MFL) floor mapping, tank gauging calibrations, and settlement/condition surveys. The work supports API 653 and STI SP001 compliance programs for terminal, tank farm, and refinery operators.
Methods & capabilities
What this service covers
Out-of-Service Inspections
- Internal shell and floor examination
- Coating and corrosion evaluation
- Turnaround scope documentation
MFL Floor Mapping
- Bottom plate corrosion screening
- Pit and metal loss detection
- Repair prioritization data
Calibrations
- Tank gauging equipment
- Instrument verification
Surveys
- Settlement and foundation checks
- Condition baseline documentation
Best for
- Terminal and tank farm operators
- Refinery storage assets
- API 653 compliance programs
- Out-of-service turnaround scopes
Standards we work to
- API 653
- API 570
- STI SP001
- ASNT SNT-TC-1A
How a scope runs
Field workflow
Mobilize
Tank inspection crews and MFL equipment deploy with scope, access, and safety requirements confirmed.
Inspect
Internal, external, or floor examinations are performed per API and client procedures.
Review
Corrosion and condition findings are prioritized against severity and repair timelines.
Report
Inspection packages support engineering disposition and regulatory records.
What you receive
Deliverables
- Tank inspection reports
- MFL floor mapping results
- Calibration records
- Repair and remediation recommendations
Tank services at SIS
From routine in-service surveys to full out-of-service internal inspections with MFL floor mapping, SIS tank crews work within the safety and access constraints terminal and refinery operators require.
Common questions
Tank Services FAQs
What is the difference between in-service and out-of-service tank inspection?
In-service inspections are performed while the tank stays in operation — external visual and UT surveys, operating condition assessments, and API 653 interval support. Out-of-service inspections require the tank to be emptied for internal shell and floor examination, coating and corrosion evaluation, and turnaround scope documentation.
How does MFL floor mapping find tank bottom corrosion?
Magnetic flux leakage (MFL) screening scans tank bottom plates for corrosion, detecting pits and metal loss and producing data that lets you prioritize repairs before returning the tank to service.
What standards govern SIS tank inspection work?
Tank inspections are performed to API 653 and STI SP001, with API 570 covering associated piping, by technicians certified under ASNT SNT-TC-1A.
Does SIS calibrate tank gauging equipment?
Yes. SIS provides calibrations for tank gauging equipment and instrument verification, with calibration records delivered as part of the inspection package.
What do I receive after a tank inspection?
Each scope delivers tank inspection reports, MFL floor mapping results, calibration records, and repair and remediation recommendations that support engineering disposition and regulatory records.
Related services
Often paired with Tank Services
API 510 / API 570 / API 653 / STI SP001 / Corrosion Mapping / MFL / Vacuum Box / Isometric/CAD Drawings
Mechanical Integrity
API 510, 570, and 653 mechanical integrity programs plus STI SP001 and isometric documentation for pressure vessels, piping, and storage tanks.
UTSW / GWT / PAUT / ToFD / AUT Corrosion Mapping / ET / XRF / LIBS / 3D Laser / MFL
Advanced NDT
Phased array, time-of-flight diffraction, guided shearwave, corrosion mapping, PMI, eddy current, and laser scanning for complex inspection programs requiring advanced ultrasonic and electromagnetic techniques.
RT / CR / DR / PT / MT / UT / VT
Conventional NDT
Radiography, penetrant, magnetic particle, ultrasonic, and visual testing for welds and components in shop and field — documented to API and ASME standards.
Request a quote
Need Tank Services on your next scope?
Tell us what you need inspected, where, and by when. We'll reply with scope and availability, usually same business day.