Inspection
NDT inspection services
Every NDT method sees some flaws well and others not at all. A thickness gauge will not find a crack; magnetic particle testing will not find wall loss on the far side. We select methods from the damage mechanisms the equipment is susceptible to, then plan coverage, technique and acceptance criteria before anyone mobilises.
Choose a service line
Each service line lists its methods, with a page for each one.
Advanced NDT services
15 methods: encoded ultrasonics, electromagnetic, radiographic and imaging techniques for when conventional methods cannot give the answer.
ExploreConventional NDT services
10 methods: the surface, volumetric and material checks that every construction and in-service scope relies on.
ExploreAdvanced or conventional?
Conventional methods (VT, PT, MT, manual UT and film radiography) are fast to mobilise, well understood by every code and the right answer for most construction and routine in-service work.
Advanced methods earn their place when the question is harder: sizing a flaw’s height for a fitness-for-service assessment, mapping wall loss over an area rather than a point, screening insulated piping without stripping it, or replacing radiography so other trades can keep working. They usually take more set-up and need a qualified procedure, so we recommend them where they change the decision, not by default.
Choosing methods by damage mechanism
| Damage mechanism (API 571) | Typical methods |
|---|---|
| General and localised corrosion, erosion | UT thickness, corrosion mapping, profile RT, PEC screening |
| Corrosion under insulation (CUI) | PEC, guided wave, profile DR, targeted insulation removal with UT |
| Fatigue and stress corrosion cracking | MT/WFMT, PT, ECA/ACFM, PAUT, TOFD |
| Weld fabrication flaws | VT, RT/DR, PAUT, TOFD, AUT |
| Tube wall loss and pitting | ECT, RFT, NFT, IRIS |
| Tank floor soil-side corrosion | MFL floor scanning with UT prove-up |
| Wrong material, hardness and microstructure | PMI, portable hardness, ferrite testing |
| Coating and lining defects | Holiday testing, visual, DFT measurement |
Procedures, personnel and reporting
Inspection work is planned and supervised by ASNT Level III personnel. Our founder holds ASNT NDT Level III in UT, RT, MT, PT and VT. Technicians are qualified and certified to the employer’s written practice under ASNT SNT-TC-1A, or to ISO 9712 or the client’s own scheme where the contract requires it, and each technician’s certification is submitted for the client’s review before work starts. Reports list the procedure and revision, the equipment and calibration, the coverage achieved with any limitations, and each indication against the stated acceptance criteria.
Industries served
- Refining and petrochemical
- Oil and gas
- Power generation
- Fabrication
- Aerospace
- Marine
Frequently asked questions
What is the difference between advanced and conventional NDT?
Conventional NDT covers visual, penetrant, magnetic particle, manual ultrasonic and film radiographic testing. Advanced NDT uses encoded, imaging or electromagnetic techniques such as PAUT, TOFD, corrosion mapping, eddy current and digital radiography to size flaws, cover areas or work through insulation and coatings.
How are NDT methods selected for a piece of equipment?
From the damage mechanisms the equipment is susceptible to under API 571, the governing code, the access available and the decision the result must support, such as acceptance, remaining life or fitness-for-service.
In this section
Talk to an inspection engineer
Send the equipment list or drawings, the inspection you need and your timing. Quotes are prepared for each scope and region.
Request a QuoteRequest an inspection quote (RFQ)
Tell us the asset, the method, where it is, the governing code, your dates, the size of the job and the report you need. We reply with questions or a quote. Affordable, accessible, fully customizable — no published pricing.
Or email the same details to info@atlantisndt.com. Mobilisation: North America; confirm your location in your RFQ.
Speak to an ASNT NDT Level III
Atlantis NDT provides ASNT Level III consulting, NDT training to ASNT SNT-TC-1A, inspection management software and independent report validation. Request a free consultation and we will return a tailored quote — affordable, accessible and fully customizable to your programme.