NDT INSPECTION SERVICES
Phased array UT, conventional UT, magnetic particle, liquid penetrant, and visual testing by certified inspectors. Weld inspection, pressure vessel NDT, piping NDT, and turnaround NDT in Edmonton and across Alberta.
Non-Destructive Testing for Industry
Non-destructive testing (NDT) is the foundation of integrity assurance for pressure equipment, structural welds, and critical components. The right NDT method, applied by qualified personnel following written procedures, provides reliable data for accept/reject decisions and fitness-for-service assessments.
Alberta's oil and gas, petrochemical, and refining industries operate under codes including ASME, API, CSA, and AWS that specify minimum NDT requirements by joint type, service condition, and material group. Norman QC provides multi-method NDT inspection aligned to these code requirements for fabrication, repair, and in-service work.
Phased array ultrasonic testing (PAUT) is increasingly displacing radiography as the volumetric method of choice for weld inspection in industrial settings. It eliminates radiation safety logistics, provides electronic data records, and enables immediate onsite interpretation. Combined with TOFD for full volumetric coverage, PAUT delivers comprehensive weld inspection without the operational constraints of radiography.
What's Included
- -Phased array ultrasonic testing (PAUT) of welds and base metal for volumetric flaw detection
- -Conventional ultrasonic testing (UT) for wall thickness measurement and flaw detection
- -Magnetic particle testing (MT) for surface and near-surface crack detection on ferromagnetic materials
- -Liquid penetrant testing (PT) for surface-breaking flaw detection on non-magnetic materials
- -Visual testing (VT) per applicable codes including CWB, ASME, API, and AWS D1.1
- -Weld inspection per ASME Section IX, API 1104, AWS D1.1, and CSA W59 acceptance criteria
- -Pressure vessel NDT during fabrication, repair, and in-service inspection
- -Piping weld NDT for new construction and in-service inspection per API 570
- -NDT during turnarounds: rapid deployment, multi-method inspection, and same-day reporting
- -Third-party NDT witness and review for owner-operator quality assurance programs
NDT Methods Overview
PAUT (Phased Array UT)
Programmable multi-element probes producing steered, focused beams for detailed weld volumetric imaging. Preferred for weld inspection where radiography logistics are a constraint. Produces permanent electronic data.
Conventional UT
Single-element ultrasonic probes for wall thickness measurement, lamination detection, and point flaw sizing. The standard method for corrosion mapping and thickness grid surveys on pressure equipment.
MT (Magnetic Particle)
Surface and near-surface crack detection on ferromagnetic materials. Fast and reliable for weld toe cracking, grinding cracks, and heat-affected zone flaws on carbon and low-alloy steels.
PT (Liquid Penetrant)
Surface-breaking flaw detection on non-magnetic materials including austenitic stainless steel, nickel alloys, and aluminum. Widely used for root pass inspection and final weld surface inspection.
FAQ
What NDT methods are used for weld inspection in Alberta?
Weld inspection method selection depends on code requirement, material, weld geometry, and the flaw types of concern. PAUT and conventional radiography are the primary volumetric methods for full-penetration welds. MT and PT cover surface and near-surface flaws. VT is required by essentially all codes as a baseline. For pressure vessel fabrication under ASME VIII, the NDE requirements are specified in the applicable division and depend on joint efficiency and material group.
What is PAUT and when is it preferred over radiography?
Phased array ultrasonic testing (PAUT) uses multiple ultrasonic elements fired in programmed sequences to create steered and focused beams that provide detailed cross-sectional imaging of weld volumes. PAUT is increasingly preferred over radiography where radiation safety logistics are a constraint, for dissimilar metal welds, for austenitic welds where TOFD is used in combination, and for in-service weld inspection where ongoing access is required. PAUT does not require controlled radiation zones and produces immediately reviewable electronic data.
Is third-party NDT inspection required in Alberta?
ABSA regulates pressure equipment in Alberta and requires third-party inspection of pressure vessels and boilers under the Safety Codes Act. For ASME-stamped vessels, the Authorized Inspector (AI) function is typically performed by an ABSA-authorized inspection agency. Beyond regulatory minimums, many owner-operators specify additional third-party NDT in their quality plans for high-consequence welds, high-alloy materials, and critical service equipment.
Can NDT inspection be provided as a remote review service?
For certain scopes, yes. Review of PAUT data files, radiograph interpretation review, and NDT procedure review are services that can be delivered remotely. On-site physical inspection cannot be substituted by remote review. For operators who have in-house NDT technicians generating data, a remote Level III review and sign-off service is available for weld acceptance reports and procedure qualification.
NEED NDT INSPECTION SERVICES?
Contact for scope discussion and scheduling. PAUT, UT, MT, PT, and VT inspection in Edmonton and across Alberta. Rapid turnaround reporting available.