2227 verified suppliers listed
N
NDT Companies

Best NDT Companies in Louisiana

Louisiana is one of the premier markets for industrial NDT inspection in the United States, driven by one of the highest concentrations of oil refineries, petrochemical plants, and LNG facilities in the country, centered on the Baton Rouge–New Orleans industrial corridor and the Gulf of Mexico offshore sector. NDT companies in Louisiana perform API 510 pressure vessel inspection, API 570 piping inspection, API 653 storage tank inspection, and extensive pipeline integrity work under DOT PHMSA requirements. The state's offshore platform and marine inspection requirements add further demand for rope access–qualified NDT technicians and subsea inspection capabilities.

Why these suppliers?

  • ✓Louisiana's petrochemical corridor from Baton Rouge to the Gulf gives local NDT companies unmatched depth of experience with API 510/570/653 inspection, corrosion mapping, fitness-for-service assessment, and turnaround/shutdown inspection.
  • ✓Gulf of Mexico offshore operations have produced a cadre of rope access–qualified and marine-certified NDT technicians based in Louisiana, experienced with platform topside inspection, subsea pipeline NDT, and marine structural assessment.
  • ✓The concentration of facilities in a compact geography means Louisiana NDT companies can mobilize quickly to support turnarounds, emergency inspections, and scheduled ISI programs with short lead times.

48 verified suppliers found

Quality Control Specialists Inc
Youngsville, Louisiana5.0(1)
(337) 856-0707Website
Get QuoteView Profile
Quality NDT
Lafayette, Louisiana
+1 337-232-8411
Get QuoteView Profile
Southern Inspection & Testing, Inc.
Harvey, Louisiana
(504) 347-1752Website
Get QuoteView Profile
Southern Tool Inspection
Broussard, Louisiana5.0(5)
(877) 494-7940Website
Get QuoteView Profile
STIM Services
Broussard, Louisiana3.0(1)
(337) 606-0165Website
Get QuoteView Profile
Tri Star Ndt Inspection
Broussard, Louisiana
+1 337-451-6214
Get QuoteView Profile
Turner Specialty Services - NDE & Inspections
Baton Rouge, Louisiana4.5(8)

Turner Industries offers customized industrial specialty services, including hydroblasting, vacuum services, and chemical cleaning. Learn more today.

CWI (AWS)
+1 800-818-5434Website
Get QuoteView Profile
Welding Testing Laboratory Inc.
Baton Rouge, Louisiana4.6(48)
+1 225-357-1092Website
Get QuoteView Profile

Frequently Asked Questions

What API certifications should an NDT company have for Louisiana refinery work?
For refinery and petrochemical inspection in Louisiana, look for companies with API 510 (Pressure Vessel Inspector), API 570 (Piping Inspector), and API 653 (Above Ground Storage Tank Inspector) certified inspectors. These certifications require passing written examinations and demonstrate competency in the applicable inspection codes, fitness-for-service assessment, and repair/alteration documentation. For in-service inspection, the company's written practices should also reference relevant API RP 580/581 (risk-based inspection) and API 579 (fitness-for-service).
How do Louisiana NDT companies support offshore and marine inspection?
Offshore and marine inspection in Louisiana typically requires IRATA or SPRAT rope access certification for topside access, commercial diving or ROV support for underwater inspection, and technicians qualified under NACE CIP or API for corrosion assessment. Many Louisiana NDT companies maintain marine inspection divisions specifically for offshore platform, pipeline riser, jacket, and jacket-to-deck connection inspections. Confirm that the company holds the appropriate marine classification society (ABS, DNV, Bureau Veritas) recognition if your work requires third-party survey.
What NDT methods are most commonly used in Louisiana petrochemical facilities?
Ultrasonic testing (UT) — including phased array UT and corrosion mapping — is the dominant method for wall thickness measurement, corrosion monitoring, and weld inspection. Radiographic testing (RT) remains standard for weld quality on pressure piping. Magnetic particle testing (MT) and liquid penetrant testing (PT) are used extensively for surface and near-surface flaw detection during turnarounds. TOFD and automated UT systems are increasingly used for high-throughput weld inspection and fitness-for-service assessments on critical equipment.

Ready to get quotes?

Request a Quote