Nondestructive TestingDownload a PDF info sheetNondestructive Testing

Case Studies

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St. Peter’s Hospital

Location: Albany, New York

Summary: Seven-story addition to the existing hospital, including a new entrance building connecting the Cancer Center that added over 267,000 square feet of new space

Services Provided:

  • Structural steel inspections of shop fabrication and field erection
  • Geotechnical inspection of subgrade
  • Concrete field inspection and laboratory testing
  • Fireproofing inspections

Nondestructive Testing (NDT) is a classification of methods used to evaluate the physical properties of a material or component without causing permanent damage. The use of NDT is often a cost effective and preferred means of evaluating materials and components without impairing continued serviceability.

ATL has over 40 years of experience in NDT with staff certified and proficient in the use of numerous methods. In particular, we specialize in NDT of structural steel and welded connections used in construction, and used in various types of industrial components, systems, and storage vessels.


NDT Methods

  • Visual Inspection (VT)
  • Magnetic Particle Testing (MT)
  • Liquid Penetrant Testing (PT)
  • Ultrasonic Testing (UT)
  • Holiday Testing
  • Paint Thickness Testing
  • Tank Tightness and Leak Testing

Staff Certifications

  • AWS Certified Welding Inspector (CWI)
  • AWS Certified Associate Welding Inspector (CAWI)
  • ICC Structural Steel and Bolting Special Inspector
  • ICC Structural Welding Special Inspector
  • ASNT Nondestructive Testing Technician – Level I, II, and III

Relevant Standards

  • American Welding Society (AWS)
  • American Society for Nondestructive Testing (ASNT)
  • American Society of Mechanical Engineers (ASME)
  • American Society for Testing Materials (ASTM)
  • American Petroleum Institute (API)
  • American Water Works Association (AWWA)
  • Steel Tank Institute (STI)

Civil Construction Quality Control/Quality Assurance

  • Structural Steel Special Inspection
  • Structural Field and Shop Fabrication Inspection
  • High Strength Bolt Inspection
  • Visual Weld Inspection
  • Welder Qualification
  • PT, MT of Fillet and Penetration Welds
  • UT of Full Penetration Welds
  • Paint Thickness Testing

Aboveground Storage Tank (AST)

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  • AST Integrity Evaluation
  • Vacuum Box Seam Testing
  • Weld Seam Testing
  • UT Thickness Testing
  • Wet Fluorescent MT
  • API 653 Inspections
  • New Construction Inspection
  • Holiday Testing

Underground Storage Tank (UST)

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  • Tank Tightness Testing
  • Line Tightness Testing
  • Leak Detector Testing

Welding Procedures and Qualifications

  • Welder Performance Qualifications
  • Welding Procedure Specifications
  • Procedure Qualification Records

Forensic Investigations

  • Failure Analysis
  • Corrosion Surveys
  • Process Vessel Examination

Related Services

  • Physical Testing of Metals – Guide Bend and Tensile Strength
  • Alloy Determination
  • Materials Research