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NDT | Non-Destructive Testing

NDT | Non-Destructive Testing
Non-destructive testing, or NDT, is the inspection for faults, material inconsistencies and hazardous substances in something without damaging the object of the test. Destructive testing methods measure a product’s resistance to environmental stress; non-destructive techniques, however, discover structural faults through testing methods both non-invasive and potentially more revealing, harnessing the power of ultrasonic, infrared and laser technology. Conducting NDT saves money and time, reducing production costs by preserving the article under test and allowing engineers to experiment with several testing parameters before returning to research and troubleshooting. 


NDT Inspection
 


ASNT Standards

Engineers look to the American Society for Nondestructive Testing (ASNT) for NDT personnel qualification and certification practices. When selecting an engineer to perform NDT on your product, machine or facility, refer to the following standards to verify their ASNT compliance.
 
  • SNT-TC-1A
    • Guidelines for developing your own in-house NDT certification program; includes recommended skill levels for all tiers of NDT qualification, including training/experience hours and examination eligibility.
  • ANSI/ASNT CP-189
    • Establishes the minimum standards for qualifying/certifying NDT personnel. An American National Standard which differs from the “recommended practices” of SNT-TC-1A by detailing hard requirements rather than educated suggestions.
  • ANSI/ASNT CP-105
    • Outlines training for Level I and Level II personnel as well as topical outlines of Level III qualifications. Details minimum training courses for each.
  • ANSI/ASNT CP-106
    • An adoption of ISO 9712:2005 which describes certification requirements for engineers to conduct the following: Electromagnetic Testing (ET), Magnetic Particle Testing (MT), Liquid Penetrant Testing (PT), Radiographic Testing (RT), Ultrasonic Testing (UT) and Visual Testing (VT).
  • ANSI/ASNT ILI-PQ-2010
    • Focuses on the requirements for certifying in-line inspection (ILI) personnel who will be evaluating pipes and pipelines. 

NDT Equipment

Machinery Maintenance
Machinery maintenance testing devices asses the functionality of machine parts like motors, pumps, and other components, testing for parameters like rotation angle, flatness and vibration resistance. Test and measurement instruments like laser shaft alignment tools, sound level meters and vibration analyzers will offer insights into machines which may prevent failures or identify flaws and empower technicians to make educated decisions on a machine’s lifespan.
 
Vibralign Fixturlaser EVO
Laser Shaft Alignment
Shaft alignment tools are trusted to readjust assembly line machines, dc motors, and other industrial equipment. Whether you’re looking for vertical or horizontal alignment, ATEC rents shaft alignment tools to suit your specific needs. Shaft alignment tools are capable of measuring rotating machinery, straightness, flatness, perpendicularity, parallelism, spindle alignment and thermal growth.

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Materials Testing
Materials testing is the evaluation of components or systems in a non-destructive fashion to detect flaws, contamination, inconsistency in material or other physical parameters. A materials test will use methods which allow for in-depth analysis without destroying the sample or, if it is a product, rendering it useless.
 
Thermo Scientific Niton XL3t GOLDD+ XRF Analyzer
XRF Analyzers
XRF Analyzers assess the chemical breakdown of a given sample by determining the fluorescent X-ray emitted from the test subject when it is stimulated by a primary X-Ray source.

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Visual Inspection
Visual inspection is a non-destructive testing (NDT) method involving the visual examination of components, machines and facilities. An engineer or inspector can inspect an item by using Videoscopes, High Speed Cameras, or Thermal Imagers.
 
Olympus IPLEX FX Industrial Videoscope
BORESCOPES | VIDEOSCOPES
Borescopes or videoscopes are an optical device with a tube, eyepiece and objective lens, are used for visual inspection of machinery, structures, or specimens where the area under examination is otherwise inaccessible. They are capable of recognizing imperfections or defects in a tested subject, without permanently damaging the integrity of the structure, specimen or product.

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reasons for conducting ndt

 
Corrosion
Ensures products, equipment and facilities are safe for the public. Employers with the foresight to rent infrared cameras and conduct building envelope testing, for example, could avoid the corrosion of structural members in an old building, which could be ripe with potential lawsuits in case of a collapse or dangerous mold contamination.
 
 
Ships | NDT Testing
Non-destructive testing assesses the reliability of a device or system, empowering project managers to make informed decisions on repairs, remodels and replacements. A flow meter will indicate to facility managers whether a new piping system is a financially sound investment or whether the current system is dependable, perhaps saving thousands of dollars.


 
Test Standards
NDT fulfills requirements for numerous organizations, including the following and more:
  • International Organization for Standardization (ISO)​
  • American Society of Mechanical Engineers (ASME)
  • American Society of Testing and Materials (ASTM)
  • Aerospace Industries Association (AIA)
  • American Petroleum Institute (API)
  • American Welding Society (AWS)