ASNT NDT Level III Certification - Leak Testing (LT)
Credential: ASNT NDT Level III Certification - Leak Testing (LT)
Credentialing Agency: American Society for Nondestructive Testing (ASNT)
Renewal Period: 5 years
The ASNT NDT Level III program provides third-party certification for nondestructive testing (NDT) personnel whose specific jobs require knowledge of the technical principles underlying the nondestructive tests they perform, witness, monitor or evaluate. Leak Testing (LT) is used to detect through leaks using one of the four major LT techniques: Bubble, Pressure Change, Halogen Diode and Mass Spectrometer Testing. Candidates must have a minimum of 4 years of experience in an assignment at least comparable to that of a Level II in Leak Testing. ASNT NDT Level III certification candidates are required to pass both the NDT Basic and a method examination in order to receive the ASNT NDT Level III certificate.
More information can be found on the certifying agency's website.
ASNT NDT Level III Certification - Leak Testing (LT)
The following DOD Civilian Occupations provide training and/or experience that contributes to attaining this credential:
The following Federal Occupations provide training and/or experience that contribute to attaining this credential:
| Federal Occupation | Related As | |
|---|---|---|
| 0806 Materials Engineering |  Some |
|
| 0855 Electronics Engineering | Some |
|
| 0861 Aerospace Engineering |  Other |
|
| 3705 Nondestructive Testing | Other |
MINIMUM REQUIREMENTS
Eligibility Requirements (View Details)
- Credential Prerequisite
- Experience: 4 years
- Education
- Training
- Membership
- Other
- Fee
Note: This credential may have multiple options for becoming eligible. Listed are the minimum requirements based on the minimum degree required. To view other options, see the Eligibility tab.
Exam Requirements (View Details)
- Exam
- Written Exam
- Oral Exam
- Practical Exam
- Performance Assessment
RECERTIFICATION SUMMARY
Renewal Period: 5 years
AGENCY CONTACT INFORMATION
American Society for Nondestructive Testing (ASNT)
PO Box 28518
1711 Arlingate Ln
Columbus, OH 43228-0518
Phone: (614) 274-6003
Fax: (614) 274-6899
Contact Page
Education and/or Experience REQUIREMENTS
Candidates must have four years of experience in an assignment at least comparable to that of an Level II in the applicable test method(s), as defined in ASNT’s Recommended Practice No. SNT-TC-1A, latest edition.
Option 2:Candidates must have completed with passing grades at least two full academic school years of engineering or a physical science study at a university, college, or technical school, plus two years of experience in nondestructive testing in an assignment comparable to that of an Level II in the applicable test method(s), as defined in ASNT’s RecommendedPractice No. SNT-TC-1A, latest edition.
Option 3:Candidates must have graduated from a minimum four-year college or university curriculum with a degree in engineering or a physical science, plus one year of experience in nondestructive testing in an assignment comparable to that of an Level II in the applicable test method(s), as defined in ASNT’s Recommended Practice No. SNT-TC-1A, latest edition.
Written Exam NDT Basic Exam
-
Administration of NDT personnel certification programs
- SNT-TC-1A, 2011 edition
- ASNT CP-189, 2011 edition
-
General familiarity with other NDT methods
- Radiography (safety, X-ray, and isotope methods)
- Neutron radiography
- Ultrasonic testing
- Eddy current and flux leakage testing
- Liquid penetrant testing
- Magnetic particle testing
- Leak testing
- Acoustic emission testing
- Visual testing
- Thermal/infrared
-
Materials, fabrication, and production technology
- Properties of materials, origin of discontinuities, and failure modes
- Materials processing (casting, welding, forging, brazing, soldering, machining, heat treatment, surface treatment, adhesive bonding, etc.)
- Dimensional metrology
Written Exam Leak Testing (LT) Method Exam
-
Principles theory
- Physical principles in leak testing
- Principles of gas flow
- Proper selection of LT as method of choice
-
Equipment/Material
- Leak testing standards
- Detector/instrument performance factors
- Vacuum pumps
- Bubble testing practices and techniques
- Absolute pressure testing equipment
- Absolute pressure hold testing of containers
- Absolute pressure leakage rate testing of containers
- Analysis of data for determination of accurate results
- Halogen testing equipment
- Helium mass spectrometer testing equipment
-
Technique/Calibration
- Bubble test
- Pressure change/measurement test
- Halogen diode detector leak test
- Mass spectrometer leak testing
- Helium mass spectrometer vacuum testing by dynamic method
- Helium mass spectrometer vacuum testing by static method
-
Interpretation/Evaluation
- Basic techniques and/or units
- Test materials and equipment effects
- Effects of temperature and other atmospheric conditions
- Calibration for testing
- Probing/scanning or measurement/monitoring
- Leak interpretation evaluation
- Acceptance and rejection criteria
- Procedures
- Leak testing procedures
- Leak testing specifications
-
Safety and Health
- Safety considerations
- Safety precautions
- Pressure precautions
- Safety devices
- Hazardous and tracer gas safety
- Types of monitoring equipment
- Safety
Exam Preparation Resources
There are a number of resources available to help you prepare for the ASNT NDT Level III Certification - Leak Testing (LT) examination:
-
Best Sources
- ASNT Frequently Asked Questions
- ASNT Handbooks
- ASNT NDT Level III Application
- ASNT NDT Level III Basic Examination Outline
- ASNT NDT Level III Certification Program Information Document
- ASNT NDT Level III Exam Preparation
- ASNT NDT Level III Examination Information
- ASNT NDT Level III Leak Testing Examination Outline
- ASNT NDT Level III Recertification Requirements
- ASNT NDT Resource Center
- ASNT Study Guides
Testing Information
Testing for this credential is handled by Pearson VUE. The test centers are located in the U.S. They also have some test centers on military bases.
To find out more, use the following links on the Pearson VUE website:
For more information on the American Society for Nondestructive Testing (ASNT) testing process, visit the agency website.
RECERTIFICATION
ASNT NDT Level III Certification - Leak Testing (LT)
Renewal Period: 5 years
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