Non-destructive Testing is one part of the function of Quality Control and is complementary to other long established methods. By definition non-destructive testing is the testing of materials, for surface or internal flaws or metallurgical condition, without interfering in any way with the integrity of the material or its suitability for service. The technique can be applied on a sampling basis for individual investigation or may be used for 100% checking of material in a production quality control system.Non-destructive Testing is not just a method for rejecting substandard material; it is also an assurance that the supposedly good is good. The technique uses a variety of principles; there is no single method around which a black box may be built to satisfy all requirements in all circumstances.
The ASNT NDT Level II 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. The program provides a system for ASNT NDT Level II certification in NDT accordance with Recommended Practice No. SNT-TC-1A.
Certification under this program results in the issuance of an ASNT certificate and wallet card attesting to the fact that the certificate holder has met the published guidelines for the Basic and Method examinations as detailed in Recommended Practice No. SNT-TC-1A.
Destructive Testing And Non-Destructive Testing-Define & type, Testing and inspection, Levels of certification, ASNT Level II Responsibilities, Mechanical properties, Methods of NDT-(Conventional and Advanced), NDT Responsibilities, Stress-strain curve, mechanical properties.
COMMON NDT METHODS
The six most frequently used test methods are
- Magnetic Particle Testing (MT)
- Liquid Penetrant Testing (PT)
- Radiographic Testing (RT)
- Ultrasonic Testing (UT)
- Electromagnetic Testing (ET)
- Visual Testing (VT)
SPECIALISED NDT METHOD
- Acoustic Emission Testing (AE)
- Guided Wave Testing (GW)
- Laser Testing Methods (LM)
- Leak Testing (LT)
- Magnetic Flux Leakage (MFL)
- Neutron Radiographic Testing (NR)
- Thermal/Infrared Testing (IR)
- Vibration Analysis (VA)
ASNT NDT LEVEL II EXAMINATIONS
Successful ASNT NDT Level II certification candidates must complete the General examination and at least one Specific examination.
The 50-question multiple-choice Level II General examinations cover the fundamentals, principles and theory found in the applicable Level II Topical Outlines found in the ANSI/ASNT American National Standard CP-105, ASNT Standard Topical Outlines for Qualification of Nondestructive Testing Personnel. The general exam is the same for all Sectors for any one test method.
The specific examinations determine the industry Sector. ASNT currently offers Specific examinations for the General Inspection and Pressure Equipment Sectors. These examinations consist of 40 multiple-choice questions based on an NDT procedure covering the equipment, operating processes and NDT techniques commonly used in the applicable industry Sector.
Level III Examiner : Guruswamy Venkataraman
ASNT Level III (UT, MT, PT, RT, ET, VT) Certificate No : 112041
CSWIP Level III (UT, MT, PT, PAVT, TOFT) Certificate No : 45303
PCN Level III (UT, MT, PT)
ASNT Level III Examiner