We are providing Level I and Level II Training and Certification as per Recommended Practice SNT - TC-1A 2006 in the following NDT Method
RT involves the use of penetrating gamma- or X-radiation to examine materials and product's defects and internal features. An X-ray machine or radioactive isotope is used as a source of radiation. Radiation is directed through a part and onto film or other media. The resulting shadowgraph shows the internal features and soundness of the part. Material thickness and density changes are indicated as lighter or darker areas on the film. The darker areas in the radiograph below represent internal voids in the component. RT is a common method to be used in general metal fabrication and construction. However, there are some limitations of the methods:
Extensive safety requirements when the technique relates to radiation exposure.
Difficult application to different shapes of testing objects.
Long and complicated process required from starting to the end of the work.
Level I course outline
- Nuclear Physics-Interaction of Radiation with Matter.
- Shielding, Radiation Detectors, Biological Effects
- Radiation Protection, Basic Rules & Techniques
- Sources of Radiation and their characteristics
- Film Radiography
- Film Processing
- Inspection Techniques and Procedures
- Sensitivity & Definition, I.Q.Iâ€s, Other Accessories
- Types of Discontinuities.
RT Level 1 Practical Training
Radiography of Castings and welds using X-ray and Gamma ray
Level II course outline
Review of Level-I
- Non-conventional Radiography
- Techniques in radiography
- Codes, standards and Procedures
- Acceptance Standards
- Manufacturing processes and discontinuities
- Interpretation of Radiographs
RT Level 2 Practical Training
Same as level-I + Interpretation, evaluation of Radiography, recording of test results and preparation of test reports.
Radiographic Testing (RT), or industrial radiography, is a nondestructive testing (NDT) method of inspecting materials for hidden flaws by using the ability of short wavelength electromagnetic radiation (high energy photons) to penetrate various materials.
Either an X-ray machine or a radioactive source (Ir-192, Co-60, or in rarer cases Cs-137) can be used as a source of photons. Neutron radiographic testing (NR) is a variant of radiographic testing which uses neutrons instead of photons to penetrate materials. This can see very different things from X-rays, because neutrons can pass with ease through lead and steel but are stopped by plastics, water and oils.
Since the amount of radiation emerging from the opposite side of the material can be detected and measured, variations in this amount (or intensity) of radiation are used to determine thickness or composition of material. Penetrating radiations are those restricted to that part of the electromagnetic spectrum of wavelength less than about 10 nanometres.