What is Radiography Testing?
This method consists of a sensitive radiographic film being placed under a specific component i.e.. a weld or casting, The Component is then exposed to ionizing radiation either X-Radiation or Gamma Radiation; this radiation will pass through the component and expose the film beneath it leading to what is known as the latent image on the film this image is not a permanent image and no noticeable change will be seen until development when it becomes a permanent fixed image. Discontinuities such as cracks or lack of fusion within the component can affect the exposure of the film. Most materials can be tested by Radiographic inspection, e.g. Ferritic and non-ferritic materials and both welds, castings and often composites are viewed too. Radiographic testing provides a permanent record and provides a high sensitivity of testing.
All personnel wishing to carry out Radiography should have a valid Basic Radiation Safety Certificate (please note this can be carried out as part of any level 2 RT course)
What are the responsibilities of a individual who is certified to Radiography Level 1?
An individual certified to Radiography Level 1 has to demonstrate competence to carry out NDT according to written instructions and under the supervision of Level 2 or Level 3 personnel. Within the scope of the competence defined on the certificate, Radiography Level 1 personnel may be authorised by the employer to perform the following in accordance with NDT instructions:
- Set up Radiography Testing equipment;
- Perform the Radiography Inspection tests;
- Record and classify the results of the tests according to written criteria;
- Report the results
Level 1 certified personnel shall neither be responsible for the choice of test method or technique to be used, nor for the interpretation of test results.