Radiography Testing

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 2?

An individual certified to Radiography Level 2 has demonstrated competence to perform NDT according to Radiography Testing procedures. Within the scope of the competence defined on the certificate, Level 2 personnel may be authorized by the employer to:

• Select the Radiography technique for the test method to be used;
• Define the limitations of application of the testing method;
• Translate NDT codes, standards, specifications and procedures into NDT instructions adapted to the actual working conditions;
• Set up and verify equipment settings;
• Perform and supervise tests;
• Interpret and evaluate results according to applicable standards, codes, specifications or procedures;
• Prepare Radiography written instructions
• Carry out and supervise all tasks at or below level 2;
• Provide guidance for personnel at or below level 2, and
• Report the results of Radiography test