What is Computed Radiography?

An emerging technology in the field of NDT is Computed Radiography, this technology enables the digital capture of an image by use of a re-usable imaging plate (IP) which is coated with a phosphor layer, and when exposed to radiation is able to store the resultant energy. The IP is then scanned using a laser scanner which results in the stored energy being released as ultraviolet light, the intensity related to the amount of radiation received, these light intensities are then read by a laser and a digital image is generated. This image is stored as raw data, which means that although the image can be enhanced to optimise the contrast, magnify and measure the component the initial image remains unchanged.

Computed Radiography has many advantages over conventional radiography such as, no expensive film to purchase, no processing chemicals (more environmentally friendly), wider latitude to enable a greater thickness range to be captured on one exposure, sharing of images electronically and easier storage.

What are the responsibilities of a individual who is certified to Computed Radiography Level 2?

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

  • Select the Computed 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 Computed 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 Computed Radiography test

40 hours Computed Radiography Level 2 training at Lavender International covers the following:

Basic Radiology Physics 

  • Introduction
  • Fundamental properties of matter
  • Radioactive materials
  • Types of radiation
  • Interaction of radiation with matter
  • Exposure devices and radiation sources
  • Radiological safety principles review

Computed Radiography Techniques 

  • Computed Radiology (CR) overview
  • System components
  • Basic CR techniques
  • Digital image processing and viewing
  • Calibration of equipment (Phantom)

We can provide Computed Radiography testing training suitable for PCN GEN – BS EN ISO 9712 Levels 2. Alternatively we can provide training suitable for candidates working to an employer written practice based on SNT-TC-1A; EN4179 and NAS410.

We provide examinations for Computed Radiography Testing, including PCN personal certification examinations to Level 1 and 2, plus examinations for employer based schemes such as SNT-TC-1A, NAS410, EN4179.

Candidates must hold an existing RTL2/BRS certification to be eligible for this course.

The Lavender requirements for Level 2 CRT are 40 hours training and 3 months supervised work experience to be obtained either before the examination, or within 24 months after passing the exam.

The CRT Level 2 examination includes a theory paper, specific paper, and a practical exam for SNT-TC-1A, NAS410 and EN4179 Welds or Castings. For PCN a specific paper and a practical exam is only required.

The PCN requirement for Computed Radiography Level 2 is: 3 months supervised work experience, however candidates have to hold historical film Level 2 certification and experience requirements.

The work experience can be obtained either before the examination, or within 24 months after passing the exam.

For employer based schemes the expected amount of work experience should be determined in the written practice.

Click here for available dates other dates are available dependent upon demand,  enquire here or if you prefer, call the UK Booking Office on 01226 765769.

Overalls/Lab Coat
Safety Boots

Candidates MUST bring their PCN Wallet Card.
If you do not have a wallet card bring some other form of identification showing a photograph, i.e. Passport or Photo Driving Licence.

All other equipment and training materials (with the exception of Level 3 Text Books) are provided by Lavender International.
Protective gloves, protective eye glasses and plastic aprons are also available for the use of students.

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