An individual certificated to level 1 has demonstrated 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, level 1 personnel may be authorised by the employer to:

• set up NDT equipment;
• perform the tests;
• report the results
• record and classify the results of the tests in terms of written criteria

An individual certificated to level 2 has demonstrated competence to perform non-destructive testing according to established or recognised procedures
Within the scope of the competence defined on the certificate, level 2 personnel may be authorised by the employer to

• select the NDT technique for the testing method to be used;
• define the limitations of application of the
• testing method;
• set up and verify equipment settings;
• perform and supervise tests
• interpret and evaluate results according to applicable standards, codes or specifications;
• prepare written NDT instructions;
• carry out and supervise all tasks at or below level 2;
• provide guidance for personnel at or below level 2, and
  organise and report the results of non-destructive tests

An individual certificated to level 3 has demonstrated competence to perform and direct non-destructive testing operations for which he is certificated.
Within the scope of the competence defined on certificate, level 3, personnel may be authorised to:

• assume full responsibility for a test facility or examination centre and staff;
• establish and validate NDT instructions and procedures
• interpret standards, codes, specifications and procedures;
• designate the particular test methods, procedures and NDT instructions to be used;
• carry out and supervise all level 1 and level 2 duties, and
• provide guidance for NDT personnel at all levels.