The Institute of Corrosion is a Learned Society and Registered Charity that has been serving the corrosion science, technology and engineering community since 1959 in the fight against corrosion, which costs the UK around 4% of GNP per annum. Key to this fight are the establishment and promotion of sound corrosion management practice, the advancement of cost effective corrosion control measures, and a sustained effort generally to raise corrosion awareness at all stages of design, fabrication and operation.


Levels of qualification

Level 1


Personnel are qualified to carry out operations according to written instructions. ICorr Level 1 certificated personnel have demonstrated competence to set up specific equipment; carry out tests and perform inspections against written criteria; record and classify the results of tests and inspections against written criteria; report the results.

Level 1 personnel have not demonstrated competence in selecting the extent of inspection or testing required, appropriate inspection or test methods to be used, nor for the interpretation of specific requirements.

Level 2
Level 2 personnel are qualified to perform and direct inspection or testing operations according to established or recognized procedures and they have demonstrated competence to choose the extent of inspection or testing to be used (where agreed procedures allow); choose the inspection and test methods to be used (where agreed procedures allow); set up and calibrate inspection or test equipment; perform and supervise inspection or testing tasks; interpret and evaluate results according to applicable normative documents; define the limitations of application for common test methods; understand and transform normative document requirements into practical instructions adapted to the actual working conditions; prepare written test instructions; organize and report the results of inspections or tests.

Level 3
Level 3 personnel are qualified to direct any inspection or test operation for which they are certificated; assume full responsibility for an inspection or test facility and staff; establish and/or validate work instructions or procedures; interpret normative documents; designate the extent of inspection and the particular test methods and procedures to be used.


Rules & syllabuses


The requirements for experience, training, examinations etc. are documented in ICORR REQ DOC -Requirements for the Certification of Personnel Engaged in Painting and Coating Inspection, Cathodic Protection and Related Fields.
The appendices to this document are available separately and contain the syllabuses for both training and examinations.



All examinations consist of a general, specific and practical examination.
The general and specific examinations consist of both multi-choice and essay type questions. Examination duration is normally less than 1 day.

Certification is valid for 5 years, although attendance of a 1 day Review & Update course prior to certification expiry will extend the certification for a further 5 years - maximum examination interval is 10 years.

Certain concessions are available for individuals currently approved or certificated under existing schemes (this does not affect the existing



Personnel Certification in Non-Destructive Testing 

The PCN scheme, an internationally recognized scheme for the certification competence of NDT personnel, is accredited as meeting the requirements of European Standards EN 45013 and EN473, and international standard ISO 9712. In addition, the aerospace sector examinations meet the requirement of EN 4179. Certificates of competence are valid for five years from issue, following a demonstration which includes specific periods of training and experience and a thoroughly searching independent examination. The scheme offers three levels of certification specific to industry sectors.

The British Institute of NDT is the professional institute for all those engaged in non-destructive testing and condition monitoring. It is concerned with the education and training of its members, and the advancement of the science and practice of the subject. Over its 50 years, the Institute has established itself as one of the country's leading engineering institutions, and has achieved Nominated Body status with the Engineering Council. The object of the Institute is to promote and advance the science and practice of non-destructive testing, condition monitoring, diagnostic engineering and all other materials and quality testing disciplines. In achieving this aim, the Institute, which employs a permanent Secretariat at its Northampton headquarters, relies on the support of personnel, companies and other organizations in the NDT industry.


Levels of qualification

See EN 473 for a full description for levels of competence.

Level 1
This level qualifies personnel to carry out NDT operations according to written instructions under the supervision of a Level 2 or Level 3 person. A Level 1 person has demonstrated competence to:

  1. set up equipment and carry out tests;
  2. record and classify the results in terms of written criteria.

Level 2

This level qualifies personnel to perform and direct NDT according to established or recognized procedures and has demonstrated competence to:

  1. Choose the technique for the test method used;
  2. Perform and supervise the test; 
  3. Interpret, evaluate and report results according to applicable standards, codes or specifications; 
  4. Define the limitations of the testing method for which the qualification covers; 
  5. Understand and transform NDT standards and specifications into practical testing instructions adapted to the actual working conditions;

Level 3
This level qualifies personnel to direct any NDT operation for which they are certificated and:

  1. assume full responsibility for a test facility and staff;
  2. Establish and/or validate NDT instructions or procedures; 
  3. Interpret codes, standards, specifications and procedures; 
  4. Designate the particular test methods, techniques and procedures to be used.

Pre-examination requirements

Level 1 and Level 2: There are mandatory minimum pre-approval training requirements which are given in the PCN requirements documents.
Pre-examination training courses must be validated by The British Institute of Non-Destructive Testing and need to cover the syllabus over a designated minimum number of hours. Documented in-house training may account for up to one third of the required training hours. The candidate also has to demonstrate practical experience in line with the requirements of PCN.

Level 3: The candidates have two access routes available which are shown in the PCN requirements documents. Both training and experience requirements depend upon academic background. Note: A mature candidate route is available.


The examination consist of general theory, specific theory and practical parts depending on level and type of examination. By holding other PCN qualification, candidates maybe eligible for exemptions. Following an examination, a result notice will be issued, this counts are evidence of PCN certification for a period of 42 days. The certificate will follow the result notice within 21 days. Where the candidates is unsuccessfully, one retest maybe allowed providing the percentage grades are not lower than the grades required by PCN




ASNT (American Society for Non-Destructive Testing) examinations are held at Ruane-TATI Sdn Bhd.


Examination content is determined by an employer's written practice, i.e. employees who do not have a written practice cannot have their NDT personnel certificated under the ASNT scheme.


All companies who wish their NDT operators to be qualified to ASNT requirements must hold a written practice in accordance with the ASNT document SNT-TC-1A Recommended Practice; this document is intended as a guideline for employers to establish their own written practice for the qualification and certification of their non-destructive testing personnel.


A self-employed individual may hold his own written practice, but it should be appreciated that he may be re-examined in accordance with a different written practice when employed by another organization.


Written Practice


A written practice is not a set of NDT procedures.


A written practice is for the control and administration of NDT personnel and is written specifically for a company's needs, e.g. related to welds only, for welds and castings, for forgings only etc. The document may also relate to specific British Standards, American Standards, in-house procedures etc., and may cover one NDT method or say four or five.


A written practice typically consists of 10-25 pages and includes the following:

  1. Minimum training and experience requirements for personnel wishing to be certificated.
  2. The methods which may be relevant, e.g. UT, MT, PT, RT, ET.
  3. The syllabus for the training related to each method.
  4. The number of examination questions and number of practical test points.  Theoretical questions are usually of the multi-choice type.
  5. Minimum examinations pass marks.

Although it is common practice for ASNT examined Level III personnel to produce written practices, it should be noted that it is the employer who is responsible for the document, i.e. it is the employer who is responsible for his own qualification system for NDT personnel under the ASNT scheme.




Examinations duration is typically less than a day and is divided into three parts:
(1) General.
Typically 30-40 multi-choice questions related to the relevant NDT method.
(2) Specific.
Typically 15-20 questions related to the test equipment used, product/process and specifications/procedures used by the employer.
(3) Practical
Typically 10 check points which may relate to one or more test sample.

All candidates would also have to undertake physical tests applicable to the test method, e.g. eyesight and, in some cases, colour differentiation.


Examination Result


Examination results are normally available within 2 working days of the examination; the employer receives details of the examination results and certificates of achievement for successful candidates, normally within 7 working days.


SNT-TC-1A certificates are normally valid for 3 years OR 5 years if the written practice is based on snt-tc-1a 2006



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