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TWI's non-destructive testing (NDT) training courses give you a comprehensive understanding of the processes where tests are conducted on a component without destroying the item or its structure.

NDT is used across industries such as aerospace, oil and gas, nuclear, power generation, medical, rail and general manufacturing to name a few. It is a crucial aspect of quality control and ultimately health and safety.

Common or conventional methods include visual testing, penetrant testing, magnetic particle testing, eddy current testing, radiographic testing and ultrasonic testing and each have their advantages and disadvantages. With advancements in digital control and imaging, other techniques have been developed including phased array ultrasonic testing, time of flight diffraction, digital and computed radiography, eddy current array and pulsed eddy current.

With over 50 years' experience, highly knowledgeable staff and a worldwide network of locations, we are trusted by industry to deliver high quality NDT training.

Learn at your own pace, boost your theoretical training and prepare for your course with TWI’s eLearning and blended learning packages which allows you to prepare for your course and examination in your own time and at your own pace.


Conventional NDT methods

Advanced NDT methods

Accelerated work experience

Appreciation Courses

Career path

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Improve your job opportunities and prospects, while also opening up new career paths, by adding extra levels of expertise through certification in additional methods and techniques.

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Why TWI for NDT Training?

Offering first-class facilities around the world, TWI has a long history in the expert delivery of NDT training courses and certification for conventional and advanced NDT techniques.

Conventional NDT methods

The methods covered in conventional NDT are well established and widely applied.

Suitable for NDT personnel, inspectors and technicians, our conventional NDT courses offer a wealth of knowledge if you are involved with or responsible for the inspection of castings, forgings and welds in manufacturing or in-service testing across all industry sectors.


Advanced NDT methods

TWI’s advanced NDT courses are designed for experienced level 2 personnel who wish to progress their career into cutting edge NDT methods.

Ideal if you are engaged in or responsible for the inspection of castings, forgings and welds during manufacture or in-service inspections these training courses are applicable to all industry sectors.


Aerospace NDT

Our aerospace NDT courses are designed specifically for those who are involved in manufacturing, aerospace supply chain and/or in-service testing with in the aerospace industry.

These courses are suitable for NDT personnel, inspectors and technicians involved in the aerospace industry.


Level 3 NDT

The level 3 NDT courses are ideal for any experienced level 2 technicians who wish to progress their career to the next level.

Designed to upgrade your skills and competencies, these courses provide the perfect preparation for your level 3 examination.


eLearning/blended learning NDT products

TWI's eLearning/blended learning NDT courses provide a flexible training method allowing you to be fully mobile, learning modules when and where you want as well as at your own pace.

We offer pre-course, blended learning, appreciation and refresher modules to support some of our standard training.


A career in NDT

Alexander Tsougranis explains how to get into NDT, the benefits and the career progression opportunities.

Did you know?

Refresher training courses - theory and practical

These cover both theory and practical training tailored to your specific needs and are ideal if you are seeking recertification at Level 2 or 3, or preparing to take retests in specific areas.
We also offer the option of learning remotely via our Virtual Academy.

Contact us for more information!

Customised courses

We can create bespoke courses to meet your individual, industrial or company needs so if you can't find course to suit you, contact us!

CSWIP Employer-Specific Certification

This procedure-driven certification compliant to EN ISO 9712 can be tailored to specific NDT application(s).

Ask us about the scheme!

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Globally recognised qualifications

To find out more about the conventional NDT certification schemes we offer, please go to: CSWIP or PCN

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Professional Membership of The Welding Institute

Membership gives you access to all the technical knowledge that you need and will also make it easier for you to achieve your own personal learning and development goals.

You can also qualify for a 5% discount on training courses. Find out more!

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Continuing Professional Development

You can gain CPD points when attending this course - Find out more!

Frequently asked questions

Try our list of frequently asked questions.

If you can’t find an answer, please contact us using the button below: Contact customer services

How can I verify the required industrial experience?

Industrial application of the NDT method is a requirement before certification can be awarded. If you are working for a company using the method, it is a case of logging this experience and having this verified by your supervisor or if you are working on a contract as self-employed it can be signed by the contract client (Note: NDT certification schemes often require that the person verifying your experience holds the same NDT method and level of qualification themselves).

The experience duration needs to match the minimum requirements as detailed by the certification scheme documents, these can be found on the scheme websites (e.g. CSWIP or BINDT).

Can I come and sit on the course without any industrial experience?

Yes, for those not working for a company or on a contract that is using the NDT method a 2-year period is normally given after the examination date to send your experience verification to the scheme body. For further advice please do not hesitate to contact us, however, this applies only to Levels 1 and 2.

What are the best courses to start with?

We normally advise candidates to start with a surface inspection such as penetrant inspection (PT) or magnetic particle (MT), however if a candidate already has NDT experience in another method, we would perhaps suggest sitting the course in that particular method. Generally you should aim to achieve at least 2 surface inspection methods and what we call a volumetric inspection method such as radiography or ultrasonic testing.

Can I use my welding inspector experience for NDT?

Unfortunately any experience claimed must be in the same NDT discipline, however, for visual testing (VT) a welding inspection certificate may contribute towards the EN ISO 9712 visual testing (VT) experience requirement for the welds sector.