Conventional methods of non-destructive testing (NDT) are used in a variety of industry sectors, including everything from oil and gas, renewables, rail, construction and fabrication, shipbuilding, steel production, biochemical through to theme parks and fairgrounds.

The methods used for conventional NDT include visual testing, penetrant testing, magnetic testing, ultrasonic testing, radiographic testing and eddy current testing, but all share common features in that the materials under test are not harmed in any way. These methods are well established and widely applied.

Our training courses will provide you with the skills and certification to enter into the world of NDT, additionally, we also offer eLearning for courses such as ultrasonic testing to supplement your classroom-based studies via our Virtual Academy. With so many opportunities available in conventional NDT, our suite of courses could open up an abundance of career opportunities for you.

Complement your theoretical training and prepare for your course and examination at your own pace with our eLearning and blended learning packages.

Realise your potential with TWI

Case study

Rifhan has been a technician for the past three years, and, to further her career, decided to become an NDT inspector and started taking NDT courses with TWI in Malaysia.


Career path

Adding expertise by achieving additional methods/techniques certification improves your job opportunities and options and often leads you down a more fulfilling and exciting career path.

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Why choose TWI?

TWI has long history and expertise in the delivery of advanced NDT techniques training and certification and offers international first class facilities.

Conventional eLearning/blended learning products

We currently offer a range of eLearning/blended learning products for ultrasonic testing (UT) levels 1 and 2 - these pre-course, blended learning, appreciation and refresher packages give you more choice and opportunities for more flexible learning when you enrol.


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A career in NDT

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

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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!


Globally recognised qualifications

You can access the scheme documentation which includes detailed information regarding entry requirements for 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 testing (PT) or magnetic particle testing (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.