man carrying out non-destructive testing

Non-Destructive Testing (NDT)
Inspection Services

For more information on our range of services,
or to book an inspection, please get in touch.

Non-destructive testing (NDT) plays a crucial role in ensuring that your plant and equipment, from pressure vessels through to lifting jibs or structures, are safe and that underlying defects are identified. This can be the difference in protecting the health of your employees or minimising the threat of costly losses in production – so it’s vital you have confidence in those conducting your NDT testing.

With extensive experience and nationwide coverage, you can trust our non-destructive testing (NDT) experts to deliver the least obtrusive and most cost-effective solutions for your equipment.

Whether it is a visual inspection, or ultrasonics on a large-scale boiler, we can accommodate a huge range of equipment to confirm the health and safety of your employees, and minimise the threat of costly losses in production.

Backed by highly experienced, fully trained NDT practitioners, our range of inspection services
gives you complete peace of mind over the performance and safety of your systems.

  • Visual inspections
  • Remote visual inspections
  • Ultrasonic testing
  • Magnetic particle testing
  • Dye/liquid penetrant testing
  • Eddy current testing
  • Thermal imaging of electrical inspections

Not sure which service is right for you?
Learn more about our service options or contact one of our experts.

Non-Destructive Testing Inspection Services FAQs

Non-destructive testing (NDT) is a testing and analysis technique used to evaluate a range of plant and machinery for potential defects, all without causing damage to the equipment in question. It is also known as non-destructive examination (NDE), non-destructive inspection (NDI), and non-destructive evaluation (NDE).

This can be as simple as a visual test by a trained NDT inspector, or a more complex type of remote inspection.

At Allianz, we are fully qualified and trained to perform a wide variety of non-destructive testing methods:
The most basic form of NDT testing assesses the quality of all equipment with the naked eye. It is often the most important part of our engineer surveyors’ examination routine.
For equipment with restrictions on entry, such as storage tanks for nuclear waste and industrial steam boilers, we can use specialist cameras, drones, crawlers and more to safely inspect the condition of your equipment.
Using high-frequency sound waves, ultrasonic inspections detect subsurface defects on your equipment, such as measuring the thickness of materials or fatigue cracks within the materials.
This uses magnetic fields to find faults in ferromagnetic materials that are not visible to the naked eye, often employed in welding, wrought products or other materials.
We apply either dye or liquids to identify minuscule cracks and breaks in your equipment.
Using an alternating current coil to create an electromagnetic field, this identifies surface and sub-surface defects in welding, condenser tubes, coating applications and more.
We use thermal imaging and infrared cameras to detect problems in electrical installations, such as suspicious temperature losses, signs of overloading, and evidence of sufficient operations.

NDT is essential in industries where component failures can cause substantial harm or significant financial loss. Examples of systems that require this level of testing include:

  • pressure vessels
  • storage tanks
  • lifts, lifting equipment and hoists
  • pipework
  • oil and gas tanks.

This technique is cost-effective, safe, and goes a long way to supporting the long-term performance of your equipment. NDT prevents catastrophic failures and breaches that could seriously risk the health of your workforce, damage your property, or cause your processes to break down.

Plus, unlike destructive testing, NDT services ensure that the equipment being inspected suffers no damage, so it can continue to be operated once any faults are resolved. This means you can avoid the cost of replacing parts, and tests can be repeated multiple times for the most reliable results.

There are many reasons you should perform NDT testing on your systems:

  • It establishes a baseline for the quality of your manufactured items.
  • It ensures that any signs of corrosion, erosion and fatigue are identified before they can become dangerous.
  • It detects defects with absolute accuracy, so you can resolve these in a timely fashion.
  • It confirms that the weld quality on plant modifications meets required standards.

Our highly trained NDT engineers perform these tests with the utmost care and skill, ensuring that your equipment is completely safe and fit for purpose.

  • Your equipment is undamaged, meaning it can be repaired rather than replaced if faults are detected, or immediately returned to service if found to be working well.
  • It identifies problems in your equipment not visible to the human eye, preventing failures that may injure your employees, damage your property or close your production lines.
  • It is a very reliable form of testing, as they can performed multiple times to verify results and confirm the safety of your systems.
  • It is a safe testing method for operators, with most techniques harmless to humans.
We understand the importance of these tests in supporting the safety and long-term performance of your equipment.
Our network of experienced, audited and approved sub-contractors conduct your tests, overseen by our senior NDT technicians.
Approaching every test with absolute attention to detail, we work to ensure you have total confidence in the integrity of your systems.
Our engineer surveyors are experts in all forms of pressure system inspections, offering the highest level of technical competence. 
A Loyalty Leader for over 13 years, we monitor customer feedback to improve our service and ensure our 31,000+ customers are fairly treated.
We inspect plant and machinery anywhere in the UK and Republic of Ireland, examining over 3.6 million items and visiting over 125,000 locations in 2022. 
To make our customers’ lives easier, our engineering inspection and insurance services can be arranged together.
Our accreditations reassure our customers that we complete tasks safely and with absolute attention to detail.
We can provide both one-off inspections and consultancy services, tailored to your specific needs.
Our inspection reports can be compiled on-site, meaning our customers receive our recommendations as soon as possible. 
All our engineer surveyors hold a SAFed passport, certifying that the holder is competent to work safely in all industry sectors.