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Insights

Maximising Inspection Value Through Non-Intrusive Inspection

19th August 2024

ESR Technology’s Inspection Consultancy team is dedicated to minimising risk and maximising the value derived from inspection processes, offering impartial and independent advice to clients. By combining technical expertise, innovative solutions, and data-driven insights, our team delivers advanced inspection and non-destructive testing (NDT) consultancy that supports clients’ specification, planning and utilisation of inspection. A key service the team provide to clients is Non-Intrusive Inspection (NII).

The safe operation of high-hazard pressure vessels requires regular inspection to confirm the internal condition of the item. Historically, this has been achieved through internal visual inspection (IVI) where shutdown of the vessel is required to allow entry. NII however, offers a compelling alternative to costly and potentially hazardous intrusive inspections (IVI). By conducting inspections while vessels remain operational, NII significantly enhances production uptime.


The NII process is essentially a 4-step process:

  1. Firstly, in the assessment phase the vessel’s inspection history, degradation threats, and design and operating data are reviewed to determine the suitable inspection strategy.
  2. A work scope is then developed with respect to NDT technique selection, inspection locations and reporting requirements.
  3. The inspection phase is then carried out to fully meet all requirements.
  4. Finally, the process of evaluation is carried out and any integrity and reinspection recommendations made.

Our comprehensive NII consultancy service aligns with the HOIS Recommended Practice in NII (HOIS-RP-103). We cater to a diverse clientele, including operators, integrity management companies, inspection providers, and EPC firms, providing a range of services including:

  • Design of equipment for through-life NII
  • Development of tailored processes and documentation, including Risk-Based Inspection (RBI) integration
  • Assessment of degradation threats
  • In-depth NII assessments
  • NII work scope development
  • NII evaluation
  • Bespoke training

With over two decades of experience in NII development and consultancy, our team offers impartial advice on the most suitable inspection methodologies and procedures. Our support is adaptable, ranging from single-vessel NII evaluations to comprehensive NII planning for all pressure vessels for an asset. We deliver our services flexibly, with options for remote collaboration or on-site integration with client teams.

By leveraging ESR Technology’s NII expertise, clients can enhance asset integrity, optimise operational efficiency, and mitigate risks effectively.

For further information please contact:

Ali Mumtaz, Business Development Manager, ali.mumtaz@esrtechnology.com , +44 1925 843511