HYPERBARIC TESTING

hyperbaric testingHyperbaric testing at Tyne Pressure Testing

We provide specialist hyperbaric testing services to a range of sectors across the globe. Housing nine hyperbaric chambers, including one of the largest commercial chambers in the world, we can test pressures as high as 21,755 psi/ 1,500 bar in chambers up to 6.5m long.

Our largest chamber, chamber 5, has the capability to pressure test up to 6,526 psi/450 bar whilst simultaneously testing at temperatures down to -2°C. Automated controls and an interactive loading table support greater efficiencies with an ability to load, fill and fully pressurise in under 90 minutes. This chamber also benefits from being fully automated meaning any natural fluctuations in the likes of pressures and temperatures are self-regulated without the need for manual overriding. Automated controls are also used to simulate the movement of components within pressurised environments.

Hyperbaric testing at our site is completed in accordance with relevant standards such as the API 17 series in oil and gas, as well as SEPS for subsea electrical power cables.

Our highly skilled and knowledgeable test engineers are experts in hyperbaric testing and associated pressure testing services. Customers have the opportunity to draw on their specialist knowledge with the option to select our beginning-to-end, fully project managed testing service. Independent hire of the hyperbaric chambers is also available.

Did you know that we can facilitate remote viewing for hyperbaric testing? This encompasses live workshop footage and data streams to enable you to witness testing programmes and monitor product performance from any location worldwide. We can even record footage for review at a later date.

Why not contact one of our experts to discuss your product testing requirements?

Hyperbaric testing

Hyperbaric testing is used to extensively test components that are required to operate at pressure levels higher than atmospheric conditions. This type of testing is performed on components used in offshore or subsea environments, as well as in extreme high pressure applications where reliable performance is critical.

Hyperbaric chambers are used to simulate water depths and extreme pressure environments to test and verify that a product can operate under extreme, pressurised conditions.

Sectors requiring hyperbaric testing:

  • Oil and gas – valves, actuators, pods, cables, electrical connectors, pipe samples, pigging equipment, hydraulic cylinders, subsea harnesses/electrical jumpers
  • Defence – electrical cables, subsea sonars, subsea acoustic equipment
  • Marine – buoyancy modules, geophysical monitoring probes, subsea filters, diving equipment, deep sea watches

Click here to find out more about our pressure testing chambers.

VIEW CASE STUDY: NAVAL SUBMARINE TESTING

FAQs

What is hyperbaric testing?

Hyperbaric testing is the application of external pressure to a component and is carried out in a specialist hyperbaric chamber to simulate extreme pressure environments. The component may be retained inside of the hyperbaric chamber by its own weight where heavy industrial products are concerned. Retaining straps are used to hold buoyancy modules in place, or racking where separation is required for fragile components. Bespoke tooling can also be manufactured for specialist items.

How is pressure created in a hyperbaric chamber?

High pressure instrumentation and pumping systems, rated over and above the maximum pressure of each individual chamber, are used to feed inhibited water into each chamber from onsite storage tanks. This water creates the desired pressure inside of the chamber.

What is the difference between hyperbaric and hydrostatic testing?

Hyperbaric testing concerns the application of external pressure to a product. The product is housed within a pressure vessel/chamber which acts as the barrier to retain the external pressure around the test subject.

The primary reason for doing this is to replicate actual conditions an assembly will see in installed life, meaning the external pressure will first and foremost validate the structural integrity of the component. Secondary to that, any ingress of pressure into the component would highlight a leak path(s) which may compromise areas such as sealing arrangements or welded joints.

The principle of hydrostatic testing is very similar to hyperbaric testing in that this will also verify structural integrity and any leak paths, as well as utilising water as the test medium. The fundamental difference is that a hydrostatic test concerns the internal pressurisation of a component, rather than subjecting it to external pressure. The likes of a product sealing arrangement will still very much but scrutinised but with pressure effectively pushing ‘in-to-out’ rather than ‘out-to-in’.

Certain components may be subjected to a hydrostatic and hyperbaric test simultaneously e.g. subsea pipeline equipment. These products would typically feature primary, secondary and tertiary sealing barriers to withstand excessive levels of internal and external pressure.

A catastrophic failure under hydrostatic pressure would result in an explosion, whereas the same under hyperbaric pressure would cause an implosion.

 

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