Tyne Pressure Testing Ltd.
Direct employees
Turnover (reported)
Nuclear Contracting Tiers
Tier 3: Original Equipment Manufacturing Organisations


  • ISO 14001:2015
  • ISO 45001:2018
  • ISO 9001:2015

Tyne Pressure Testing Ltd.

Testing & Inspection

Pressure and Environmental Testing


Tyne Pressure Testing is a pressure testing and assembly facility located in the North East of England.

We work within sectors such as defence, subsea, civil nuclear, oil and gas, petro-chemical, renewables and exploration to verify that components are fit for purpose and can operate safely at the pressures, or within the extreme environments, which they are intended for.

Our nine chamber offering includes a one of the largest commercially available hyperbaric chambers in the world. We can test down to water depths of 15,000m [1,500 Bar/21,755 psi] in our diverse range of chambers measuring in diameters from 0.9m to 2.5m, lengths from 0.8m to 6.75m.

We also have the ability to carry out a large suite of other pressure testing disciplines such as environmental testing, endurance testing, fugitive emission testing, vacuum testing and altitude testing using test mediums such as hydro, air, nitrogen gas and helium gas.

We have dedicated assembly facilities which includes the ability to load test and shrink fit components together.

Products and Services

Product Sector
Pipework Fittings & Spools Nuclear Civil
Pumps & Valves Nuclear Civil
Heat Exchangers including Main Steam Generators Petrochemical & Refining
Valves including Main Isolation SQUIB & Actuators Oil & Gas including LNG
Pressure Vessels Heat Exchangers & Tanks including Internals Nuclear Defence - Naval Marine
Pumps & Valves Oil & Gas including LNG
Specialist Services & Processes including Engineering Manufacturing Design & Testing Oil & Gas including LNG
Pumps & Valves Subseas and Offshore
Cables Subseas and Offshore
Cables Renewables - (Wind, Tidal, Solar Biomas etc.)
Cables Nuclear Defence - Naval Marine

Site Facilities

Shop Floor

3600m2 Overhead cranage lifting capability up to 50 tonne

Inspection / Testing

  • Advanced testing facilities
  • Equipment Qualification
  • Pressure / Hydro Testing
  • Proof Load Testing

Recent Work


Tyne Pressure Testing has provided on-going, on-site hydrostatic testing and leak testing on fabricated stand pipes for Doosan Babcock.

Doosan Babcock develop and offer sophisticated and innovative technology products and skills to help manage the challenges of the nuclear industry.

Tyne Pressure Testing has provided on-going, on-site hydrostatic testing and leak testing on fabricated stand pipes for Doosan Babcock.

The purpose of this testing was to verify the structural integrity of the stand pipes for use in a nuclear power station and to ensure that the components met industry standards BS EN 13480-5 and ASME B31.3.

Tyne Pressure Testing invested in various equipment to enable on-site testing including a transportable container which houses a pump, booster and data loggers. The container is fully self-sufficient, relying solely on air compressors to operate, with the structure acting as a safety barrier between the on-site engineers and the testing, allowing on-site testing in most circumstances.

The testing was carried out over several months at the Doosan Babcock facility. During testing, the stand pipes were placed within the restricted area and subjected to hydrostatic testing to varying pressure up to 261 Bar. A filtration system was employed to distil the water used ensuring that the components were not damaged by chemicals present in unfiltered water, such as chlorine. High pressure gas testing, otherwise known as leak testing, was also carried out to ensure that the pipes are leak-proof.

A Tyne Pressure Testing engineer was present on-site at Doosan Babcock daily to oversee the project from the safety of the container. Where required, night shifts minimised disruption within the facility and ensured that all tests were carried out within the client’s schedule.

Our transportable, fully self-sufficient container and equipment means that we can facilitate on-site sequences that satisfy qualification tests in accordance with various industry standards. Our expert engineers hold decades of experience in the execution of energy production componentry testing.