Pipeline & Process

At the planning stage, detailed operational procedures and QHSE documentation such as risk assessments, COSHH, and safety plans are compiled to address the intended scope of work. This thorough process draws on our considerable expertise and skill sets to ensure optimised and successful project management. 

With our extensive fleet of pumping equipment, we have the ability to provide numerous equipment spreads to undertake pumping, pigging and hydrostatic testing services for both newly installed and existing pipeline systems. 

Our flooding, cleaning and gauging services are utilised to remove debris and mill scale from the pipeline's sidewalls and to determine any damage that may have been sustained during the pipeline's construction and installation.

Following flooding, the integrity of the pipeline is tested at 1.5 times the design test pressure to determine that the pipeline is free from leaks. The pressure is raised in a controlled manner with various hold points, before being held at the agreed test pressure for a period of 24 hours.   

Dewatering and drying occurs after successful hydrostatic testing. Compressed air or nitrogen is utilised to achieve the ideal dryness level to inhibit hydrate formation and other conditions that are detrimental to the pipeline’s integrity.   

Extensive experience in the commission, installation and testing of Pipe in Pipe (PIP) bundles and associated towheads. 

Optimised testing of the control umbilical system, typically the electrical, hydraulic and fibre optic lines, to determine if any damage has been sustained during the installation process.

Measurement of the actual annulus riser volume, which will be compared against the theoretical as-built riser annulus volume. This determines possible sea water ingress that could significantly reduce the riser’s design life.

Through the hydrostatic re-testing of existing pipelines, they can be revalidated to confirm its suitability for ongoing operations. 

Our new integrated digital recording system offers real-time data measurement of nitrogen flow, pumping pressure and temperature all from one compact system.

Our nitrogen pumping and helium leak detection services are used as the foundation of shutdown, commissioning and the start-up of onshore and offshore process plants throughout the world. With the use of state of the art equipment, leaks are quantified quickly and precisely. Our equipment is fully compliant with all applicable legislation and built to exceed the highest industry standards. 

Creating a temporary isolation by freezing the parent fluid within a pipe using an indirect nitrogen filled jacket thus forming a pressure resistant plug.

Chemical cleaning is an efficient and the least disruptive method of deriving unwanted contaminants from the walls and surfaces of process equipment. Hot oil flushing is used in precision hydraulic systems to remove contaminating materials, extending service life and maximising efficiency.

Retrojetting is employed to effectively remove debris, rust, sand and wax from process systems that have become restricted over time. Negating the need for manual entry, video inspection tools provides a cost-effective method of achieving internal inspection in awkward and less accessible areas. 

A method of testing process piping for strength and leakage, before the system is put into or returned to service.

Foam inerting, a technique that provides a safe working environment for the performance of hot works and maintenance in a hydrocarbon environment. A fast, reliable and cost-effective service that eliminates the risk of hydrocarbon combustion where complete inerting is not possible.

The provision of optimised methodologies for torquing and tensioning bolted joints by personnel that are fully trained to ECITB/MJI standards along with utilising the best in class equipment.

On-site machining is performed with the same tolerances as those found in a certified workshop facility using internally or externally mounted equipment. With a best-in-class flange management programme, each joint is recorded and controlled to provide full traceability and to assure complete integrity.