Aqua Milling® 12″ Gas Import Riser

Pipetech mobilised to clean and treat a gas import riser which could not be cleaned by conventional methods due to the line configuration and platform layout.

Using Aqua Milling®, the specialist nozzles and rotational hose negotiated 6 bends to 140mtr depth at 950Barg working pressure.


A Specialist Cleaning team working along with an Inspection provider successfully completed a capability demonstration for the client onshore in Bergen, Norway ahead of mobilising offshore. This proved Aqua Milling® ability to negotiate tight bend configuration.

Aqua Milling® nozzle outlet

Pipework set up in Bergen


To safely carry out HP cleaning of 140mtr gas import riser utilising only one access point, negotiating 2 initial 45° bends.


First UK managed work successfully completed.

Commendation received from Client.


Safety – Fully contained, remotely operated jetting system carried out within a controlled worksite.

Cost Saving – Aqua Milling® capability over traditional cleaning methods eliminated need to break into the riser for additional access as well as no requirement for underdeck scaffold.

Key Project Facts


June 2014



Product Line

Aqua Milling®

12” Line, 10” tie-in point, 140 metres in length, 6 bends





"“Please pass my thanks to the crew for job well done. The crew put in the hours required to finish the job in a safe manner and co-operated with the team fully on all matters”"