Hyperbaric welding

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JFD operate the only land-based saturation diving complex in the UK, providing facilities for underwater welding and hyperbaric habitat trials.

The unique facilities at NHC (National Hyperbaric Centre) permit problem free testing of dry and wet hyperbaric welding procedures. 

NHC has completed a number of development projects on subsea welding and robotics developing systems for the repair of underwater pipelines and structures.

An established set up combined with interface flexibility allows a variety of habitat welding techniques; manual, mechanised and remotely operated. 

Our large work chamber can be adapted for a variety of welding situations, and is attached to a full saturation diving system which is comfortably furnished for up to 16 divers to live in during saturation.

 

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 Underwater welding

 Dry welding under pressure

 Weld set up within the work chamber  Wet welding within the work chamber  Dry welding under pressure

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The National Hyperbaric chamber has completed a number of development projects on subsea welding and robotics developing systems for the repair of underwater pipelines and structures.

A tried and tested internal filtration system ensures the maintenance of good visibility during dry and wet welding operations, in either fresh water, seawater or mixed gas environments.

A full video and communication system means that dives can be monitored and recorded to ensure a controlled and safe environment.

 

Habitat welding

  • Full surface control/monitoring set up for welding and pre-heat
  • Modularised chamber internal welding/control stations
  • Internal regeneration and fume extraction
  • Internal pipe handling system
  • Transfer lock and trolley system to allow removal of test pieces up to 30" diameter
  • Fixed pan and tilt camera system, inspection Camera
  • Fume extraction and hood system with fume analysis

 

Wet welding

  • Complete welding equipment hook up, both inside to wet connectors and outside to welding sets, up to surface control panel
  • All diving equipment including hat-mounted camera system
  • Dual weld control system with individual communications to divers
  • Pan and tilt camera and fixed cameras 
  • Internal handling system to assist test piece preparation

 

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