A brief history on Radyne Offshore. 11.04.2017
The offshore pipe-laying industry requires advanced techniques, specifically in the field joint sector, and is reliant upon tried-and-tested procedures that have remained the same for decades – But Radyne Offshore, a part of Inductotherm Group has set the lead in new developments, accepted and operated for the past ten years, and this innovation continues unabated today.
Radyne Offshore has been supplying induction heating equipment and systems to the offshore pipe-laying industry since 1994, principally to the major pipe-laying vessel owners and operators.
With an ever-increasing demand for technology, insisting on proven equipment installed on vessels that works for rapidly changing environments, the Radyne Offshore team offers this track-proven system that is second to none, whilst being committed to developing new technology for the future of offshore.
Radyne is a familiar brand to all pipe-laying vessel owners and operators, servicing some of the largest pipe-laying projects in the world, including:
- 2000 – Blue Stream
- 2002 – Thunderhorse
- 2004 – Mardi Gras
- 2007 – Medgaz
- 2012 – Liwan
- 2013 – Walker Ridge | Guara Lula
- 2014 – Jack-St Malo | Cabiunas | South Stream | P55
- 2015 – Ichthys| Pre-Salt
Using the most advanced technology, the Radyne Merlin field-joint heat-and-coat machine enables subsea pipe-laying rates to be significantly increased by using an automated system. This ensures repeatability and reliability of field-joint coating processing. By using a fully computerised system, the Merlin gives total control, using pre-selected heating and coating recipes modelled by the Radyne team to the bespoke client spec.
The Merlin design concept is based on four frame sizes, covering 8–48in oute0072-diameter pipe and uses interchangeable tooling. The units are therefore not project-specific but become a vessel asset to be used over several projects, dependent on pipe diameter and joint length.
Radyne Offshore equipment has brought significant advances and advantages to the field-joint-processing sector, including but not limited to:
- Considerably faster cycle times leading to increased laying rates
- computer-controlled equipment
- process-parameter monitoring for each joint
- reduced manning levels
- Operational reliability
- Process repeatability.
Integral parts of the process
Clam coils for pre-heat prior to welding, pre-heat prior to shrink-sleeve application and post-weld heat treatment are The Merlin heat and coat clam coil, which are all equally important parts of the product range used in offshore. Each induction coil is designed and modelled to heat the field joint accurately – controlling the heat-affected zone and ensuring that the factory-applied coating adjacent to the weld area is not overheated, thus removes the risk of disbondment. End-pre-heat coils for heating pipe-ends prior to welding are provided for stalk prefabrication onshore and offshore.
The Radyne Offshore division of Inductotherm supplies complete systems for field-joint processing – including containerised induction inverters and associated cooling. The containers are designed to meet the DNV 2.7-1 offshore specification, and are supplied as standard in 10 and 20ft versions, depending upon client requirements.
The 20ft system includes the supply of two 450TC3 450kW inverters, one online and one back-up, together with a bespoke dual water-cooling chiller system. The 10ft version includes a single inverter and water-to-water heat-exchanger recirculating cooler – with the option of using seawater for the primary cooling.
The Flexitune unit – a small, versatile power supply – is provided for use with handheld coils for holiday repair and for aiding the removal of parent coating in preparation for anode tag-welding. Radyne Offshore has a first-class team of dedicated offshore service engineers – experienced in all aspects from computer programming to mechanical and electrical engineering, and process technology – ready, willing and able to support the Radyne plant as and when necessary.