TPT January 2018

T E CHNOLOG Y

DNV GL qualification of thermoplastic composite pipe MAGMA Global has announced the completion of the first DNV GL qualification of a thermoplastic composite pipe (TCP) intervention line under DNVGL-RP-F119. specifically meet the needs for cost- efficient and reliable solutions. There is a great potential for TCPs to deliver lightweight, non-corrosive pipeline solutions, and qualification according to DNVGL-RP-F119 provides a robust assessment of the operational integrity of TCPs, especially under challenging deep water environments.” Magma Global Ltd – UK Email: sales@magmaglobal.com Website: www.magmaglobal.com Por table measurement of oxygen levels David Charlesworth, head of engineering for Magma, commented, “We have worked very hard to achieve this qualification for m-pipe and are delighted to have secured DNV GL’s third-party verification. This qualification involved extensive materials testing, design process development and verification along with considerable full scale testing. “This qualification forms the foundation for further qualification scopes which are already underway, covering larger diameter, long-term production applications.”

Third-party verification was provided by DNV GL. The qualification covers m-pipe as an intervention line for dynamic surface to seabed applications. DNV GL project manager Ramin Moslemian said, “The DNVGL-RP-F119 thermoplastic composite pipe was developed in conjunction with oil and gas operators and contractors to down to 1 ppm WELDING stainless steel, titanium, zirconium, niobium and other metals sensitive to atmospheric gases requires oxygen levels to be as low as 10 ppm and, in some cases, knowledge of dew point level in the shielding and purging gas. According to Huntingdon Fusion Techniques (HFT), many welds of this nature are still welded with archaic or home-made items to try to shield the weld, but most fail to give satisfactory protection, resulting in oxidised joints,

which can lead to metallurgical failure at worst and the necessity for additional processes such as mechanical or acid removal of the oxide film. The extra processes of cleaning/ oxidation removal can be negated by using professionally designed and manufactured products and a weld purge monitor such as the PurgEye ® 300 Plus (with PurgeNet™), which measures oxygen level down to 1 ppm. This lightweight, portable gas analyser indicates actual oxygen levels down

to 1 ppm (accurate to 10 ppm) on a large alpha-numeric OLED display, to repeatedly achieve oxide-free, zero- colour welds. “The unique highly advanced communicating system PurgeNet™ allows connection of accessories such as an automatic welding machine interface, a long-distance visual alarm system and a dew point monitor,” said Ron Sewell, chairman of Huntingdon Fusion Techniques. “Each of these allows control of a welding system by the weld purge monitor to avoid making faulty welds because of excessive oxygen present.” The PurgEye 300 Plus is menu driven by four push buttons on the front, and has an internal audible alarm so that acceptable and unacceptable oxygen levels can be set. A long-life oxygen sensor inside the monitor means there is very little maintenance requirement. As well shielding against the high frequency electronic disturbances common with welding power supplies, the PurgEye 300 Plus is equipped with PurgeLog™ for quality control purposes, where data can be stored, printed or transferred to a PC. Huntingdon Fusion Techniques – UK Fax: +44 1554 836 837 Email: hft@huntingdonfusion.com Website: www.huntingdonfusion.com

PurgEye 300 Plus weld purge monitor

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JANUARY 2018