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SUBSEA TECHNOLOGY


seven litre 300 bar twin scuba set, which at 120m provides seven and half minutes of breathing gas (based on a consumption rate of 40 litres per minute), the advanced technology of COBRA is a step forward in improving subsea safety. JFD recently delivered six COBRA


sets to Rever Off shore (formerly Bibby Off shore) to enhance diver safety. Since delivery the company has successfully completed the fi rst deep test dives in the North Sea. Rever Off shore is the fi rst North Sea contractor to adopt COBRA, thereby setting a precedent for diver safety in the region. T e technology is expected to be adopted by a number of other North Sea contractors as part of the continual drive for improved safety standards. T e technology and capability exists in


the market today to provide an extended emergency gas supply that will allow divers the best possible chance to get themselves to safety in the event of an incident that could threaten their lives. It is essential when undertaking operations of any nature or in any region that divers have the confi dence that the companies they are working for will ensure the provision of a reliable, advanced emergency bailout rebreather capability that will provide absolute assurance that they can conduct their operations in the safest conditions possible. Once the diver has left the diving bell


they are reliant on their primary rebreather function, with the emergency gas supply readily available as a contingency measure to allow them to return safely to the bell. However, this is one scenario and just one stage in the recovery process. Saturation diving support vessels


(DSVs) require a rescue contingency for their divers in the form of a self-propelled hyperbaric lifeboat (SPHL). In the event of an emergency evacuation, hyperbaric lifeboats accommodate saturation divers for up to 72 hours using on-board life support, during which time the vessel is transported to a facility where the divers can be safely decompressed.


JFD has supplied over 135 integrated and modular saturation diving systems to clients around the world. T rough a recent joint venture alongside Singapore- based lifeboat manufacturer Vanguard, JFD has increased its capability to deliver a new generation of SPHLs that greatly improve the chances of the safe recovery and decompression of the divers. JFD has developed a range of advanced SPHLs


46 www.engineerlive.com


Divers conduct vital work and their safety is the top priority


for the commercial diving industry that combine proven, high quality internal chambers and life support equipment with specialist hull construction, ensuring there is a robust and reliable emergency evacuation at pressure contingency in place. In the event that the SPHL has to be


deployed from the DSV and has reached a safe haven, the divers are still at great risk of serious health complications or even fatality if they do not undergo a decompression process to gradually return their bodies to atmospheric pressure. Safe decompression requires the capability of a full hyperbaric evacuation system (HES). A key part of this is a hyperbaric rescue facility (HRF) that can safety transfer rescued divers at pressure and deliver them to a hyperbaric rescue centre (HRC) to facilitate decompression. It is critical that this process is handled with care and due diligence to ensure that the divers are not exposed to any risk of decompression sickness.


JFD has designed and built multiple


advanced HRF systems that are currently in operation. T ese are designed to allow for the confi guration to mate to a recovered SPHL or to a HRC whilst operating anywhere in the world, connecting with a bottom or side-mated SPHL or side-mated


HRC, and maximising the chances of a successful rescue.


OF PARAMOUNT CONCERN Having a comprehensive rescue and evacuation process in place that covers all eventualities and caters for every stage of rescue is absolutely vital to ensure the safety of divers. Health and safety must always be the primary concern for any operation, regardless of how or where it is carried out. To protect the lives of divers it is paramount that the necessary technical capabilities are in place to safely facilitate an escape and evacuation, from deep sea to the shore. T is means providing divers with the ability to return to safety at pressure, employing technical support solutions that are innovative, reliable, fi t for purpose, and of the highest quality. Divers carry out vital work in keeping the off shore and oil and gas industries afl oat, and there can be no greater priority than ensuring their safety whilst they carry out their work. 


Danny Gray is operations director at JFD. www.jfdglobal.com


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