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• • • HAZARDOUS AREA EQUIPMENT • • •


powering temporary well service, production and pumping equipment.


“With new technology, cleaning exhaust flame


arrestors every eight hours is a thing of the past,” says Rob Double, sales director for Pyroban. “This applies to new equipment and almost all existing Pyroban protected engines already in the field, once they are fitted with a simple replacement part.” Exhaust flame arrestors are a critical part of an


explosion proof system found on engines used in Zone 2 hazardous areas offshore. They allow the engine exhaust gases to pass through and will stop a flame in the event of hydrocarbon gas ingestion, but in certain operating conditions they can clog up with soot very quickly. Pyroban has developed two different solutions to


eliminate the plate type exhaust flame arrestor from the explosion proof diesel engine design. In April 2020, Pyroban launched Ever Clear Exhaust


(ECE) Flame Arrestors which are a direct replacement for plate type flame arrestors. These are bolted into the exhaust system between the turbo and gas cooler, on the hot side of the exhaust flow. They are low in cost and can easily be retro fitted in the field to existing equipment. Pyroban has options for most turbo diesel engines above 100bhp. As a more advanced alternative, Pyroban’s Ex


SCS was launched in 2018 to combine flame arrestor elimination, safety shutdown and diesel


NO MORE DAILY MAINTENANCE N


ew technology developed by safety company Pyroban has put a stop to the daily maintenance of ATEX diesel engines


engine control and monitoring in one flexible package. The system brings an active approach to the overall safety system by introducing gas detection into the engine inlet tract at a certified position and also within the equipment DNV 2.7-1 enclosure. “Ex SCS quickly and reliably


triggers a safety shutdown on detection of a flammable gas in the engine air inlet, diesel engine over speed, high exhaust gas and coolant temperatures, low oil pressure or if there is a manual emergency stop activation for example,” says Rob, explaining that the control system is Category 2G certified for Zone 1 use, ATEX and IECex, and is also SIL 2 rated to EN61511. Ex SCS is a 100 per cent stand-alone safety


control system for ATEX 2014/34/EU compliance. A 7inch colour touchscreen HMI (Human Machine Interface) displays the current safety status and the diesel engine control and monitoring screens can also be integrated. This makes it easy to incorporate additional driven equipment controls such as pumps, generators, transmissions, or the well head platform’s DCS (distributed control system). “Whichever solution is chosen, operators are no longer exposed to sources of ignition if a ‘dummy


arrestor’ is used,” Rob says. “Manual handling compliance issues also disappear because we have taken away the need to change and clean the heavy flame arrestors which are typically located above waist height.” Following extensive field trials and testing, and


the completion of the EN1834-1:2000 non-flame transmission tests, both solutions are available to order now for Pyroban kits and HazPaks all over the world. “Operators can now get on with the job, enjoy longer operation and reduce unproductive downtime,” he adds.


PYROBAN pyroban.com


SHINING A LIGHT ON THE IMPORTANCE OF FUNCTIONAL SAFETY


Solutions, an independent control, safety and automation systems supplier to the UK's energy, metals, chemicals, oil and gas and manufacturing industries, to provide Functional Safety Services across its operations.


D Inspec Solutions was approached by the


organisation to help meet its demanding proof test schedule as Diamond recognised the importance of effective high integrity automatic safety systems to protect hazardous processes. Because of its expertise in delivering customer-


critical infrastructure, Inspec Solutions will be able to deploy a team and begin testing, which would allow Diamond staff to focus on their core working duties. Mark Ritson, managing director of Inspec


Solutions, explains: “We are really excited to be working with Diamond Light Source on this important project. Diamond should save a significant amount of time by outsourcing this service. They will benefit from our ability to operate as a highly qualified independent company to verify the integrity of their safety system. By having


certified Functional Safety Engineers in the team, we will provide a fresh, thorough, and ongoing review of the existing proof test procedures, highlighting opportunities for improvements.” Diamond is one of the most advanced scientific


facilities in the world and its pioneering capabilities are helping to keep the UK at the forefront of scientific research. Its technology accelerates electrons to near light speeds so that they give off light 10 billion times brighter than the sun. This allows scientists to use the light to study a vast range of subject matter, from new medicines and


20 ELECTRICAL ENGINEERING • OCTOBER 2020


iamond Light Source, the UK’s national synchrotron science facility located in Oxfordshire, has appointed Inspec


treatments for disease to innovative engineering and cutting-edge technology. The Inspec Solutions team supporting Diamond


includes certified TÜV Functional Safety Engineers, as well as highly experienced offshore technicians with backgrounds in supporting critical infrastructure in the UK North Sea. Inspec Solutions has over 15 years of Functional


Safety experience in many different industries, focusing on both continuous process and machinery installations. This experience means the company can carry


out proof testing on safety critical systems to a very high standard and to work with clients to improve their own procedures. Including a certified Functional Safety Engineer in the team provided a fresh and thorough review over the existing proof test procedures, highlighting opportunities for improvements. The company provides high integrity, SIL rated


systems and offers every stage of the safety lifecycle from Risk Assessment / HAZOP / LOPA, SRS, through design, installation, validation or and SIF proof testing services.


DIAMOND LIGHT SOURCE diamond.ac.uk


electricalengineeringmagazine.co.uk


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