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GAS RECOVERYThe first VOC condensation system with zero emissions was installed onthe shuttle tanker Stena Alexita, operated by ExxonMobil in the North Seaoil fields.• Wärtsilä Hamworthy VOC RecoveryOur field proven system is self-supplied with energy and results in zeroVOC emissions.These emissions from the global sea transportation of crude oil andassociated products, account for a total of more than 5 million tonnesper year. The Wärtsilä Hamworthy VOC plant ensures that cargo tankpressures are maintained low enough to keep the vent valve closed.This prevents VOC from being emitted to the atmosphere, and thegas is instead fed to the VOC recovery module, where it is treated bycompression and condensation. The liquefied gas is then fed to theVOC fuel tank.We have also developed a system for VOC recovery in off shoreoil loading applications. It exceeds the Norwegian authorities’requirements for Non-Methane Volatile Organic Compounds (NMVOCs)by reducing VOC emissions by 100 per cent, including methane, whichis not currently specified in the regulatory requirements.103