Case Studies

Diesel Defence fuel polishing preserves power for Scottish islanders

A fuel cleaning operation identified thick layers of sludge at the bottom of SSE’s two 1,000,000-litre bulk storage tanks. The contamination threatened the reliability of the entire power station. Arnish provides top-up power for the Isle of Lewis. The island’s 20MW cable supply from the mainland does not meet the peak demand of 27MW. If contaminated fuel caused the power station’s generators to fail, islanders would face brownouts or blackouts. SSE had to take action.   “The filters were coming out black” The contamination in Arnish’s fuel stocks was evident without the need for a fuel test. When they were removed, spent filters were black and clogged with solid…

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Telecommunications Company

IPU were called in by a leading generator service company to analyse fuel samples at 10 sites. The fuel was tested by an independent UKAS approved laboratory. All the fuel samples failed to meet specification on initial testing. Challenges faced The company’s outdoor storage tanks were vulnerable to water contamination. This had encouraged microbial growth in the fuel (“the diesel bug”) and caused particulate contamination from rusting tanks pipework. This nationwide telecommunications company would face huge consequences if contaminated fuel crippled its emergency generators. It is critical that fuel is kept in a clean, dry condition. Solutions delivered Fuel was tested at 10 sites.…

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IPU Fuel Conditioning Case Study - Facilities Management

Protecting back up power for Facilities Management

IPU were called to a critical data centre near Chester after a critical power failure. During a power cut its generators stopped running after just 4 minutes. After investigation the client discovered water in their fuel tanks. Challenges faced A high water table and heavy rainfall meant the fuel tank manhole was full of water. This overwhelmed the sump pump and allowed water to enter the tank via a sheared dip cap. High levels of groundwater were also identified in the tank and diesel was visible in the flooded manhole. This meant the facility posed a serious environmental risk. Solutions delivered Thankfully, IPU’s Fuel Team attended the site and removed 9,000 litres of water and…

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Wintershall

Wintershall, a wholly owned subsidiary of BASF, has been operating in the North Sea since 1965 and today operates a total of 26 platforms, 25 of them in Dutch territorial waters and one in German territorial waters. The company commissioned Pon Power, the Caterpillar dealer in Scandinavia to supply emergency generators for offshore operations. The IPU hydraulic start system was designed to provide a black start system capable of three consecutive starts of 5 seconds each. The complete system was designed in compliance with the Pressure Equipment Directive, which means the system meets essential safety means the system meets essential safety criteria, has satisfied appropriate conformity…

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Torpille

IPU were recently contracted to supply the emergency starting system on the fire pump replacement for the mature Torpille Field offshore Gabon. The starting system was designed to as an emergency back up on the CAT C15 engine. As the platform has a constant air supply, the recharging of the start accumulator is achieved with both a manual hand pump and also a pneumatically driven hydraulic pump. Boosting the air supply by a ratio of 60:1 the air driven pump uses the platform air supply to recharge the accumulators to 207bar. On reaching the system working pressure, the air driven pump stalls, only re-starting when pressure in the accumulator falls on start up of the engine, thus making an…

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Tapis R Field

Petronas (a Malaysian oil and gas company) are looking to enhance oil recovery in Malaysia, according to Exxon Mobil Corp. The Tapis field, off the coast of Terengganu, will be the main oil field off the coast of Malaysia. This latest contract includes commitments to implement an enhanced oil recovery project at the Tapis field and will be the first ever large-scale project of its kind in Malaysia, including a new 50km network of pipes to distribute the recovered oil and gas. IPU provided the secondary starting system for the CAT 3516 emergency driven diesel generator. The starting system was designed to operate in hazardous areas and to provide six start attempts each of ten seconds. The…

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Hibiscus

IPU has supplied a hydraulic start system for the emergency generator onboard the British Gas Hibiscus development. Located in 500 ft of water, the field is approximately 45km off the North coast of Trinidad. The start system was designed to provide extended cranking cycles, critical for the starting of gas engines; that is an excess of 30 seconds cranking from the three hydraulic accumulators. Each start attempt is actuated from an individual solenoid start valve and recharged with a motor driven pump. All electrical components are ATEX certified, for use in hazardous area Zone 2 specification. For environmental protection from the offshore surroundings, the whole hydraulic package was…

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FPSO Kamelia

IPU were awarded the contract to start an emergency generator on the Floating, Production, Storage and Offloading vessel, The Kamelia. The engine was a Cummins S3.8 which had no second start pocket. This had to be designed and manufactured by the client. The starting system was designed to provide 30 seconds cranking capacity in a hazardous area. Due to space constraints, the start system was designed to fit on the external end of the container. The system is automatically recharged with an electric motor driven recharge pump.

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Fishcon Chirag

The IPU Starting Service team recently visited the BP Chirag platform that is being built in Baku, Azerbaijan. The undertaking was to commission and test the starting unit attached to the emergency generator, which had not long been installed. The platform itself, is due to be commissioned in the Caspian Sea in the summer of 2013. The Starting unit had been made to BP specifications and certified in accordance with offshore regulations for potentially explosive environments. The process of commissioning involved checking the system over before operation, charging the accumulators and testing the unit; this was all performed by the IPU Servicing team. While on board, IPU staff gave in depth…

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