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Litre Meter has supplied a GOST-certified VFF positive displacement flowmeter for installation on the Orlan drilling platform on Sakhalin Island in Russia.

Production capacity on the Orlan platform has been increased and, as a result, additional equipment is required.

This latest contract is in addition to the 16 VFF meters previously supplied and equipment had to be GOST certified to comply with Russian import legislation.

GOST certification is similar to ISO9000, which is not recognised in much of Eastern Europe.

It develops stringent safety standards for flowmeters intended for use in Russia.

Litre Meter’s VFF instrument complies with these standards and helps to minimise production costs by accurately measuring the flow of corrosion inhibitor that is added to crude oil.

If too much is used, it needs to be removed when the oil is refined; this can cost nearly 10 per cent of the price of a barrel of oil.

These chemicals are also expensive.

Typically, 30 per cent of the running costs of an oil rig are associated with the chemicals used to pre-treat crude oil before it is pumped shore-side.

The VFF flowmeters measure the flow of the inhibitor chemical to an accuracy of 0.5 per cent, making it possible to control its use to a very high tolerance.

The corrosion inhibitor is added to the crude oil at rates of between zero and 25 litres per hour through 2in-diameter ANSI 2500 RTJ flanges.

It has a maximum viscosity of 285cPs at the minimum operating temperature of -45C.

Litre Meter’s VFF flowmeter is suitable for use in the petrochemical industry and in particular low-flow/high-pressure applications.

The instrument is capable of operating reliably in harsh offshore environments and it can deal with very high particle contamination, such as some chemicals that are added to crude oil, according to the company.

The meter is designed to operate in harsh winter conditions.

The VFF flowmeter will work alongside 16 instruments that were previously installed by Litre Meter.

Each instrument provides a pulsed output to a display mounted in a Zone 1 hazardous area.

This is contained within an EExd enclosure, which also includes barriers to isolate the flowmeters.

The VFF flowmeter is suitable for measuring liquids at pressure ratings up to 4,000bar (60,000psi) and flow rates from 0.0004 litres per minute (0.5 litres per day) to more than 270 litres per minite.

It features an intrinsically safe design and is manufactured to operate reliably at temperatures ranging from -40C to +100C.

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